Sophie Dexter
Just4Trionic - CAN and BDM FLASH programmer for Saab cars
Diff: t8can.cpp
- Revision:
- 4:682d96ff6d79
- Child:
- 5:1775b4b13232
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/t8can.cpp Wed Sep 11 11:55:51 2013 +0000
@@ -0,0 +1,303 @@
+/*******************************************************************************
+
+trionic8.cpp - CAN Bus functions for Just4Trionic by Just4pLeisure
+(c) 2011, 2012 by Sophie Dexter
+
+This C++ module provides functions for reading and writing the FLASH chips and
+SRAM in Trionic8 ECUs. (Writing the adaption data back to SRAM not done yet).
+
+Some functions need an additional 'bootloader' program to be sent to the T8 ECU
+before they can be used. These functions are: Identifying the T5 ECU type and
+FLASH chips, dumping the FLASH chips, erasing the FLASH chips, writing to the
+FLASH chips and calculating the FLASH chips' checksum.
+
+********************************************************************************
+
+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 "t8can.h"
+
+// constants
+#define CMD_BUF_LENGTH 32 ///< command buffer size
+
+// static variables
+static char cmd_buffer[CMD_BUF_LENGTH]; ///< command string buffer
+
+//static uint32_t cmd_addr; ///< address (optional)
+//static uint32_t cmd_value; ///< value (optional)
+//static uint32_t cmd_result; ///< result
+
+//static uint32_t flash_start = 0;
+
+// private functions
+uint8_t execute_t8_cmd();
+void t8_can_show_help();
+void t8_can_show_full_help();
+
+void t8_can()
+{
+ // Start the CAN bus system
+ // Note that at the moment this is only for T8 ECUs at 500 kbits
+ t8_can_show_help();
+
+ char data[8];
+ printf("Trying to listen to CAN P-Bus (500 kBit/s)...\r\n");
+ can_configure(2, 500000, 1);
+ if (can_wait_timeout(T8ANYMSG, data, 8, T8MESSAGETIMEOUT)) {
+ printf("Connected to Saab P-Bus\r\n");
+ printf("Switching to P-Bus active mode\r\n");
+ can_configure(2, 500000, 0);
+ } else {
+ printf("I did not receive any P-Bus messages\r\n");
+ printf("Switching to P-Bus active mode\r\n");
+ can_configure(2, 500000, 0);
+ if (can_wait_timeout(T8ANYMSG, data, 8, T8CONNECTTIMEOUT)) {
+ printf("Connected to Saab P-Bus\r\n");
+ //can_active();
+ } else {
+ printf("FAILED to connect!\r\n");
+ led4 = 1;
+ }
+ }
+
+// main loop
+ *cmd_buffer = '\0';
+ char ret;
+ char rx_char;
+ while (true) {
+ // read chars from USB
+ // send received messages to the pc over USB connection
+ // This function displays any CAN messages that are 'missed' by the other functions
+ // Can messages might be 'missed' because they are received after a 'timeout' period
+ // or because they weren't expected, e.g. if the T5 ECU resets for some reason
+// t7_show_can_message();
+ silent_can_message();
+ if (pc.readable()) {
+ // turn Error LED off for next command
+ led4 = 0;
+ rx_char = pc.getc();
+ switch (rx_char) {
+ // 'ESC' key to go back to mbed Just4Trionic 'home' menu
+ case '\e':
+ can_close();
+ return;
+ // end-of-command reached
+ case TERM_OK :
+ // execute command and return flag via USB
+ timer.reset();
+ timer.start();
+ ret = execute_t8_cmd();
+ pc.putc(ret);
+ printf("Completed in %.3f seconds.\r\n", timer.read());
+ // reset command buffer
+ *cmd_buffer = '\0';
+ // light up LED
+ // ret == TERM_OK ? led_on(LED_ACT) : led_on(LED_ERR);
+ ret == TERM_OK ? led3 = 1 : led4 = 1;
+ break;
+ // another command char
+ default:
+ // store in buffer if space permits
+ if (StrLen(cmd_buffer) < CMD_BUF_LENGTH - 1) {
+ StrAddc(cmd_buffer, rx_char);
+ }
+ break;
+ }
+ }
+ }
+}
+
+//-----------------------------------------------------------------------------
+/**
+ Executes a command and returns result flag (does not transmit the flag
+ itself).
+
+ @return command flag (success / failure)
+*/
+uint8_t execute_t8_cmd()
+{
+
+ char data[8];
+// uint8_t cmd_length = strlen(cmd_buffer);
+ // command groups
+ switch (*cmd_buffer) {
+// CHECK_ARGLENGTH(0);
+ // Get the Symbol Table
+ case 'i' :
+ if (t8_initialise()) {
+ printf("Trionic 8 Connection OK\r\n");
+ return TERM_OK;
+ } else {
+ printf("Trionic 8 Connection Failed\r\n");
+ return TERM_ERR;
+ }
+// return t7_initialise()
+// ? TERM_OK : TERM_ERR;
+ case 'a' :
+ case 'A' :
+ if (t8_authenticate(0x01)) {
+ printf("Security Key Accepted\r\n");
+ return TERM_OK;
+ } else {
+ printf("Security Key Failed\r\n");
+ return TERM_ERR;
+ }
+// return t7_authenticate()
+// ? TERM_OK : TERM_ERR;
+
+// Erase the FLASH chips
+ case 'e':
+ case 'E':
+ return t8_erase()
+ ? TERM_OK : TERM_ERR;
+// DUMP the T8 ECU BIN file stored in the FLASH chips
+ case 'D':
+ if (!t8_authenticate(0x00)) {
+ if (!t8_initialise()) {
+ printf("Trionic 7 Connection Failed\r\n");
+ return TERM_ERR;
+ }
+ if (!t8_authenticate(0x00)) {
+ printf("Security Key Failed\r\n");
+ return TERM_ERR;
+ }
+ }
+ case 'd':
+ return t8_dump()
+ ? TERM_OK : TERM_ERR;
+// Send a FLASH update file to the T8 ECU
+ case 'F':
+ if (!t8_authenticate(0x00)) {
+ if (!t8_initialise()) {
+ printf("Trionic 7 Connection Failed\r\n");
+ return TERM_ERR;
+ }
+ if (!t8_authenticate(0x00)) {
+ printf("Security Key Failed\r\n");
+ return TERM_ERR;
+ }
+ }
+ if (!t8_erase()) {
+ printf("Could not Erase FLASH!\r\n");
+ return TERM_ERR;
+ }
+ case 'f':
+ return t8_flash()
+ ? TERM_OK : TERM_ERR;
+// Try to connect to CAN I-BUS
+ case 'I' :
+ printf("Trying to open CAN I-Bus (47619 Bit/s)...\r\n");
+ can_close();
+ //can_monitor();
+ can_set_speed(47619);
+ can_open();
+ if (can_wait_timeout(T8ANYMSG, data, 8, T8CONNECTTIMEOUT)) {
+ printf("Connected to Saab I-Bus\r\n");
+ //can_active();
+ return TERM_OK;
+ } else {
+ printf("I did not receive any I-Bus messages\r\n");
+ printf("FAILED to connect!\r\n");
+ return TERM_ERR;
+ }
+// Try to connect to CAN P-BUS
+ case 'P' :
+ printf("Trying to open CAN P-Bus (500 kBit/s)...\r\n");
+ can_close();
+ //can_monitor();
+ can_set_speed(500000);
+ can_open();
+ if (can_wait_timeout(T8ANYMSG, data, 8, T8CONNECTTIMEOUT)) {
+ printf("Connected to Saab P-Bus\r\n");
+ //can_active();
+ return TERM_OK;
+ } else {
+ printf("I did not receive any P-Bus messages\r\n");
+ printf("FAILED to connect!\r\n");
+ return TERM_ERR;
+ }
+// Show the VIN code
+ case 'v':
+ return t8_show_VIN()
+ ? TERM_OK : TERM_ERR;
+ case 'V':
+ return t8_write_VIN()
+ ? TERM_OK : TERM_ERR;
+// Print help
+ case 'h':
+ t8_can_show_help();
+ return TERM_OK;
+ case 'H':
+ t8_can_show_full_help();
+ return TERM_OK;
+ default:
+ t8_can_show_help();
+ break;
+ }
+// unknown command
+ return TERM_ERR;
+}
+
+//
+// Trionic7ShowHelp
+//
+// Displays a list of things that can be done with the T5 ECU.
+//
+// inputs: none
+// return: none
+//
+void t8_can_show_help()
+{
+ printf("Trionic 8 Command Menu\r\n");
+ printf("======================\r\n");
+ printf("D - DUMP the T8 ECU FLASH to a file 'ORIGINAL.BIN'\r\n");
+ printf("F - FLASH the update file 'MODIFIED.HEX' to the T8\r\n");
+ printf("\r\n");
+ printf("I - Try to open CAN I-Bus (47619 Bit/s)\r\n");
+ printf("P - Try to open CAN P-Bus (500 kBit/s)\r\n");
+ printf("\r\n");
+ printf("'ESC' - Return to Just4Trionic Main Menu\r\n");
+ printf("\r\n");
+ printf("h - Show this help menu\r\n");
+ printf("\r\n");
+ return;
+}
+//
+// t7_can_show_full_help
+//
+// Displays a complete list of things that can be done with the T5 ECU.
+//
+// inputs: none
+// return: none
+//
+void t8_can_show_full_help()
+{
+ printf("Trionic 8 Command Menu\r\n");
+ printf("======================\r\n");
+ printf("D - DUMP the T8 ECU FLASH to a file 'ORIGINAL.BIN'\r\n");
+ printf("F - FLASH the update file 'MODIFIED.HEX' to the T8\r\n");
+ printf("\r\n");
+ printf("I - Try to open CAN I-Bus (47619 Bit/s)\r\n");
+ printf("P - Try to open CAN P-Bus (500 kBit/s)\r\n");
+ printf("\r\n");
+ printf("\r\n");
+ printf("i - Send initialisation message to T8\r\n");
+ printf("a - Send Authentication key to T8\r\n");
+ printf("d - Dump T8 Bin file 'ORIGINAL.BIN'\r\n");
+ printf("e - Erase the FLASH in the T8 ECU\r\n");
+ printf("f - FLASH the file 'MODIFIED.BIN' to the T8 ECU\r\n");
+ printf("v - Display the current VIN code stored in the T8 ECU\r\n");
+ printf("V - FLASH the file 'MODIFIED.BIN' to the T8 ECU\r\n");
+ printf("\r\n");
+ printf("'ESC' - Return to Just4Trionic Main Menu\r\n");
+ printf("\r\n");
+ printf("H - Show this help menu\r\n");
+ printf("\r\n");
+ return;
+}
+
+