Saharsh Bishnoi
/
UBRCANReader
UBR CAN
Fork of CAN_bus_reader_pub by
Revision 1:b57b77b29c7e, committed 2013-11-17
- Comitter:
- saharshbishnoi
- Date:
- Sun Nov 17 15:20:57 2013 +0000
- Parent:
- 0:78752077cc25
- Commit message:
- UBR Can Reader
Changed in this revision
diff -r 78752077cc25 -r b57b77b29c7e FATFileSystem.lib --- a/FATFileSystem.lib Wed Nov 09 04:59:01 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/mbed_unsupported/code/fatfilesystem/ \ No newline at end of file
diff -r 78752077cc25 -r b57b77b29c7e SDFileSystem.cpp --- a/SDFileSystem.cpp Wed Nov 09 04:59:01 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,457 +0,0 @@ -/* mbed SDFileSystem Library, for providing file access to SD cards - * Copyright (c) 2008-2010, sford - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -/* Introduction - * ------------ - * SD and MMC cards support a number of interfaces, but common to them all - * is one based on SPI. This is the one I'm implmenting because it means - * it is much more portable even though not so performant, and we already - * have the mbed SPI Interface! - * - * The main reference I'm using is Chapter 7, "SPI Mode" of: - * http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf - * - * SPI Startup - * ----------- - * The SD card powers up in SD mode. The SPI interface mode is selected by - * asserting CS low and sending the reset command (CMD0). The card will - * respond with a (R1) response. - * - * CMD8 is optionally sent to determine the voltage range supported, and - * indirectly determine whether it is a version 1.x SD/non-SD card or - * version 2.x. I'll just ignore this for now. - * - * ACMD41 is repeatedly issued to initialise the card, until "in idle" - * (bit 0) of the R1 response goes to '0', indicating it is initialised. - * - * You should also indicate whether the host supports High Capicity cards, - * and check whether the card is high capacity - i'll also ignore this - * - * SPI Protocol - * ------------ - * The SD SPI protocol is based on transactions made up of 8-bit words, with - * the host starting every bus transaction by asserting the CS signal low. The - * card always responds to commands, data blocks and errors. - * - * The protocol supports a CRC, but by default it is off (except for the - * first reset CMD0, where the CRC can just be pre-calculated, and CMD8) - * I'll leave the CRC off I think! - * - * Standard capacity cards have variable data block sizes, whereas High - * Capacity cards fix the size of data block to 512 bytes. I'll therefore - * just always use the Standard Capacity cards with a block size of 512 bytes. - * This is set with CMD16. - * - * You can read and write single blocks (CMD17, CMD25) or multiple blocks - * (CMD18, CMD25). For simplicity, I'll just use single block accesses. When - * the card gets a read command, it responds with a response token, and then - * a data token or an error. - * - * SPI Command Format - * ------------------ - * Commands are 6-bytes long, containing the command, 32-bit argument, and CRC. - * - * +---------------+------------+------------+-----------+----------+--------------+ - * | 01 | cmd[5:0] | arg[31:24] | arg[23:16] | arg[15:8] | arg[7:0] | crc[6:0] | 1 | - * +---------------+------------+------------+-----------+----------+--------------+ - * - * As I'm not using CRC, I can fix that byte to what is needed for CMD0 (0x95) - * - * All Application Specific commands shall be preceded with APP_CMD (CMD55). - * - * SPI Response Format - * ------------------- - * The main response format (R1) is a status byte (normally zero). Key flags: - * idle - 1 if the card is in an idle state/initialising - * cmd - 1 if an illegal command code was detected - * - * +-------------------------------------------------+ - * R1 | 0 | arg | addr | seq | crc | cmd | erase | idle | - * +-------------------------------------------------+ - * - * R1b is the same, except it is followed by a busy signal (zeros) until - * the first non-zero byte when it is ready again. - * - * Data Response Token - * ------------------- - * Every data block written to the card is acknowledged by a byte - * response token - * - * +----------------------+ - * | xxx | 0 | status | 1 | - * +----------------------+ - * 010 - OK! - * 101 - CRC Error - * 110 - Write Error - * - * Single Block Read and Write - * --------------------------- - * - * Block transfers have a byte header, followed by the data, followed - * by a 16-bit CRC. In our case, the data will always be 512 bytes. - * - * +------+---------+---------+- - - -+---------+-----------+----------+ - * | 0xFE | data[0] | data[1] | | data[n] | crc[15:8] | crc[7:0] | - * +------+---------+---------+- - - -+---------+-----------+----------+ - */ - -#include "SDFileSystem.h" - -#define SD_COMMAND_TIMEOUT 5000 - -SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name) : - FATFileSystem(name), _spi(mosi, miso, sclk), _cs(cs) { - _cs = 1; -} - -#define R1_IDLE_STATE (1 << 0) -#define R1_ERASE_RESET (1 << 1) -#define R1_ILLEGAL_COMMAND (1 << 2) -#define R1_COM_CRC_ERROR (1 << 3) -#define R1_ERASE_SEQUENCE_ERROR (1 << 4) -#define R1_ADDRESS_ERROR (1 << 5) -#define R1_PARAMETER_ERROR (1 << 6) - -// Types -// - v1.x Standard Capacity -// - v2.x Standard Capacity -// - v2.x High Capacity -// - Not recognised as an SD Card - -#define SDCARD_FAIL 0 -#define SDCARD_V1 1 -#define SDCARD_V2 2 -#define SDCARD_V2HC 3 - -int SDFileSystem::initialise_card() { - // Set to 100kHz for initialisation, and clock card with cs = 1 - _spi.frequency(100000); - _cs = 1; - for(int i=0; i<16; i++) { - _spi.write(0xFF); - } - - // send CMD0, should return with all zeros except IDLE STATE set (bit 0) - if(_cmd(0, 0) != R1_IDLE_STATE) { - fprintf(stderr, "No disk, or could not put SD card in to SPI idle state\n"); - return SDCARD_FAIL; - } - - // send CMD8 to determine whther it is ver 2.x - int r = _cmd8(); - if(r == R1_IDLE_STATE) { - return initialise_card_v2(); - } else if(r == (R1_IDLE_STATE | R1_ILLEGAL_COMMAND)) { - return initialise_card_v1(); - } else { - fprintf(stderr, "Not in idle state after sending CMD8 (not an SD card?)\n"); - return SDCARD_FAIL; - } -} - -int SDFileSystem::initialise_card_v1() { - for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { - _cmd(55, 0); - if(_cmd(41, 0) == 0) { - return SDCARD_V1; - } - } - - fprintf(stderr, "Timeout waiting for v1.x card\n"); - return SDCARD_FAIL; -} - -int SDFileSystem::initialise_card_v2() { - - for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { - _cmd(55, 0); - if(_cmd(41, 0) == 0) { - _cmd58(); - return SDCARD_V2; - } - } - - fprintf(stderr, "Timeout waiting for v2.x card\n"); - return SDCARD_FAIL; -} - -int SDFileSystem::disk_initialize() { - - int i = initialise_card(); -// printf("init card = %d\n", i); -// printf("OK\n"); - - _sectors = _sd_sectors(); - - // Set block length to 512 (CMD16) - if(_cmd(16, 512) != 0) { - fprintf(stderr, "Set 512-byte block timed out\n"); - return 1; - } - - _spi.frequency(1000000); // Set to 1MHz for data transfer - return 0; -} - -int SDFileSystem::disk_write(const char *buffer, int block_number) { - // set write address for single block (CMD24) - if(_cmd(24, block_number * 512) != 0) { - return 1; - } - - // send the data block - _write(buffer, 512); - return 0; -} - -int SDFileSystem::disk_read(char *buffer, int block_number) { - // set read address for single block (CMD17) - if(_cmd(17, block_number * 512) != 0) { - return 1; - } - - // receive the data - _read(buffer, 512); - return 0; -} - -int SDFileSystem::disk_status() { return 0; } -int SDFileSystem::disk_sync() { return 0; } -int SDFileSystem::disk_sectors() { return _sectors; } - -// PRIVATE FUNCTIONS - -int SDFileSystem::_cmd(int cmd, int arg) { - _cs = 0; - - // send a command - _spi.write(0x40 | cmd); - _spi.write(arg >> 24); - _spi.write(arg >> 16); - _spi.write(arg >> 8); - _spi.write(arg >> 0); - _spi.write(0x95); - - // wait for the repsonse (response[7] == 0) - for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { - int response = _spi.write(0xFF); - if(!(response & 0x80)) { - _cs = 1; - _spi.write(0xFF); - return response; - } - } - _cs = 1; - _spi.write(0xFF); - return -1; // timeout -} -int SDFileSystem::_cmdx(int cmd, int arg) { - _cs = 0; - - // send a command - _spi.write(0x40 | cmd); - _spi.write(arg >> 24); - _spi.write(arg >> 16); - _spi.write(arg >> 8); - _spi.write(arg >> 0); - _spi.write(0x95); - - // wait for the repsonse (response[7] == 0) - for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { - int response = _spi.write(0xFF); - if(!(response & 0x80)) { - return response; - } - } - _cs = 1; - _spi.write(0xFF); - return -1; // timeout -} - - -int SDFileSystem::_cmd58() { - _cs = 0; - int arg = 0; - - // send a command - _spi.write(0x40 | 58); - _spi.write(arg >> 24); - _spi.write(arg >> 16); - _spi.write(arg >> 8); - _spi.write(arg >> 0); - _spi.write(0x95); - - // wait for the repsonse (response[7] == 0) - for(int i=0; i<SD_COMMAND_TIMEOUT; i++) { - int response = _spi.write(0xFF); - if(!(response & 0x80)) { - int ocr = _spi.write(0xFF) << 24; - ocr |= _spi.write(0xFF) << 16; - ocr |= _spi.write(0xFF) << 8; - ocr |= _spi.write(0xFF) << 0; -// printf("OCR = 0x%08X\n", ocr); - _cs = 1; - _spi.write(0xFF); - return response; - } - } - _cs = 1; - _spi.write(0xFF); - return -1; // timeout -} - -int SDFileSystem::_cmd8() { - _cs = 0; - - // send a command - _spi.write(0x40 | 8); // CMD8 - _spi.write(0x00); // reserved - _spi.write(0x00); // reserved - _spi.write(0x01); // 3.3v - _spi.write(0xAA); // check pattern - _spi.write(0x87); // crc - - // wait for the repsonse (response[7] == 0) - for(int i=0; i<SD_COMMAND_TIMEOUT * 1000; i++) { - char response[5]; - response[0] = _spi.write(0xFF); - if(!(response[0] & 0x80)) { - for(int j=1; j<5; j++) { - response[i] = _spi.write(0xFF); - } - _cs = 1; - _spi.write(0xFF); - return response[0]; - } - } - _cs = 1; - _spi.write(0xFF); - return -1; // timeout -} - -int SDFileSystem::_read(char *buffer, int length) { - _cs = 0; - - // read until start byte (0xFF) - while(_spi.write(0xFF) != 0xFE); - - // read data - for(int i=0; i<length; i++) { - buffer[i] = _spi.write(0xFF); - } - _spi.write(0xFF); // checksum - _spi.write(0xFF); - - _cs = 1; - _spi.write(0xFF); - return 0; -} - -int SDFileSystem::_write(const char *buffer, int length) { - _cs = 0; - - // indicate start of block - _spi.write(0xFE); - - // write the data - for(int i=0; i<length; i++) { - _spi.write(buffer[i]); - } - - // write the checksum - _spi.write(0xFF); - _spi.write(0xFF); - - // check the repsonse token - if((_spi.write(0xFF) & 0x1F) != 0x05) { - _cs = 1; - _spi.write(0xFF); - return 1; - } - - // wait for write to finish - while(_spi.write(0xFF) == 0); - - _cs = 1; - _spi.write(0xFF); - return 0; -} - -static int ext_bits(char *data, int msb, int lsb) { - int bits = 0; - int size = 1 + msb - lsb; - for(int i=0; i<size; i++) { - int position = lsb + i; - int byte = 15 - (position >> 3); - int bit = position & 0x7; - int value = (data[byte] >> bit) & 1; - bits |= value << i; - } - return bits; -} - -int SDFileSystem::_sd_sectors() { - - // CMD9, Response R2 (R1 byte + 16-byte block read) - if(_cmdx(9, 0) != 0) { - fprintf(stderr, "Didn't get a response from the disk\n"); - return 0; - } - - char csd[16]; - if(_read(csd, 16) != 0) { - fprintf(stderr, "Couldn't read csd response from disk\n"); - return 0; - } - - // csd_structure : csd[127:126] - // c_size : csd[73:62] - // c_size_mult : csd[49:47] - // read_bl_len : csd[83:80] - the *maximum* read block length - - int csd_structure = ext_bits(csd, 127, 126); - int c_size = ext_bits(csd, 73, 62); - int c_size_mult = ext_bits(csd, 49, 47); - int read_bl_len = ext_bits(csd, 83, 80); - -// printf("CSD_STRUCT = %d\n", csd_structure); - - if(csd_structure != 0) { - fprintf(stderr, "This disk tastes funny! I only know about type 0 CSD structures\n"); - return 0; - } - - // memory capacity = BLOCKNR * BLOCK_LEN - // where - // BLOCKNR = (C_SIZE+1) * MULT - // MULT = 2^(C_SIZE_MULT+2) (C_SIZE_MULT < 8) - // BLOCK_LEN = 2^READ_BL_LEN, (READ_BL_LEN < 12) - - int block_len = 1 << read_bl_len; - int mult = 1 << (c_size_mult + 2); - int blocknr = (c_size + 1) * mult; - int capacity = blocknr * block_len; - - int blocks = capacity / 512; - - return blocks; -}
diff -r 78752077cc25 -r b57b77b29c7e SDFileSystem.h --- a/SDFileSystem.h Wed Nov 09 04:59:01 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,81 +0,0 @@ -/* mbed SDFileSystem Library, for providing file access to SD cards - * Copyright (c) 2008-2010, sford - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#ifndef MBED_SDFILESYSTEM_H -#define MBED_SDFILESYSTEM_H - -#include "mbed.h" -#include "FATFileSystem.h" - -/** Access the filesystem on an SD Card using SPI - * - * @code - * #include "mbed.h" - * #include "SDFileSystem.h" - * - * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs - * - * int main() { - * FILE *fp = fopen("/sd/myfile.txt", "w"); - * fprintf(fp, "Hello World!\n"); - * fclose(fp); - * } - */ -class SDFileSystem : public FATFileSystem { -public: - - /** Create the File System for accessing an SD Card using SPI - * - * @param mosi SPI mosi pin connected to SD Card - * @param miso SPI miso pin conencted to SD Card - * @param sclk SPI sclk pin connected to SD Card - * @param cs DigitalOut pin used as SD Card chip select - * @param name The name used to access the virtual filesystem - */ - SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); - virtual int disk_initialize(); - virtual int disk_write(const char *buffer, int block_number); - virtual int disk_read(char *buffer, int block_number); - virtual int disk_status(); - virtual int disk_sync(); - virtual int disk_sectors(); - -protected: - - int _cmd(int cmd, int arg); - int _cmdx(int cmd, int arg); - int _cmd8(); - int _cmd58(); - int initialise_card(); - int initialise_card_v1(); - int initialise_card_v2(); - - int _read(char *buffer, int length); - int _write(const char *buffer, int length); - int _sd_sectors(); - int _sectors; - - SPI _spi; - DigitalOut _cs; -}; - -#endif
diff -r 78752077cc25 -r b57b77b29c7e TextLCD.lib --- a/TextLCD.lib Wed Nov 09 04:59:01 2011 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/simon/code/TextLCD/#44f34c09bd37
diff -r 78752077cc25 -r b57b77b29c7e ecu_reader.h --- a/ecu_reader.h Wed Nov 09 04:59:01 2011 +0000 +++ b/ecu_reader.h Sun Nov 17 15:20:57 2013 +0000 @@ -4,6 +4,7 @@ #define CANSPEED_125 125000 // CAN speed at 125 kbps #define CANSPEED_250 250000 // CAN speed at 250 kbps #define CANSPEED_500 500000 // CAN speed at 500 kbps +#define CANSPEED_1M 1000000 // CAN speed at 1Mbps /* Details from http://en.wikipedia.org/wiki/OBD-II_PIDs */ #define ENGINE_COOLANT_TEMP 0x05
diff -r 78752077cc25 -r b57b77b29c7e globals.cpp --- a/globals.cpp Wed Nov 09 04:59:01 2011 +0000 +++ b/globals.cpp Sun Nov 17 15:20:57 2013 +0000 @@ -8,5 +8,5 @@ DigitalOut led4 (LED4); // We use can on mbed pins 29(CAN_TXD) and 30(CAN_RXD). -CAN can2(p9, p10); +CAN can2(p30, p29); CANMessage can_MsgRx; \ No newline at end of file
diff -r 78752077cc25 -r b57b77b29c7e main.cpp --- a/main.cpp Wed Nov 09 04:59:01 2011 +0000 +++ b/main.cpp Sun Nov 17 15:20:57 2013 +0000 @@ -1,76 +1,15 @@ -// reference : http://mbed.org/users/pangsk/programs/ecu_reader/ -// Only read CAN-bus data, (not send any data) -// v1.0 - -/* - -mbed Can-Bus demo - -This program is to demonstrate the CAN-bus capability of the mbed module. - -http://www.skpang.co.uk/catalog/product_info.php?products_id=741 - -v1.0 July 2010 - -******************************************************************************** - -WARNING: Use at your own risk, sadly this software comes with no guarantees. -This software is provided 'free' and in good faith, but the author does not -accept liability for any damage arising from its use. - -******************************************************************************** - - -*/ - #include "mbed.h" #include "ecu_reader.h" #include "globals.h" -#include "TextLCD.h" -#include "SDFileSystem.h" - -//GPS gps(p28, p27); -TextLCD lcd(p24, p26, p27, p28, p29, p30); // rs, e, d0, d1, d2, d3, for starboard orange -SDFileSystem sd(p5, p6, p7, p8, "sd"); //for starboard orange -/*DigitalIn click(p21); // Joystick inputs -DigitalIn right(p22); -DigitalIn down(p23); -DigitalIn left(p24); -DigitalIn up(p25);*/ +ecu_reader obdii(CANSPEED_1M); //Create object and set CAN speed -ecu_reader obdii(CANSPEED_500); //Create object and set CAN speed -//void gps_demo(void); -void sd_demo(void); //Timer CANTimer; Timer CANTimer2; int main() { - -// char buffer[20]; - - lcd.locate(0,0); // Set LCD cursor position - lcd.printf("CAN-Bus demo"); - - lcd.locate(0,1); - lcd.printf("www.skpang.co.uk"); - pc.baud(460800); - pc.printf("\n\rCAN-bus demo..."); - - wait(3); - lcd.cls(); - - -/* while(1) // Wait until option is selected by the joystick - { - - if(down == 0) gps_demo(); - if(left == 0) sd_demo(); - if(up == 0) break; - - }*/ - - while(1) { // Main CAN loop + while(1) + { // Main CAN loop led2 = 1; wait(0.1); led2 = 0; @@ -80,8 +19,8 @@ CANTimer2.start(); pc.printf("CANTimer.start\n"); - while (CANTimer2.read_ms() < TIMEOUT) { -// pc.printf("CANTimer.read_ms(): %dms ", CANTimer2.read_ms()); + while (CANTimer2.read_ms() < TIMEOUT) { + pc.printf("CANTimer.read_ms(): %dms ", CANTimer2.read_ms()); // http://mbed.org/cookbook/OBDII-Can-Bus @@ -94,8 +33,8 @@ //print length of message pc.printf("Hex: can_MsgRx.len: %x\n\r", can_MsgRx.len); - //print data[2] - //pc.printf("can_MsgRx.data[2]: %x\n\r", can_MsgRx.data[2]); + //print data + //pc.printf("can_MsgRx.data[2]: %x\n\r", can_MsgRx.data[5]); for (int i = 0; i < (int)can_MsgRx.len; i++) { pc.printf("can_MsgRx.data[%d]: %x\n\r", i, can_MsgRx.data[i]); @@ -103,93 +42,5 @@ } } } - - - - - - -/* if(obdii.request(ENGINE_RPM,buffer) == 1) // Get engine rpm and display on LCD - { - lcd.locate(0,0); - lcd.printf(buffer); - } - - if(obdii.request(ENGINE_COOLANT_TEMP,buffer) == 1) - { - lcd.locate(9,0); - lcd.printf(buffer); - } - - if(obdii.request(VEHICLE_SPEED,buffer) == 1) - { - lcd.locate(0,1); - lcd.printf(buffer); - } - - if(obdii.request(THROTTLE,buffer) ==1 ) - { - lcd.locate(9,1); - lcd.printf(buffer); - } -*/ } - -/*void gps_demo(void) -{ - lcd.cls(); - lcd.printf("GPS demo"); - lcd.locate(0,1); - lcd.printf("Waiting for lock"); - - wait(3); - lcd.cls(); - - while(1) - { - if(gps.sample()) { - lcd.cls(); - lcd.printf("Long:%f", gps.longitude); - lcd.locate(0,1); - lcd.printf("Lat:%f", gps.latitude); - pc.printf("I'm at %f, %f\n", gps.longitude, gps.latitude); - } else { - pc.printf("Oh Dear! No lock :(\n"); - lcd.cls(); - lcd.printf("Waiting for lock"); - - } - } - -}*/ - -/* -void sd_demo(void) -{ - lcd.cls(); - lcd.printf("SD demo"); - wait(2); - lcd.cls(); - - FILE *fp = fopen("/sd/sdtest2.txt", "w"); - if(fp == NULL) { - lcd.cls(); - lcd.printf("Could not open file for write\n"); - } - fprintf(fp, "Hello fun SD Card World! testing 1234"); - fclose(fp); - lcd.locate(0,1); - lcd.printf("Writtern to SD card"); - - while(1) - { - led2 = 1; - wait(0.1); - led2 = 0; - wait(0.1); - - } - -} -*/ \ No newline at end of file