Sergeh Vartanian
/
ecu_reader
Final Report
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Revision 6:dae9630af6e3, committed 2014-10-27
- Comitter:
- LAvtec818
- Date:
- Mon Oct 27 02:46:55 2014 +0000
- Parent:
- 5:46a6a3e36e05
- Commit message:
- report
Changed in this revision
--- a/FATFileSystem.lib Tue Aug 28 13:16:46 2012 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/mbed_unsupported/code/FatFileSystem/#333d6e93e58f
--- a/GPS.lib Tue Aug 28 13:16:46 2012 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/pangsk/code/GPS/#0f423a982334
--- a/SDFileSystem.cpp Tue Aug 28 13:16:46 2012 +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; -}
--- a/SDFileSystem.h Tue Aug 28 13:16:46 2012 +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
--- a/TextLCD.lib Tue Aug 28 13:16:46 2012 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/pangsk/code/TextLCD/#ec079a141883
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD/TextLCD.cpp Mon Oct 27 02:46:55 2014 +0000 @@ -0,0 +1,165 @@ +/* mbed TextLCD Library, for a 4-bit LCD based on HD44780 + * Copyright (c) 2007-2010, sford, http://mbed.org + * + * 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. + */ + +#include "TextLCD.h" +#include "mbed.h" + + +TextLCD::TextLCD(PinName rs, PinName rw, PinName e, PinName d4, PinName d5, + PinName d6, PinName d7, LCDType type) : _rs(rs), _rw(rw), + _e(e), _d(d4, d5, d6, d7), + _type(type) { + + _rw = 0; + _e = 1; + _rs = 0; // command mode + + wait(0.015); // Wait 15ms to ensure powered up + + // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus) + for (int i=0; i<3; i++) { + writeNibble(0x3); + wait(0.00164); // this command takes 1.64ms, so wait for it + } + + writeNibble(0x2); // 4-bit mode + + writeCommand(0x28); // Function set 001 BW N F - - + writeCommand(0x0C); + writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes + cls(); +} + +void TextLCD::character(int column, int row, int c) { + int a = address(column, row); + writeCommand(a); + writeData(c); +} + +void TextLCD::cls() { + writeCommand(0x01); // cls, and set cursor to 0 + wait(0.00164f); // This command takes 1.64 ms + locate(0, 0); +} + +void TextLCD::locate(int column, int row) { + _column = column; + _row = row; +} + +int TextLCD::_putc(int value) { + if (value == '\n') { + _column = 0; + _row++; + if (_row >= rows()) { + _row = 0; + } + } else { + character(_column, _row, value); + _column++; + if (_column >= columns()) { + _column = 0; + _row++; + if (_row >= rows()) { + _row = 0; + } + } + } + return value; +} + +int TextLCD::_getc() { + return -1; +} + +void TextLCD::writeByte(int value) { + writeNibble(value >> 4); + writeNibble(value >> 0); +} + +void TextLCD::writeCommand(int command) { + _rs = 0; + writeByte(command); +} + +void TextLCD::clock(void) { + wait(0.000040f); + _e = 0; + wait(0.000040f); + _e = 1; +} + +void TextLCD::writeNibble(int data) { + _d = data; + clock(); +} + +void TextLCD::writeData(int data) { + _rs = 1; + writeByte(data); +} + +int TextLCD::address(int column, int row) { + switch (_type) { + case LCD20x4: + switch (row) { + case 0: + return 0x80 + column; + case 1: + return 0xc0 + column; + case 2: + return 0x94 + column; + case 3: + return 0xd4 + column; + } + case LCD16x2B: + return 0x80 + (row * 40) + column; + case LCD16x2: + case LCD20x2: + default: + return 0x80 + (row * 0x40) + column; + } +} + +int TextLCD::columns() { + switch (_type) { + case LCD20x4: + case LCD20x2: + return 20; + case LCD16x2: + case LCD16x2B: + default: + return 16; + } +} + +int TextLCD::rows() { + switch (_type) { + case LCD20x4: + return 4; + case LCD16x2: + case LCD16x2B: + case LCD20x2: + default: + return 2; + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD/TextLCD.h Mon Oct 27 02:46:55 2014 +0000 @@ -0,0 +1,113 @@ +/* mbed TextLCD Library, for a 4-bit LCD based on HD44780 + * Copyright (c) 2007-2010, sford, http://mbed.org + * + * 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_TEXTLCD_H +#define MBED_TEXTLCD_H + +#include "mbed.h" + +/** A TextLCD interface for driving 4-bit HD44780-based LCDs + * + * Currently supports 16x2, 20x2 and 20x4 panels + * + * @code + * #include "mbed.h" + * #include "TextLCD.h" + * + * TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d4-d7 + * + * int main() { + * lcd.printf("Hello World!\n"); + * } + * @endcode + */ +class TextLCD : public Stream { +public: + + /** LCD panel format */ + enum LCDType { + LCD16x2 /**< 16x2 LCD panel (default) */ + , LCD16x2B /**< 16x2 LCD panel alternate addressing */ + , LCD20x2 /**< 20x2 LCD panel */ + , LCD20x4 /**< 20x4 LCD panel */ + }; + + /** Create a TextLCD interface + * + * @param rs Instruction/data control line + * @param e Enable line (clock) + * @param d4-d7 Data lines for using as a 4-bit interface + * @param type Sets the panel size/addressing mode (default = LCD16x2) + */ + TextLCD(PinName rs, PinName rw, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2); + +#if DOXYGEN_ONLY + /** Write a character to the LCD + * + * @param c The character to write to the display + */ + int putc(int c); + + /** Write a formated string to the LCD + * + * @param format A printf-style format string, followed by the + * variables to use in formating the string. + */ + int printf(const char* format, ...); +#endif + + /** Locate to a screen column and row + * + * @param column The horizontal position from the left, indexed from 0 + * @param row The vertical position from the top, indexed from 0 + */ + void locate(int column, int row); + + /** Clear the screen and locate to 0,0 */ + void cls(); + + int rows(); + int columns(); + +protected: + + // Stream implementation functions + virtual int _putc(int value); + virtual int _getc(); + + int address(int column, int row); + void character(int column, int row, int c); + void writeByte(int value); + void writeCommand(int command); + void writeData(int data); + void writeNibble(int data); + void clock(void); + + DigitalOut _rs, _rw, _e; + BusOut _d; + LCDType _type; + + int _column; + int _row; +}; + +#endif
--- a/ecu_reader.cpp Tue Aug 28 13:16:46 2012 +0000 +++ b/ecu_reader.cpp Mon Oct 27 02:46:55 2014 +0000 @@ -3,7 +3,6 @@ #include "globals.h" -// Use a timer to see if things take too long Timer CANTimer; namespace mbed { @@ -46,7 +45,7 @@ if((can_MsgRx.id == PID_REPLY) && (can_MsgRx.data[2] == pid)) { switch(can_MsgRx.data[2]) - { /* Details from http://en.wikipedia.org/wiki/OBD-II_PIDs */ + { case ENGINE_RPM: // ((A*256)+B)/4 [RPM] engine_data = ((can_MsgRx.data[3]*256) + can_MsgRx.data[4])/4; sprintf(buffer,"%d rpm ",(int) engine_data); @@ -54,30 +53,42 @@ case ENGINE_COOLANT_TEMP: // A-40 [degree C] engine_data = can_MsgRx.data[3] - 40; - sprintf(buffer,"%d degC ",(int) engine_data); + sprintf(buffer,"%d degC: ",(int) engine_data); break; case VEHICLE_SPEED: // A [km] - engine_data = can_MsgRx.data[3]; - sprintf(buffer,"%d km ",(int) engine_data); + engine_data = can_MsgRx.data[3]* 0.6; + sprintf(buffer,"%d MPH: ",(int) engine_data); break; case MAF_SENSOR: // ((256*A)+B) / 100 [g/s] engine_data = ((can_MsgRx.data[3]*256) + can_MsgRx.data[4])/100; - sprintf(buffer,"%d g/s",(int) engine_data); + sprintf(buffer,"%d g/s: ",(int) engine_data); break; case O2_VOLTAGE: // A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) engine_data = can_MsgRx.data[3]*0.005; - sprintf(buffer,"%d v ",(int) engine_data); + sprintf(buffer,"%d v: ",(int) engine_data); + break; case THROTTLE: // engine_data = (can_MsgRx.data[3]*100)/255; - sprintf(buffer,"%d %% ",(int) engine_data); - + sprintf(buffer,"%d Pos: ",(int) engine_data); + + break; + + case AIR_INTAKE_TEMP: // ((256*A)+B) / 100 [g/s] + engine_data = can_MsgRx.data[3] - 40; + sprintf(buffer,"%d degC: ",(int) engine_data); + + break; + + case FUEL_PRESSURE: // ((256*A)+B) / 100 [g/s] + engine_data = (can_MsgRx.data[3] * 3) * 0.1450; + sprintf(buffer,"%d Fuel PSI: ",(int) engine_data); break; } @@ -95,4 +106,5 @@ } -} // namespace mbed \ No newline at end of file +} +
--- a/ecu_reader.h Tue Aug 28 13:16:46 2012 +0000 +++ b/ecu_reader.h Mon Oct 27 02:46:55 2014 +0000 @@ -12,9 +12,26 @@ #define MAF_SENSOR 0x10 #define THROTTLE 0x11 #define O2_VOLTAGE 0x14 +#define AIR_INTAKE_TEMP 0x0F +#define FUEL_PRESSURE 0x0A -#define PID_REQUEST 0x7DF -#define PID_REPLY 0x7E8 +#define PID_REQUEST 0x7DF //tx +#define PID_REPLY 0x7E8 //rx +#define Ext_Diag 0x7E0 //tx + +//To Filter this IDs +#define Filter1 0x1EA +#define Filter2 0x1EB +#define Filter3 0x156 +#define Filter4 0x18E +#define Filter5 0x1A6 +#define Filter6 0x13C +#define Filter7 0x158 +#define Filter8 0x1A4 +#define Filter9 0x1B0 +#define Filtera 0x255 +#define Filterb 0x1D0 +#define Filterc 0x191 namespace mbed { @@ -40,4 +57,4 @@ -#endif \ No newline at end of file +#endif
--- a/main.cpp Tue Aug 28 13:16:46 2012 +0000 +++ b/main.cpp Mon Oct 27 02:46:55 2014 +0000 @@ -1,88 +1,150 @@ -/* - -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 "GPS.h" -#include "SDFileSystem.h" - -GPS gps(p28, p27); -TextLCD lcd(p18, p19, p20, p17, p16, p15, p14); // rs, rw, e, d0, d1, d2, d3 -SDFileSystem sd(p5, p6, p7, p13, "sd"); +#include <stdio.h> +#include <string> +//#include "SDFileSystem.h" -DigitalIn click(p21); // Joystick inputs -DigitalIn right(p22); -DigitalIn down(p23); -DigitalIn left(p24); -DigitalIn up(p25); +TextLCD lcd(p26, p25, p24, p23, p22, p20, p19, TextLCD::LCD20x4);//(p18, p19, p20, p17, p16, p15, p14); // rs, rw, e, d0, d1, d2, d3 +//SDFileSystem sd(p5, p6, p7, p13, "sd"); + Serial pc(USBTX, USBRX); +DigitalIn enable(p8); + +Serial xbee1(p9, p10); //Creates a variable for serial comunication through pin 9 and 10 +DigitalOut rst1(p11); //Digital reset for the XBee, 200ns for reset ecu_reader obdii(CANSPEED_500); //Create object and set CAN speed -void gps_demo(void); -void sd_demo(void); +//void sd_demo(void); + +void Rx_interrupt() { + float rx_data[8]; + int first_byte[8]; + int second_byte[8]; + char buffer[30]; + if (can2.read(can_MsgRx)){ + //xbee1.printf("\n\rPackets Received:\n\r"); + + if((can_MsgRx.id == Filter1) || (can_MsgRx.id == Filter1) || (can_MsgRx.id == Filter2) || (can_MsgRx.id == Filter3) || (can_MsgRx.id == Filter4) || (can_MsgRx.id == Filter5) || (can_MsgRx.id == Filter6) + || (can_MsgRx.id == Filter7) || (can_MsgRx.id == Filter8) || (can_MsgRx.id == Filter9) || (can_MsgRx.id == Filtera) || (can_MsgRx.id == Filterb) || (can_MsgRx.id == Filterc)){ + //xbee1.printf("\n\rIgnored\n\r"); + } + + else{ + for (int z = 0; z < 8; z++){ + rx_data[z] = (can_MsgRx.data[z]); + if (rx_data[z] > 15){ + first_byte[z] = rx_data[z]/16; + second_byte[z] = (int)(rx_data[z])%16;} + else { + first_byte[z] = 0; + second_byte[z] = rx_data[z]; + }} + + sprintf(buffer,"\n\r%d, %d, %d, %d, %d, %d, %d, %d", (int) rx_data[0],(int) rx_data[1],(int) rx_data[2],(int) rx_data[3],(int) rx_data[4],(int) rx_data[5],(int) rx_data[6],(int) rx_data[7] ); + xbee1.printf(buffer, "\n\r"); + sprintf(buffer,"%d%d %d%d %d%d %d%d %d%d %d%d %d%d %d%d", (int) first_byte[0],(int) second_byte[0],(int) first_byte[1],(int) second_byte[1],(int) first_byte[2],(int) second_byte[2],(int) first_byte[3],(int) second_byte[3], + (int) first_byte[4],(int) second_byte[4],(int) first_byte[5],(int) second_byte[5],(int) first_byte[6],(int) second_byte[6],(int) first_byte[7],(int) second_byte[7]); + xbee1.printf(buffer); + xbee1.printf("\n\r"); + } + } + } int main() { - pc.baud(115200); - char buffer[20]; + + int Mod1 = 0; + int Mod2 = 0; + + rst1 = 0; //Set reset pin to 0 + wait_ms(1);//Wait at least one millisecond + rst1 = 1;//Set reset pin to 1 + wait_ms(1); - //Enable Pullup - click.mode(PullUp); - right.mode(PullUp); - down.mode(PullUp); - left.mode(PullUp); - up.mode(PullUp); + //pc.baud(115200); + // xbee1.baud(9600); + xbee1.baud(115200); //set serial baurd rate, need to configure the xbees to 115200 manually + char buffer[30]; - printf("ECU Reader \n"); - lcd.locate(0,0); // Set LCD cursor position - lcd.printf("CAN-Bus demo"); + // xbee1.printf("ECU Reader \n"); + // lcd.locate(0,0); // Set LCD cursor position + // lcd.printf("ECU Malicious Attack"); - lcd.locate(0,1); - lcd.printf("www.skpang.co.uk"); + // lcd.locate(0,1); + // lcd.printf(" UCLA EE202A"); + + can2.attach(&Rx_interrupt);//, CAN::RxIrq ); //need to figure this out /////// - pc.printf("\n\rCAN-bus demo..."); - - wait(3); - lcd.cls(); - lcd.printf("Use joystick"); + xbee1.printf("\n\rECU Malicious Attack\n\rUCLA EE202A\n\r"); + //wait(3); + //lcd.cls(); + // lcd.locate(0,2); + //lcd.printf("Use joystick"); - lcd.locate(0,1); - lcd.printf("U-CAN:D-GPS:L-SD"); - - pc.printf("\nU-CAN:D-GPS:L-SD"); + // lcd.locate(0,3); + // lcd.printf(" Push BTN1 to Start"); + int can_bus_speed = 500000; + + xbee1.printf("\n\r\n\rSelect CAN BUS Frequency\n\r0: 125Kbps\n\r1: 250Kbps\n\r2: 500Kbps\n\r3: 1Mbps\n\r "); + + while(1){ + if (xbee1.readable()){ + + char c_freq = xbee1.getc(); + + if (c_freq == '0'){ + can_bus_speed = 125000; + break;} + if (c_freq == '1'){ + can_bus_speed = 25000; + break;} + if (c_freq == '2'){ + can_bus_speed = 500000; + break;} + if (c_freq == '3'){ + can_bus_speed = 1000000; + break;} + + } + } + + can2.frequency(can_bus_speed); + + xbee1.printf("\n\rPush BTN1 to Start\n\r"); while(1) // Wait until option is selected by the joystick { - - if(down == 0) gps_demo(); - if(left == 0) sd_demo(); - - if(up == 0) break; + + if(enable == 0) break; } - lcd.cls(); + wait(1); + // lcd.cls(); + + xbee1.printf("\n\r\n\rSelect Mode of Operation:\n\r\n\r0: PID Reading (RPM, Air Intake Temp., Fuel Pressure, and Etc...)\n\r1: Transmit and Receive CAN Packets\n\r"); + + while (1) + { + if (xbee1.readable()) { + char c1 = xbee1.getc(); + if (c1 == '0'){ + Mod1 = 1; + xbee1.printf("\n\rPID Mode Selected!\n\r"); + break; } + if (c1 == '1'){ + Mod2 = 1; + xbee1.printf("\n\rCAN Packet Communication Mode Selected!\n\r"); + break;} + } + } while(1) { // Main CAN loop + + if (Mod1 == 1){ + led2 = 1; wait(0.1); led2 = 0; @@ -92,85 +154,192 @@ { lcd.locate(0,0); lcd.printf(buffer); - pc.printf(buffer); + xbee1.printf(buffer); + xbee1.printf("\n\r"); } if(obdii.request(ENGINE_COOLANT_TEMP,buffer) == 1) { lcd.locate(9,0); lcd.printf(buffer); + xbee1.printf(buffer); + xbee1.printf("\n\r"); } if(obdii.request(VEHICLE_SPEED,buffer) == 1) { lcd.locate(0,1); lcd.printf(buffer); + xbee1.printf(buffer); + xbee1.printf("\n\r"); } if(obdii.request(THROTTLE,buffer) ==1 ) { lcd.locate(9,1); - lcd.printf(buffer); + lcd.printf(buffer); + xbee1.printf(buffer); + xbee1.printf("\n\r"); } - } -} - -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(obdii.request(AIR_INTAKE_TEMP,buffer) ==1 ) + { + lcd.locate(0,2); + lcd.printf(buffer); + xbee1.printf(buffer); + xbee1.printf("\n\r"); + } + + if(obdii.request(FUEL_PRESSURE,buffer) ==1 ) + { + lcd.locate(9,2); + lcd.printf(buffer); + xbee1.printf(buffer); + xbee1.printf("\n\r"); + } + } + + else if (Mod2 == 1){ + led4 = 1; + wait(0.1); + led4 = 0; + wait(0.1); + float rx_data[8]; + int first_byte[8]; + int second_byte[8]; + + int packet1 = 0; + int packet2 = 0; + int packet3 = 0; + int packet4 = 0; + int receive0 = 0; + + char can_bus_msg[8]; + +xbee1.printf("\n\r\n\rSelect Type of Packet to Transmit:\n\r\n\ra: Flow Control\n\rb: Tester Present\n\rc: Enhanced Diagnostics\n\rd: Security Access: Request Seed\n\re: Sniff Packets"); + + + 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"); - + if (xbee1.readable()) { + char c = xbee1.getc(); + if (c == 'a'){ + packet1 = 1; + xbee1.printf("\n\rFlow Control Packet Selected!\n\r"); + break; } + if (c == 'b'){ + packet2 = 1; + xbee1.printf("\n\rTester Present Packet Selected!\n\r"); + break;} + if (c == 'e'){ + receive0 = 1; + xbee1.printf("\n\rRead Filtered Packets!\n\r"); + break;} + if (c == 'c'){ + packet3 = 1; + xbee1.printf("\n\rEnhanced Diagnostics Packet Selected!\n\r"); + break;} + + if (c == 'd'){ + packet4 = 1; + xbee1.printf("\n\rRequest Seed Packet Selected!\n\r"); + break;} } } - -} - -void sd_demo(void) -{ - lcd.cls(); - printf("\nSD demo"); - lcd.printf("SD demo"); - wait(2); - lcd.cls(); + + if (packet1) { //flow control packet + + can_bus_msg[0] = 0x30; //0x30 Clear To Send, 0x31 Wait + can_bus_msg[1] = 0; //Block Size, 0 -> Don't wait, send as many frames as are in the message + can_bus_msg[2] = 0; //Separation Time -> 0 -> Send As Fast As Possible, 101-255 are viable numbers + can_bus_msg[3] = 0; //Don't Care + can_bus_msg[4] = 0; //Don't Care + can_bus_msg[5] = 0; //Don't Care + can_bus_msg[6] = 0; //Don't Care + can_bus_msg[7] = 0; //Don't Care + + can2.write(CANMessage(Ext_Diag, can_bus_msg, 8)); //7E0 Extension Diag. TX + packet1 = 0; + + } + + else if (packet2) { + + can_bus_msg[0] = 0x02; + can_bus_msg[1] = 0x3E; + can_bus_msg[2] = 0x02; + can_bus_msg[3] = 0; + can_bus_msg[4] = 0; + can_bus_msg[5] = 0; + can_bus_msg[6] = 0; + can_bus_msg[7] = 0; + + can2.write(CANMessage(Ext_Diag, can_bus_msg, 8)); //7E0 Extension Diag. TX + packet2 = 0; + } - FILE *fp = fopen("/sd/sdtest2.txt", "w"); - if(fp == NULL) { - lcd.cls(); - lcd.printf("Could not open file for write\n"); - pc.printf("\nCould not open file for write"); - } - fprintf(fp, "Hello fun SD Card World! testing 1234"); - fclose(fp); - lcd.locate(0,1); - lcd.printf("Writtern to SD card"); - pc.printf("\nWrittern to SD card"); + else if (packet3) { + + can_bus_msg[0] = 0x02; + can_bus_msg[1] = 0x10; + can_bus_msg[2] = 0x82; + can_bus_msg[3] = 0; + can_bus_msg[4] = 0; + can_bus_msg[5] = 0; + can_bus_msg[6] = 0; + can_bus_msg[7] = 0; + + can2.write(CANMessage(Ext_Diag, can_bus_msg, 8)); //7E0 Extension Diag. TX + packet3 = 0; + } + else if (packet4) { + + can_bus_msg[0] = 0x02; + can_bus_msg[1] = 0x27; + can_bus_msg[2] = 0x01; + can_bus_msg[3] = 0; + can_bus_msg[4] = 0; + can_bus_msg[5] = 0; + can_bus_msg[6] = 0; + can_bus_msg[7] = 0; + + can2.write(CANMessage(Ext_Diag, can_bus_msg, 8)); //7E0 Extension Diag. TX + packet3 = 0; + } + + else if (receive0) { - while(1) - { - led2 = 1; - wait(0.1); - led2 = 0; - wait(0.1); - - } - -} + if (can2.read(can_MsgRx)){ + + if((can_MsgRx.id == Filter1) || (can_MsgRx.id == Filter1) || (can_MsgRx.id == Filter2) || (can_MsgRx.id == Filter3) || (can_MsgRx.id == Filter4) || (can_MsgRx.id == Filter5) || (can_MsgRx.id == Filter6) + || (can_MsgRx.id == Filter7) || (can_MsgRx.id == Filter8) || (can_MsgRx.id == Filter9) || (can_MsgRx.id == Filtera) || (can_MsgRx.id == Filterb) || (can_MsgRx.id == Filterc)){ + xbee1.printf("\n\rIgnored\n\r"); + } + + else{ + for (int z = 0; z < 8; z++){ + rx_data[z] = (can_MsgRx.data[z]); + if (rx_data[z] > 15){ + first_byte[z] = rx_data[z]/16; + second_byte[z] = (int)(rx_data[z])%16;} + else { + first_byte[z] = 0; + second_byte[z] = rx_data[z]; + }} + + sprintf(buffer,"%d, %d, %d, %d, %d, %d, %d, %d", (int) rx_data[0],(int) rx_data[1],(int) rx_data[2],(int) rx_data[3],(int) rx_data[4],(int) rx_data[5],(int) rx_data[6],(int) rx_data[7] ); + xbee1.printf(buffer); + xbee1.printf("\n\r"); + sprintf(buffer,"%d%d %d%d %d%d %d%d %d%d %d%d %d%d %d%d", (int) first_byte[0],(int) second_byte[0],(int) first_byte[1],(int) second_byte[1],(int) first_byte[2],(int) second_byte[2],(int) first_byte[3],(int) second_byte[3], + (int) first_byte[4],(int) second_byte[4],(int) first_byte[5],(int) second_byte[5],(int) first_byte[6],(int) second_byte[6],(int) first_byte[7],(int) second_byte[7]); + xbee1.printf(buffer); + xbee1.printf("\n\r"); + } + } + + } + } // end else + } //end while +}//end main + +