Stephen Dickey / Mbed 2 deprecated C027_CANInterfaceComm

This tests the CAN interface between two LISA C027 MBED Boards. By connecting the two boards, pins 1,2,3 respectively on the CAN interface, and loading and executing this code on BOTH boards, CAN messages will be received, and printed, on the PC-USB console interface of both devices.

Dependencies:   C027-REVB UbloxUSBModem mbed

Fork of C027_ModemTransparentUSBCDC_revb by Stephen Dickey

main.cpp@3:048ec5c2dc14, 2013-12-15 (annotated)

Committer:
dixter1
Date:
Sun Dec 15 21:35:12 2013 +0000
Revision:
3:048ec5c2dc14
Parent:
2:c4ad86683060 
Comment update and C027-REVB Library Update.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dixter1 0:92ab4f4846f8 1 #include "mbed.h"
dixter1 0:92ab4f4846f8 2 #include "C027.h"
dixter1 0:92ab4f4846f8 3
dixter1 2:c4ad86683060 4 Ticker ticker;
dixter1 2:c4ad86683060 5 DigitalOut led1(LED);
dixter1 2:c4ad86683060 6 DigitalOut led2(LED1);
dixter1 2:c4ad86683060 7 CAN can1(CANRD, CANTD);
dixter1 2:c4ad86683060 8 Serial pc(USBTX, USBRX);
dixter1 0:92ab4f4846f8 9
dixter1 2:c4ad86683060 10 char counter = 0;
dixter1 0:92ab4f4846f8 11
dixter1 3:048ec5c2dc14 12 // this function creates a CAN message with a counter in it
dixter1 3:048ec5c2dc14 13 // and sends it on the CAN interface
dixter1 2:c4ad86683060 14 void send() {
dixter1 2:c4ad86683060 15 if(can1.write(CANMessage(1337, &counter, 1))) {
dixter1 2:c4ad86683060 16 pc.printf("Message sent: %d\r\n", counter);
dixter1 2:c4ad86683060 17 counter++;
dixter1 0:92ab4f4846f8 18 }
dixter1 2:c4ad86683060 19 led1 = !led1;
dixter1 2:c4ad86683060 20 }
dixter1 2:c4ad86683060 21
dixter1 2:c4ad86683060 22 int main() {
dixter1 2:c4ad86683060 23
dixter1 2:c4ad86683060 24 DigitalOut can_standby(CANS);
dixter1 2:c4ad86683060 25
dixter1 2:c4ad86683060 26 // enable the CAN interface
dixter1 2:c4ad86683060 27 // take it out of standby
dixter1 2:c4ad86683060 28 can_standby = 0;
dixter1 2:c4ad86683060 29
dixter1 3:048ec5c2dc14 30 // specify the baud rate for communications
dixter1 3:048ec5c2dc14 31 // with the serial console to the PC host.
dixter1 0:92ab4f4846f8 32 pc.baud(MDMBAUD);
dixter1 0:92ab4f4846f8 33
dixter1 2:c4ad86683060 34 pc.printf( "Starting CAN Testing\r\n");
dixter1 2:c4ad86683060 35
dixter1 2:c4ad86683060 36 CANMessage msg;
dixter1 2:c4ad86683060 37 while(1) {
dixter1 2:c4ad86683060 38
dixter1 2:c4ad86683060 39 if(can1.read(msg)) {
dixter1 2:c4ad86683060 40 pc.printf("Message received: %d\r\n", msg.data[0]);
dixter1 2:c4ad86683060 41 led2 = !led2;
dixter1 0:92ab4f4846f8 42 }
dixter1 0:92ab4f4846f8 43
dixter1 2:c4ad86683060 44 wait(0.2);
dixter1 2:c4ad86683060 45
dixter1 3:048ec5c2dc14 46 // send a new message.
dixter1 2:c4ad86683060 47 send();
dixter1 0:92ab4f4846f8 48 }
dixter1 0:92ab4f4846f8 49 }
dixter1 2:c4ad86683060 50
dixter1 2:c4ad86683060 51