Driver for CC3000 Wi-Fi module

Dependencies:   NVIC_set_all_priorities

Dependents:   CC3000_Simple_Socket Wi-Go_IOT_Demo

Information

The current code has been reworked to a full object oriented application and contains an mbed socket compatible API.

CC3000 Wi-Fi module library

Info

This is the low level driver for TI's SimpleLink CC3000 device.
Port from Avnet's Wi-Go KEIL code (based on TI's CC3000 code).
Special thanks to Jim Carver from Avnet for providing the Wi-Go board and for his assistance.

Differences with TI's original code

The code functionality stays exactly the same.
In order to make it easier to use the code, following changes were made :

  • Addition of a tool to shift all IRQ priorities to a lower level since it is very important to keep the SPI handler at the highest system priority, the WLAN interrupt the second highest and all other system interrupts at a lower priority, so their handlers can be preempted by the CC3000 interrupts.
  • Addition of low level I/O controls and conditional compiler controls in cc3000_common.h.
  • CC3000 initialisation, pin declarations, SPI and WLAN irq priorities are set in Init_HostDriver , we need to call this function at the start of the main function.
  • The SPI and HCI code are joined into one file.
  • The include list has been rearranged - Only #include "wlan.h" is needed in the user API.
  • Part of the CC3000's user eeprom memory is used to store additional info (52 bytes in NVMEM_USER_FILE_1):
# bytesDescriptionInfo
1First time config parameterUseful when connecting
2Firmware updater versionused with the Firmware update tool
2Service Pack versionused with the Firmware update tool
3Driver Versionused with the Firmware update tool
3Firmware Versionused with the Firmware update tool
1CIK validation (Client Interface Key)
40CIK data (Client Interface Key)used with the exosite

Using the Library

A user API is needed to access the CC3000 functions.
Examples:

Using the library with other processors

cc3000_common.cpp loads the irq tool for all targets:
All current mbed targets are supported by this library.

#include "NVIC_set_all_priorities.h"


All low level settings that need to change are available in cc3000_common.h

//*****************************************************************************
//              PIN CONTROLS & COMPILE CONTROLS
//*****************************************************************************
// Compiler control
#define CC3000_UNENCRYPTED_SMART_CONFIG   // No encryption
//#define CC3000_TINY_DRIVER                // Driver for small memory model CPUs

//Interrupt controls
#define NVIC_ALL_IRQ        NVIC_set_all_irq_priorities(3);         // Set ALL interrupt priorities to level 3
#define NVIC_SPI_IRQ        NVIC_SetPriority(SPI0_IRQn, 0x0);       // Wi-Fi SPI interrupt must be higher priority than SysTick
#define NVIC_PORT_IRQ       NVIC_SetPriority(PORTA_IRQn, 0x1);
#define NVIC_SYSTICK_IRQ    NVIC_SetPriority(SysTick_IRQn, 0x2);    // SysTick set to lower priority than Wi-Fi SPI bus interrupt
//#define NVIC_ADC_IRQ        NVIC_SetPriority(ADC0_IRQn, 0x3);       // ADC is the lowest of all

// Wlan controls
#define WLAN_ISF_PCR        PORTA->PCR[16]
#define WLAN_ISF_ISFR       PORTA->ISFR
#define WLAN_ISF_MASK       (1<<16)

#define WLAN_ASSERT_CS      wlan_cs = 0;   //CS : active low
#define WLAN_DEASSERT_CS    wlan_cs = 1;

#define WLAN_ASSERT_EN      wlan_en = 1;   //EN : active high
#define WLAN_DEASSERT_EN    wlan_en = 0;

#define WLAN_READ_IRQ       wlan_int

#define WLAN_ENABLE_IRQ     wlan_int.fall(&WLAN_IRQHandler);
#define WLAN_DISABLE_IRQ    wlan_int.fall(NULL);

#define WLAN_IRQ_PIN_CREATE         InterruptIn wlan_int (PTA16);
#define WLAN_EN_PIN_CREATE          DigitalOut  wlan_en  (PTA13);
#define WLAN_CS_PIN_CREATE          DigitalOut  wlan_cs  (PTD0);
#define WLAN_SPI_PORT_CREATE        SPI wlan(PTD2, PTD3, PTC5); // mosi, miso, sclk

#define WLAN_SPI_PORT_INIT          wlan.format(8,1);
#define WLAN_SPI_SET_FREQ           wlan.frequency(12000000);
#define WLAN_SPI_SET_IRQ_HANDLER    wlan_int.fall(&WLAN_IRQHandler);

#define WLAN_SPI_WRITE              wlan.write(*data++);
#define WLAN_SPI_READ               wlan.write(0x03);          // !! DO NOT MODIFY the 0x03 parameter (CC3000 will not respond).

API documentation

Due to a little problem with the links on the mbed site, the API documentation is not directly accessible (will be solved in a next release).
Currently, it is only accessible by adding modules.html to the API doc link: http://mbed.org/users/frankvnk/code/CC3000_Hostdriver/docs/tip/modules.html

Committer:
frankvnk
Date:
Mon Jul 15 14:19:46 2013 +0000
Revision:
4:d8255a5aad46
Parent:
1:bbcaf0b2f367
Child:
5:854f9b13a0f9
Full clean up (comments, Doxygen, code)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
frankvnk 0:c44f0314d6ec 1 /*****************************************************************************
frankvnk 0:c44f0314d6ec 2 *
frankvnk 0:c44f0314d6ec 3 * cc3000_common.h - CC3000 Host Driver Implementation.
frankvnk 0:c44f0314d6ec 4 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
frankvnk 0:c44f0314d6ec 5 *
frankvnk 0:c44f0314d6ec 6 * Redistribution and use in source and binary forms, with or without
frankvnk 0:c44f0314d6ec 7 * modification, are permitted provided that the following conditions
frankvnk 0:c44f0314d6ec 8 * are met:
frankvnk 0:c44f0314d6ec 9 *
frankvnk 0:c44f0314d6ec 10 * Redistributions of source code must retain the above copyright
frankvnk 0:c44f0314d6ec 11 * notice, this list of conditions and the following disclaimer.
frankvnk 0:c44f0314d6ec 12 *
frankvnk 0:c44f0314d6ec 13 * Redistributions in binary form must reproduce the above copyright
frankvnk 0:c44f0314d6ec 14 * notice, this list of conditions and the following disclaimer in the
frankvnk 0:c44f0314d6ec 15 * documentation and/or other materials provided with the
frankvnk 0:c44f0314d6ec 16 * distribution.
frankvnk 0:c44f0314d6ec 17 *
frankvnk 0:c44f0314d6ec 18 * Neither the name of Texas Instruments Incorporated nor the names of
frankvnk 0:c44f0314d6ec 19 * its contributors may be used to endorse or promote products derived
frankvnk 0:c44f0314d6ec 20 * from this software without specific prior written permission.
frankvnk 0:c44f0314d6ec 21 *
frankvnk 0:c44f0314d6ec 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
frankvnk 0:c44f0314d6ec 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
frankvnk 0:c44f0314d6ec 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
frankvnk 0:c44f0314d6ec 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
frankvnk 0:c44f0314d6ec 26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
frankvnk 0:c44f0314d6ec 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
frankvnk 0:c44f0314d6ec 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
frankvnk 0:c44f0314d6ec 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
frankvnk 0:c44f0314d6ec 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
frankvnk 0:c44f0314d6ec 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
frankvnk 0:c44f0314d6ec 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
frankvnk 0:c44f0314d6ec 33 *
frankvnk 0:c44f0314d6ec 34 *****************************************************************************/
frankvnk 0:c44f0314d6ec 35 #ifndef __COMMON_H__
frankvnk 0:c44f0314d6ec 36 #define __COMMON_H__
frankvnk 0:c44f0314d6ec 37
frankvnk 0:c44f0314d6ec 38 #include <errno.h>
frankvnk 0:c44f0314d6ec 39
frankvnk 0:c44f0314d6ec 40 /** CC3000 Host driver - common
frankvnk 0:c44f0314d6ec 41 *
frankvnk 0:c44f0314d6ec 42 */
frankvnk 4:d8255a5aad46 43
frankvnk 0:c44f0314d6ec 44 #ifdef __cplusplus
frankvnk 0:c44f0314d6ec 45 extern "C" {
frankvnk 0:c44f0314d6ec 46 #endif
frankvnk 0:c44f0314d6ec 47
frankvnk 0:c44f0314d6ec 48 //*****************************************************************************
frankvnk 0:c44f0314d6ec 49 // ERROR CODES
frankvnk 0:c44f0314d6ec 50 //*****************************************************************************
frankvnk 0:c44f0314d6ec 51 #define ESUCCESS 0
frankvnk 0:c44f0314d6ec 52 #define EFAIL -1
frankvnk 0:c44f0314d6ec 53 #define EERROR EFAIL
frankvnk 0:c44f0314d6ec 54
frankvnk 0:c44f0314d6ec 55 //*****************************************************************************
frankvnk 0:c44f0314d6ec 56 // COMMON DEFINES
frankvnk 0:c44f0314d6ec 57 //*****************************************************************************
frankvnk 0:c44f0314d6ec 58 #define ERROR_SOCKET_INACTIVE -57
frankvnk 0:c44f0314d6ec 59
frankvnk 0:c44f0314d6ec 60 #define HCI_CC_PAYLOAD_LEN 5
frankvnk 0:c44f0314d6ec 61
frankvnk 1:bbcaf0b2f367 62 #define WLAN_ENABLE (1)
frankvnk 1:bbcaf0b2f367 63 #define WLAN_DISABLE (0)
frankvnk 0:c44f0314d6ec 64
frankvnk 1:bbcaf0b2f367 65 #define MAC_ADDR_LEN (6)
frankvnk 0:c44f0314d6ec 66
frankvnk 0:c44f0314d6ec 67
frankvnk 0:c44f0314d6ec 68
frankvnk 0:c44f0314d6ec 69 /*Defines for minimal and maximal RX buffer size. This size includes the spi
frankvnk 0:c44f0314d6ec 70 header and hci header.
frankvnk 1:bbcaf0b2f367 71 maximal buffer size: MTU + HCI header + SPI header + sendto() args size
frankvnk 1:bbcaf0b2f367 72 minimum buffer size: HCI header + SPI header + max args size
frankvnk 0:c44f0314d6ec 73
frankvnk 0:c44f0314d6ec 74 This buffer is used for receiving events and data.
frankvnk 0:c44f0314d6ec 75 The packet can not be longer than MTU size and CC3000 does not support
frankvnk 0:c44f0314d6ec 76 fragmentation. Note that the same buffer is used for reception of the data
frankvnk 0:c44f0314d6ec 77 and events from CC3000. That is why the minimum is defined.
frankvnk 0:c44f0314d6ec 78 The calculation for the actual size of buffer for reception is:
frankvnk 0:c44f0314d6ec 79 Given the maximal data size MAX_DATA that is expected to be received by
frankvnk 1:bbcaf0b2f367 80 application, the required buffer Using recv() or recvfrom():
frankvnk 0:c44f0314d6ec 81
frankvnk 1:bbcaf0b2f367 82 max(CC3000_MINIMAL_RX_SIZE, MAX_DATA + HEADERS_SIZE_DATA + fromlen + ucArgsize + 1)
frankvnk 0:c44f0314d6ec 83
frankvnk 1:bbcaf0b2f367 84 Using gethostbyname() with minimal buffer size will limit the host name returned to 99 bytes.
frankvnk 0:c44f0314d6ec 85 The 1 is used for the overrun detection
frankvnk 0:c44f0314d6ec 86 */
frankvnk 0:c44f0314d6ec 87
frankvnk 1:bbcaf0b2f367 88 #define CC3000_MINIMAL_RX_SIZE (118 + 1)
frankvnk 0:c44f0314d6ec 89 #define CC3000_MAXIMAL_RX_SIZE (1519 + 1)
frankvnk 0:c44f0314d6ec 90
frankvnk 0:c44f0314d6ec 91 /*Defines for minimal and maximal TX buffer size.
frankvnk 0:c44f0314d6ec 92 This buffer is used for sending events and data.
frankvnk 0:c44f0314d6ec 93 The packet can not be longer than MTU size and CC3000 does not support
frankvnk 0:c44f0314d6ec 94 fragmentation. Note that the same buffer is used for transmission of the data
frankvnk 0:c44f0314d6ec 95 and commands. That is why the minimum is defined.
frankvnk 0:c44f0314d6ec 96 The calculation for the actual size of buffer for transmission is:
frankvnk 0:c44f0314d6ec 97 Given the maximal data size MAX_DATA, the required buffer is:
frankvnk 0:c44f0314d6ec 98 Using Sendto():
frankvnk 0:c44f0314d6ec 99
frankvnk 0:c44f0314d6ec 100 max(CC3000_MINIMAL_TX_SIZE, MAX_DATA + SPI_HEADER_SIZE
frankvnk 0:c44f0314d6ec 101 + SOCKET_SENDTO_PARAMS_LEN + SIMPLE_LINK_HCI_DATA_HEADER_SIZE + 1)
frankvnk 0:c44f0314d6ec 102
frankvnk 0:c44f0314d6ec 103 Using Send():
frankvnk 0:c44f0314d6ec 104
frankvnk 0:c44f0314d6ec 105 max(CC3000_MINIMAL_TX_SIZE, MAX_DATA + SPI_HEADER_SIZE
frankvnk 0:c44f0314d6ec 106 + HCI_CMND_SEND_ARG_LENGTH + SIMPLE_LINK_HCI_DATA_HEADER_SIZE + 1)
frankvnk 0:c44f0314d6ec 107
frankvnk 0:c44f0314d6ec 108 The 1 is used for the overrun detection */
frankvnk 0:c44f0314d6ec 109
frankvnk 4:d8255a5aad46 110 #define CC3000_MINIMAL_TX_SIZE (118 + 1)
frankvnk 0:c44f0314d6ec 111 #define CC3000_MAXIMAL_TX_SIZE (1519 + 1)
frankvnk 0:c44f0314d6ec 112
frankvnk 1:bbcaf0b2f367 113 //TX and RX buffer size - allow to receive and transmit maximum data at lengh 8.
frankvnk 0:c44f0314d6ec 114 #ifdef CC3000_TINY_DRIVER
frankvnk 0:c44f0314d6ec 115 #define TINY_CC3000_MAXIMAL_RX_SIZE 44
frankvnk 0:c44f0314d6ec 116 #define TINY_CC3000_MAXIMAL_TX_SIZE 59
frankvnk 0:c44f0314d6ec 117 #endif
frankvnk 0:c44f0314d6ec 118
frankvnk 0:c44f0314d6ec 119 /*In order to determine your preferred buffer size,
frankvnk 0:c44f0314d6ec 120 change CC3000_MAXIMAL_RX_SIZE and CC3000_MAXIMAL_TX_SIZE to a value between
frankvnk 0:c44f0314d6ec 121 the minimal and maximal specified above.
frankvnk 0:c44f0314d6ec 122 Note that the buffers are allocated by SPI.
frankvnk 0:c44f0314d6ec 123 */
frankvnk 0:c44f0314d6ec 124
frankvnk 0:c44f0314d6ec 125 #ifndef CC3000_TINY_DRIVER
frankvnk 0:c44f0314d6ec 126
frankvnk 0:c44f0314d6ec 127 #define CC3000_RX_BUFFER_SIZE (CC3000_MAXIMAL_RX_SIZE)
frankvnk 0:c44f0314d6ec 128 #define CC3000_TX_BUFFER_SIZE (CC3000_MAXIMAL_TX_SIZE)
frankvnk 1:bbcaf0b2f367 129 #define SP_PORTION_SIZE 512
frankvnk 0:c44f0314d6ec 130
frankvnk 1:bbcaf0b2f367 131 //TINY DRIVER: We use smaller rx and tx buffers in order to minimize RAM consumption
frankvnk 0:c44f0314d6ec 132 #else
frankvnk 0:c44f0314d6ec 133 #define CC3000_RX_BUFFER_SIZE (TINY_CC3000_MAXIMAL_RX_SIZE)
frankvnk 0:c44f0314d6ec 134 #define CC3000_TX_BUFFER_SIZE (TINY_CC3000_MAXIMAL_TX_SIZE)
frankvnk 1:bbcaf0b2f367 135 #define SP_PORTION_SIZE 32
frankvnk 0:c44f0314d6ec 136
frankvnk 0:c44f0314d6ec 137 #endif
frankvnk 0:c44f0314d6ec 138 //*****************************************************************************
frankvnk 0:c44f0314d6ec 139 // Compound Types
frankvnk 0:c44f0314d6ec 140 //*****************************************************************************
frankvnk 0:c44f0314d6ec 141 typedef struct timeval timeval;
frankvnk 0:c44f0314d6ec 142
frankvnk 0:c44f0314d6ec 143 struct timeval
frankvnk 0:c44f0314d6ec 144 {
frankvnk 4:d8255a5aad46 145 long tv_sec; /* seconds */
frankvnk 4:d8255a5aad46 146 long tv_usec; /* microseconds */
frankvnk 0:c44f0314d6ec 147 };
frankvnk 0:c44f0314d6ec 148
frankvnk 0:c44f0314d6ec 149 typedef char *(*tFWPatches)(unsigned long *usLength);
frankvnk 0:c44f0314d6ec 150 typedef char *(*tDriverPatches)(unsigned long *usLength);
frankvnk 0:c44f0314d6ec 151 typedef char *(*tBootLoaderPatches)(unsigned long *usLength);
frankvnk 0:c44f0314d6ec 152 typedef void (*tWlanCB)(long event_type, char * data, unsigned char length );
frankvnk 0:c44f0314d6ec 153 typedef long (*tWlanReadInteruptPin)(void);
frankvnk 0:c44f0314d6ec 154 typedef void (*tWlanInterruptEnable)(void);
frankvnk 0:c44f0314d6ec 155 typedef void (*tWlanInterruptDisable)(void);
frankvnk 0:c44f0314d6ec 156 typedef void (*tWriteWlanPin)(unsigned char val);
frankvnk 0:c44f0314d6ec 157
frankvnk 0:c44f0314d6ec 158 typedef struct
frankvnk 0:c44f0314d6ec 159 {
frankvnk 1:bbcaf0b2f367 160 unsigned short usRxEventOpcode;
frankvnk 1:bbcaf0b2f367 161 unsigned short usEventOrDataReceived;
frankvnk 1:bbcaf0b2f367 162 unsigned char *pucReceivedData;
frankvnk 1:bbcaf0b2f367 163 unsigned char *pucTxCommandBuffer;
frankvnk 1:bbcaf0b2f367 164 tFWPatches sFWPatches;
frankvnk 1:bbcaf0b2f367 165 tDriverPatches sDriverPatches;
frankvnk 1:bbcaf0b2f367 166 tBootLoaderPatches sBootLoaderPatches;
frankvnk 1:bbcaf0b2f367 167 tWlanCB sWlanCB;
frankvnk 0:c44f0314d6ec 168 tWlanReadInteruptPin ReadWlanInterruptPin;
frankvnk 0:c44f0314d6ec 169 tWlanInterruptEnable WlanInterruptEnable;
frankvnk 0:c44f0314d6ec 170 tWlanInterruptDisable WlanInterruptDisable;
frankvnk 0:c44f0314d6ec 171 tWriteWlanPin WriteWlanPin;
frankvnk 1:bbcaf0b2f367 172 signed long slTransmitDataError;
frankvnk 1:bbcaf0b2f367 173 unsigned short usNumberOfFreeBuffers;
frankvnk 1:bbcaf0b2f367 174 unsigned short usSlBufferLength;
frankvnk 1:bbcaf0b2f367 175 unsigned short usBufferSize;
frankvnk 1:bbcaf0b2f367 176 unsigned short usRxDataPending;
frankvnk 1:bbcaf0b2f367 177 unsigned long NumberOfSentPackets;
frankvnk 1:bbcaf0b2f367 178 unsigned long NumberOfReleasedPackets;
frankvnk 1:bbcaf0b2f367 179 unsigned char InformHostOnTxComplete;
frankvnk 0:c44f0314d6ec 180 }sSimplLinkInformation;
frankvnk 0:c44f0314d6ec 181
frankvnk 0:c44f0314d6ec 182 extern volatile sSimplLinkInformation tSLInformation;
frankvnk 0:c44f0314d6ec 183
frankvnk 0:c44f0314d6ec 184
frankvnk 0:c44f0314d6ec 185 //*****************************************************************************
frankvnk 0:c44f0314d6ec 186 // Prototypes for the APIs.
frankvnk 0:c44f0314d6ec 187 //*****************************************************************************
frankvnk 0:c44f0314d6ec 188
frankvnk 4:d8255a5aad46 189 /**
frankvnk 4:d8255a5aad46 190 * Wait for event, pass it to the hci_event_handler and update the event opcode in a global variable.
frankvnk 4:d8255a5aad46 191 * @param usOpcode command operation code
frankvnk 4:d8255a5aad46 192 * @param pRetParams command return parameters
frankvnk 4:d8255a5aad46 193 * @return none
frankvnk 4:d8255a5aad46 194 */
frankvnk 0:c44f0314d6ec 195 extern void SimpleLinkWaitEvent(unsigned short usOpcode, void *pRetParams);
frankvnk 0:c44f0314d6ec 196
frankvnk 4:d8255a5aad46 197 /**
frankvnk 4:d8255a5aad46 198 * Wait for data, pass it to the hci_event_handler and update in a global variable that there is data to read.
frankvnk 4:d8255a5aad46 199 * @param pBuf data buffer
frankvnk 4:d8255a5aad46 200 * @param from from information
frankvnk 4:d8255a5aad46 201 * @param fromlen from information length
frankvnk 4:d8255a5aad46 202 * @return none
frankvnk 4:d8255a5aad46 203 */
frankvnk 0:c44f0314d6ec 204 extern void SimpleLinkWaitData(unsigned char *pBuf, unsigned char *from, unsigned char *fromlen);
frankvnk 0:c44f0314d6ec 205
frankvnk 4:d8255a5aad46 206 /**
frankvnk 4:d8255a5aad46 207 * Copy 32 bit to stream while converting to little endian format.
frankvnk 4:d8255a5aad46 208 * @param p pointer to the new stream
frankvnk 4:d8255a5aad46 209 * @param u32 pointer to the 32 bit
frankvnk 4:d8255a5aad46 210 * @return pointer to the new stream
frankvnk 4:d8255a5aad46 211 */
frankvnk 0:c44f0314d6ec 212 extern unsigned char* UINT32_TO_STREAM_f (unsigned char *p, unsigned long u32);
frankvnk 0:c44f0314d6ec 213
frankvnk 4:d8255a5aad46 214 /**
frankvnk 4:d8255a5aad46 215 * Copy 16 bit to stream while converting to little endian format.
frankvnk 4:d8255a5aad46 216 * @param p pointer to the new stream
frankvnk 4:d8255a5aad46 217 * @param u32 pointer to the 16 bit
frankvnk 4:d8255a5aad46 218 * @return pointer to the new stream
frankvnk 4:d8255a5aad46 219 */
frankvnk 0:c44f0314d6ec 220 extern unsigned char* UINT16_TO_STREAM_f (unsigned char *p, unsigned short u16);
frankvnk 0:c44f0314d6ec 221
frankvnk 4:d8255a5aad46 222 /**
frankvnk 4:d8255a5aad46 223 * Copy received stream to 16 bit in little endian format.
frankvnk 4:d8255a5aad46 224 * @param p pointer to the stream
frankvnk 4:d8255a5aad46 225 * @param offset offset in the stream
frankvnk 4:d8255a5aad46 226 * @return pointer to the new 16 bit
frankvnk 4:d8255a5aad46 227 */
frankvnk 0:c44f0314d6ec 228 extern unsigned short STREAM_TO_UINT16_f(char* p, unsigned short offset);
frankvnk 0:c44f0314d6ec 229
frankvnk 4:d8255a5aad46 230 /**
frankvnk 4:d8255a5aad46 231 * Copy received stream to 32 bit in little endian format.
frankvnk 4:d8255a5aad46 232 * @param p pointer to the stream
frankvnk 4:d8255a5aad46 233 * @param offset offset in the stream
frankvnk 4:d8255a5aad46 234 * @return pointer to the new 32 bit
frankvnk 4:d8255a5aad46 235 */
frankvnk 0:c44f0314d6ec 236 extern unsigned long STREAM_TO_UINT32_f(char* p, unsigned short offset);
frankvnk 0:c44f0314d6ec 237
frankvnk 0:c44f0314d6ec 238
frankvnk 0:c44f0314d6ec 239 //*****************************************************************************
frankvnk 0:c44f0314d6ec 240 // COMMON MACROs
frankvnk 0:c44f0314d6ec 241 //*****************************************************************************
frankvnk 0:c44f0314d6ec 242
frankvnk 0:c44f0314d6ec 243
frankvnk 4:d8255a5aad46 244 //Copy 8 bit to stream while converting to little endian format.
frankvnk 0:c44f0314d6ec 245 #define UINT8_TO_STREAM(_p, _val) {*(_p)++ = (_val);}
frankvnk 4:d8255a5aad46 246 //Copy 16 bit to stream while converting to little endian format.
frankvnk 0:c44f0314d6ec 247 #define UINT16_TO_STREAM(_p, _u16) (UINT16_TO_STREAM_f(_p, _u16))
frankvnk 4:d8255a5aad46 248 //Copy 32 bit to stream while converting to little endian format.
frankvnk 0:c44f0314d6ec 249 #define UINT32_TO_STREAM(_p, _u32) (UINT32_TO_STREAM_f(_p, _u32))
frankvnk 4:d8255a5aad46 250 //Copy a specified value length bits (l) to stream while converting to little endian format.
frankvnk 0:c44f0314d6ec 251 #define ARRAY_TO_STREAM(p, a, l) {register short _i; for (_i = 0; _i < l; _i++) *(p)++ = ((unsigned char *) a)[_i];}
frankvnk 4:d8255a5aad46 252 //Copy received stream to 8 bit in little endian format.
frankvnk 0:c44f0314d6ec 253 #define STREAM_TO_UINT8(_p, _offset, _u8) {_u8 = (unsigned char)(*(_p + _offset));}
frankvnk 4:d8255a5aad46 254 //Copy received stream to 16 bit in little endian format.
frankvnk 0:c44f0314d6ec 255 #define STREAM_TO_UINT16(_p, _offset, _u16) {_u16 = STREAM_TO_UINT16_f(_p, _offset);}
frankvnk 4:d8255a5aad46 256 //Copy received stream to 32 bit in little endian format.
frankvnk 0:c44f0314d6ec 257 #define STREAM_TO_UINT32(_p, _offset, _u32) {_u32 = STREAM_TO_UINT32_f(_p, _offset);}
frankvnk 0:c44f0314d6ec 258 #define STREAM_TO_STREAM(p, a, l) {register short _i; for (_i = 0; _i < l; _i++) *(a)++= ((unsigned char *) p)[_i];}
frankvnk 0:c44f0314d6ec 259
frankvnk 0:c44f0314d6ec 260 #ifdef __cplusplus
frankvnk 0:c44f0314d6ec 261 }
frankvnk 0:c44f0314d6ec 262 #endif // __cplusplus
frankvnk 0:c44f0314d6ec 263
frankvnk 0:c44f0314d6ec 264 #endif // __COMMON_H__
frankvnk 0:c44f0314d6ec 265