Arran SHORT / Mbed 2 deprecated MTS_TO_MSCAN

Innovate MTS to Megasquirt MSCAN

Dependencies:   CANnucleo mbed

Fork of CANnucleo_Hello by Zoltan Hudak

INNOVATE MTS SERIAL STREAM TO MEGASQUIRT MSCAN ANALOG

This was tested on the olimex olimexino-stm32. code comes with no warrenty, always confirm AFR readings at the device.

I haven't tested this on an ECU or with an LM2 yet this has all been done with simulations, so there may be real world bugs.

code was based off http://developer.mbed.org/users/hudakz/code/CAN_Nucleo_Hello/ mts datasheet http://www.innovatemotorsports.com/support/downloads/Seriallog-2.pdf MSCAN http://www.msextra.com/doc/pdf/Megasquirt_CAN_Broadcast.pdf

** PLEASE NOTE ** MSCAN has table and data offsets to choose what data it requires, this code hasn't implimented any of that so regardless of them it just sends lambda for the first analog value and the mts function value in the second

MTS Serial is RS232 not ttl so you will need an RS-232 Transceiver

Diff: main.cpp

Revision:
2:49c9430860d1
Parent:
1:267d6288df33
Child:
3:464b06c16d24
--- a/main.cpp	Sun Jul 19 14:12:34 2015 +0000
+++ b/main.cpp	Thu Jul 23 13:11:08 2015 +0000
@@ -1,7 +1,7 @@
 /*
  * An example showing how to use the CANnucleo library:
  *
- * Two NUCLEO boards are connected to the same CAN bus via CAN transceivers (MPC2551 or TJA1040, or etc.).
+ * Two NUCLEO boards are connected to the same CAN bus via CAN transceivers (MCP2551 or TJA1040, or etc.).
  * Transceivers are not part of the NUCLEO boards, therefore must be added by you.
  * Remember also that CAN bus must be terminated with 120 Ohm resitors on both ends.
  * See <https://developer.mbed.org/users/WiredHome/notebook/can---getting-started/>
@@ -36,7 +36,7 @@
 CAN             can(PA_11, PA_12);  // rx, tx
 CANMessage      rxMsg;
 CANMessage      txMsg;
-long int        counter;
+long int        counter = 0;
 volatile bool   msgAvailable = false;
 
 /**
@@ -61,10 +61,10 @@
     can.attach(&onMsgReceived, CAN::RxIrq);     // attach 'CAN receive complete' interrupt handler
     timer.reset();
 #if defined(BOARD1)
-        led = 1;
-        timer.start();
+    led = 1;
+    timer.start();
 #else
-        led = 0;
+    led = 0;
 #endif
 
     while(1) {
@@ -78,15 +78,23 @@
             txMsg << led.read();                // append second data item (always make sure that CAN message total data lenght <= 8 bytes!)
             can.write(txMsg);                   // transmit message
             printf("CAN message sent\r\n");
-            led = 0;                            // turn off led
+            led = 0;                            // turn off LED
         }
         if(msgAvailable) {
             msgAvailable = false;               // reset flag for next use
             can.read(rxMsg);                    // read message into Rx message storage
-            printf("CAN message with ID = %x received\r\n", rxMsg.id);
+            printf("CAN message received:\r\n");
+            printf("  ID     = %#x\r\n", rxMsg.id);
+            printf("  Type   = %d\r\n", rxMsg.type);
+            printf("  Format = %d\r\n", rxMsg.format);
+            printf("  Length = %d\r\n", rxMsg.len);
+            printf("  Data   =");            
+            for(int i = 0; i < rxMsg.len; i++)
+                printf(" %x", rxMsg.data[i]);
+            printf("\r\n");            
             if(rxMsg.id == RX_ID) {             // if ID matches
                 rxMsg >> counter;               // extract first data item
-                rxMsg >> led;                   // extract second data item (and set led status)
+                rxMsg >> led;                   // extract second data item (and set LED status)
                 printf("counter = %d\r\n", counter);
                 timer.start();
             }