Igor Skochinsky
code_red's port of EasyWeb server for LPC1768, made to compile with mbed's online compiler.
Revision 0:12b53511e212, committed 2010-01-29
- Comitter:
- igorsk
- Date:
- Fri Jan 29 21:46:31 2010 +0000
- Commit message:
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/easyweb.c Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,392 @@
+/******************************************************************
+ ***** *****
+ ***** Name: easyweb.c *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** adannenb@et.htwk-leipzig.de *****
+ ***** Func: implements a dynamic HTTP-server by using *****
+ ***** the easyWEB-API *****
+ ***** Rem.: In IAR-C, use linker option *****
+ ***** "-e_medium_write=_formatted_write" *****
+ ***** *****
+ ******************************************************************/
+
+// Modifications by Code Red Technologies for NXP LPC1768
+
+// CodeRed - removed header for MSP430 microcontroller
+//#include "msp430x14x.h"
+
+#include "mbed.h"
+
+#include "stdlib.h"
+#include "stdio.h"
+#include "string.h"
+
+#include "easyweb.h"
+
+// CodeRed - removed header for original ethernet controller
+//#include "cs8900.c" // ethernet packet driver
+
+//CodeRed - added for LPC ethernet controller
+#include "ethmac.h"
+
+// CodeRed - include .h rather than .c file
+// #include "tcpip.c" // easyWEB TCP/IP stack
+#include "tcpip.h" // easyWEB TCP/IP stack
+
+// CodeRed - added NXP LPC register definitions header
+// CodeRed - include renamed .h rather than .c file
+// #include "webside.c" // webside for our HTTP server (HTML)
+#include "webside.h" // webside for our HTTP server (HTML)
+
+
+
+// CodeRed - added for use in dynamic side of web page
+unsigned int aaPagecounter=0;
+unsigned int adcValue = 0;
+
+int main (void)
+{
+// CodeRed - removed init functions as not required for LPC1776
+// InitOsc();
+// InitPorts();
+
+
+// CodeRed - added info message
+ printf("Setting up TCP/IP with IP address: ");
+ printf("%d.%d.%d.%d\n",MYIP_1,MYIP_2,MYIP_3,MYIP_4);
+
+ TCPLowLevelInit();
+
+/*
+ *(unsigned char *)RemoteIP = 24; // uncomment those lines to get the
+ *((unsigned char *)RemoteIP + 1) = 8; // quote of the day from a real
+ *((unsigned char *)RemoteIP + 2) = 69; // internet server! (gateway must be
+ *((unsigned char *)RemoteIP + 3) = 7; // set to your LAN-router)
+
+ TCPLocalPort = 2025;
+ TCPRemotePort = TCP_PORT_QOTD;
+
+ TCPActiveOpen();
+
+ while (SocketStatus & SOCK_ACTIVE) // read the quote from memory
+ { // by using the hardware-debugger
+ DoNetworkStuff();
+ }
+*/
+
+ HTTPStatus = 0; // clear HTTP-server's flag register
+
+ TCPLocalPort = TCP_PORT_HTTP; // set port we want to listen to
+
+// CodeRed - added info message
+ printf("Webserver started\n");
+
+ while (1) // repeat forever
+ {
+ if (!(SocketStatus & SOCK_ACTIVE)) TCPPassiveOpen(); // listen for incoming TCP-connection
+ DoNetworkStuff(); // handle network and easyWEB-stack
+ // events
+ HTTPServer();
+ }
+}
+
+// This function implements a very simple dynamic HTTP-server.
+// It waits until connected, then sends a HTTP-header and the
+// HTML-code stored in memory. Before sending, it replaces
+// some special strings with dynamic values.
+// NOTE: For strings crossing page boundaries, replacing will
+// not work. In this case, simply add some extra lines
+// (e.g. CR and LFs) to the HTML-code.
+
+void HTTPServer(void)
+{
+ if (SocketStatus & SOCK_CONNECTED) // check if somebody has connected to our TCP
+ {
+ if (SocketStatus & SOCK_DATA_AVAILABLE) // check if remote TCP sent data
+ TCPReleaseRxBuffer(); // and throw it away
+
+ if (SocketStatus & SOCK_TX_BUF_RELEASED) // check if buffer is free for TX
+ {
+ if (!(HTTPStatus & HTTP_SEND_PAGE)) // init byte-counter and pointer to webside
+ { // if called the 1st time
+ HTTPBytesToSend = sizeof(WebSide) - 1; // get HTML length, ignore trailing zero
+ PWebSide = (unsigned char *)WebSide; // pointer to HTML-code
+ }
+
+ if (HTTPBytesToSend > MAX_TCP_TX_DATA_SIZE) // transmit a segment of MAX_SIZE
+ {
+ if (!(HTTPStatus & HTTP_SEND_PAGE)) // 1st time, include HTTP-header
+ {
+ memcpy(TCP_TX_BUF, GetResponse, sizeof(GetResponse) - 1);
+ memcpy(TCP_TX_BUF + sizeof(GetResponse) - 1, PWebSide, MAX_TCP_TX_DATA_SIZE - sizeof(GetResponse) + 1);
+ HTTPBytesToSend -= MAX_TCP_TX_DATA_SIZE - sizeof(GetResponse) + 1;
+ PWebSide += MAX_TCP_TX_DATA_SIZE - sizeof(GetResponse) + 1;
+ }
+ else
+ {
+ memcpy(TCP_TX_BUF, PWebSide, MAX_TCP_TX_DATA_SIZE);
+ HTTPBytesToSend -= MAX_TCP_TX_DATA_SIZE;
+ PWebSide += MAX_TCP_TX_DATA_SIZE;
+ }
+
+ TCPTxDataCount = MAX_TCP_TX_DATA_SIZE; // bytes to xfer
+ InsertDynamicValues(); // exchange some strings...
+ TCPTransmitTxBuffer(); // xfer buffer
+ }
+ else if (HTTPBytesToSend) // transmit leftover bytes
+ {
+ memcpy(TCP_TX_BUF, PWebSide, HTTPBytesToSend);
+ TCPTxDataCount = HTTPBytesToSend; // bytes to xfer
+ InsertDynamicValues(); // exchange some strings...
+ TCPTransmitTxBuffer(); // send last segment
+ TCPClose(); // and close connection
+ HTTPBytesToSend = 0; // all data sent
+ }
+
+ HTTPStatus |= HTTP_SEND_PAGE; // ok, 1st loop executed
+ }
+ }
+ else
+ HTTPStatus &= ~HTTP_SEND_PAGE; // reset help-flag if not connected
+}
+
+
+
+
+// Code Red - GetAD7Val function replaced
+// Rather than using the AD convertor, in this version we simply increment
+// a counter the function is called, wrapping at 1024.
+volatile unsigned int aaScrollbar = 400;
+
+unsigned int GetAD7Val(void)
+{
+ aaScrollbar = (aaScrollbar +16) % 1024;
+ adcValue = (aaScrollbar / 10) * 1000/1024;
+ return aaScrollbar;
+}
+
+// Code Red - Original MSP430 version of GetAD7Val() removed
+/*
+// samples and returns the AD-converter value of channel 7
+// (associated with Port P6.7)
+
+unsigned int GetAD7Val(void)
+{
+ ADC12CTL0 = ADC12ON | SHT0_15 | REF2_5V | REFON; // ADC on, int. ref. on (2,5 V),
+ // single channel single conversion
+ ADC12CTL1 = ADC12SSEL_2 | ADC12DIV_7 | CSTARTADD_0 | SHP;// MCLK / 8 = 1 MHz
+
+ ADC12MCTL0 = SREF_1 | INCH_7; // int. ref., channel 7
+
+ ADC12CTL0 |= ENC; // enable conversion
+ ADC12CTL0 |= ADC12SC; // sample & convert
+
+ while (ADC12CTL0 & ADC12SC); // wait until conversion is complete
+
+ ADC12CTL0 &= ~ENC; // disable conversion
+
+ return ADC12MEM0 / 41; // scale 12 bit value to 0..100%
+}
+
+// End of Original MSP430 version of GetAD7Val()
+*/
+
+
+// Code Red - Original GetTempVal() removed
+// Function no longer used
+/*
+// samples and returns AD-converter value of channel 10
+// (MSP430's internal temperature reference diode)
+// NOTE: to get a more exact value, 8-times oversampling is used
+
+unsigned int GetTempVal(void)
+{
+ unsigned long ReturnValue;
+
+ ADC12CTL0 = ADC12ON | SHT0_15 | MSH | REFON; // ADC on, int. ref. on (1,5 V),
+ // multiple sample & conversion
+ ADC12CTL1 = ADC12SSEL_2 | ADC12DIV_7 | CSTARTADD_0 | CONSEQ_1 | SHP; // MCLK / 8 = 1 MHz
+
+ ADC12MCTL0 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL1 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL2 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL3 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL4 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL5 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL6 = SREF_1 | INCH_10; // int. ref., channel 10
+ ADC12MCTL7 = EOS | SREF_1 | INCH_10; // int. ref., channel 10, last seg.
+
+ ADC12CTL0 |= ENC; // enable conversion
+ ADC12CTL0 |= ADC12SC; // sample & convert
+
+ while (ADC12CTL0 & ADC12SC); // wait until conversion is complete
+
+ ADC12CTL0 &= ~ENC; // disable conversion
+
+ ReturnValue = ADC12MEM0; // sum up values...
+ ReturnValue += ADC12MEM1;
+ ReturnValue += ADC12MEM2;
+ ReturnValue += ADC12MEM3;
+ ReturnValue += ADC12MEM4;
+ ReturnValue += ADC12MEM5;
+ ReturnValue += ADC12MEM6;
+ ReturnValue += ADC12MEM7;
+
+ ReturnValue >>= 3; // ... and divide by 8
+
+ if (ReturnValue < 2886) ReturnValue = 2886; // lower bound (0% = 20�C)
+ ReturnValue = (ReturnValue - 2886) / 2.43; // convert AD-value to a temperature from
+ // 20�C...45�C represented by a value
+ // of 0...100%
+ if (ReturnValue > 100) ReturnValue = 100; // upper bound (100% = 45�C)
+
+ return ReturnValue;
+}
+// End of Original MSP430 version of GetTempVal()
+*/
+
+
+// searches the TX-buffer for special strings and replaces them
+// with dynamic values (AD-converter results)
+
+// Code Red - new version of InsertDynamicValues()
+void InsertDynamicValues(void)
+{
+ unsigned char *Key;
+ char NewKey[6];
+ unsigned int i;
+
+ if (TCPTxDataCount < 4) return; // there can't be any special string
+
+ Key = TCP_TX_BUF;
+
+ for (i = 0; i < (TCPTxDataCount - 3); i++)
+ {
+ if (*Key == 'A')
+ if (*(Key + 1) == 'D')
+ if (*(Key + 3) == '%')
+ switch (*(Key + 2))
+ {
+ case '8' : // "AD8%"?
+ {
+ sprintf(NewKey, "%04d", GetAD7Val()); // insert pseudo-ADconverter value
+ memcpy(Key, NewKey, 4);
+ break;
+ }
+ case '7' : // "AD7%"?
+ {
+ sprintf(NewKey, "%3u", adcValue); // copy saved value from previous read
+ memcpy(Key, NewKey, 3);
+ break;
+ }
+ case '1' : // "AD1%"?
+ {
+ sprintf(NewKey, "%4u", ++aaPagecounter); // increment and insert page counter
+ memcpy(Key, NewKey, 4);
+// *(Key + 3) = ' ';
+ break;
+ }
+ }
+ Key++;
+ }
+}
+
+
+// Code Red - commented out original InsertDynamicValues()
+/*
+void InsertDynamicValues(void)
+{
+ unsigned char *Key;
+ unsigned char NewKey[5];
+ unsigned int i;
+
+ if (TCPTxDataCount < 4) return; // there can't be any special string
+
+ Key = TCP_TX_BUF;
+
+ for (i = 0; i < (TCPTxDataCount - 3); i++)
+ {
+ if (*Key == 'A')
+ if (*(Key + 1) == 'D')
+ if (*(Key + 3) == '%')
+ switch (*(Key + 2))
+ {
+ case '7' : // "AD7%"?
+ {
+ sprintf(NewKey, "%3u", GetAD7Val()); // insert AD converter value
+ memcpy(Key, NewKey, 3); // channel 7 (P6.7)
+ break;
+ }
+ case 'A' : // "ADA%"?
+ {
+ sprintf(NewKey, "%3u", GetTempVal()); // insert AD converter value
+ memcpy(Key, NewKey, 3); // channel 10 (temp.-diode)
+ break;
+ }
+ }
+ Key++;
+ }
+}
+
+// Code Red - End of original InsertDynamicValues ()
+*/
+
+// Code Red - Deleted InitOsc() and InitPorts() as not required
+// by LPC 1776
+
+/*
+// enables the 8MHz crystal on XT1 and use
+// it as MCLK
+
+void InitOsc(void)
+{
+ WDTCTL = WDTPW | WDTHOLD; // stop watchdog timer
+
+ BCSCTL1 |= XTS; // XT1 as high-frequency
+ _BIC_SR(OSCOFF); // turn on XT1 oscillator
+
+ do // wait in loop until crystal is stable
+ IFG1 &= ~OFIFG;
+ while (IFG1 & OFIFG);
+
+ BCSCTL1 |= DIVA0; // ACLK = XT1 / 2
+ BCSCTL1 &= ~DIVA1;
+
+ IE1 &= ~WDTIE; // disable WDT int.
+ IFG1 &= ~WDTIFG; // clear WDT int. flag
+
+ WDTCTL = WDTPW | WDTTMSEL | WDTCNTCL | WDTSSEL | WDTIS1; // use WDT as timer, flag each
+ // 512 pulses from ACLK
+
+ while (!(IFG1 & WDTIFG)); // count 1024 pulses from XT1 (until XT1's
+ // amplitude is OK)
+
+ IFG1 &= ~OFIFG; // clear osc. fault int. flag
+ BCSCTL2 = SELM0 | SELM1; // set XT1 as MCLK
+}
+
+void InitPorts(void)
+{
+ P1SEL = 0; // switch all unused ports to output
+ P1OUT = 0; // (rem.: ports 3 & 5 are set in "cs8900.c")
+ P1DIR = 0xFF;
+
+ P2SEL = 0;
+ P2OUT = 0;
+ P2DIR = 0xFF;
+
+ P4SEL = 0;
+ P4OUT = 0;
+ P4DIR = 0xFF;
+
+ P6SEL = 0x80; // use P6.7 for the ADC module
+ P6OUT = 0;
+ P6DIR = 0x7F; // all output except P6.7
+}
+
+*/
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/easyweb.h Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,38 @@
+/******************************************************************
+ ***** *****
+ ***** Name: easyweb.h *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** Func: header-file for easyweb.c *****
+ ***** *****
+ ******************************************************************/
+
+#ifndef __EASYWEB_H
+#define __EASYWEB_H
+
+const unsigned char GetResponse[] = // 1st thing our server sends to a client
+{
+ "HTTP/1.0 200 OK\r\n" // protocol ver 1.0, code 200, reason OK
+ "Content-Type: text/html\r\n" // type of data we want to send
+ "\r\n" // indicate end of HTTP-header
+};
+void start(void);
+void InitOsc(void); // prototypes
+void InitPorts(void);
+void HTTPServer(void);
+void InsertDynamicValues(void);
+unsigned int GetAD7Val(void);
+unsigned int GetTempVal(void);
+
+unsigned char *PWebSide; // pointer to webside
+unsigned int HTTPBytesToSend; // bytes left to send
+
+unsigned char HTTPStatus; // status byte
+#define HTTP_SEND_PAGE 0x01 // help flag
+
+#endif
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ethmac.c Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,616 @@
+/******************************************************************
+ ***** *****
+ ***** Name: cs8900.c *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** adannenb@et.htwk-leipzig.de *****
+ ***** Func: ethernet packet-driver for use with LAN- *****
+ ***** controller CS8900 from Crystal/Cirrus Logic *****
+ ***** *****
+ ******************************************************************/
+
+// Modifications by Code Red Technologies for NXP LPC1776
+// Filename changed to ethmac.c as no longer for cs8900
+
+// CodeRed - updated include to match new filename
+
+#include "mbed.h"
+
+#include "ethmac.h"
+
+// CodeRed - add additional includes
+#include "tcpip.h"
+
+
+// CodeRed - new static pointers for receive and transmit
+static unsigned short *rxptr;
+static unsigned short *txptr;
+
+// CodeRed - function added to write to external ethernet PHY chip
+void WriteToPHY (int reg, int writeval)
+{
+ unsigned int loop;
+ // Set up address to access in MII Mgmt Address Register
+ LPC_EMAC->MADR = DP83848C_DEF_ADR | reg;
+ // Write value into MII Mgmt Write Data Register
+ LPC_EMAC->MWTD = writeval;
+ // Loop whilst write to PHY completes
+ for (loop = 0; loop < MII_WR_TOUT; loop++) {
+ if ((LPC_EMAC->MIND & MIND_BUSY) == 0) { break; }
+ }
+}
+
+// CodeRed - function added to read from external ethernet PHY chip
+unsigned short ReadFromPHY (unsigned char reg)
+{
+ unsigned int loop;
+ // Set up address to access in MII Mgmt Address Register
+ LPC_EMAC->MADR = DP83848C_DEF_ADR | reg;
+ // Trigger a PHY read via MII Mgmt Command Register
+ LPC_EMAC->MCMD = MCMD_READ;
+ // Loop whilst read from PHY completes
+ for (loop = 0; loop < MII_RD_TOUT; loop++) {
+ if ((LPC_EMAC->MIND & MIND_BUSY) == 0) { break; }
+ }
+ LPC_EMAC->MCMD = 0; // Cancel read
+ // Returned value is in MII Mgmt Read Data Register
+ return (LPC_EMAC->MRDD);
+}
+
+
+
+// CodeRed - Init8900() replaced by Init_EthMAC()
+/*
+// configure port-pins for use with LAN-controller,
+// reset it and send the configuration-sequence
+// (InitSeq[])
+
+void Init8900(void)
+{
+ unsigned int i;
+
+ P3SEL = 0x30; // reserve P3.4 and P3.5 for rs232
+ P3OUT = IOR | IOW; // reset outputs, control lines high
+ P3DIR = 0xFF; // port 3 as output (all pins but rs232)
+
+ P5SEL = 0; // select standard port functions
+ P5OUT = 0; // reset outputs
+ P5DIR = 0xFF; // switch data port to output
+
+ Write8900(ADD_PORT, PP_SelfCTL);
+ Write8900(DATA_PORT, POWER_ON_RESET); // Reset the Ethernet-Controller
+
+ Write8900(ADD_PORT, PP_SelfST);
+ while (!(Read8900(DATA_PORT) & INIT_DONE)); // wait until chip-reset is done
+
+ for (i = 0; i < sizeof InitSeq / sizeof (TInitSeq); i++) // configure the CS8900
+ {
+ Write8900(ADD_PORT, InitSeq[i].Addr);
+ Write8900(DATA_PORT, InitSeq[i].Data);
+ }
+}
+*/
+
+// Ethernet power/clock control bit in PCONP register
+#define PCENET 0x40000000
+// Ethernet configuration for PINSEL2, as per user guide section 5.3
+#define ENET_PINSEL2_CONFIG 0x50150105
+// Ethernet configuration for PINSEL3, as per user guide section 5.4
+#define ENET_PINSEL3_CONFIG 0x00000005
+// Only bottom byte of PINSEL3 relevant to Ethernet
+#define ENET_PINSEL3_MASK 0x0000000F
+
+void Init_EthMAC(void)
+{
+ unsigned int loop, value, phyid1, phyid2;
+
+ unsigned phy_in_use = 0;
+ unsigned phy_linkstatus_reg;
+ unsigned phy_linkstatus_mask;
+
+ // Set Ethernet power/clock control bit
+ LPC_SC->PCONP |= PCENET;
+
+ //Enable Ethernet pins through PINSEL registers
+ LPC_PINCON->PINSEL2 = ENET_PINSEL2_CONFIG;
+ LPC_PINCON->PINSEL3 = (LPC_PINCON->PINSEL3 & ~(ENET_PINSEL3_MASK)) | ENET_PINSEL3_CONFIG;
+
+ // Set up MAC Configuration Register 1
+ LPC_EMAC->MAC1 = MAC1_RES_TX | MAC1_RES_MCS_TX | MAC1_RES_RX |
+ MAC1_RES_MCS_RX |MAC1_SIM_RES | MAC1_SOFT_RES;
+
+ // Set up MAC Command Register
+ LPC_EMAC->Command = CR_REG_RES | CR_TX_RES | CR_RX_RES | CR_PASS_RUNT_FRM;
+
+ // Short delay
+ for (loop = 100; loop; loop--);
+
+ // Set up MAC Configuration Register 1 to pass all receive frames
+ LPC_EMAC->MAC1 = MAC1_PASS_ALL;
+ // Set up MAC Configuration Register 2 to append CRC and pad out frames
+ LPC_EMAC->MAC2 = MAC2_CRC_EN | MAC2_PAD_EN;
+
+ // Set Ethernet Maximum Frame Register
+ LPC_EMAC->MAXF = ETH_MAX_FLEN;
+ // Set Collision Window / Retry Register
+ LPC_EMAC->CLRT = CLRT_DEF;
+ // Set Non Back-to-Back Inter-Packet-Gap Register
+ LPC_EMAC->IPGR = IPGR_DEF;
+
+ // Set MAC Command Register to enable Reduced MII interface
+ // and prevent runt frames being filtered out
+ LPC_EMAC->Command = CR_RMII | CR_PASS_RUNT_FRM;
+
+
+ // Put DP83848C PHY into reset mode
+ WriteToPHY (PHY_REG_BMCR, 0x8000);
+
+ // Loop until hardware reset completes
+ for (loop = 0; loop < 0x100000; loop++) {
+ value = ReadFromPHY (PHY_REG_BMCR);
+ if (!(value & 0x8000)) {
+ // Reset has completed
+ break;
+ }
+ }
+
+ // Just check this actually is a DP83848C PHY
+ phyid1 = ReadFromPHY (PHY_REG_IDR1);
+ phyid2 = ReadFromPHY (PHY_REG_IDR2);
+
+ if (((phyid1 << 16) | (phyid2 & 0xFFF0)) == DP83848C_ID) {
+ phy_in_use = DP83848C_ID;
+ }
+ else if (((phyid1 << 16) | (phyid2 & 0xFFF0)) == LAN8720_ID) {
+ phy_in_use = LAN8720_ID;
+ }
+
+ if (phy_in_use != 0) {
+ // Safe to configure the PHY device
+
+ // Set PHY to autonegotiation link speed
+ WriteToPHY (PHY_REG_BMCR, PHY_AUTO_NEG);
+ // loop until autonegotiation completes
+ for (loop = 0; loop < 0x100000; loop++) {
+ value = ReadFromPHY (PHY_REG_BMSR);
+ if (value & 0x0020) {
+ // Autonegotiation has completed
+ break;
+ }
+ }
+ }
+
+ phy_linkstatus_reg = PHY_REG_STS; // Default to DP83848C
+ phy_linkstatus_mask = 0x0001;
+
+ if (phy_in_use == LAN8720_ID) {
+ phy_linkstatus_reg = PHY_REG_BMSR;
+ phy_linkstatus_mask = 0x0002;
+ }
+
+ // Now check the link status
+ for (loop = 0; loop < 0x10000; loop++) {
+ value = ReadFromPHY (phy_linkstatus_reg);
+ if (value & phy_linkstatus_mask) {
+ // The link is on
+ break;
+ }
+ }
+
+ // Now configure for full/half duplex mode
+ if (value & 0x0004) {
+ // We are in full duplex is enabled mode
+ LPC_EMAC->MAC2 |= MAC2_FULL_DUP;
+ LPC_EMAC->Command |= CR_FULL_DUP;
+ LPC_EMAC->IPGT = IPGT_FULL_DUP;
+ }
+ else {
+ // Otherwise we are in half duplex mode
+ LPC_EMAC->IPGT = IPGT_HALF_DUP;
+ }
+
+ // Now configure 100MBit or 10MBit mode
+ if (value & 0x0002) {
+ // 10MBit mode
+ LPC_EMAC->SUPP = 0;
+ }
+ else {
+ // 100MBit mode
+ LPC_EMAC->SUPP = SUPP_SPEED;
+ }
+
+ // Now set the Ethernet MAC Address registers
+ // NOTE - MAC address must be unique on the network!
+ LPC_EMAC->SA0 = (MYMAC_1 << 8) | MYMAC_2; // Station address 0 Reg
+ LPC_EMAC->SA1 = (MYMAC_3 << 8) | MYMAC_4; // Station address 1 Reg
+ LPC_EMAC->SA2 = (MYMAC_5 << 8) | MYMAC_6; // Station address 2 Reg
+
+
+ // Now initialise the Rx descriptors
+ for (loop = 0; loop < NUM_RX_FRAG; loop++) {
+ RX_DESC_PACKET(loop) = RX_BUF(loop);
+ RX_DESC_CTRL(loop) = RCTRL_INT | (ETH_FRAG_SIZE-1);
+ RX_STAT_INFO(loop) = 0;
+ RX_STAT_HASHCRC(loop) = 0;
+ }
+
+ // Set up the Receive Descriptor Base address register
+ LPC_EMAC->RxDescriptor = RX_DESC_BASE;
+ // Set up the Receive Status Base address register
+ LPC_EMAC->RxStatus = RX_STAT_BASE;
+ // Setup the Receive Number of Descriptor register
+ LPC_EMAC->RxDescriptorNumber = NUM_RX_FRAG-1;
+ // Set Receive Consume Index register to 0
+ LPC_EMAC->RxConsumeIndex = 0;
+
+ // Now initialise the Tx descriptors
+ for (loop = 0; loop < NUM_TX_FRAG; loop++) {
+ TX_DESC_PACKET(loop) = TX_BUF(loop);
+ TX_DESC_CTRL(loop) = 0;
+ TX_STAT_INFO(loop) = 0;
+ }
+
+ // Set up the Transmit Descriptor Base address register
+ LPC_EMAC->TxDescriptor = TX_DESC_BASE;
+ // Set up the Transmit Status Base address register
+ LPC_EMAC->TxStatus = TX_STAT_BASE;
+ // Setup the Transmit Number of Descriptor register
+ LPC_EMAC->TxDescriptorNumber = NUM_TX_FRAG-1;
+ // Set Transmit Consume Index register to 0
+ LPC_EMAC->TxProduceIndex = 0;
+
+ // Receive Broadcast and Perfect Match Packets
+
+
+
+ LPC_EMAC->RxFilterCtrl = RFC_BCAST_EN | RFC_PERFECT_EN;
+
+ // Enable interrupts MAC Module Control Interrupt Enable Register
+ LPC_EMAC->IntEnable = INT_RX_DONE | INT_TX_DONE;
+
+ // Reset all ethernet interrupts in MAC module
+ LPC_EMAC->IntClear = 0xFFFF;
+
+ // Finally enable receive and transmit mode in ethernet core
+ LPC_EMAC->Command |= (CR_RX_EN | CR_TX_EN);
+ LPC_EMAC->MAC1 |= MAC1_REC_EN;
+}
+
+
+// CodeRed - Write8900() not needed
+// for RDB1768 port
+
+/*
+// writes a word in little-endian byte order to
+// a specified port-address
+
+void Write8900(unsigned char Address, unsigned int Data)
+{
+ P5DIR = 0xFF; // data port to output
+ P3OUT = IOR | IOW | Address; // put address on bus
+
+ P5OUT = Data; // write low order byte to data bus
+ P3OUT &= ~IOW; // toggle IOW-signal
+ P3OUT = IOR | IOW | (Address + 1); // and put next address on bus
+
+ P5OUT = Data >> 8; // write high order byte to data bus
+ P3OUT &= ~IOW; // toggle IOW-signal
+ P3OUT |= IOW;
+}
+*/
+
+// Code Red - updated for LPC1776 port
+/*
+// writes a word in little-endian byte order to TX_FRAME_PORT
+
+void WriteFrame8900(unsigned int Data)
+{
+ P5DIR = 0xFF; // data port to output
+ P3OUT = IOR | IOW | TX_FRAME_PORT; // put address on bus
+
+ P5OUT = Data; // write low order byte to data bus
+ P3OUT &= ~IOW; // toggle IOW-signal
+ P3OUT = IOR | IOW | (TX_FRAME_PORT + 1); // and put next address on bus
+
+ P5OUT = Data >> 8; // write high order byte to data bus
+ P3OUT &= ~IOW; // toggle IOW-signal
+ P3OUT |= IOW;
+}
+*/
+
+// writes a word in little-endian byte order to TX_BUFFER
+void WriteFrame_EthMAC(unsigned short Data)
+{
+ *txptr++ = Data;
+}
+
+
+
+// copies bytes from MCU-memory to frame port
+// NOTES: * an odd number of byte may only be transfered
+// if the frame is written to the end!
+// * MCU-memory MUST start at word-boundary
+
+// Code Red - rewritten for LPC1776
+/*
+void CopyToFrame8900(void *Source, unsigned int Size)
+{
+ P5DIR = 0xFF; // data port to output
+
+ while (Size > 1) {
+ WriteFrame8900(*((unsigned int *)Source)++);
+ Size -= 2;
+ }
+
+ if (Size) // if odd num. of bytes...
+ WriteFrame8900(*(unsigned char *)Source); // write leftover byte (the LAN-controller
+} // ignores the highbyte)
+*/
+
+void CopyToFrame_EthMAC(void *Source, unsigned int Size)
+{
+ unsigned int index;
+ unsigned short *pSource;
+
+ pSource = (unsigned short *)Source;
+ Size = (Size + 1) & 0xFFFE; // round up Size to next even number
+ while (Size > 0) {
+ WriteFrame_EthMAC(*pSource++);
+ Size -= 2;
+ }
+
+ index = LPC_EMAC->TxProduceIndex;
+ if (++index == NUM_TX_FRAG)
+ index = 0;
+ LPC_EMAC->TxProduceIndex = index;
+}
+
+// CodeRed - Read8900() not needed
+// for LPC1768 port
+/*
+
+// reads a word in little-endian byte order from
+// a specified port-address
+
+unsigned int Read8900(unsigned char Address)
+{
+ unsigned int ReturnValue;
+
+ P5DIR = 0x00; // data port to input
+ P3OUT = IOR | IOW | Address; // put address on bus
+
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue = P5IN; // get low order byte from data bus
+ P3OUT = IOR | IOW | (Address + 1); // IOR high and put next address on bus
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue |= P5IN << 8; // get high order byte from data bus
+
+ P3OUT |= IOR;
+
+ return ReturnValue;
+}
+*/
+// reads a word in little-endian byte order from RX_FRAME_PORT
+
+// Code Red - ReadFrame8900 rewritten for RDB1768 port
+/*
+unsigned int ReadFrame8900(void)
+{
+ unsigned int ReturnValue;
+
+ P5DIR = 0x00; // data port to input
+ P3OUT = IOR | IOW | RX_FRAME_PORT; // access to RX_FRAME_PORT
+
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue = P5IN; // get 1st byte from data bus (low-byte)
+ P3OUT = IOR | IOW | (RX_FRAME_PORT + 1); // IOR high and put next address on bus
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue |= P5IN << 8; // get 2nd byte from data bus (high-byte)
+
+ P3OUT |= IOR;
+
+ return ReturnValue;
+}
+*/
+
+// reads a word in little-endian byte order from RX_BUFFER
+
+unsigned short ReadFrame_EthMAC(void)
+{
+ return (*rxptr++);
+}
+
+
+// reads a word in big-endian byte order from RX_FRAME_PORT
+// (useful to avoid permanent byte-swapping while reading
+// TCP/IP-data)
+
+// CodeRed - rewritten for LPC1768
+/*
+
+unsigned int ReadFrameBE8900(void)
+{
+ unsigned int ReturnValue;
+
+ P5DIR = 0x00; // data port to input
+ P3OUT = IOR | IOW | RX_FRAME_PORT; // access to RX_FRAME_PORT
+
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue = P5IN << 8; // get 1st byte from data bus (high-byte)
+ P3OUT = IOR | IOW | (RX_FRAME_PORT + 1); // IOR high and put next address on bus
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue |= P5IN; // get 2nd byte from data bus (low-byte)
+
+ P3OUT |= IOR;
+
+ return ReturnValue;
+}
+*/
+
+unsigned short ReadFrameBE_EthMAC(void)
+{
+ unsigned short ReturnValue;
+
+ ReturnValue = SwapBytes (*rxptr++);
+ return (ReturnValue);
+}
+
+// CodeRed - not required for RDB1768 port
+/*
+// reads a word in little-endian byte order from
+// a specified port-address
+// NOTE: this func. xfers the high-byte 1st, must be used to
+// access some special registers (e.g. RxStatus)
+
+unsigned int ReadHB1ST8900(unsigned char Address)
+{
+ unsigned int ReturnValue;
+
+ P5DIR = 0x00; // data port to input
+ P3OUT = IOR | IOW | (Address + 1); // put address on bus
+
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue = P5IN << 8; // get high order byte from data bus
+ P3OUT = IOR | IOW | Address; // IOR high and put next address on bus
+ P3OUT &= ~IOR; // IOR-signal low
+
+ ReturnValue |= P5IN; // get low order byte from data bus
+
+ P3OUT |= IOR;
+
+ return ReturnValue;
+}
+*/
+
+
+// copies bytes from frame port to MCU-memory
+// NOTES: * an odd number of byte may only be transfered
+// if the frame is read to the end!
+// * MCU-memory MUST start at word-boundary
+
+// Code Red - rewritten for LPC1776 port
+/*
+void CopyFromFrame8900(void *Dest, unsigned int Size)
+{
+ while (Size > 1) {
+ *((unsigned int *)Dest)++ = ReadFrame8900();
+ Size -= 2;
+ }
+
+ if (Size) // check for leftover byte...
+ *(unsigned char *)Dest = ReadFrame8900(); // the LAN-Controller will return 0
+} // for the highbyte
+*/
+
+void CopyFromFrame_EthMAC(void *Dest, unsigned short Size)
+{
+ unsigned short *pDest;
+
+ pDest = (unsigned short *)Dest;
+ while (Size > 1) {
+ *pDest++ = ReadFrame_EthMAC();
+ Size -= 2;
+ }
+
+ if (Size) { // check for leftover byte...
+ *(unsigned char *)pDest = (char)ReadFrame_EthMAC();// the LAN-Controller will return 0
+ } // for the highbyte
+}
+
+
+
+// does a dummy read on frame-I/O-port
+// NOTE: only an even number of bytes is read!
+
+// Code Red - updated for LPC1776
+//void DummyReadFrame8900(unsigned int Size) // discards an EVEN number of bytes
+void DummyReadFrame_EthMAC(unsigned short Size) // discards an EVEN number of bytes
+{ // from RX-fifo
+ while (Size > 1) {
+// Code Red - updated for LPC1776
+// ReadFrame8900();
+ ReadFrame_EthMAC();
+ Size -= 2;
+ }
+}
+
+// requests space in CS8900's on-chip memory for
+// storing an outgoing frame
+
+// CodeRed - updated for LPC1768 port
+/*
+void RequestSend(unsigned int FrameSize)
+{
+ Write8900(TX_CMD_PORT, TX_START_ALL_BYTES);
+ Write8900(TX_LEN_PORT, FrameSize);
+}
+*/
+void RequestSend(unsigned short FrameSize)
+{
+ unsigned int index;
+ index = LPC_EMAC->TxProduceIndex;
+ txptr = (unsigned short *)TX_DESC_PACKET(index);
+ TX_DESC_CTRL(index) = FrameSize | TCTRL_LAST;
+}
+
+// check if CS8900 is ready to accept the
+// frame we want to send
+
+unsigned int Rdy4Tx(void)
+{
+// Code Red - updated for LPC1768
+// Write8900(ADD_PORT, PP_BusST);
+// return (Read8900(DATA_PORT) & READY_FOR_TX_NOW);
+
+ // One the LPC the ethernet controller transmits
+ // much faster than the CPU can load its buffers
+ // so will always be ready to accept frame
+ return (1);
+ //
+}
+
+// CodeRed - New function
+
+// Reads length of received ethernet frame and checks
+// if destination address is a broadcast message or not.
+// Then returns the frame length
+unsigned short StartReadingFrame(void)
+{
+ unsigned short ReceiveLength;
+ unsigned int index;
+
+ index = LPC_EMAC->RxConsumeIndex;
+ ReceiveLength = (RX_STAT_INFO(index) & RINFO_SIZE) - 3;
+ rxptr = (unsigned short *)RX_DESC_PACKET(index);
+ return(ReceiveLength);
+}
+
+// CodeRed - new function
+
+void StopReadingFrame(void)
+{
+ unsigned int index;
+ index = LPC_EMAC->RxConsumeIndex;
+ if (++index == NUM_RX_FRAG) index = 0;
+ LPC_EMAC->RxConsumeIndex = index;
+}
+
+// CodeRed - new function to check if frame has been received
+unsigned int CheckIfFrameReceived(void)
+{
+ if (LPC_EMAC->RxProduceIndex != LPC_EMAC->RxConsumeIndex)
+ return(1); // Yes, packet received
+ else
+ return(0);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ethmac.h Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,630 @@
+/******************************************************************
+ ***** *****
+ ***** Name: cs8900.h *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** adannenb@et.htwk-leipzig.de *****
+ ***** Func: header-file for cs8900.c *****
+ ***** *****
+ ******************************************************************/
+
+// Modifications by Code Red Technologies for NXP LPC1768
+// Filename changed to ethmac.h as no longer for cs8900
+
+// CodeRed - update for new header filename
+//#ifndef __CS8900_H
+//#define __CS8900_H
+#ifndef __ETHMAC_H
+#define __ETHMAC_H
+
+#define MYMAC_1 1 // our ethernet (MAC) address
+#define MYMAC_2 2 // (MUST be unique in LAN!)
+#define MYMAC_3 3
+#define MYMAC_4 4
+#define MYMAC_5 5
+#define MYMAC_6 6
+
+
+// CodeRed - commented out original CS8900 defines
+/*
+#define IOR BIT6 // CS8900's ISA-bus interface pins
+#define IOW BIT7
+
+// definitions for Crystal CS8900 ethernet-controller
+// based on linux-header by Russel Nelson
+
+#define PP_ChipID 0x0000 // offset 0h -> Corp-ID
+ // offset 2h -> Model/Product Number
+ // offset 3h -> Chip Revision Number
+
+#define PP_ISAIOB 0x0020 // IO base address
+#define PP_CS8900_ISAINT 0x0022 // ISA interrupt select
+#define PP_CS8900_ISADMA 0x0024 // ISA Rec DMA channel
+#define PP_ISASOF 0x0026 // ISA DMA offset
+#define PP_DmaFrameCnt 0x0028 // ISA DMA Frame count
+#define PP_DmaByteCnt 0x002A // ISA DMA Byte count
+#define PP_CS8900_ISAMemB 0x002C // Memory base
+#define PP_ISABootBase 0x0030 // Boot Prom base
+#define PP_ISABootMask 0x0034 // Boot Prom Mask
+
+// EEPROM data and command registers
+#define PP_EECMD 0x0040 // NVR Interface Command register
+#define PP_EEData 0x0042 // NVR Interface Data Register
+
+// Configuration and control registers
+#define PP_RxCFG 0x0102 // Rx Bus config
+#define PP_RxCTL 0x0104 // Receive Control Register
+#define PP_TxCFG 0x0106 // Transmit Config Register
+#define PP_TxCMD 0x0108 // Transmit Command Register
+#define PP_BufCFG 0x010A // Bus configuration Register
+#define PP_LineCTL 0x0112 // Line Config Register
+#define PP_SelfCTL 0x0114 // Self Command Register
+#define PP_BusCTL 0x0116 // ISA bus control Register
+#define PP_TestCTL 0x0118 // Test Register
+
+// Status and Event Registers
+#define PP_ISQ 0x0120 // Interrupt Status
+#define PP_RxEvent 0x0124 // Rx Event Register
+#define PP_TxEvent 0x0128 // Tx Event Register
+#define PP_BufEvent 0x012C // Bus Event Register
+#define PP_RxMiss 0x0130 // Receive Miss Count
+#define PP_TxCol 0x0132 // Transmit Collision Count
+#define PP_LineST 0x0134 // Line State Register
+#define PP_SelfST 0x0136 // Self State register
+#define PP_BusST 0x0138 // Bus Status
+#define PP_TDR 0x013C // Time Domain Reflectometry
+
+// Initiate Transmit Registers
+#define PP_TxCommand 0x0144 // Tx Command
+#define PP_TxLength 0x0146 // Tx Length
+
+// Adress Filter Registers
+#define PP_LAF 0x0150 // Hash Table
+#define PP_IA 0x0158 // Physical Address Register
+
+// Frame Location
+#define PP_RxStatus 0x0400 // Receive start of frame
+#define PP_RxLength 0x0402 // Receive Length of frame
+#define PP_RxFrame 0x0404 // Receive frame pointer
+#define PP_TxFrame 0x0A00 // Transmit frame pointer
+
+// Primary I/O Base Address. If no I/O base is supplied by the user, then this
+// can be used as the default I/O base to access the PacketPage Area.
+#define DEFAULTIOBASE 0x0300
+
+// PP_RxCFG - Receive Configuration and Interrupt Mask bit definition - Read/write
+#define SKIP_1 0x0040
+#define RX_STREAM_ENBL 0x0080
+#define RX_OK_ENBL 0x0100
+#define RX_DMA_ONLY 0x0200
+#define AUTO_RX_DMA 0x0400
+#define BUFFER_CRC 0x0800
+#define RX_CRC_ERROR_ENBL 0x1000
+#define RX_RUNT_ENBL 0x2000
+#define RX_EXTRA_DATA_ENBL 0x4000
+
+// PP_RxCTL - Receive Control bit definition - Read/write
+#define RX_IA_HASH_ACCEPT 0x0040
+#define RX_PROM_ACCEPT 0x0080
+#define RX_OK_ACCEPT 0x0100
+#define RX_MULTCAST_ACCEPT 0x0200
+#define RX_IA_ACCEPT 0x0400
+#define RX_BROADCAST_ACCEPT 0x0800
+#define RX_BAD_CRC_ACCEPT 0x1000
+#define RX_RUNT_ACCEPT 0x2000
+#define RX_EXTRA_DATA_ACCEPT 0x4000
+
+// PP_TxCFG - Transmit Configuration Interrupt Mask bit definition - Read/write
+#define TX_LOST_CRS_ENBL 0x0040
+#define TX_SQE_ERROR_ENBL 0x0080
+#define TX_OK_ENBL 0x0100
+#define TX_LATE_COL_ENBL 0x0200
+#define TX_JBR_ENBL 0x0400
+#define TX_ANY_COL_ENBL 0x0800
+#define TX_16_COL_ENBL 0x8000
+
+// PP_TxCMD - Transmit Command bit definition - Read-only and
+// PP_TxCommand - Write-only
+#define TX_START_5_BYTES 0x0000
+#define TX_START_381_BYTES 0x0040
+#define TX_START_1021_BYTES 0x0080
+#define TX_START_ALL_BYTES 0x00C0
+#define TX_FORCE 0x0100
+#define TX_ONE_COL 0x0200
+#define TX_NO_CRC 0x1000
+#define TX_RUNT 0x2000
+
+// PP_BufCFG - Buffer Configuration Interrupt Mask bit definition - Read/write
+#define GENERATE_SW_INTERRUPT 0x0040
+#define RX_DMA_ENBL 0x0080
+#define READY_FOR_TX_ENBL 0x0100
+#define TX_UNDERRUN_ENBL 0x0200
+#define RX_MISS_ENBL 0x0400
+#define RX_128_BYTE_ENBL 0x0800
+#define TX_COL_COUNT_OVRFLOW_ENBL 0x1000
+#define RX_MISS_COUNT_OVRFLOW_ENBL 0x2000
+#define RX_DEST_MATCH_ENBL 0x8000
+
+// PP_LineCTL - Line Control bit definition - Read/write
+#define SERIAL_RX_ON 0x0040
+#define SERIAL_TX_ON 0x0080
+#define AUI_ONLY 0x0100
+#define AUTO_AUI_10BASET 0x0200
+#define MODIFIED_BACKOFF 0x0800
+#define NO_AUTO_POLARITY 0x1000
+#define TWO_PART_DEFDIS 0x2000
+#define LOW_RX_SQUELCH 0x4000
+
+// PP_SelfCTL - Software Self Control bit definition - Read/write
+#define POWER_ON_RESET 0x0040
+#define SW_STOP 0x0100
+#define SLEEP_ON 0x0200
+#define AUTO_WAKEUP 0x0400
+#define HCB0_ENBL 0x1000
+#define HCB1_ENBL 0x2000
+#define HCB0 0x4000
+#define HCB1 0x8000
+
+// PP_BusCTL - ISA Bus Control bit definition - Read/write
+#define RESET_RX_DMA 0x0040
+#define MEMORY_ON 0x0400
+#define DMA_BURST_MODE 0x0800
+#define IO_CHANNEL_READY_ON 0x1000
+#define RX_DMA_SIZE_64K 0x2000
+#define ENABLE_IRQ 0x8000
+
+// PP_TestCTL - Test Control bit definition - Read/write
+#define LINK_OFF 0x0080
+#define ENDEC_LOOPBACK 0x0200
+#define AUI_LOOPBACK 0x0400
+#define BACKOFF_OFF 0x0800
+#define FDX_8900 0x4000
+
+// PP_RxEvent - Receive Event Bit definition - Read-only
+#define RX_IA_HASHED 0x0040
+#define RX_DRIBBLE 0x0080
+#define RX_OK 0x0100
+#define RX_HASHED 0x0200
+#define RX_IA 0x0400
+#define RX_BROADCAST 0x0800
+#define RX_CRC_ERROR 0x1000
+#define RX_RUNT 0x2000
+#define RX_EXTRA_DATA 0x4000
+#define HASH_INDEX_MASK 0xFC00 // Hash-Table Index Mask (6 Bit)
+
+// PP_TxEvent - Transmit Event Bit definition - Read-only
+#define TX_LOST_CRS 0x0040
+#define TX_SQE_ERROR 0x0080
+#define TX_OK 0x0100
+#define TX_LATE_COL 0x0200
+#define TX_JBR 0x0400
+#define TX_16_COL 0x8000
+#define TX_COL_COUNT_MASK 0x7800
+
+// PP_BufEvent - Buffer Event Bit definition - Read-only
+#define SW_INTERRUPT 0x0040
+#define RX_DMA 0x0080
+#define READY_FOR_TX 0x0100
+#define TX_UNDERRUN 0x0200
+#define RX_MISS 0x0400
+#define RX_128_BYTE 0x0800
+#define TX_COL_OVRFLW 0x1000
+#define RX_MISS_OVRFLW 0x2000
+#define RX_DEST_MATCH 0x8000
+
+// PP_LineST - Ethernet Line Status bit definition - Read-only
+#define LINK_OK 0x0080
+#define AUI_ON 0x0100
+#define TENBASET_ON 0x0200
+#define POLARITY_OK 0x1000
+#define CRS_OK 0x4000
+
+// PP_SelfST - Chip Software Status bit definition
+#define ACTIVE_33V 0x0040
+#define INIT_DONE 0x0080
+#define SI_BUSY 0x0100
+#define EEPROM_PRESENT 0x0200
+#define EEPROM_OK 0x0400
+#define EL_PRESENT 0x0800
+#define EE_SIZE_64 0x1000
+
+// PP_BusST - ISA Bus Status bit definition
+#define TX_BID_ERROR 0x0080
+#define READY_FOR_TX_NOW 0x0100
+
+// The following block defines the ISQ event types
+#define ISQ_RX_EVENT 0x0004
+#define ISQ_TX_EVENT 0x0008
+#define ISQ_BUFFER_EVENT 0x000C
+#define ISQ_RX_MISS_EVENT 0x0010
+#define ISQ_TX_COL_EVENT 0x0012
+
+#define ISQ_EVENT_MASK 0x003F // ISQ mask to find out type of event
+
+// Ports for I/O-Mode
+#define RX_FRAME_PORT 0x0000
+#define TX_FRAME_PORT 0x0000
+#define TX_CMD_PORT 0x0004
+#define TX_LEN_PORT 0x0006
+#define ISQ_PORT 0x0008
+#define ADD_PORT 0x000A
+#define DATA_PORT 0x000C
+
+#define AUTOINCREMENT 0x8000 // Bit mask to set Bit-15 for autoincrement
+
+// EEProm Commands
+#define EEPROM_WRITE_EN 0x00F0
+#define EEPROM_WRITE_DIS 0x0000
+#define EEPROM_WRITE_CMD 0x0100
+#define EEPROM_READ_CMD 0x0200
+
+// Receive Header of each packet in receive area of memory for DMA-Mode
+#define RBUF_EVENT_LOW 0x0000 // Low byte of RxEvent
+#define RBUF_EVENT_HIGH 0x0001 // High byte of RxEvent
+#define RBUF_LEN_LOW 0x0002 // Length of received data - low byte
+#define RBUF_LEN_HI 0x0003 // Length of received data - high byte
+#define RBUF_HEAD_LEN 0x0004 // Length of this header
+
+// CodeRed - end of original CS8900 defines
+*/
+
+// *******
+// CodeRed - defines for LPC1768 ethernet
+// *******
+
+/* EMAC Memory Buffer configuration for 16K Ethernet RAM. */
+#define NUM_RX_FRAG 4 /* Num.of RX Fragments 4*1536= 6.0kB */
+#define NUM_TX_FRAG 2 /* Num.of TX Fragments 3*1536= 4.6kB */
+#define ETH_FRAG_SIZE 1536 /* Packet Fragment size 1536 Bytes */
+
+#define ETH_MAX_FLEN 1536 /* Max. Ethernet Frame Size */
+
+/* EMAC variables located in AHB SRAM bank 1*/
+// Below is base address for first silicon
+//#define RX_DESC_BASE 0x20004000
+// Below is base address for production silicon
+#define RX_DESC_BASE 0x2007c000
+#define RX_STAT_BASE (RX_DESC_BASE + NUM_RX_FRAG*8)
+#define TX_DESC_BASE (RX_STAT_BASE + NUM_RX_FRAG*8)
+#define TX_STAT_BASE (TX_DESC_BASE + NUM_TX_FRAG*8)
+#define RX_BUF_BASE (TX_STAT_BASE + NUM_TX_FRAG*4)
+#define TX_BUF_BASE (RX_BUF_BASE + NUM_RX_FRAG*ETH_FRAG_SIZE)
+
+/* RX and TX descriptor and status definitions. */
+#define RX_DESC_PACKET(i) (*(unsigned int *)(RX_DESC_BASE + 8*i))
+#define RX_DESC_CTRL(i) (*(unsigned int *)(RX_DESC_BASE+4 + 8*i))
+#define RX_STAT_INFO(i) (*(unsigned int *)(RX_STAT_BASE + 8*i))
+#define RX_STAT_HASHCRC(i) (*(unsigned int *)(RX_STAT_BASE+4 + 8*i))
+#define TX_DESC_PACKET(i) (*(unsigned int *)(TX_DESC_BASE + 8*i))
+#define TX_DESC_CTRL(i) (*(unsigned int *)(TX_DESC_BASE+4 + 8*i))
+#define TX_STAT_INFO(i) (*(unsigned int *)(TX_STAT_BASE + 4*i))
+#define RX_BUF(i) (RX_BUF_BASE + ETH_FRAG_SIZE*i)
+#define TX_BUF(i) (TX_BUF_BASE + ETH_FRAG_SIZE*i)
+
+/* MAC Configuration Register 1 */
+#define MAC1_REC_EN 0x00000001 /* Receive Enable */
+#define MAC1_PASS_ALL 0x00000002 /* Pass All Receive Frames */
+#define MAC1_RX_FLOWC 0x00000004 /* RX Flow Control */
+#define MAC1_TX_FLOWC 0x00000008 /* TX Flow Control */
+#define MAC1_LOOPB 0x00000010 /* Loop Back Mode */
+#define MAC1_RES_TX 0x00000100 /* Reset TX Logic */
+#define MAC1_RES_MCS_TX 0x00000200 /* Reset MAC TX Control Sublayer */
+#define MAC1_RES_RX 0x00000400 /* Reset RX Logic */
+#define MAC1_RES_MCS_RX 0x00000800 /* Reset MAC RX Control Sublayer */
+#define MAC1_SIM_RES 0x00004000 /* Simulation Reset */
+#define MAC1_SOFT_RES 0x00008000 /* Soft Reset MAC */
+
+/* MAC Configuration Register 2 */
+#define MAC2_FULL_DUP 0x00000001 /* Full Duplex Mode */
+#define MAC2_FRM_LEN_CHK 0x00000002 /* Frame Length Checking */
+#define MAC2_HUGE_FRM_EN 0x00000004 /* Huge Frame Enable */
+#define MAC2_DLY_CRC 0x00000008 /* Delayed CRC Mode */
+#define MAC2_CRC_EN 0x00000010 /* Append CRC to every Frame */
+#define MAC2_PAD_EN 0x00000020 /* Pad all Short Frames */
+#define MAC2_VLAN_PAD_EN 0x00000040 /* VLAN Pad Enable */
+#define MAC2_ADET_PAD_EN 0x00000080 /* Auto Detect Pad Enable */
+#define MAC2_PPREAM_ENF 0x00000100 /* Pure Preamble Enforcement */
+#define MAC2_LPREAM_ENF 0x00000200 /* Long Preamble Enforcement */
+#define MAC2_NO_BACKOFF 0x00001000 /* No Backoff Algorithm */
+#define MAC2_BACK_PRESSURE 0x00002000 /* Backoff Presurre / No Backoff */
+#define MAC2_EXCESS_DEF 0x00004000 /* Excess Defer */
+
+/* Back-to-Back Inter-Packet-Gap Register */
+#define IPGT_FULL_DUP 0x00000015 /* Recommended value for Full Duplex */
+#define IPGT_HALF_DUP 0x00000012 /* Recommended value for Half Duplex */
+
+/* Non Back-to-Back Inter-Packet-Gap Register */
+#define IPGR_DEF 0x00000012 /* Recommended value */
+
+/* Collision Window/Retry Register */
+#define CLRT_DEF 0x0000370F /* Default value */
+
+/* PHY Support Register */
+#define SUPP_SPEED 0x00000100 /* Reduced MII Logic Current Speed */
+
+/* Test Register */
+#define TEST_SHCUT_PQUANTA 0x00000001 /* Shortcut Pause Quanta */
+#define TEST_TST_PAUSE 0x00000002 /* Test Pause */
+#define TEST_TST_BACKP 0x00000004 /* Test Back Pressure */
+
+/* MII Management Configuration Register */
+#define MCFG_SCAN_INC 0x00000001 /* Scan Increment PHY Address */
+#define MCFG_SUPP_PREAM 0x00000002 /* Suppress Preamble */
+#define MCFG_CLK_SEL 0x0000001C /* Clock Select Mask */
+#define MCFG_RES_MII 0x00008000 /* Reset MII Management Hardware */
+
+/* MII Management Command Register */
+#define MCMD_READ 0x00000001 /* MII Read */
+#define MCMD_SCAN 0x00000002 /* MII Scan continuously */
+
+#define MII_WR_TOUT 0x00050000 /* MII Write timeout count */
+#define MII_RD_TOUT 0x00050000 /* MII Read timeout count */
+
+/* MII Management Address Register */
+#define MADR_REG_ADR 0x0000001F /* MII Register Address Mask */
+#define MADR_PHY_ADR 0x00001F00 /* PHY Address Mask */
+
+/* MII Management Indicators Register */
+#define MIND_BUSY 0x00000001 /* MII is Busy */
+#define MIND_SCAN 0x00000002 /* MII Scanning in Progress */
+#define MIND_NOT_VAL 0x00000004 /* MII Read Data not valid */
+#define MIND_MII_LINK_FAIL 0x00000008 /* MII Link Failed */
+
+/* Command Register */
+#define CR_RX_EN 0x00000001 /* Enable Receive */
+#define CR_TX_EN 0x00000002 /* Enable Transmit */
+#define CR_REG_RES 0x00000008 /* Reset Host Registers */
+#define CR_TX_RES 0x00000010 /* Reset Transmit Datapath */
+#define CR_RX_RES 0x00000020 /* Reset Receive Datapath */
+#define CR_PASS_RUNT_FRM 0x00000040 /* Pass Runt Frames */
+#define CR_PASS_RX_FILT 0x00000080 /* Pass RX Filter */
+#define CR_TX_FLOW_CTRL 0x00000100 /* TX Flow Control */
+#define CR_RMII 0x00000200 /* Reduced MII Interface */
+#define CR_FULL_DUP 0x00000400 /* Full Duplex */
+
+/* Status Register */
+#define SR_RX_EN 0x00000001 /* Enable Receive */
+#define SR_TX_EN 0x00000002 /* Enable Transmit */
+
+/* Transmit Status Vector 0 Register */
+#define TSV0_CRC_ERR 0x00000001 /* CRC error */
+#define TSV0_LEN_CHKERR 0x00000002 /* Length Check Error */
+#define TSV0_LEN_OUTRNG 0x00000004 /* Length Out of Range */
+#define TSV0_DONE 0x00000008 /* Tramsmission Completed */
+#define TSV0_MCAST 0x00000010 /* Multicast Destination */
+#define TSV0_BCAST 0x00000020 /* Broadcast Destination */
+#define TSV0_PKT_DEFER 0x00000040 /* Packet Deferred */
+#define TSV0_EXC_DEFER 0x00000080 /* Excessive Packet Deferral */
+#define TSV0_EXC_COLL 0x00000100 /* Excessive Collision */
+#define TSV0_LATE_COLL 0x00000200 /* Late Collision Occured */
+#define TSV0_GIANT 0x00000400 /* Giant Frame */
+#define TSV0_UNDERRUN 0x00000800 /* Buffer Underrun */
+#define TSV0_BYTES 0x0FFFF000 /* Total Bytes Transferred */
+#define TSV0_CTRL_FRAME 0x10000000 /* Control Frame */
+#define TSV0_PAUSE 0x20000000 /* Pause Frame */
+#define TSV0_BACK_PRESS 0x40000000 /* Backpressure Method Applied */
+#define TSV0_VLAN 0x80000000 /* VLAN Frame */
+
+/* Transmit Status Vector 1 Register */
+#define TSV1_BYTE_CNT 0x0000FFFF /* Transmit Byte Count */
+#define TSV1_COLL_CNT 0x000F0000 /* Transmit Collision Count */
+
+/* Receive Status Vector Register */
+#define RSV_BYTE_CNT 0x0000FFFF /* Receive Byte Count */
+#define RSV_PKT_IGNORED 0x00010000 /* Packet Previously Ignored */
+#define RSV_RXDV_SEEN 0x00020000 /* RXDV Event Previously Seen */
+#define RSV_CARR_SEEN 0x00040000 /* Carrier Event Previously Seen */
+#define RSV_REC_CODEV 0x00080000 /* Receive Code Violation */
+#define RSV_CRC_ERR 0x00100000 /* CRC Error */
+#define RSV_LEN_CHKERR 0x00200000 /* Length Check Error */
+#define RSV_LEN_OUTRNG 0x00400000 /* Length Out of Range */
+#define RSV_REC_OK 0x00800000 /* Frame Received OK */
+#define RSV_MCAST 0x01000000 /* Multicast Frame */
+#define RSV_BCAST 0x02000000 /* Broadcast Frame */
+#define RSV_DRIB_NIBB 0x04000000 /* Dribble Nibble */
+#define RSV_CTRL_FRAME 0x08000000 /* Control Frame */
+#define RSV_PAUSE 0x10000000 /* Pause Frame */
+#define RSV_UNSUPP_OPC 0x20000000 /* Unsupported Opcode */
+#define RSV_VLAN 0x40000000 /* VLAN Frame */
+
+/* Flow Control Counter Register */
+#define FCC_MIRR_CNT 0x0000FFFF /* Mirror Counter */
+#define FCC_PAUSE_TIM 0xFFFF0000 /* Pause Timer */
+
+/* Flow Control Status Register */
+#define FCS_MIRR_CNT 0x0000FFFF /* Mirror Counter Current */
+
+/* Receive Filter Control Register */
+#define RFC_UCAST_EN 0x00000001 /* Accept Unicast Frames Enable */
+#define RFC_BCAST_EN 0x00000002 /* Accept Broadcast Frames Enable */
+#define RFC_MCAST_EN 0x00000004 /* Accept Multicast Frames Enable */
+#define RFC_UCAST_HASH_EN 0x00000008 /* Accept Unicast Hash Filter Frames */
+#define RFC_MCAST_HASH_EN 0x00000010 /* Accept Multicast Hash Filter Fram.*/
+#define RFC_PERFECT_EN 0x00000020 /* Accept Perfect Match Enable */
+#define RFC_MAGP_WOL_EN 0x00001000 /* Magic Packet Filter WoL Enable */
+#define RFC_PFILT_WOL_EN 0x00002000 /* Perfect Filter WoL Enable */
+
+/* Receive Filter WoL Status/Clear Registers */
+#define WOL_UCAST 0x00000001 /* Unicast Frame caused WoL */
+#define WOL_BCAST 0x00000002 /* Broadcast Frame caused WoL */
+#define WOL_MCAST 0x00000004 /* Multicast Frame caused WoL */
+#define WOL_UCAST_HASH 0x00000008 /* Unicast Hash Filter Frame WoL */
+#define WOL_MCAST_HASH 0x00000010 /* Multicast Hash Filter Frame WoL */
+#define WOL_PERFECT 0x00000020 /* Perfect Filter WoL */
+#define WOL_RX_FILTER 0x00000080 /* RX Filter caused WoL */
+#define WOL_MAG_PACKET 0x00000100 /* Magic Packet Filter caused WoL */
+
+/* Interrupt Status/Enable/Clear/Set Registers */
+#define INT_RX_OVERRUN 0x00000001 /* Overrun Error in RX Queue */
+#define INT_RX_ERR 0x00000002 /* Receive Error */
+#define INT_RX_FIN 0x00000004 /* RX Finished Process Descriptors */
+#define INT_RX_DONE 0x00000008 /* Receive Done */
+#define INT_TX_UNDERRUN 0x00000010 /* Transmit Underrun */
+#define INT_TX_ERR 0x00000020 /* Transmit Error */
+#define INT_TX_FIN 0x00000040 /* TX Finished Process Descriptors */
+#define INT_TX_DONE 0x00000080 /* Transmit Done */
+#define INT_SOFT_INT 0x00001000 /* Software Triggered Interrupt */
+#define INT_WAKEUP 0x00002000 /* Wakeup Event Interrupt */
+
+/* Power Down Register */
+#define PD_POWER_DOWN 0x80000000 /* Power Down MAC */
+
+/* RX Descriptor Control Word */
+#define RCTRL_SIZE 0x000007FF /* Buffer size mask */
+#define RCTRL_INT 0x80000000 /* Generate RxDone Interrupt */
+
+/* RX Status Hash CRC Word */
+#define RHASH_SA 0x000001FF /* Hash CRC for Source Address */
+#define RHASH_DA 0x001FF000 /* Hash CRC for Destination Address */
+
+/* RX Status Information Word */
+#define RINFO_SIZE 0x000007FF /* Data size in bytes */
+#define RINFO_CTRL_FRAME 0x00040000 /* Control Frame */
+#define RINFO_VLAN 0x00080000 /* VLAN Frame */
+#define RINFO_FAIL_FILT 0x00100000 /* RX Filter Failed */
+#define RINFO_MCAST 0x00200000 /* Multicast Frame */
+#define RINFO_BCAST 0x00400000 /* Broadcast Frame */
+#define RINFO_CRC_ERR 0x00800000 /* CRC Error in Frame */
+#define RINFO_SYM_ERR 0x01000000 /* Symbol Error from PHY */
+#define RINFO_LEN_ERR 0x02000000 /* Length Error */
+#define RINFO_RANGE_ERR 0x04000000 /* Range Error (exceeded max. size) */
+#define RINFO_ALIGN_ERR 0x08000000 /* Alignment Error */
+#define RINFO_OVERRUN 0x10000000 /* Receive overrun */
+#define RINFO_NO_DESCR 0x20000000 /* No new Descriptor available */
+#define RINFO_LAST_FLAG 0x40000000 /* Last Fragment in Frame */
+#define RINFO_ERR 0x80000000 /* Error Occured (OR of all errors) */
+
+#define RINFO_ERR_MASK (RINFO_FAIL_FILT | RINFO_CRC_ERR | RINFO_SYM_ERR | \
+ RINFO_LEN_ERR | RINFO_ALIGN_ERR | RINFO_OVERRUN)
+
+/* TX Descriptor Control Word */
+#define TCTRL_SIZE 0x000007FF /* Size of data buffer in bytes */
+#define TCTRL_OVERRIDE 0x04000000 /* Override Default MAC Registers */
+#define TCTRL_HUGE 0x08000000 /* Enable Huge Frame */
+#define TCTRL_PAD 0x10000000 /* Pad short Frames to 64 bytes */
+#define TCTRL_CRC 0x20000000 /* Append a hardware CRC to Frame */
+#define TCTRL_LAST 0x40000000 /* Last Descriptor for TX Frame */
+#define TCTRL_INT 0x80000000 /* Generate TxDone Interrupt */
+
+/* TX Status Information Word */
+#define TINFO_COL_CNT 0x01E00000 /* Collision Count */
+#define TINFO_DEFER 0x02000000 /* Packet Deferred (not an error) */
+#define TINFO_EXCESS_DEF 0x04000000 /* Excessive Deferral */
+#define TINFO_EXCESS_COL 0x08000000 /* Excessive Collision */
+#define TINFO_LATE_COL 0x10000000 /* Late Collision Occured */
+#define TINFO_UNDERRUN 0x20000000 /* Transmit Underrun */
+#define TINFO_NO_DESCR 0x40000000 /* No new Descriptor available */
+#define TINFO_ERR 0x80000000 /* Error Occured (OR of all errors) */
+
+/* ENET Device Revision ID */
+#define OLD_EMAC_MODULE_ID 0x39022000 /* Rev. ID for first rev '-' */
+
+/* DP83848C PHY Registers */
+#define PHY_REG_BMCR 0x00 /* Basic Mode Control Register */
+#define PHY_REG_BMSR 0x01 /* Basic Mode Status Register */
+#define PHY_REG_IDR1 0x02 /* PHY Identifier 1 */
+#define PHY_REG_IDR2 0x03 /* PHY Identifier 2 */
+#define PHY_REG_ANAR 0x04 /* Auto-Negotiation Advertisement */
+#define PHY_REG_ANLPAR 0x05 /* Auto-Neg. Link Partner Abitily */
+#define PHY_REG_ANER 0x06 /* Auto-Neg. Expansion Register */
+#define PHY_REG_ANNPTR 0x07 /* Auto-Neg. Next Page TX */
+
+/* PHY Extended Registers */
+#define PHY_REG_STS 0x10 /* Status Register */
+#define PHY_REG_MICR 0x11 /* MII Interrupt Control Register */
+#define PHY_REG_MISR 0x12 /* MII Interrupt Status Register */
+#define PHY_REG_FCSCR 0x14 /* False Carrier Sense Counter */
+#define PHY_REG_RECR 0x15 /* Receive Error Counter */
+#define PHY_REG_PCSR 0x16 /* PCS Sublayer Config. and Status */
+#define PHY_REG_RBR 0x17 /* RMII and Bypass Register */
+#define PHY_REG_LEDCR 0x18 /* LED Direct Control Register */
+#define PHY_REG_PHYCR 0x19 /* PHY Control Register */
+#define PHY_REG_10BTSCR 0x1A /* 10Base-T Status/Control Register */
+#define PHY_REG_CDCTRL1 0x1B /* CD Test Control and BIST Extens. */
+#define PHY_REG_EDCR 0x1D /* Energy Detect Control Register */
+
+#define PHY_FULLD_100M 0x2100 /* Full Duplex 100Mbit */
+#define PHY_HALFD_100M 0x2000 /* Half Duplex 100Mbit */
+#define PHY_FULLD_10M 0x0100 /* Full Duplex 10Mbit */
+#define PHY_HALFD_10M 0x0000 /* Half Duplex 10MBit */
+#define PHY_AUTO_NEG 0x3000 /* Select Auto Negotiation */
+
+#define DP83848C_DEF_ADR 0x0100 /* Default PHY device address */
+#define DP83848C_ID 0x20005C90 /* PHY Identifier */
+
+
+/*************************************************
+ * CodeRed - PHY definitions for RDB1768 rev 2
+ * which uses SMSC LAN8720 PHY instead of DP83848C
+ *************************************************/
+#define LAN8720_ID 0x000730F0 /* PHY Identifier */
+
+
+
+
+// Code Red - not required for RDB1768 port
+/*
+// typedefs
+typedef struct { // struct to store CS8900's
+ unsigned int Addr; // init-sequence
+ unsigned int Data;
+} TInitSeq;
+*/
+
+// Code Red - moved into tcpip.c
+/*
+// constants
+const unsigned char MyMAC[] = // "M1-M2-M3-M4-M5-M6"
+{
+ MYMAC_1, MYMAC_2, MYMAC_3,
+ MYMAC_4, MYMAC_5, MYMAC_6
+};
+*/
+
+// Code Red - not required for RDB1768 port
+/*
+const TInitSeq InitSeq[] =
+{
+ PP_IA, MYMAC_1 + (MYMAC_2 << 8), // set our MAC as Individual Address
+ PP_IA + 2, MYMAC_3 + (MYMAC_4 << 8),
+ PP_IA + 4, MYMAC_5 + (MYMAC_6 << 8),
+ PP_LineCTL, SERIAL_RX_ON | SERIAL_TX_ON, // configure the Physical Interface
+ PP_RxCTL, RX_OK_ACCEPT | RX_IA_ACCEPT | RX_BROADCAST_ACCEPT
+};
+*/
+
+// prototypes
+
+// CodeRed - updated for LPC1768 port
+/*
+void Init8900(void);
+void Write8900(unsigned char Address, unsigned int Data);
+void WriteFrame8900(unsigned int Data);
+unsigned int Read8900(unsigned char Address);
+unsigned int ReadFrame8900(void);
+unsigned int ReadHB1ST8900(unsigned char Address);
+unsigned int ReadFrameBE8900(void);
+void CopyToFrame8900(void *Source, unsigned int Size);
+void CopyFromFrame8900(void *Dest, unsigned int Size);
+void DummyReadFrame8900(unsigned int Size);
+void RequestSend(unsigned int FrameSize);
+unsigned int Rdy4Tx(void);
+*/
+
+void Init_EthMAC(void);
+unsigned short ReadFrameBE_EthMAC(void);
+void CopyToFrame_EthMAC(void *Source, unsigned int Size);
+void CopyFromFrame_EthMAC(void *Dest, unsigned short Size);
+void DummyReadFrame_EthMAC(unsigned short Size);
+void RequestSend(unsigned short FrameSize);
+unsigned int Rdy4Tx(void);
+unsigned short StartReadingFrame(void);
+void StopReadingFrame(void);
+unsigned int CheckIfFrameReceived(void);
+
+#endif
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ew_systick.c Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,61 @@
+//*****************************************************************************
+// +--+
+// | ++----+
+// +-++ |
+// | |
+// +-+--+ |
+// | +--+--+
+// +----+ Copyright (c) 2009 Code Red Technologies Ltd.
+//
+// ew_systick.c provided SysTick functions for use by EasyWeb port to RDB1768
+//
+// Software License Agreement
+//
+// The software is owned by Code Red Technologies and/or its suppliers, and is
+// protected under applicable copyright laws. All rights are reserved. Any
+// use in violation of the foregoing restrictions may subject the user to criminal
+// sanctions under applicable laws, as well as to civil liability for the breach
+// of the terms and conditions of this license.
+//
+// THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
+// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
+// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
+// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
+// CODE RED TECHNOLOGIES LTD.
+
+#include <mbed.h>
+
+extern void TCPClockHandler(void);
+
+volatile uint32_t TimeTick = 0;
+volatile uint32_t TimeTick2 = 0;
+
+
+// ****************
+// SysTick_Handler
+void SysTick_Handler(void)
+{
+ TimeTick++; // Increment first SysTick counter
+ TimeTick2++; // Increment second SysTick counter
+
+ // After 100 ticks (100 x 10ms = 1sec)
+ if (TimeTick >= 100) {
+ TimeTick = 0; // Reset counter
+ LPC_GPIO1->FIOPIN ^= 1 << 25; // Toggle user LED
+ }
+ // After 20 ticks (20 x 10ms = 1/5sec)
+ if (TimeTick2 >= 20) {
+ TimeTick2 = 0; // Reset counter
+ TCPClockHandler(); // Call TCP handler
+ }
+}
+
+// ****************
+// Setup SysTick Timer to interrupt at 10 msec intervals
+void Start_SysTick10ms(void)
+{
+ if (SysTick_Config(SystemCoreClock / 100)) {
+ while (1); // Capture error
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Jan 29 21:46:31 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/49a220cc26e0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tcpip.c Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,1291 @@
+/******************************************************************
+ ***** *****
+ ***** Name: tcpip.c *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** adannenb@et.htwk-leipzig.de *****
+ ***** Func: implements the TCP/IP-stack and provides a *****
+ ***** simple API to the user *****
+ ***** *****
+ ******************************************************************/
+
+// Modifications by Code Red Technologies for NXP LPC1768
+// Throughout file, functions of form xxx8900() renamed xxx_EthMAC()
+// Other changes commented in place
+
+#include "tcpip.h"
+
+//CodeRed - added header for LPC ethernet controller
+#include "ethmac.h"
+// CodeRed - added library string handling header
+#include <string.h>
+
+// CodeRed - added NXP LPC register definitions header
+//#include "LPC17xx.h"
+
+#include "mbed.h"
+
+unsigned short MyIP[] = // "MYIP1.MYIP2.MYIP3.MYIP4"
+{
+ MYIP_1 + (MYIP_2 << 8),
+ MYIP_3 + (MYIP_4 << 8)
+};
+
+unsigned short SubnetMask[] = // "SUBMASK1.SUBMASK2.SUBMASK3.SUBMASK4"
+{
+ SUBMASK_1 + (SUBMASK_2 << 8),
+ SUBMASK_3 + (SUBMASK_4 << 8)
+};
+
+unsigned short GatewayIP[] = // "GWIP1.GWIP2.GWIP3.GWIP4"
+{
+ GWIP_1 + (GWIP_2 << 8),
+ GWIP_3 + (GWIP_4 << 8)
+};
+
+// the next 3 buffers must be word-aligned!
+// (here the 'RecdIPFrameLength' above does that)
+unsigned short _TxFrame1[(ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE + MAX_TCP_TX_DATA_SIZE)/2];
+unsigned short _TxFrame2[(ETH_HEADER_SIZE + MAX_ETH_TX_DATA_SIZE)/2];
+unsigned short _RxTCPBuffer[MAX_TCP_RX_DATA_SIZE/2]; // space for incoming TCP-data
+
+unsigned short TxFrame1Size; // bytes to send in TxFrame1
+unsigned char TxFrame2Size; // bytes to send in TxFrame2
+
+unsigned char TransmitControl;
+#define SEND_FRAME1 0x01
+#define SEND_FRAME2 0x02
+
+unsigned char TCPFlags;
+#define TCP_ACTIVE_OPEN 0x01 // easyWEB shall initiate a connection
+#define IP_ADDR_RESOLVED 0x02 // IP sucessfully resolved to MAC
+#define TCP_TIMER_RUNNING 0x04
+#define TIMER_TYPE_RETRY 0x08
+#define TCP_CLOSE_REQUESTED 0x10
+
+// easyWEB's internal variables
+TTCPStateMachine TCPStateMachine; // perhaps the most important var at all ;-)
+TLastFrameSent LastFrameSent; // retransmission type
+
+unsigned short ISNGenHigh; // upper word of our Initial Sequence Number
+unsigned long TCPSeqNr; // next sequence number to send
+unsigned long TCPUNASeqNr; // last unaknowledged sequence number
+ // incremented AFTER sending data
+unsigned long TCPAckNr; // next seq to receive and ack to send
+ // incremented AFTER receiving data
+unsigned char TCPTimer; // inc'd each 262ms
+unsigned char RetryCounter; // nr. of retransmissions
+
+// properties of the just received frame
+unsigned short RecdFrameLength; // EMAC reported frame length
+unsigned short RecdFrameMAC[3]; // 48 bit MAC
+unsigned short RecdFrameIP[2]; // 32 bit IP
+unsigned short RecdIPFrameLength; // 16 bit IP packet length
+
+// easyWEB-API global vars and flags
+unsigned short TCPRxDataCount; // nr. of bytes rec'd
+unsigned short TCPTxDataCount; // nr. of bytes to send
+
+unsigned short TCPLocalPort; // TCP ports
+unsigned short TCPRemotePort;
+
+unsigned short RemoteMAC[3]; // MAC and IP of current TCP-session
+unsigned short RemoteIP[2];
+
+unsigned char SocketStatus;
+
+void Start_SysTick10ms(void);
+
+// Code Red - moved myMAC definition in from original cs8900.h
+unsigned char MyMAC[6] = // "M1-M2-M3-M4-M5-M6"
+{
+ MYMAC_6, MYMAC_5, MYMAC_4,
+ MYMAC_3, MYMAC_2, MYMAC_1
+};
+
+// easyWEB-API function
+// initalizes the LAN-controller, reset flags, starts timer-ISR
+
+void TCPLowLevelInit(void)
+{
+// CodeRed - comment out original 8900 specific code
+/*
+ BCSCTL1 &= ~DIVA0; // ACLK = XT1 / 4 = 2 MHz
+ BCSCTL1 |= DIVA1;
+ TACTL = ID1 | ID0 | TASSEL0 | TAIE; // stop timer, use ACLK / 8 = 250 kHz, gen. int.
+ TACTL |= MC1; // start timer in continuous up-mode
+ _EINT(); // enable interrupts
+
+ Init8900();
+*/
+ LPC_GPIO1->FIODIR = 1 << 25; // P1.25 defined as Output (LED)
+
+ Start_SysTick10ms(); // Start SysTick timer running (10ms ticks)
+
+ Init_EthMAC();
+
+ TransmitControl = 0;
+ TCPFlags = 0;
+ TCPStateMachine = CLOSED;
+ SocketStatus = 0;
+}
+
+// easyWEB-API function
+// does a passive open (listen on 'MyIP:TCPLocalPort' for an incoming
+// connection)
+
+void TCPPassiveOpen(void)
+{
+ if (TCPStateMachine == CLOSED)
+ {
+ TCPFlags &= ~TCP_ACTIVE_OPEN; // let's do a passive open!
+ TCPStateMachine = LISTENING;
+ SocketStatus = SOCK_ACTIVE; // reset, socket now active
+ }
+}
+
+// easyWEB-API function
+// does an active open (tries to establish a connection between
+// 'MyIP:TCPLocalPort' and 'RemoteIP:TCPRemotePort')
+
+void TCPActiveOpen(void)
+{
+ if ((TCPStateMachine == CLOSED) || (TCPStateMachine == LISTENING))
+ {
+ TCPFlags |= TCP_ACTIVE_OPEN; // let's do an active open!
+ TCPFlags &= ~IP_ADDR_RESOLVED; // we haven't opponents MAC yet
+
+ PrepareARP_REQUEST(); // ask for MAC by sending a broadcast
+ LastFrameSent = ARP_REQUEST;
+ TCPStartRetryTimer();
+ SocketStatus = SOCK_ACTIVE; // reset, socket now active
+ }
+}
+
+// easyWEB-API function
+// closes an open connection
+
+void TCPClose(void)
+{
+ switch (TCPStateMachine)
+ {
+ case LISTENING :
+ case SYN_SENT :
+ {
+ TCPStateMachine = CLOSED;
+ TCPFlags = 0;
+ SocketStatus = 0;
+ break;
+ }
+ case SYN_RECD :
+ case ESTABLISHED :
+ {
+ TCPFlags |= TCP_CLOSE_REQUESTED;
+ break;
+ }
+ }
+}
+
+// easyWEB-API function
+// releases the receive-buffer and allows easyWEB to store new data
+// NOTE: rx-buffer MUST be released periodically, else the other TCP
+// get no ACKs for the data it sent
+
+void TCPReleaseRxBuffer(void)
+{
+ SocketStatus &= ~SOCK_DATA_AVAILABLE;
+}
+
+// easyWEB-API function
+// transmitts data stored in 'TCP_TX_BUF'
+// NOTE: * number of bytes to transmit must have been written to 'TCPTxDataCount'
+// * data-count MUST NOT exceed 'MAX_TCP_TX_DATA_SIZE'
+
+void TCPTransmitTxBuffer(void)
+{
+ if ((TCPStateMachine == ESTABLISHED) || (TCPStateMachine == CLOSE_WAIT))
+ if (SocketStatus & SOCK_TX_BUF_RELEASED)
+ {
+ SocketStatus &= ~SOCK_TX_BUF_RELEASED; // occupy tx-buffer
+ TCPUNASeqNr += TCPTxDataCount; // advance UNA
+
+ TxFrame1Size = ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE + TCPTxDataCount;
+ TransmitControl |= SEND_FRAME1;
+
+ LastFrameSent = TCP_DATA_FRAME;
+ TCPStartRetryTimer();
+ }
+}
+
+// CodeRed - New function to check if received frame
+// was a broadcast message
+
+// Reads the length of the received ethernet frame and checks if the
+// destination address is a broadcast message or not
+unsigned int BroadcastMessage(void)
+{
+ unsigned short FrameDestination[3]; // to hold 48 bit MAC address
+
+ RecdFrameLength = StartReadingFrame();
+
+ // Read destination address
+ CopyFromFrame_EthMAC(&FrameDestination, 6);
+ // Save it for reply
+ CopyFromFrame_EthMAC(&RecdFrameMAC, 6);
+
+ if ((FrameDestination[0] == 0xFFFF) &&
+ (FrameDestination[1] == 0xFFFF) &&
+ (FrameDestination[2] == 0xFFFF)) {
+ return(1); // Broadcast message
+ } else {
+ return (0);
+ }
+}
+
+
+// easyWEB's 'main()'-function
+// must be called from user program periodically (the often - the better)
+// handles network, TCP/IP-stack and user events
+
+void DoNetworkStuff(void)
+{
+// CodeRed - comment out original cs8900 code
+/*
+ unsigned int ActRxEvent; // copy of cs8900's RxEvent-Register
+
+ Write8900(ADD_PORT, PP_RxEvent); // point to RxEvent
+ ActRxEvent = Read8900(DATA_PORT); // read, implied skip the last frame
+
+ if (ActRxEvent & RX_OK)
+ {
+ if (ActRxEvent & RX_IA) ProcessEthIAFrame();
+ if (ActRxEvent & RX_BROADCAST) ProcessEthBroadcastFrame();
+ }
+*/
+
+ // Check to see if packet received
+ if (CheckIfFrameReceived())
+ {
+ // Was it a broadcast message?
+ if (BroadcastMessage()) {
+ ProcessEthBroadcastFrame();
+ }
+ else {
+ ProcessEthIAFrame();
+ }
+ // now release ethernet controller buffer
+ StopReadingFrame();
+ }
+
+
+// CodeRed - now back to original code
+
+ if (TCPFlags & TCP_TIMER_RUNNING)
+ if (TCPFlags & TIMER_TYPE_RETRY)
+ {
+ if (TCPTimer > RETRY_TIMEOUT)
+ {
+ TCPRestartTimer(); // set a new timeout
+
+ if (RetryCounter)
+ {
+ TCPHandleRetransmission(); // resend last frame
+ RetryCounter--;
+ }
+ else
+ {
+ TCPStopTimer();
+ TCPHandleTimeout();
+ }
+ }
+ }
+ else if (TCPTimer > FIN_TIMEOUT)
+ {
+ TCPStateMachine = CLOSED;
+ TCPFlags = 0; // reset all flags, stop retransmission...
+ SocketStatus &= SOCK_DATA_AVAILABLE; // clear all flags but data available
+ }
+
+ switch (TCPStateMachine)
+ {
+ case CLOSED :
+ case LISTENING :
+ {
+ if (TCPFlags & TCP_ACTIVE_OPEN) // stack has to open a connection?
+ if (TCPFlags & IP_ADDR_RESOLVED) // IP resolved?
+ if (!(TransmitControl & SEND_FRAME2)) // buffer free?
+ {
+// CodeRed - change TAR -> TOTC to use LPC1768 clock
+// TCPSeqNr = ((unsigned long)ISNGenHigh << 16) | TAR; // set local ISN
+ TCPSeqNr = ((unsigned long)ISNGenHigh << 16) | (LPC_TIM0->TC & 0xFFFF); // set local ISN
+ TCPUNASeqNr = TCPSeqNr;
+ TCPAckNr = 0; // we don't know what to ACK!
+ TCPUNASeqNr++; // count SYN as a byte
+ PrepareTCP_FRAME(TCP_CODE_SYN); // send SYN frame
+ LastFrameSent = TCP_SYN_FRAME;
+ TCPStartRetryTimer(); // we NEED a retry-timeout
+ TCPStateMachine = SYN_SENT;
+ }
+ break;
+ }
+ case SYN_RECD :
+ case ESTABLISHED :
+ {
+ if (TCPFlags & TCP_CLOSE_REQUESTED) // user has user initated a close?
+ if (!(TransmitControl & (SEND_FRAME2 | SEND_FRAME1))) // buffers free?
+ if (TCPSeqNr == TCPUNASeqNr) // all data ACKed?
+ {
+ TCPUNASeqNr++;
+ PrepareTCP_FRAME(TCP_CODE_FIN | TCP_CODE_ACK);
+ LastFrameSent = TCP_FIN_FRAME;
+ TCPStartRetryTimer();
+ TCPStateMachine = FIN_WAIT_1;
+ }
+ break;
+ }
+ case CLOSE_WAIT :
+ {
+ if (!(TransmitControl & (SEND_FRAME2 | SEND_FRAME1))) // buffers free?
+ if (TCPSeqNr == TCPUNASeqNr) // all data ACKed?
+ {
+ TCPUNASeqNr++; // count FIN as a byte
+ PrepareTCP_FRAME(TCP_CODE_FIN | TCP_CODE_ACK); // we NEED a retry-timeout
+ LastFrameSent = TCP_FIN_FRAME; // time to say goodbye...
+ TCPStartRetryTimer();
+ TCPStateMachine = LAST_ACK;
+ }
+ break;
+ }
+ }
+
+ if (TransmitControl & SEND_FRAME2)
+ {
+ RequestSend(TxFrame2Size);
+
+ if (Rdy4Tx()) // NOTE: when using a very fast MCU, maybe
+ SendFrame2(); // the CS8900 isn't ready yet, include
+ else { // a kind of timer or counter here
+ TCPStateMachine = CLOSED;
+ SocketStatus = SOCK_ERR_ETHERNET; // indicate an error to user
+ TCPFlags = 0; // clear all flags, stop timers etc.
+ }
+
+ TransmitControl &= ~SEND_FRAME2; // clear tx-flag
+ }
+
+ if (TransmitControl & SEND_FRAME1)
+ {
+ PrepareTCP_DATA_FRAME(); // build frame w/ actual SEQ, ACK....
+ RequestSend(TxFrame1Size);
+
+ if (Rdy4Tx()) // CS8900 ready to accept our frame?
+ SendFrame1(); // (see note above)
+ else {
+ TCPStateMachine = CLOSED;
+ SocketStatus = SOCK_ERR_ETHERNET; // indicate an error to user
+ TCPFlags = 0; // clear all flags, stop timers etc.
+ }
+
+ TransmitControl &= ~SEND_FRAME1; // clear tx-flag
+ }
+}
+
+// easyWEB internal function
+// handles an incoming broadcast frame
+
+void ProcessEthBroadcastFrame(void)
+{
+// CodeRed - change from int to short
+// unsigned int TargetIP[2];
+ unsigned short TargetIP[2];
+
+// CodeRed - remove CS8900 specific code block
+/*
+ // next two words MUST be read with High-Byte 1st (CS8900 AN181 Page 2)
+ ReadHB1ST8900(RX_FRAME_PORT); // ignore RxStatus Word
+ RecdFrameLength = ReadHB1ST8900(RX_FRAME_PORT);// get real length of frame
+
+ DummyReadFrame8900(6); // ignore DA (FF-FF-FF-FF-FF-FF)
+ CopyFromFrame8900(&RecdFrameMAC, 6); // store SA (for our answer)
+// Code Red - end of CS8900 specific block
+*/
+
+ if (ReadFrameBE_EthMAC() == FRAME_ARP) // get frame type, check for ARP
+ if (ReadFrameBE_EthMAC() == HARDW_ETH10) // Ethernet frame
+ if (ReadFrameBE_EthMAC() == FRAME_IP) // check protocol
+ if (ReadFrameBE_EthMAC() == IP_HLEN_PLEN) // check HLEN, PLEN
+ if (ReadFrameBE_EthMAC() == OP_ARP_REQUEST)
+ {
+ DummyReadFrame_EthMAC(6); // ignore sender's hardware address
+ CopyFromFrame_EthMAC(&RecdFrameIP, 4); // read sender's protocol address
+ DummyReadFrame_EthMAC(6); // ignore target's hardware address
+ CopyFromFrame_EthMAC(&TargetIP, 4); // read target's protocol address
+ if (!memcmp(&MyIP, &TargetIP, 4)) // is it for us?
+ PrepareARP_ANSWER(); // yes->create ARP_ANSWER frame
+ }
+}
+
+// easyWEB internal function
+// handles an incoming frame that passed CS8900's address filter
+// (individual addressed = IA)
+
+void ProcessEthIAFrame(void)
+{
+// CodeRed - change from int to short
+//unsigned int TargetIP[2];
+ unsigned short TargetIP[2];
+ unsigned char ProtocolType;
+// CodeRed - next few lines not needed for LPC1768 port
+/*
+ // next two words MUST be read with High-Byte 1st (CS8900 AN181 Page 2)
+ ReadHB1ST_EthMAC(RX_FRAME_PORT); // ignore RxStatus Word
+ RecdFrameLength = ReadHB1ST_EthMAC(RX_FRAME_PORT);// get real length of frame
+
+ DummyReadFrame_EthMAC(6); // ignore DA
+ CopyFromFrame_EthMAC(&RecdFrameMAC, 6); // store SA (for our answer)
+*/
+ switch (ReadFrameBE_EthMAC()) // get frame type
+ {
+ case FRAME_ARP : // check for ARP
+ {
+ if ((TCPFlags & (TCP_ACTIVE_OPEN | IP_ADDR_RESOLVED)) == TCP_ACTIVE_OPEN)
+ if (ReadFrameBE_EthMAC() == HARDW_ETH10) // check for the right prot. etc.
+ if (ReadFrameBE_EthMAC() == FRAME_IP)
+ if (ReadFrameBE_EthMAC() == IP_HLEN_PLEN)
+ if (ReadFrameBE_EthMAC() == OP_ARP_ANSWER)
+ {
+ TCPStopTimer(); // OK, now we've the MAC we wanted ;-)
+ CopyFromFrame_EthMAC(&RemoteMAC, 6); // extract opponents MAC
+ TCPFlags |= IP_ADDR_RESOLVED;
+ }
+ break;
+ }
+ case FRAME_IP : // check for IP-type
+ {
+ if ((ReadFrameBE_EthMAC() & 0xFF00 ) == IP_VER_IHL) // IPv4, IHL=5 (20 Bytes Header)
+ { // ignore Type Of Service
+ RecdIPFrameLength = ReadFrameBE_EthMAC(); // get IP frame's length
+ ReadFrameBE_EthMAC(); // ignore identification
+
+ if (!(ReadFrameBE_EthMAC() & (IP_FLAG_MOREFRAG | IP_FRAGOFS_MASK))) // only unfragm. frames
+ {
+// CodeRed - add mask
+// ProtocolType = ReadFrameBE_EthMAC() ; // get protocol, ignore TTL
+ ProtocolType = ReadFrameBE_EthMAC() & 0xFF ; // get protocol, ignore TTL
+ ReadFrameBE_EthMAC(); // ignore checksum
+ CopyFromFrame_EthMAC(&RecdFrameIP, 4); // get source IP
+ CopyFromFrame_EthMAC(&TargetIP, 4); // get destination IP
+
+ if (!memcmp(&MyIP, &TargetIP, 4)) // is it for us?
+ switch (ProtocolType) {
+ case PROT_ICMP : { ProcessICMPFrame(); break; }
+ case PROT_TCP : { ProcessTCPFrame(); break; }
+ case PROT_UDP : break; // not implemented!
+ }
+ }
+ }
+ break;
+ }
+ }
+}
+
+// easyWEB internal function
+// we've just rec'd an ICMP-frame (Internet Control Message Protocol)
+// check what to do and branch to the appropriate sub-function
+
+void ProcessICMPFrame(void)
+{
+// CodeRed - change from int to short
+//unsigned int ICMPTypeAndCode;
+ unsigned short ICMPTypeAndCode;
+
+ ICMPTypeAndCode = ReadFrameBE_EthMAC(); // get Message Type and Code
+ ReadFrameBE_EthMAC(); // ignore ICMP checksum
+
+ switch (ICMPTypeAndCode >> 8) { // check type
+ case ICMP_ECHO : // is echo request?
+ {
+ PrepareICMP_ECHO_REPLY(); // echo as much as we can...
+ break;
+ }
+ }
+}
+
+// easyWEB internal function
+// we've just rec'd an TCP-frame (Transmission Control Protocol)
+// this function mainly implements the TCP state machine according to RFC793
+
+void ProcessTCPFrame(void)
+{
+// CodeRed - change from int to short
+/* unsigned int TCPSegSourcePort; // segment's source port
+ unsigned int TCPSegDestPort; // segment's destination port
+ unsigned long TCPSegSeq; // segment's sequence number
+ unsigned long TCPSegAck; // segment's acknowledge number
+ unsigned int TCPCode; // TCP code and header length
+ unsigned char TCPHeaderSize; // real TCP header length
+ unsigned int NrOfDataBytes; // real number of data
+*/
+ unsigned short TCPSegSourcePort; // segment's source port
+ unsigned short TCPSegDestPort; // segment's destination port
+ unsigned long TCPSegSeq; // segment's sequence number
+ unsigned long TCPSegAck; // segment's acknowledge number
+ unsigned short TCPCode; // TCP code and header length
+ unsigned char TCPHeaderSize; // real TCP header length
+ unsigned short NrOfDataBytes; // real number of data
+
+
+ TCPSegSourcePort = ReadFrameBE_EthMAC(); // get ports
+ TCPSegDestPort = ReadFrameBE_EthMAC();
+
+ if (TCPSegDestPort != TCPLocalPort) return; // drop segment if port doesn't match
+
+ TCPSegSeq = (unsigned long)ReadFrameBE_EthMAC() << 16; // get segment sequence nr.
+ TCPSegSeq |= ReadFrameBE_EthMAC();
+
+ TCPSegAck = (unsigned long)ReadFrameBE_EthMAC() << 16; // get segment acknowledge nr.
+ TCPSegAck |= ReadFrameBE_EthMAC();
+
+ TCPCode = ReadFrameBE_EthMAC(); // get control bits, header length...
+
+ TCPHeaderSize = (TCPCode & DATA_OFS_MASK) >> 10; // header length in bytes
+ NrOfDataBytes = RecdIPFrameLength - IP_HEADER_SIZE - TCPHeaderSize; // seg. text length
+
+ if (NrOfDataBytes > MAX_TCP_RX_DATA_SIZE) return; // packet too large for us :...-(
+
+ if (TCPHeaderSize > TCP_HEADER_SIZE) // ignore options if any
+ DummyReadFrame_EthMAC(TCPHeaderSize - TCP_HEADER_SIZE);
+
+ switch (TCPStateMachine) // implement the TCP state machine
+ {
+ case CLOSED :
+ {
+ if (!(TCPCode & TCP_CODE_RST))
+ {
+ TCPRemotePort = TCPSegSourcePort;
+ memcpy(&RemoteMAC, &RecdFrameMAC, 6); // save opponents MAC and IP
+ memcpy(&RemoteIP, &RecdFrameIP, 4); // for later use
+
+ if (TCPCode & TCP_CODE_ACK) // make the reset sequence
+ { // acceptable to the other
+ TCPSeqNr = TCPSegAck; // TCP
+ PrepareTCP_FRAME(TCP_CODE_RST);
+ }
+ else
+ {
+ TCPSeqNr = 0;
+ TCPAckNr = TCPSegSeq + NrOfDataBytes;
+ if (TCPCode & (TCP_CODE_SYN | TCP_CODE_FIN)) TCPAckNr++;
+ PrepareTCP_FRAME(TCP_CODE_RST | TCP_CODE_ACK);
+ }
+ }
+ break;
+ }
+ case LISTENING :
+ {
+ if (!(TCPCode & TCP_CODE_RST)) // ignore segment containing RST
+ {
+ TCPRemotePort = TCPSegSourcePort;
+ memcpy(&RemoteMAC, &RecdFrameMAC, 6); // save opponents MAC and IP
+ memcpy(&RemoteIP, &RecdFrameIP, 4); // for later use
+
+ if (TCPCode & TCP_CODE_ACK) // reset a bad
+ { // acknowledgement
+ TCPSeqNr = TCPSegAck;
+ PrepareTCP_FRAME(TCP_CODE_RST);
+ }
+ else if (TCPCode & TCP_CODE_SYN)
+ {
+ TCPAckNr = TCPSegSeq + 1; // get remote ISN, next byte we expect
+// CodeRed - change TAR -> TOTC to use LPC1768 clock
+// TCPSeqNr = ((unsigned long)ISNGenHigh << 16) | TAR; // set local ISN
+ TCPSeqNr = ((unsigned long)ISNGenHigh << 16) | (LPC_TIM0->TC & 0xFFFF); // set local ISN
+ TCPUNASeqNr = TCPSeqNr + 1; // one byte out -> increase by one
+ PrepareTCP_FRAME(TCP_CODE_SYN | TCP_CODE_ACK);
+ LastFrameSent = TCP_SYN_ACK_FRAME;
+ TCPStartRetryTimer();
+ TCPStateMachine = SYN_RECD;
+ }
+ }
+ break;
+ }
+ case SYN_SENT :
+ {
+ if (memcmp(&RemoteIP, &RecdFrameIP, 4)) break; // drop segment if its IP doesn't belong
+ // to current session
+
+ if (TCPSegSourcePort != TCPRemotePort) break; // drop segment if port doesn't match
+
+ if (TCPCode & TCP_CODE_ACK) // ACK field significant?
+ if (TCPSegAck != TCPUNASeqNr) // is our ISN ACKed?
+ {
+ if (!(TCPCode & TCP_CODE_RST))
+ {
+ TCPSeqNr = TCPSegAck;
+ PrepareTCP_FRAME(TCP_CODE_RST);
+ }
+ break; // drop segment
+ }
+
+ if (TCPCode & TCP_CODE_RST) // RST??
+ {
+ if (TCPCode & TCP_CODE_ACK) // if ACK was acceptable, reset
+ { // connection
+ TCPStateMachine = CLOSED;
+ TCPFlags = 0; // reset all flags, stop retransmission...
+ SocketStatus = SOCK_ERR_CONN_RESET;
+ }
+ break; // drop segment
+ }
+
+ if (TCPCode & TCP_CODE_SYN) // SYN??
+ {
+ TCPAckNr = TCPSegSeq; // get opponents ISN
+ TCPAckNr++; // inc. by one...
+
+ if (TCPCode & TCP_CODE_ACK)
+ {
+ TCPStopTimer(); // stop retransmission, other TCP got our SYN
+ TCPSeqNr = TCPUNASeqNr; // advance our sequence number
+
+ PrepareTCP_FRAME(TCP_CODE_ACK); // ACK this ISN
+ TCPStateMachine = ESTABLISHED;
+ SocketStatus |= SOCK_CONNECTED;
+ SocketStatus |= SOCK_TX_BUF_RELEASED; // user may send data now :-)
+ }
+ else
+ {
+ TCPStopTimer();
+ PrepareTCP_FRAME(TCP_CODE_SYN | TCP_CODE_ACK); // our SYN isn't ACKed yet,
+ LastFrameSent = TCP_SYN_ACK_FRAME; // now continue with sending
+ TCPStartRetryTimer(); // SYN_ACK frames
+ TCPStateMachine = SYN_RECD;
+ }
+ }
+ break;
+ }
+ default :
+ {
+ if (memcmp(&RemoteIP, &RecdFrameIP, 4)) break; // drop segment if IP doesn't belong
+ // to current session
+
+ if (TCPSegSourcePort != TCPRemotePort) break; // drop segment if port doesn't match
+
+ if (TCPSegSeq != TCPAckNr) break; // drop if it's not the segment we expect
+
+ if (TCPCode & TCP_CODE_RST) // RST??
+ {
+ TCPStateMachine = CLOSED; // close the state machine
+ TCPFlags = 0; // reset all flags, stop retransmission...
+ SocketStatus = SOCK_ERR_CONN_RESET; // indicate an error to user
+ break;
+ }
+
+ if (TCPCode & TCP_CODE_SYN) // SYN??
+ {
+ PrepareTCP_FRAME(TCP_CODE_RST); // is NOT allowed here! send a reset,
+ TCPStateMachine = CLOSED; // close connection...
+ TCPFlags = 0; // reset all flags, stop retransmission...
+ SocketStatus = SOCK_ERR_REMOTE; // fatal error!
+ break; // ...and drop the frame
+ }
+
+ if (!(TCPCode & TCP_CODE_ACK)) break; // drop segment if the ACK bit is off
+
+ if (TCPSegAck == TCPUNASeqNr) // is our last data sent ACKed?
+ {
+ TCPStopTimer(); // stop retransmission
+ TCPSeqNr = TCPUNASeqNr; // advance our sequence number
+
+ switch (TCPStateMachine) // change state if necessary
+ {
+ case SYN_RECD : // ACK of our SYN?
+ {
+ TCPStateMachine = ESTABLISHED; // user may send data now :-)
+ SocketStatus |= SOCK_CONNECTED;
+ break;
+ }
+ case FIN_WAIT_1 : { TCPStateMachine = FIN_WAIT_2; break; } // ACK of our FIN?
+ case CLOSING : { TCPStateMachine = TIME_WAIT; break; } // ACK of our FIN?
+ case LAST_ACK : // ACK of our FIN?
+ {
+ TCPStateMachine = CLOSED;
+ TCPFlags = 0; // reset all flags, stop retransmission...
+ SocketStatus &= SOCK_DATA_AVAILABLE; // clear all flags but data available
+ break;
+ }
+ case TIME_WAIT :
+ {
+ PrepareTCP_FRAME(TCP_CODE_ACK); // ACK a retransmission of remote FIN
+ TCPRestartTimer(); // restart TIME_WAIT timeout
+ break;
+ }
+ }
+
+ if (TCPStateMachine == ESTABLISHED) // if true, give the frame buffer back
+ SocketStatus |= SOCK_TX_BUF_RELEASED; // to user
+ }
+
+ if ((TCPStateMachine == ESTABLISHED) || (TCPStateMachine == FIN_WAIT_1) || (TCPStateMachine == FIN_WAIT_2))
+ if (NrOfDataBytes) // data available?
+ if (!(SocketStatus & SOCK_DATA_AVAILABLE)) // rx data-buffer empty?
+ {
+ DummyReadFrame_EthMAC(6); // ignore window, checksum, urgent pointer
+// CodeRed - removed unrequired &
+// CopyFromFrame_EthMAC(&RxTCPBuffer, NrOfDataBytes);// fetch data and
+ CopyFromFrame_EthMAC(RxTCPBuffer, NrOfDataBytes);// fetch data and
+
+ TCPRxDataCount = NrOfDataBytes; // ...tell the user...
+ SocketStatus |= SOCK_DATA_AVAILABLE; // indicate the new data to user
+ TCPAckNr += NrOfDataBytes;
+ PrepareTCP_FRAME(TCP_CODE_ACK); // ACK rec'd data
+ }
+
+ if (TCPCode & TCP_CODE_FIN) // FIN??
+ {
+ switch (TCPStateMachine)
+ {
+ case SYN_RECD :
+ case ESTABLISHED :
+ {
+ TCPStateMachine = CLOSE_WAIT;
+ break;
+ }
+ case FIN_WAIT_1 :
+ { // if our FIN was ACKed, we automatically
+ TCPStateMachine = CLOSING; // enter FIN_WAIT_2 (look above) and therefore
+ SocketStatus &= ~SOCK_CONNECTED; // TIME_WAIT
+ break;
+ }
+ case FIN_WAIT_2 :
+ {
+ TCPStartTimeWaitTimer();
+ TCPStateMachine = TIME_WAIT;
+ SocketStatus &= ~SOCK_CONNECTED;
+ break;
+ }
+ case TIME_WAIT :
+ {
+ TCPRestartTimer();
+ break;
+ }
+ }
+ TCPAckNr++; // ACK remote's FIN flag
+ PrepareTCP_FRAME(TCP_CODE_ACK);
+ }
+ }
+ }
+}
+
+// easyWEB internal function
+// prepares the TxFrame2-buffer to send an ARP-request
+
+void PrepareARP_REQUEST(void)
+{
+ // Ethernet
+
+// CodeRed - added char cast
+// memset(&TxFrame2[ETH_DA_OFS], 0xFF, 6);
+ memset(&TxFrame2[ETH_DA_OFS], (char)0xFF, 6); // we don't know opposites MAC!
+ memcpy(&TxFrame2[ETH_SA_OFS], &MyMAC, 6);
+// Code Red - int-> short
+// *(unsigned int *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_ARP);
+ *(unsigned short *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_ARP);
+
+ // ARP
+
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame2[ARP_HARDW_OFS] = SWAPB(HARDW_ETH10);
+ *(unsigned int *)&TxFrame2[ARP_PROT_OFS] = SWAPB(FRAME_IP);
+ *(unsigned int *)&TxFrame2[ARP_HLEN_PLEN_OFS] = SWAPB(IP_HLEN_PLEN);
+ *(unsigned int *)&TxFrame2[ARP_OPCODE_OFS] = SWAPB(OP_ARP_REQUEST);
+*/
+ *(unsigned short *)&TxFrame2[ARP_HARDW_OFS] = SWAPB(HARDW_ETH10);
+ *(unsigned short *)&TxFrame2[ARP_PROT_OFS] = SWAPB(FRAME_IP);
+ *(unsigned short *)&TxFrame2[ARP_HLEN_PLEN_OFS] = SWAPB(IP_HLEN_PLEN);
+ *(unsigned short *)&TxFrame2[ARP_OPCODE_OFS] = SWAPB(OP_ARP_REQUEST);
+
+ memcpy(&TxFrame2[ARP_SENDER_HA_OFS], &MyMAC, 6);
+ memcpy(&TxFrame2[ARP_SENDER_IP_OFS], &MyIP, 4);
+ memset(&TxFrame2[ARP_TARGET_HA_OFS], 0x00, 6); // we don't know opposites MAC!
+
+ if (((RemoteIP[0] ^ MyIP[0]) & SubnetMask[0]) || ((RemoteIP[1] ^ MyIP[1]) & SubnetMask[1]))
+ memcpy(&TxFrame2[ARP_TARGET_IP_OFS], &GatewayIP, 4); // IP not in subnet, use gateway
+ else
+ memcpy(&TxFrame2[ARP_TARGET_IP_OFS], &RemoteIP, 4); // other IP is next to us...
+
+ TxFrame2Size = ETH_HEADER_SIZE + ARP_FRAME_SIZE;
+ TransmitControl |= SEND_FRAME2;
+}
+
+// easyWEB internal function
+// prepares the TxFrame2-buffer to send an ARP-answer (reply)
+
+void PrepareARP_ANSWER(void)
+{
+ // Ethernet
+ memcpy(&TxFrame2[ETH_DA_OFS], &RecdFrameMAC, 6);
+ memcpy(&TxFrame2[ETH_SA_OFS], &MyMAC, 6);
+// CodeRed - int-> short
+// *(unsigned int *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_ARP);
+ *(unsigned short *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_ARP);
+
+ // ARP
+
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame2[ARP_HARDW_OFS] = SWAPB(HARDW_ETH10);
+ *(unsigned int *)&TxFrame2[ARP_PROT_OFS] = SWAPB(FRAME_IP);
+ *(unsigned int *)&TxFrame2[ARP_HLEN_PLEN_OFS] = SWAPB(IP_HLEN_PLEN);
+ *(unsigned int *)&TxFrame2[ARP_OPCODE_OFS] = SWAPB(OP_ARP_ANSWER);
+*/
+ *(unsigned short *)&TxFrame2[ARP_HARDW_OFS] = SWAPB(HARDW_ETH10);
+ *(unsigned short *)&TxFrame2[ARP_PROT_OFS] = SWAPB(FRAME_IP);
+ *(unsigned short *)&TxFrame2[ARP_HLEN_PLEN_OFS] = SWAPB(IP_HLEN_PLEN);
+ *(unsigned short *)&TxFrame2[ARP_OPCODE_OFS] = SWAPB(OP_ARP_ANSWER);
+ memcpy(&TxFrame2[ARP_SENDER_HA_OFS], &MyMAC, 6);
+ memcpy(&TxFrame2[ARP_SENDER_IP_OFS], &MyIP, 4);
+ memcpy(&TxFrame2[ARP_TARGET_HA_OFS], &RecdFrameMAC, 6);
+ memcpy(&TxFrame2[ARP_TARGET_IP_OFS], &RecdFrameIP, 4);
+
+ TxFrame2Size = ETH_HEADER_SIZE + ARP_FRAME_SIZE;
+ TransmitControl |= SEND_FRAME2;
+}
+
+// easyWEB internal function
+// prepares the TxFrame2-buffer to send an ICMP-echo-reply
+
+void PrepareICMP_ECHO_REPLY(void)
+{
+// CodeRed - int-> short
+// unsigned int ICMPDataCount;
+ unsigned short ICMPDataCount;
+
+ if (RecdIPFrameLength > MAX_ETH_TX_DATA_SIZE) // don't overload TX-buffer
+ ICMPDataCount = MAX_ETH_TX_DATA_SIZE - IP_HEADER_SIZE - ICMP_HEADER_SIZE;
+ else
+ ICMPDataCount = RecdIPFrameLength - IP_HEADER_SIZE - ICMP_HEADER_SIZE;
+
+ // Ethernet
+ memcpy(&TxFrame2[ETH_DA_OFS], &RecdFrameMAC, 6);
+ memcpy(&TxFrame2[ETH_SA_OFS], &MyMAC, 6);
+
+// CodeRed - int-> short
+// *(unsigned int *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_IP);
+ *(unsigned short *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_IP);
+
+ // IP
+
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame2[IP_VER_IHL_TOS_OFS] = SWAPB(IP_VER_IHL);
+ WriteWBE(&TxFrame2[IP_TOTAL_LENGTH_OFS], IP_HEADER_SIZE + ICMP_HEADER_SIZE + ICMPDataCount);
+ *(unsigned int *)&TxFrame2[IP_IDENT_OFS] = 0;
+ *(unsigned int *)&TxFrame2[IP_FLAGS_FRAG_OFS] = 0;
+ *(unsigned int *)&TxFrame2[IP_TTL_PROT_OFS] = SWAPB((DEFAULT_TTL << 8) | PROT_ICMP);
+ *(unsigned int *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = 0;
+ memcpy(&TxFrame2[IP_SOURCE_OFS], &MyIP, 4);
+ memcpy(&TxFrame2[IP_DESTINATION_OFS], &RecdFrameIP, 4);
+ *(unsigned int *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_VER_IHL_TOS_OFS], IP_HEADER_SIZE, 0);
+*/
+ *(unsigned short *)&TxFrame2[IP_VER_IHL_TOS_OFS] = SWAPB(IP_VER_IHL);
+ WriteWBE(&TxFrame2[IP_TOTAL_LENGTH_OFS], IP_HEADER_SIZE + ICMP_HEADER_SIZE + ICMPDataCount);
+ *(unsigned short *)&TxFrame2[IP_IDENT_OFS] = 0;
+ *(unsigned short *)&TxFrame2[IP_FLAGS_FRAG_OFS] = 0;
+ *(unsigned short *)&TxFrame2[IP_TTL_PROT_OFS] = SWAPB((DEFAULT_TTL << 8) | PROT_ICMP);
+ *(unsigned short *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = 0;
+ memcpy(&TxFrame2[IP_SOURCE_OFS], &MyIP, 4);
+ memcpy(&TxFrame2[IP_DESTINATION_OFS], &RecdFrameIP, 4);
+ *(unsigned short *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_VER_IHL_TOS_OFS], IP_HEADER_SIZE, 0);
+
+ // ICMP
+
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame2[ICMP_TYPE_CODE_OFS] = SWAPB(ICMP_ECHO_REPLY << 8);
+ *(unsigned int *)&TxFrame2[ICMP_CHKSUM_OFS] = 0; // initialize checksum field
+
+ CopyFromFrame8900(&TxFrame2[ICMP_DATA_OFS], ICMPDataCount); // get data to echo...
+ *(unsigned int *)&TxFrame2[ICMP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_DATA_OFS], ICMPDataCount + ICMP_HEADER_SIZE, 0);
+*/
+ *(unsigned short *)&TxFrame2[ICMP_TYPE_CODE_OFS] = SWAPB(ICMP_ECHO_REPLY << 8);
+ *(unsigned short *)&TxFrame2[ICMP_CHKSUM_OFS] = 0; // initialize checksum field
+
+ CopyFromFrame_EthMAC(&TxFrame2[ICMP_DATA_OFS], ICMPDataCount); // get data to echo...
+ *(unsigned short *)&TxFrame2[ICMP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_DATA_OFS], ICMPDataCount + ICMP_HEADER_SIZE, 0);
+
+
+ // ICMP
+
+// Code Red - int-> short
+ /* *(unsigned int *)&TxFrame2[ICMP_TYPE_CODE_OFS] = SWAPB(ICMP_ECHO_REPLY << 8);
+ *(unsigned int *)&TxFrame2[ICMP_CHKSUM_OFS] = 0; // initialize checksum field
+
+ CopyFromFrame8900(&TxFrame2[ICMP_DATA_OFS], ICMPDataCount); // get data to echo...
+ *(unsigned int *)&TxFrame2[ICMP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_DATA_OFS], ICMPDataCount + ICMP_HEADER_SIZE, 0);
+*/
+ *(unsigned short *)&TxFrame2[ICMP_TYPE_CODE_OFS] = SWAPB(ICMP_ECHO_REPLY << 8);
+ *(unsigned short *)&TxFrame2[ICMP_CHKSUM_OFS] = 0; // initialize checksum field
+
+ CopyFromFrame_EthMAC(&TxFrame2[ICMP_DATA_OFS], ICMPDataCount); // get data to echo...
+ *(unsigned short *)&TxFrame2[ICMP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_DATA_OFS], ICMPDataCount + ICMP_HEADER_SIZE, 0);
+
+
+ TxFrame2Size = ETH_HEADER_SIZE + IP_HEADER_SIZE + ICMP_HEADER_SIZE + ICMPDataCount;
+ TransmitControl |= SEND_FRAME2;
+}
+
+// easyWEB internal function
+// prepares the TxFrame2-buffer to send a general TCP frame
+// the TCPCode-field is passed as an argument
+
+// CodeRed - int-> short
+//void PrepareTCP_FRAME(unsigned int TCPCode)
+void PrepareTCP_FRAME(unsigned short TCPCode)
+{
+ // Ethernet
+ memcpy(&TxFrame2[ETH_DA_OFS], &RemoteMAC, 6);
+ memcpy(&TxFrame2[ETH_SA_OFS], &MyMAC, 6);
+
+// CodeRed - int-> short
+// *(unsigned int *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_IP);
+ *(unsigned short *)&TxFrame2[ETH_TYPE_OFS] = SWAPB(FRAME_IP);
+
+ // IP
+
+// Code Red - int-> short
+/* *(unsigned int *)&TxFrame2[IP_VER_IHL_TOS_OFS] = SWAPB(IP_VER_IHL | IP_TOS_D);
+
+ if (TCPCode & TCP_CODE_SYN) // if SYN, we want to use the MSS option
+ *(unsigned int *)&TxFrame2[IP_TOTAL_LENGTH_OFS] = SWAPB(IP_HEADER_SIZE + TCP_HEADER_SIZE + TCP_OPT_MSS_SIZE);
+ else
+ *(unsigned int *)&TxFrame2[IP_TOTAL_LENGTH_OFS] = SWAPB(IP_HEADER_SIZE + TCP_HEADER_SIZE);
+
+ *(unsigned int *)&TxFrame2[IP_IDENT_OFS] = 0;
+ *(unsigned int *)&TxFrame2[IP_FLAGS_FRAG_OFS] = 0;
+ *(unsigned int *)&TxFrame2[IP_TTL_PROT_OFS] = SWAPB((DEFAULT_TTL << 8) | PROT_TCP);
+ *(unsigned int *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = 0;
+ memcpy(&TxFrame2[IP_SOURCE_OFS], &MyIP, 4);
+ memcpy(&TxFrame2[IP_DESTINATION_OFS], &RemoteIP, 4);
+ *(unsigned int *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_VER_IHL_TOS_OFS], IP_HEADER_SIZE, 0);
+*/
+ *(unsigned short *)&TxFrame2[IP_VER_IHL_TOS_OFS] = SWAPB(IP_VER_IHL | IP_TOS_D);
+
+ if (TCPCode & TCP_CODE_SYN) // if SYN, we want to use the MSS option
+ *(unsigned short *)&TxFrame2[IP_TOTAL_LENGTH_OFS] = SWAPB(IP_HEADER_SIZE + TCP_HEADER_SIZE + TCP_OPT_MSS_SIZE);
+ else
+ *(unsigned short *)&TxFrame2[IP_TOTAL_LENGTH_OFS] = SWAPB(IP_HEADER_SIZE + TCP_HEADER_SIZE);
+
+ *(unsigned short *)&TxFrame2[IP_IDENT_OFS] = 0;
+ *(unsigned short *)&TxFrame2[IP_FLAGS_FRAG_OFS] = 0;
+ *(unsigned short *)&TxFrame2[IP_TTL_PROT_OFS] = SWAPB((DEFAULT_TTL << 8) | PROT_TCP);
+ *(unsigned short *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = 0;
+ memcpy(&TxFrame2[IP_SOURCE_OFS], &MyIP, 4);
+ memcpy(&TxFrame2[IP_DESTINATION_OFS], &RemoteIP, 4);
+ *(unsigned short *)&TxFrame2[IP_HEAD_CHKSUM_OFS] = CalcChecksum(&TxFrame2[IP_VER_IHL_TOS_OFS], IP_HEADER_SIZE, 0);
+
+ // TCP
+ WriteWBE(&TxFrame2[TCP_SRCPORT_OFS], TCPLocalPort);
+ WriteWBE(&TxFrame2[TCP_DESTPORT_OFS], TCPRemotePort);
+
+ WriteDWBE(&TxFrame2[TCP_SEQNR_OFS], TCPSeqNr);
+ WriteDWBE(&TxFrame2[TCP_ACKNR_OFS], TCPAckNr);
+
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame2[TCP_WINDOW_OFS] = SWAPB(MAX_TCP_RX_DATA_SIZE); // data bytes to accept
+ *(unsigned int *)&TxFrame2[TCP_CHKSUM_OFS] = 0; // initalize checksum
+ *(unsigned int *)&TxFrame2[TCP_URGENT_OFS] = 0;
+
+ if (TCPCode & TCP_CODE_SYN) // if SYN, we want to use the MSS option
+ {
+ *(unsigned int *)&TxFrame2[TCP_DATA_CODE_OFS] = SWAPB(0x6000 | TCPCode); // TCP header length = 24
+ *(unsigned int *)&TxFrame2[TCP_DATA_OFS] = SWAPB(TCP_OPT_MSS); // MSS option
+ *(unsigned int *)&TxFrame2[TCP_DATA_OFS + 2] = SWAPB(MAX_TCP_RX_DATA_SIZE);// max. length of TCP-data we accept
+ *(unsigned int *)&TxFrame2[TCP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[TCP_SRCPORT_OFS], TCP_HEADER_SIZE + TCP_OPT_MSS_SIZE, 1);
+ TxFrame2Size = ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE + TCP_OPT_MSS_SIZE;
+ }
+ else
+ {
+ *(unsigned int *)&TxFrame2[TCP_DATA_CODE_OFS] = SWAPB(0x5000 | TCPCode); // TCP header length = 20
+ *(unsigned int *)&TxFrame2[TCP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[TCP_SRCPORT_OFS], TCP_HEADER_SIZE, 1);
+ TxFrame2Size = ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE;
+ }
+*/
+ *(unsigned short *)&TxFrame2[TCP_WINDOW_OFS] = SWAPB(MAX_TCP_RX_DATA_SIZE); // data bytes to accept
+ *(unsigned short *)&TxFrame2[TCP_CHKSUM_OFS] = 0; // initalize checksum
+ *(unsigned short *)&TxFrame2[TCP_URGENT_OFS] = 0;
+
+ if (TCPCode & TCP_CODE_SYN) // if SYN, we want to use the MSS option
+ {
+ *(unsigned short *)&TxFrame2[TCP_DATA_CODE_OFS] = SWAPB(0x6000 | TCPCode); // TCP header length = 24
+ *(unsigned short *)&TxFrame2[TCP_DATA_OFS] = SWAPB(TCP_OPT_MSS); // MSS option
+ *(unsigned short *)&TxFrame2[TCP_DATA_OFS + 2] = SWAPB(MAX_TCP_RX_DATA_SIZE);// max. length of TCP-data we accept
+ *(unsigned short *)&TxFrame2[TCP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[TCP_SRCPORT_OFS], TCP_HEADER_SIZE + TCP_OPT_MSS_SIZE, 1);
+ TxFrame2Size = ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE + TCP_OPT_MSS_SIZE;
+ }
+ else
+ {
+ *(unsigned short *)&TxFrame2[TCP_DATA_CODE_OFS] = SWAPB(0x5000 | TCPCode); // TCP header length = 20
+ *(unsigned short *)&TxFrame2[TCP_CHKSUM_OFS] = CalcChecksum(&TxFrame2[TCP_SRCPORT_OFS], TCP_HEADER_SIZE, 1);
+ TxFrame2Size = ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE;
+ }
+ TransmitControl |= SEND_FRAME2;
+}
+
+// easyWEB internal function
+// prepares the TxFrame1-buffer to send a payload-packet
+
+void PrepareTCP_DATA_FRAME(void)
+{
+ // Ethernet
+ memcpy(&TxFrame1[ETH_DA_OFS], &RemoteMAC, 6);
+ memcpy(&TxFrame1[ETH_SA_OFS], &MyMAC, 6);
+// Code Red - int-> short
+// *(unsigned int *)&TxFrame1[ETH_TYPE_OFS] = SWAPB(FRAME_IP);
+ *(unsigned short *)&TxFrame1[ETH_TYPE_OFS] = SWAPB(FRAME_IP);
+
+ // IP
+
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame1[IP_VER_IHL_TOS_OFS] = SWAPB(IP_VER_IHL | IP_TOS_D);
+ WriteWBE(&TxFrame1[IP_TOTAL_LENGTH_OFS], IP_HEADER_SIZE + TCP_HEADER_SIZE + TCPTxDataCount);
+ *(unsigned int *)&TxFrame1[IP_IDENT_OFS] = 0;
+ *(unsigned int *)&TxFrame1[IP_FLAGS_FRAG_OFS] = 0;
+ *(unsigned int *)&TxFrame1[IP_TTL_PROT_OFS] = SWAPB((DEFAULT_TTL << 8) | PROT_TCP);
+ *(unsigned int *)&TxFrame1[IP_HEAD_CHKSUM_OFS] = 0;
+ memcpy(&TxFrame1[IP_SOURCE_OFS], &MyIP, 4);
+ memcpy(&TxFrame1[IP_DESTINATION_OFS], &RemoteIP, 4);
+ *(unsigned int *)&TxFrame1[IP_HEAD_CHKSUM_OFS] = CalcChecksum(&TxFrame1[IP_VER_IHL_TOS_OFS], IP_HEADER_SIZE, 0);
+*/
+ *(unsigned short *)&TxFrame1[IP_VER_IHL_TOS_OFS] = SWAPB(IP_VER_IHL | IP_TOS_D);
+ WriteWBE(&TxFrame1[IP_TOTAL_LENGTH_OFS], IP_HEADER_SIZE + TCP_HEADER_SIZE + TCPTxDataCount);
+ *(unsigned short *)&TxFrame1[IP_IDENT_OFS] = 0;
+ *(unsigned short *)&TxFrame1[IP_FLAGS_FRAG_OFS] = 0;
+ *(unsigned short *)&TxFrame1[IP_TTL_PROT_OFS] = SWAPB((DEFAULT_TTL << 8) | PROT_TCP);
+ *(unsigned short *)&TxFrame1[IP_HEAD_CHKSUM_OFS] = 0;
+ memcpy(&TxFrame1[IP_SOURCE_OFS], &MyIP, 4);
+ memcpy(&TxFrame1[IP_DESTINATION_OFS], &RemoteIP, 4);
+ *(unsigned short *)&TxFrame1[IP_HEAD_CHKSUM_OFS] = CalcChecksum(&TxFrame1[IP_VER_IHL_TOS_OFS], IP_HEADER_SIZE, 0);
+
+
+ // TCP
+ WriteWBE(&TxFrame1[TCP_SRCPORT_OFS], TCPLocalPort);
+ WriteWBE(&TxFrame1[TCP_DESTPORT_OFS], TCPRemotePort);
+
+ WriteDWBE(&TxFrame1[TCP_SEQNR_OFS], TCPSeqNr);
+ WriteDWBE(&TxFrame1[TCP_ACKNR_OFS], TCPAckNr);
+// CodeRed - int-> short
+/* *(unsigned int *)&TxFrame1[TCP_DATA_CODE_OFS] = SWAPB(0x5000 | TCP_CODE_ACK); // TCP header length = 20
+ *(unsigned int *)&TxFrame1[TCP_WINDOW_OFS] = SWAPB(MAX_TCP_RX_DATA_SIZE); // data bytes to accept
+ *(unsigned int *)&TxFrame1[TCP_CHKSUM_OFS] = 0;
+ *(unsigned int *)&TxFrame1[TCP_URGENT_OFS] = 0;
+ *(unsigned int *)&TxFrame1[TCP_CHKSUM_OFS] = CalcChecksum(&TxFrame1[TCP_SRCPORT_OFS], TCP_HEADER_SIZE + TCPTxDataCount, 1);
+*/
+ *(unsigned short *)&TxFrame1[TCP_DATA_CODE_OFS] = SWAPB(0x5000 | TCP_CODE_ACK); // TCP header length = 20
+ *(unsigned short *)&TxFrame1[TCP_WINDOW_OFS] = SWAPB(MAX_TCP_RX_DATA_SIZE); // data bytes to accept
+ *(unsigned short *)&TxFrame1[TCP_CHKSUM_OFS] = 0;
+ *(unsigned short *)&TxFrame1[TCP_URGENT_OFS] = 0;
+ *(unsigned short *)&TxFrame1[TCP_CHKSUM_OFS] = CalcChecksum(&TxFrame1[TCP_SRCPORT_OFS], TCP_HEADER_SIZE + TCPTxDataCount, 1);
+
+}
+
+// easyWEB internal function
+// calculates the TCP/IP checksum. if 'IsTCP != 0', the TCP pseudo-header
+// will be included.
+
+// CodeRed - int-> short
+//unsigned int CalcChecksum(void *Start, unsigned int Count, unsigned char IsTCP)
+unsigned short CalcChecksum(void *Start, unsigned short Count, unsigned char IsTCP)
+{
+// Code Red - added pStart
+ unsigned short *pStart;
+ unsigned long Sum = 0;
+
+ if (IsTCP) { // if we've a TCP frame...
+ Sum += MyIP[0]; // ...include TCP pseudo-header
+ Sum += MyIP[1];
+ Sum += RemoteIP[0];
+ Sum += RemoteIP[1];
+ Sum += SwapBytes(Count); // TCP header length plus data length
+ Sum += SWAPB(PROT_TCP);
+ }
+
+// Code Red - modified to correct expression
+/* while (Count > 1) { // sum words
+ Sum += *((unsigned int *)Start)++;
+ Count -= 2;
+ }
+
+ if (Count) // add left-over byte, if any
+ Sum += *(unsigned char *)Start;
+*/
+
+ pStart = (unsigned short *)Start;
+ while (Count > 1) { // sum words
+ Sum += *pStart++;
+ Count -= 2;
+ }
+
+ if (Count) // add left-over byte, if any
+ Sum += *(unsigned char *)pStart;
+
+
+ while (Sum >> 16) // fold 32-bit sum to 16 bits
+ Sum = (Sum & 0xFFFF) + (Sum >> 16);
+
+ return ~Sum;
+}
+
+// easyWEB internal function
+// starts the timer as a retry-timer (used for retransmission-timeout)
+
+void TCPStartRetryTimer(void)
+{
+ TCPTimer = 0;
+ RetryCounter = MAX_RETRYS;
+ TCPFlags |= TCP_TIMER_RUNNING;
+ TCPFlags |= TIMER_TYPE_RETRY;
+}
+
+// easyWEB internal function
+// starts the timer as a 'TIME_WAIT'-timer (used to finish a TCP-session)
+
+void TCPStartTimeWaitTimer(void)
+{
+ TCPTimer = 0;
+ TCPFlags |= TCP_TIMER_RUNNING;
+ TCPFlags &= ~TIMER_TYPE_RETRY;
+}
+
+// easyWEB internal function
+// restarts the timer
+
+void TCPRestartTimer(void)
+{
+ TCPTimer = 0;
+}
+
+// easyWEB internal function
+// stopps the timer
+
+void TCPStopTimer(void)
+{
+ TCPFlags &= ~TCP_TIMER_RUNNING;
+}
+
+// easyWEB internal function
+// if a retransmission-timeout occured, check which packet
+// to resend.
+
+void TCPHandleRetransmission(void)
+{
+ switch (LastFrameSent)
+ {
+ case ARP_REQUEST : { PrepareARP_REQUEST(); break; }
+ case TCP_SYN_FRAME : { PrepareTCP_FRAME(TCP_CODE_SYN); break; }
+ case TCP_SYN_ACK_FRAME : { PrepareTCP_FRAME(TCP_CODE_SYN | TCP_CODE_ACK); break; }
+ case TCP_FIN_FRAME : { PrepareTCP_FRAME(TCP_CODE_FIN | TCP_CODE_ACK); break; }
+ case TCP_DATA_FRAME : { TransmitControl |= SEND_FRAME1; break; }
+ }
+}
+
+// easyWEB internal function
+// if all retransmissions failed, close connection and indicate an error
+
+void TCPHandleTimeout(void)
+{
+ TCPStateMachine = CLOSED;
+
+ if ((TCPFlags & (TCP_ACTIVE_OPEN | IP_ADDR_RESOLVED)) == TCP_ACTIVE_OPEN)
+ SocketStatus = SOCK_ERR_ARP_TIMEOUT; // indicate an error to user
+ else
+ SocketStatus = SOCK_ERR_TCP_TIMEOUT;
+
+ TCPFlags = 0; // clear all flags
+}
+
+
+// CodeRed - TCPClockHandler() replaced
+/*
+// easyWEB internal function
+// function executed every 0.262s by the MCU. used for the
+// inital sequence number generator (ISN) and the TCP-timer
+
+interrupt [TIMERA1_VECTOR] void TCPClockHandler(void)
+{
+ if (TAIV == 10) // check for timer overflow, reset int.-flag
+ {
+ ISNGenHigh++; // upper 16 bits of initial sequence number
+ TCPTimer++; // timer for retransmissions
+ }
+}
+*/
+
+// easyWEB internal function
+// function executed every 0.210s by the MCU. used for the
+// inital sequence number generator (ISN) and the TCP-timer
+
+void TCPClockHandler(void)
+{
+ ISNGenHigh++; // upper 16 bits of initial sequence number
+ TCPTimer++; // timer for retransmissions
+}
+
+
+// easyWEB internal function
+// transfers the contents of 'TxFrame1'-Buffer to the CS8900A
+
+void SendFrame1(void)
+{
+// CodeRed - updated for LPC1768 port
+// CopyToFrame8900(&TxFrame1, TxFrame1Size);
+ CopyToFrame_EthMAC(TxFrame1, TxFrame1Size);
+}
+
+// easyWEB internal function
+// transfers the contents of 'TxFrame2'-Buffer to the CS8900A
+
+void SendFrame2(void)
+{
+// CodeRed - updated for LPC1768 port
+// CopyToFrame8900(&TxFrame2, TxFrame2Size);
+ CopyToFrame_EthMAC(TxFrame2, TxFrame2Size);
+}
+
+// easyWEB internal function
+// help function to write a WORD in big-endian byte-order
+// to MCU-memory
+
+// CodeRed - int->short
+//void WriteWBE(unsigned char *Add, unsigned int Data)
+void WriteWBE(unsigned char *Add, unsigned short Data)
+{
+ *Add++ = Data >> 8;
+// Code Red - added cast
+// *Add = Data;
+ *Add = (char)Data;
+}
+
+// easyWEB internal function
+// help function to write a DWORD in big-endian byte-order
+// to MCU-memory
+
+void WriteDWBE(unsigned char *Add, unsigned long Data)
+{
+ *Add++ = Data >> 24;
+ *Add++ = Data >> 16;
+ *Add++ = Data >> 8;
+ *Add = Data;
+}
+
+// easyWEB internal function
+// help function to swap the byte order of a WORD
+
+// CodeRed - int->short
+//unsigned int SwapBytes(unsigned int Data)
+unsigned short SwapBytes(unsigned short Data)
+{
+ return (Data >> 8) | (Data << 8);
+}
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tcpip.h Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,260 @@
+/******************************************************************
+ ***** *****
+ ***** Name: tcpip.h *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** Func: header-file for tcpip.c *****
+ ***** *****
+ ******************************************************************/
+
+// Modifications by Code Red Technologies for NXP LPC1776
+
+#ifndef __TCPIP_H
+#define __TCPIP_H
+
+// easyWEB-stack definitions
+// Code Red - replaced original address by 192.168.0.200
+#define MYIP_1 192 // our internet protocol (IP) address
+#define MYIP_2 168
+#define MYIP_3 0
+#define MYIP_4 200
+//#define MYIP_4 30
+
+#define SUBMASK_1 255 // subnet mask
+#define SUBMASK_2 255
+#define SUBMASK_3 255
+#define SUBMASK_4 0
+
+#define GWIP_1 192 // standard gateway (used if remote
+#define GWIP_2 168 // IP is no part of our subnet)
+#define GWIP_3 2
+#define GWIP_4 154
+
+#define RETRY_TIMEOUT 8 // wait max. 8 x 262ms for an ACK (about 2 sec.)
+#define FIN_TIMEOUT 2 // max. time to wait for an ACK of a FIN
+ // before closing TCP state-machine (about 0.5 s)
+#define MAX_RETRYS 4 // nr. of resendings before reset conn.
+ // total nr. of transmissions = MAX_RETRYS + 1
+
+#define MAX_TCP_TX_DATA_SIZE 512 // max. outgoing TCP data size (even!)
+#define MAX_TCP_RX_DATA_SIZE 256 // max. incoming TCP data size (even!)
+ // (increasing the buffer-size dramatically
+ // increases the transfer-speed!)
+
+#define MAX_ETH_TX_DATA_SIZE 60 // 2nd buffer, used for ARP, ICMP, TCP (even!)
+ // enough to echo 32 byte via ICMP
+
+#define DEFAULT_TTL 64 // Time To Live sent with packets
+
+// Ethernet network layer definitions
+#define ETH_DA_OFS 0 // Destination MAC address (48 Bit)
+#define ETH_SA_OFS 6 // Source MAC address (48 Bit)
+#define ETH_TYPE_OFS 12 // Type field (16 Bit)
+#define ETH_DATA_OFS 14 // Frame Data
+#define ETH_HEADER_SIZE 14
+
+#define FRAME_ARP 0x0806 // frame types (stored in Type/Length field)
+#define FRAME_IP 0x0800
+
+// IPv4 layer definitions
+#define IP_VER_IHL_TOS_OFS ETH_DATA_OFS + 0 // Version, Header Length, Type of Service
+#define IP_TOTAL_LENGTH_OFS ETH_DATA_OFS + 2 // IP Frame's Total Length
+#define IP_IDENT_OFS ETH_DATA_OFS + 4 // Identifying Value
+#define IP_FLAGS_FRAG_OFS ETH_DATA_OFS + 6 // Flags and Fragment Offset
+#define IP_TTL_PROT_OFS ETH_DATA_OFS + 8 // Frame's Time to Live, Protocol
+#define IP_HEAD_CHKSUM_OFS ETH_DATA_OFS + 10 // IP Frame's Header Checksum
+#define IP_SOURCE_OFS ETH_DATA_OFS + 12 // Source Address (32 Bit)
+#define IP_DESTINATION_OFS ETH_DATA_OFS + 16 // Destination Address (32 Bit)
+#define IP_DATA_OFS ETH_DATA_OFS + 20 // Frame Data (if no options)
+#define IP_HEADER_SIZE 20 // w/o options
+
+#define IP_VER_IHL 0x4500 // IPv4, Header Length = 5x32 bit
+#define IP_TOS_D 0x0010 // TOS low delay
+#define IP_TOS_T 0x0008 // TOS high throughput
+#define IP_TOS_R 0x0004 // TOS high reliability
+
+#define IP_FLAG_DONTFRAG 0x4000 // don't fragment IP frame
+#define IP_FLAG_MOREFRAG 0x2000 // more fragments available
+#define IP_FRAGOFS_MASK 0x1FFF // indicates where this fragment belongs
+
+#define PROT_ICMP 1 // Internet Control Message Protocol
+#define PROT_TCP 6 // Transmission Control Protocol
+#define PROT_UDP 17 // User Datagram Protocol
+
+// ARP definitions
+#define ARP_HARDW_OFS ETH_DATA_OFS + 0 // Hardware address type
+#define ARP_PROT_OFS ETH_DATA_OFS + 2 // Protocol
+#define ARP_HLEN_PLEN_OFS ETH_DATA_OFS + 4 // byte length of each hardw. / prot. address
+#define ARP_OPCODE_OFS ETH_DATA_OFS + 6 // Opcode
+#define ARP_SENDER_HA_OFS ETH_DATA_OFS + 8 // Hardw. address of sender of this packet
+#define ARP_SENDER_IP_OFS ETH_DATA_OFS + 14 // IP address of sender
+#define ARP_TARGET_HA_OFS ETH_DATA_OFS + 18 // Hardw. address of target of this packet
+#define ARP_TARGET_IP_OFS ETH_DATA_OFS + 24 // IP address of target
+#define ARP_FRAME_SIZE 28
+
+#define HARDW_ETH10 1 // hardware-type 10Mbps Ethernet
+#define IP_HLEN_PLEN 0x0604 // MAC = 6 byte long, IP = 4 byte long
+#define OP_ARP_REQUEST 1 // operations for ARP-frames
+#define OP_ARP_ANSWER 2
+
+// ICMP definitions
+#define ICMP_TYPE_CODE_OFS IP_DATA_OFS + 0 // type of message
+#define ICMP_CHKSUM_OFS IP_DATA_OFS + 2 // checksum of ICMP-message (16 bit)
+#define ICMP_DATA_OFS IP_DATA_OFS + 4
+#define ICMP_HEADER_SIZE 4
+
+#define ICMP_ECHO 8 // message is an echo request
+#define ICMP_ECHO_REPLY 0 // message is an echo reply
+
+// TCP layer definitions
+#define TCP_SRCPORT_OFS IP_DATA_OFS + 0 // Source Port (16 bit)
+#define TCP_DESTPORT_OFS IP_DATA_OFS + 2 // Destination Port (16 bit)
+#define TCP_SEQNR_OFS IP_DATA_OFS + 4 // Sequence Number (32 bit)
+#define TCP_ACKNR_OFS IP_DATA_OFS + 8 // Acknowledge Number (32 bit)
+#define TCP_DATA_CODE_OFS IP_DATA_OFS + 12 // Data Offset and Control Bits (16 bit)
+#define TCP_WINDOW_OFS IP_DATA_OFS + 14 // Window Size (16 bit)
+#define TCP_CHKSUM_OFS IP_DATA_OFS + 16 // Checksum Field (16 bit)
+#define TCP_URGENT_OFS IP_DATA_OFS + 18 // Urgent Pointer (16 bit)
+#define TCP_DATA_OFS IP_DATA_OFS + 20 // Frame Data (if no options)
+#define TCP_HEADER_SIZE 20 // size w/o options
+
+#define DATA_OFS_MASK 0xF000 // number of 32 bit words in the TCP Header
+
+#define TCP_CODE_FIN 0x0001
+#define TCP_CODE_SYN 0x0002
+#define TCP_CODE_RST 0x0004
+#define TCP_CODE_PSH 0x0008
+#define TCP_CODE_ACK 0x0010
+#define TCP_CODE_URG 0x0020
+
+#define TCP_OPT_MSS 0x0204 // Type 2, Option Length 4 (Max. Segment Size)
+#define TCP_OPT_MSS_SIZE 4
+
+// define some TCP standard-ports, useful for testing...
+#define TCP_PORT_ECHO 7 // echo
+#define TCP_PORT_DISCARD 9 // discard
+#define TCP_PORT_DAYTIME 13 // daytime
+#define TCP_PORT_QOTD 17 // quote of the day
+#define TCP_PORT_CHARGEN 19 // character generator
+#define TCP_PORT_HTTP 80 // word wide web HTTP
+
+// macros
+#define SWAPB(Word) ((unsigned short)((Word) << 8) | ((Word) >> 8))
+ // convert little <-> big endian
+
+// typedefs
+typedef enum { // states of the TCP-state machine
+ CLOSED, // according to RFC793
+ LISTENING,
+ SYN_SENT,
+ SYN_RECD,
+ ESTABLISHED,
+ FIN_WAIT_1,
+ FIN_WAIT_2,
+ CLOSE_WAIT,
+ CLOSING,
+ LAST_ACK,
+ TIME_WAIT
+} TTCPStateMachine;
+
+typedef enum { // type of last frame sent. used
+ ARP_REQUEST, // for retransmissions
+ TCP_SYN_FRAME,
+ TCP_SYN_ACK_FRAME,
+ TCP_FIN_FRAME,
+ TCP_DATA_FRAME
+} TLastFrameSent;
+
+// constants
+
+// Code Red
+// ifdef added as due to change to including .h files rather than .c files.
+// The use of ifdef reduces the coding changes that would otherwise be required,
+// depending upon which file is including this one.
+// the next 3 buffers must be word-aligned!
+// (here the 'RecdIPFrameLength' above does that)
+
+extern unsigned short _TxFrame1[(ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE + MAX_TCP_TX_DATA_SIZE)/2];
+extern unsigned short _TxFrame2[(ETH_HEADER_SIZE + MAX_ETH_TX_DATA_SIZE)/2];
+extern unsigned short _RxTCPBuffer[MAX_TCP_RX_DATA_SIZE/2]; // space for incoming TCP-data
+#define TxFrame1 ((unsigned char *)_TxFrame1)
+#define TxFrame2 ((unsigned char *)_TxFrame2)
+#define RxTCPBuffer ((unsigned char *)_RxTCPBuffer)
+
+//
+// prototypes
+void DoNetworkStuff(void);
+
+// Handlers for incoming frames
+void ProcessEthBroadcastFrame(void);
+void ProcessEthIAFrame(void);
+void ProcessICMPFrame(void);
+void ProcessTCPFrame(void);
+
+// fill TX-buffers
+void PrepareARP_REQUEST(void);
+void PrepareARP_ANSWER(void);
+void PrepareICMP_ECHO_REPLY(void);
+void PrepareTCP_FRAME(unsigned short TCPCode);
+void PrepareTCP_DATA_FRAME(void);
+
+// general help functions
+void SendFrame1(void);
+void SendFrame2(void);
+void TCPStartRetryTimer(void);
+void TCPStartTimeWaitTimer(void);
+void TCPRestartTimer(void);
+void TCPStopTimer(void);
+void TCPHandleRetransmission(void);
+void TCPHandleTimeout(void);
+unsigned short CalcChecksum(void *Start, unsigned short Count, unsigned char IsTCP);
+
+// functions to work with big-endian numbers
+unsigned short SwapBytes(unsigned short Data);
+void WriteWBE(unsigned char *Add, unsigned short Data);
+void WriteDWBE(unsigned char *Add, unsigned long Data);
+
+// easyWEB-API functions
+void TCPLowLevelInit(void); // setup timer, LAN-controller, flags...
+void TCPPassiveOpen(void); // listen for a connection
+void TCPActiveOpen(void); // open connection
+void TCPClose(void); // close connection
+void TCPReleaseRxBuffer(void); // indicate to discard rec'd packet
+void TCPTransmitTxBuffer(void); // initiate transfer after TxBuffer is filled
+// Code Red - added declaration for Timer0 ISR
+void TCPClockHandler(void);
+
+// easyWEB-API global vars and flags
+extern unsigned short TCPRxDataCount; // nr. of bytes rec'd
+extern unsigned short TCPTxDataCount; // nr. of bytes to send
+
+extern unsigned short TCPLocalPort; // TCP ports
+extern unsigned short TCPRemotePort;
+
+extern unsigned short RemoteMAC[3]; // MAC and IP of current TCP-session
+extern unsigned short RemoteIP[2];
+
+extern unsigned char SocketStatus;
+#define SOCK_ACTIVE 0x01 // state machine NOT closed
+#define SOCK_CONNECTED 0x02 // user may send & receive data
+#define SOCK_DATA_AVAILABLE 0x04 // new data available
+#define SOCK_TX_BUF_RELEASED 0x08 // user may fill buffer
+
+#define SOCK_ERROR_MASK 0xF0 // bit-mask to check for errors
+#define SOCK_ERR_OK 0x00 // no error
+#define SOCK_ERR_ARP_TIMEOUT 0x10 // timeout waiting for an ARP-REPLY
+#define SOCK_ERR_TCP_TIMEOUT 0x20 // timeout waiting for an ACK
+#define SOCK_ERR_CONN_RESET 0x30 // connection was reset by the other TCP
+#define SOCK_ERR_REMOTE 0x40 // remote TCP caused fatal error
+#define SOCK_ERR_ETHERNET 0x50 // network interface error (timeout)
+
+// easyWEB-API buffer-pointers
+#define TCP_TX_BUF ((unsigned char *)TxFrame1 + ETH_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE)
+#define TCP_RX_BUF ((unsigned char *)RxTCPBuffer)
+
+#endif
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webside.h Fri Jan 29 21:46:31 2010 +0000
@@ -0,0 +1,145 @@
+/******************************************************************
+ ***** *****
+ ***** Name: webside.c *****
+ ***** Ver.: 1.0 *****
+ ***** Date: 07/05/2001 *****
+ ***** Auth: Andreas Dannenberg *****
+ ***** HTWK Leipzig *****
+ ***** university of applied sciences *****
+ ***** Germany *****
+ ***** adannenb@et.htwk-leipzig.de *****
+ ***** Func: example HTML-code for easyweb.c *****
+ ***** *****
+ ******************************************************************/
+
+// CodeRed - Example webpage updated
+
+const unsigned char WebSide[] = {
+"<html>\r\n"
+"<head>\r\n"
+"<meta http-equiv=\"refresh\" content=\"1\">\r\n"
+"<title>easyWEB - dynamic Webside</title>\r\n"
+"</head>\r\n"
+"\r\n"
+"<body bgcolor=\"red\" text=\"#FFFF00\">\r\n"
+"<p><b><font color=\"#FFFFFF\" size=\"6\"><i>Hello World from Code Red Technology!</i></font></b></p>\r\n"
+"\r\n"
+"<p><b>This is a dynamic website hosted by the embedded Webserver</b> <b>easyWEB.</b></p>\r\n"
+"<p><b>Hardware:</b></p>\r\n"
+"<ul>\r\n"
+"<li><b>Code Red RDB1768 Development Board - NXP LPC1768 MCU with ARM Cortex-M3 CPU</b></li>\r\n"
+"<li><b>Embedded EMAC Ethernet Controller</b></li>\r\n"
+"</ul>\r\n"
+"\r\n"
+"<p><b>Variable value: AD8% (decimal value from 'val')</b></p>\r\n"
+"\r\n"
+"<table bgcolor=\"#ff0000\" border=\"5\" cellpadding=\"0\" cellspacing=\"0\" width=\"500\">\r\n"
+"<tr>\r\n"
+"<td>\r\n"
+"<table width=\"AD7%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">\r\n"
+"<tr><td bgcolor=\"#00ff00\"> </td></tr>\r\n"
+"</table>\r\n"
+"</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"\r\n"
+"<table border=\"0\" width=\"540\">\r\n"
+"<tr>\r\n"
+"<td width=\"25%\">0</td>\r\n"
+"<td width=\"25%\">256</td>\r\n"
+"<td width=\"25%\">512</td>\r\n"
+"<td width=\"25%\">768</td>\r\n"
+"<td width=\"25%\">1024</td>\r\n"
+//"<td width=\"15%\">2.5V</td>\r\n"
+//"<td width=\"15%\">3V</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"\r\n"
+"<br><br><br><br>\r\n"
+"<table border=\"0\" width=\"500\">\r\n"
+"<tr>\r\n"
+"<td width=\"1%\"></td>\r\n"
+"<td width=\"60%\">\r\n"
+"<table bgcolor=\"red\" border=\"5\" cellpadding=\"0\" cellspacing=\"0\" width=\"350\">\r\n"
+"<tr>\r\n"
+"<td>\r\n"
+"<p><b><font color=\"#FFFFFF\" size=\"6\"><i>Page Count: AD1%</i></font></b></p>\r\n"
+"</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"\r\n"
+"\r\n"
+"\r\n"
+"</body>\r\n"
+"</html>\r\n"
+"\r\n"};
+
+// Code Red - Original page removed
+/*
+const unsigned char WebSide[] = {
+"<html>\r\n"
+"<head>\r\n"
+"<meta http-equiv=\"refresh\" content=\"5\">\r\n"
+"<title>easyWEB - dynamic Webside</title>\r\n"
+"</head>\r\n"
+"\r\n"
+"<body bgcolor=\"#3030A0\" text=\"#FFFF00\">\r\n"
+"<p><b><font color=\"#FFFFFF\" size=\"6\"><i>Hello World!</i></font></b></p>\r\n"
+"\r\n"
+"<p><b>This is a dynamic webside hosted by the embedded Webserver</b> <b>easyWEB.</b></p>\r\n"
+"<p><b>Hardware:</b></p>\r\n"
+"<ul>\r\n"
+"<li><b>MSP430F149, 8 MHz, 60KB Flash, 2KB SRAM</b></li>\r\n"
+"<li><b>CS8900A Crystal Ethernet Controller</b></li>\r\n"
+"</ul>\r\n"
+"\r\n"
+"<p><b>A/D Converter Value Port P6.7:</b></p>\r\n"
+"\r\n"
+"<table bgcolor=\"#ff0000\" border=\"5\" cellpadding=\"0\" cellspacing=\"0\" width=\"500\">\r\n"
+"<tr>\r\n"
+"<td>\r\n"
+"<table width=\"AD7%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">\r\n"
+"<tr><td bgcolor=\"#00ff00\"> </td></tr>\r\n"
+"</table>\r\n"
+"</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"\r\n"
+"<table border=\"0\" width=\"500\">\r\n"
+"<tr>\r\n"
+"<td width=\"20%\">0V</td>\r\n"
+"<td width=\"20%\">0,5V</td>\r\n"
+"<td width=\"20%\">1V</td>\r\n"
+"<td width=\"20%\">1,5V</td>\r\n"
+"<td width=\"20%\">2V</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"\r\n"
+"<p><b>MCU Temperature:</b></p>\r\n"
+"\r\n"
+"<table bgcolor=\"#ff0000\" border=\"5\" cellpadding=\"0\" cellspacing=\"0\" width=\"500\">\r\n"
+"<tr>\r\n"
+"<td>\r\n"
+"<table width=\"ADA%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\">\r\n"
+"<tr><td bgcolor=\"#00ff00\"> </td></tr> \r\n"
+"</table>\r\n"
+"</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"\r\n"
+"<table border=\"0\" width=\"500\">\r\n"
+"<tr>\r\n"
+"<td width=\"20%\">20�C</td>\r\n"
+"<td width=\"20%\">25�C</td>\r\n"
+"<td width=\"20%\">30�C</td>\r\n"
+"<td width=\"20%\">35�C</td>\r\n"
+"<td width=\"20%\">40�C</td>\r\n"
+"</tr>\r\n"
+"</table>\r\n"
+"</body>\r\n"
+"</html>\r\n"
+"\r\n"};
+*/
\ No newline at end of file