Sophie Dexter / Mbed 2 deprecated Just4Trionic

Just4Trionic - CAN and BDM FLASH programmer for Saab cars

Dependencies:   mbed

main.cpp@1:d5452e398b76, 2010-09-14 (annotated)

Committer:
Just4pLeisure
Date:
Tue Sep 14 21:02:04 2010 +0000
Revision:
1:d5452e398b76
Parent:
0:e0b964252a05
Child:
2:bf3a2b29259a

        

        
Who changed what in which revision?

        

            
                
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/*******************************************************************************





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Just4Trionic by Just4pLeisure





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*****************************





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(c) 2010 by Sophie Dexter





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Whilst I have written this program myself I could not have done it without





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a lot of help and the original ideas and programs written by:





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Dilemma - Author of the Trionic Suite software programs and general Guru





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http://trionic.mobixs.eu/ and http://www.ecuproject.com.





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General Failure - Author of the T5CANlib software and regular contributor at





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http://www.ecuproject.com.





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Tomi Liljemark - Lots of information and programs about the Saab CAN bus





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http://pikkupossu.1g.fi/tomi/projects/projects.html.





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Scott Howard - Author of the BDM software.





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Janis Silins - Valued contributor at http://www.ecuproject.com and creator of





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USBBDM. For sharing his BDM software (which also had a very useful method of





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entering commands)





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Plus inspiration and ideas from many others...





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Sophie x





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********************************************************************************





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WARNING: Use at your own risk, sadly this software comes with no guarantees.





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This software is provided 'free' and in good faith, but the author does not





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accept liability for any damage arising from its use.





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********************************************************************************





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Version 1.1 (09/2010) - Still very crude way of doing things





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Additions since Version 1:





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    The BDM interface is now working





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        Based on Janis Silin's BDM software with modifications and additions





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            Detect which type of FLASH chip is fitted to work out type of ECU





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            Modifications to FLASH algorithms - I think my algorithms are





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            closer to the datasheet methods. Still to do:





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                Separate pulse counters for 28Fxxx erase





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                DQ7 and DQ5 checking method for 29Fxxx FLASH





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        Works for T5.5 ECUs with 28F010 and 29F010 chips





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        Probably works with T5.2 ECUs (chip detection method)





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        MAY work with T7 ECUs ('prep' method may need changes - I can't test T7)





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        NOTE: Some of Janis' original BDM commands may not work, or at least





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        not as originally intended





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    Lawicell CAN232 interface partially working





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        Only a few Lawicell message types to open/close, set speed and write





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    Trionic5 CAN functions





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        All-in-one 'D' and 'F' commands to DUMP and FLASH BIN files





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            Lots of checking for errors, either works or says it failed





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            No need to interpret the cryptic CAN messages anymore





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        Should now work for T5.2 and T5.5 ECUs





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        Detects FLASH chip type and works out which ECU is connected T5.2/5.5





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********************************************************************************





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Version 1 (04/2010)- The basic CAN functions are working





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I have decided to 'release' this software somewhat prematurely because the FLASH





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chips in my spare ECU have 'died' and I don't know when I will be able to do





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carry on improving and 'polishing' it. This way others will be able to use and





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enhance it without having to wait for me.





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For now, only option '5' Trionic ECU CAN interface is working. BDM and Lawicell





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CAN232 functions are dummies. The intention is to build a complete suite of CAN





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software for Trionic5, 7 and 8 ECU types as well as adding a BDM interface to





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make an 'all-in-one' USB programming tool.





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To make this you will need an mbed system and the CAN circuit from this page:





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http://mbed.org/projects/cookbook/wiki/CanBusExample1





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Some ideas for the truly creative and adventurous of you is to make a gizmo that





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doesn't even need to be connected to a laptop or PC to use, maybe even a self-





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contained vesion of Dilemma's CarPC using ideas from this pages:





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http://mbed.org/projects/cookbook/wiki/PS2Keyboard





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http://mbed.org/projects/cookbook/wiki/PS2Mouse





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http://mbed.org/projects/cookbook/wiki/MobileLCD





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http://mbed.org/projects/cookbook/wiki/SDCard





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*******************************************************************************/





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#include "mbed.h"





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//





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#include "common.h"





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#include "bdm.h"





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#include "can232.h"





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#include "t5can.h"





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// constants





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#define CMD_BUF_LENGTH      32              ///< command buffer size





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// static variables





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static char cmd_buffer[CMD_BUF_LENGTH];     ///< command string buffer





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// private functions





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uint8_t execute_just4trionic_cmd();





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void show_just4trionic_help();





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int main() {





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    // fast serial speed





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//    pc.baud(921600);





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    pc.baud(115200);





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    // the address of the function to be attached (leds_off) and the interval (0.1 seconds)





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    // This 'ticker' turns off the activity LEDs so that they don't stay on if something has gone wrong





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    ticker.attach(&leds_off, 0.1);





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    // clear incoming buffer





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    // sometimes TeraTerm gets 'confused'. johnc does this in his code





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    // hopefully this will fix the problem





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    // unfortunately it doesn't, but it seems like a good idea





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    char rx_char;





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    while (pc.readable())





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        rx_char = pc.getc();





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    show_just4trionic_help();





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    // main loop





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    *cmd_buffer = '\0';





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    char ret;





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    while (true) {





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        // read chars from USB





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        // send received messages to the pc over USB connection





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        // This function displays any CAN messages that are 'missed' by the other functions





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        // Can messages might be 'missed' because they are received after a 'timeout' period





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        // or because they weren't expected, e.g. if the T5 ECU resets for some reason





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        t5_can_show_can_message();





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        if (pc.readable()) {





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            // turn Error LED off for next command





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            led4 = 0;





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            rx_char = pc.getc();





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            switch (rx_char) {





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                    // end-of-command reached





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                case TERM_OK :





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                    // execute command and return flag via USB





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                    timer.reset();





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                    timer.start();





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                    ret = execute_just4trionic_cmd();





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                    show_just4trionic_help();





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                    pc.putc(ret);





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                    // reset command buffer





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                    *cmd_buffer = '\0';





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                    // light up LED





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//                    ret == TERM_OK ? led_on(LED_ACT) : led_on(LED_ERR);





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                    ret == TERM_OK ? led3 = 1 : led4 = 1;





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                    break;





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                    // another command char





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                default:





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                    // store in buffer if space permits





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                    if (StrLen(cmd_buffer) < CMD_BUF_LENGTH - 1) {





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                        StrAddc(cmd_buffer, rx_char);





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                    }





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                    break;





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            }





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        }





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    }





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}





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//-----------------------------------------------------------------------------





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/**





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    Executes a command and returns result flag (does not transmit the flag





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    itself).





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    @return                    command flag (success / failure)





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*/





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uint8_t execute_just4trionic_cmd() {





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//    uint8_t cmd_length = strlen(cmd_buffer);





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    // command groups





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    switch (*cmd_buffer) {





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//            CHECK_ARGLENGTH(0);





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        case 'b':





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        case 'B':





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            bdm();





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            return TERM_OK;





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        case 'o':





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        case 'O':





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            can232();





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            return TERM_OK;





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        case '5':





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            t5_can();





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            return TERM_OK;





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        case 'h':





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        case 'H':





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            return TERM_OK;





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        default:





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            break;





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    }





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// unknown command





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    return TERM_ERR;





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}





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void show_just4trionic_help() {





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    printf("Just4Trionic Command Menu\r\n");





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    printf("=========================\r\n");





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    printf("b/B - Start BDM interface\r\n");





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    printf("o/O - Open Lawicel CAN232 type interface\r\n");





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    printf("5   - Start Trionic5 ECU CAN interface\r\n");





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    printf("\r\n");





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    printf("h/H - show this help menu\r\n");





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    printf("\r\n");





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    return;





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}