Revision 1:63b6db2e24a5, committed 2012-01-30

Comitter:

pangsk

Date:

Mon Jan 30 21:44:36 2012 +0000

Parent:

0:7f301f08b68f

Commit message:

Correct init code in RF12B.cpp

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RF12B.lib	Mon Jan 30 21:44:36 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/pangsk/code/RF12B/#12d8175359f2

--- a/RF12B/RF12B.cpp	Mon Jan 02 20:03:01 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,276 +0,0 @@
-/* RF12B Library. Based on work done by JeeLabs.org ported to mbed by SK Pang.
-http://jeelabs.net/projects/cafe/wiki/RF12
-
-http://opensource.org/licenses/mit-license.php
-
-Jan 2012 skpang.co.uk
-
-*/
-
-#include "RF12B.h"
-
-// RF12 command codes
-#define RF_RECEIVER_ON  0x82DD
-#define RF_XMITTER_ON   0x823D
-#define RF_IDLE_MODE    0x820D
-#define RF_SLEEP_MODE   0x8205
-#define RF_WAKEUP_MODE  0x8207
-#define RF_TXREG_WRITE  0xB800
-#define RF_RX_FIFO_READ 0xB000
-#define RF_WAKEUP_TIMER 0xE000
-
-// RF12 status bits
-#define RF_LBD_BIT      0x0400
-#define RF_RSSI_BIT     0x0100
-
-// bits in the node id configuration byte
-#define NODE_BAND       0xC0        // frequency band
-#define NODE_ACKANY     0x20        // ack on broadcast packets if set
-#define NODE_ID         0x1F        // id of this node, as A..Z or 1..31
-
-// transceiver states, these determine what to do with each interrupt
-enum {
-    TXCRC1, TXCRC2, TXTAIL, TXDONE, TXIDLE,
-    TXRECV,
-    TXPRE1, TXPRE2, TXPRE3, TXSYN1, TXSYN2,
-};
-
-DigitalOut rfled(LED3);
-DigitalOut t1(p5);
-DigitalOut t2(p6);
-
-RF12B::RF12B(PinName _SDI,
-             PinName _SDO,
-             PinName _SCK,
-             PinName _NCS,
-             PinName _NIRQ):spi(_SDI, _SDO, _SCK),
-        NCS(_NCS), NIRQ(_NIRQ), NIRQ_in(_NIRQ), rfled(LED3),t1(p5),t2(p6) {
-
-    /* SPI frequency, word lenght, polarity and phase */
-    spi.format(8,0);
-    spi.frequency(2000000);
-
-    /* Set ~CS high */
-    NCS = 1;
-
-    /* Setup interrupt to happen on falling edge of NIRQ */
-    NIRQ.fall(this, &RF12B::rxISR);
-}
-
-
-/**********************************************************************
- *  PRIVATE FUNCTIONS
- *********************************************************************/
-
-/* Initialises the RF12B module */
-void RF12B::init(uint8_t id, uint8_t band, uint8_t g) {
-  
-    nodeid = id;
-    group = g;
-    rf12_grp = g; 
-    
-    writeCmd(0x0000); // intitial SPI transfer added to avoid power-up problem
-    writeCmd(RF_SLEEP_MODE); // DC (disable clk pin), enable lbd
-    
-    // wait until RFM12B is out of power-up reset, this takes several *seconds*
-    writeCmd(RF_TXREG_WRITE); // in case we're still in OOK mode
-      
-    while (NIRQ == 0)  writeCmd(0x0000);
-        
-    writeCmd(0x80C7 | (2 << 4)); // EL (ena TX), EF (ena RX FIFO), 12.0pF 
-    writeCmd(0xA640); // 868MHz 
-    writeCmd(0xC606); // approx 49.2 Kbps, i.e. 10000/29/(1+6) Kbps
-    writeCmd(0x94A2); // VDI,FAST,134kHz,0dBm,-91dBm 
-    writeCmd(0xC2AC); // AL,!ml,DIG,DQD4 
-   
-    writeCmd(0xCA83); // FIFO8,2-SYNC,!ff,DR 
-    writeCmd(0xCE00 | 1); // SYNC=2DXX&#65307; 
-    
-    writeCmd(0xC483); // @PWR,NO RSTRIC,!st,!fi,OE,EN 
-    writeCmd(0x9850); // !mp,90kHz,MAX OUT 
-    writeCmd(0xCC77); // OB1&#65292;OB0, LPX,&#65281;ddy&#65292;DDIT&#65292;BW0 
-    writeCmd(0xE000); // NOT USE 
-    writeCmd(0xC800); // NOT USE 
-    writeCmd(0xC049); // 1.66MHz,3.1V 
-
-    rxstate = TXIDLE;
-       
-    rfled = 0;
-}
-
-/* Write a command to the RF Module */
-unsigned int RF12B::writeCmd(unsigned int cmd) {
-    NCS = 0;
-    unsigned int recv = spi.write(cmd >>8);
-    recv = spi.write(cmd);
-    NCS = 1;
-    return recv;
-}
-
-/* Sends a byte of data across RF */
-void RF12B::send(unsigned char data) {
-   while (NIRQ);
-   writeCmd(0xB800 + data);
-}
-
-
-/* Interrupt routine for data reception and Txing */
-void RF12B::rxISR() {
-
-   // a transfer of 2x 16 bits @ 2 MHz over SPI takes 2x 8 us inside this ISR
-    writeCmd(0x0000);
-    
-    if (rxstate == TXRECV) {
-        uint8_t in = rf12_xfer(RF_RX_FIFO_READ);
-
-        if (rxfill == 0 && group != 0)
-            rf12_buf[rxfill++] = group;
-            
-        rf12_buf[rxfill++] = in;
-        rf12_crc = _crc16_update(rf12_crc, in);
-
-        if (rxfill >= rf12_len + 5 || rxfill >= RF_MAX)
-            rf12_xfer(RF_IDLE_MODE);
-    } else {
-        uint8_t out;
-
-        if (rxstate < 0) {
-            uint8_t pos = 3 + rf12_len + rxstate++;
-            out = rf12_buf[pos];
-            rf12_crc = _crc16_update(rf12_crc, out);
-        } else
-            switch (rxstate++) {
-                case TXSYN1: out = 0x2D; break;
-                case TXSYN2: out = rf12_grp; rxstate = - (2 + rf12_len); break;
-                case TXCRC1: out = rf12_crc; break;
-                case TXCRC2: out = rf12_crc >> 8; break;
-                case TXDONE: rf12_xfer(RF_IDLE_MODE); // fall through
-                default: out = 0xAA;
-            }
-       
-        rf12_xfer(RF_TXREG_WRITE + out);
-    }
- }
-
-
-void RF12B::rf12_sendStart (uint8_t hdr, const void* ptr, uint8_t len)
-{
-    rf12_len = len;
-    memcpy((void*) rf12_data, ptr, len);
-  
-    rf12_sendStart2(hdr);
-
-}
-void RF12B::rf12_sendStart2 (uint8_t hdr) {
-    rf12_hdr = hdr & RF12_HDR_DST ? hdr :
-                (hdr & ~RF12_HDR_MASK) + (nodeid & NODE_ID);
- 
- /*   if (crypter != 0)
-        crypter(1);
- */   
-    rf12_crc = ~0;
-
-    rf12_crc = _crc16_update(rf12_crc, rf12_grp);
-    rxstate = TXPRE1;
-      
-    rf12_xfer(RF_XMITTER_ON); // bytes will be fed via interrupts
-}
-
-
- uint16_t RF12B::rf12_xfer (uint16_t cmd) {
-    NCS = 0;
-    uint16_t reply = rf12_byte(cmd >> 8) << 8;
-    reply |= rf12_byte(cmd);
-    NCS = 1;
-    return reply;
-}
-
- void RF12B::rf12_recvStart (void) {
-    rxfill = rf12_len = 0;
-    rf12_crc = ~0;
-
-    if (group != 0)
-        rf12_crc = _crc16_update(~0, group);
-
-    rxstate = TXRECV;    
-    rf12_xfer(RF_RECEIVER_ON);
-}
-uint16_t RF12B::check_crc(void)
-{
-
-    return rf12_crc;
-}
-uint8_t RF12B::length(void)
-{
-
-    return rf12_len;
-}
- uint8_t* RF12B::get_data(void)
-{
-    return  (uint8_t*)rf12_data;
-
-}
-
-
-uint8_t  RF12B::rf12_recvDone (void) {
-    
-     if (rxstate == TXRECV && (rxfill >= rf12_len + 5 || rxfill >= RF_MAX)) {
-        rxstate = TXIDLE;
- 
-        if (rf12_len > RF12_MAXDATA)
-            rf12_crc = 1; // force bad crc if packet length is invalid
-        if (!(rf12_hdr & RF12_HDR_DST) || (nodeid & NODE_ID) == 31 ||
-                (rf12_hdr & RF12_HDR_MASK) == (nodeid & NODE_ID)) {
-                /*
-                for(i=0;i<rf12_len+6;i++)
-                {
-                    printf("%X ",rf12_buf[i]);
-                }
-                printf(" crc:%x",rf12_crc);
-                */
-           /*     
-            if (rf12_crc == 0 && crypter != 0)
-                crypter(0);
-            else
-                rf12_seq = -1;
-                 */
-            return 1; // it's a broadcast packet or it's addressed to this node
-           
-        }
-    }
-    if (rxstate == TXIDLE)
-        rf12_recvStart();
-    return 0;
-}
-
-uint8_t RF12B::rf12_byte(uint8_t out)
-{
-  unsigned char recv = spi.write(out);
- 
-    return recv;
-}
- 
-uint16_t RF12B::_crc16_update(uint16_t crc, uint8_t data) {
-    int i;
-
-    crc ^= data;
-    for (i = 0; i < 8; ++i)
-    {
-        if (crc & 1)
-        crc = (crc >> 1) ^ 0xA001;
-        else
-        crc = (crc >> 1);
-    }
-
-    return crc;
-}
-
-
-
-
-
-
-
-
-
-

--- a/RF12B/RF12B.h	Mon Jan 02 20:03:01 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,90 +0,0 @@
-#ifndef _RF12B_H
-#define _RF12B_H
-
-#include "mbed.h"
-
-
-#define rf12_grp        rf12_buf[0]
-#define rf12_hdr        rf12_buf[1]
-#define rf12_len        rf12_buf[2]
-#define rf12_data       (rf12_buf + 3)
-
-#define RF12_HDR_CTL    0x80
-#define RF12_HDR_DST    0x40
-#define RF12_HDR_ACK    0x20
-#define RF12_HDR_MASK   0x1F
-
-#define RF12_MAXDATA    66
-// maximum transmit / receive buffer: 3 header + data + 2 crc bytes
-#define RF_MAX   (RF12_MAXDATA + 5)
-#define PACKET_LEN 16
-
-// shorthand to simplify sending out the proper ACK when requested
-#define RF12_WANTS_ACK ((rf12_hdr & RF12_HDR_ACK) && !(rf12_hdr & RF12_HDR_CTL))
-#define RF12_ACK_REPLY (rf12_hdr & RF12_HDR_DST ? RF12_HDR_CTL : \
-            RF12_HDR_CTL | RF12_HDR_DST | (rf12_hdr & RF12_HDR_MASK))
-            
-            
-//enum rfmode_t{RX, TX};
-
-class RF12B {
-public:
-    /* Constructor */
-    RF12B(PinName SDI,
-          PinName SDO,
-          PinName SCK,
-          PinName NCS,
-          PinName NIRQ);
-   
-     
-    /* Initialises the RF12B module */
-    void init(uint8_t id, uint8_t band, uint8_t g);
-        
- 
-    /* Returns the packet length if data is available in the receive buffer, 0 otherwise*/
-   unsigned int available();
-   void rf12_sendStart (uint8_t hdr, const void* ptr, uint8_t len);
-   void rf12_sendStart2 (uint8_t hdr); 
-   uint8_t  rf12_recvDone (void);
-   void rf12_recvStart (void);
-   uint16_t check_crc(void);
-   uint8_t length(void);
-   uint8_t* get_data(void);
-   
-protected:
-
-    /* SPI module */
-    SPI spi;
-    
-    /* Other digital pins */
-    DigitalOut NCS;
-    InterruptIn NIRQ;
-    DigitalIn NIRQ_in;
-    DigitalOut rfled;
-    DigitalOut t1;
-    DigitalOut t2;
-    volatile uint16_t rf12_crc; // running crc value
-    volatile unsigned char rf12_buf[RF_MAX];  // recv/xmit buf, including hdr & crc bytes  
-    volatile  uint8_t nodeid;              // address of this node
-    volatile  uint8_t group;               // network grou
-    volatile uint8_t rxfill;     // number of data bytes in rf12_buf
-    volatile int8_t rxstate;     // current transceiver state
- 
-
-    /* Write a command to the RF Module */
-    unsigned int writeCmd(unsigned int cmd);
-    
-    /* Sends a byte of data across RF */
-    void send(unsigned char data);
-    
-    /* Interrupt routine for data reception */
-    void rxISR();
-    
-
-    uint16_t _crc16_update(uint16_t crc, uint8_t data);
-    
-    uint16_t rf12_xfer (uint16_t cmd);    
-    uint8_t rf12_byte(uint8_t out);
-};
-
-#endif /* _RF12B_H */
\ No newline at end of file

--- a/main.cpp	Mon Jan 02 20:03:01 2012 +0000
+++ b/main.cpp	Mon Jan 30 21:44:36 2012 +0000
@@ -13,7 +13,7 @@
 #include "EthernetNetIf.h"
 #include "HTTPClient.h"
  
-#define API_KEY "PUT YOUR CODE KEY HERE"
+#define API_KEY "F8Gcwdhx2PvIdUrcGa84hbgBK6NC88yYUp1FxHG6f4E"
 #define FEED_ID 40980
 #define STREAM_ID "1"