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
main.cpp@2:c4ad86683060, 2013-12-14 (annotated)
- Committer:
- dixter1
- Date:
- Sat Dec 14 00:24:59 2013 +0000
- Revision:
- 2:c4ad86683060
- Parent:
- 1:15b5edb4a91f
- Child:
- 3:048ec5c2dc14
First revision working, messages going between two LISA C027 boards across the CAN interface.
Who changed what in which revision?
User | Revision | Line number | New 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 | 2:c4ad86683060 | 12 | void send() { |
dixter1 | 2:c4ad86683060 | 13 | if(can1.write(CANMessage(1337, &counter, 1))) { |
dixter1 | 2:c4ad86683060 | 14 | pc.printf("Message sent: %d\r\n", counter); |
dixter1 | 2:c4ad86683060 | 15 | counter++; |
dixter1 | 0:92ab4f4846f8 | 16 | } |
dixter1 | 2:c4ad86683060 | 17 | led1 = !led1; |
dixter1 | 2:c4ad86683060 | 18 | } |
dixter1 | 2:c4ad86683060 | 19 | |
dixter1 | 2:c4ad86683060 | 20 | int main() { |
dixter1 | 2:c4ad86683060 | 21 | |
dixter1 | 2:c4ad86683060 | 22 | DigitalOut can_standby(CANS); |
dixter1 | 2:c4ad86683060 | 23 | |
dixter1 | 2:c4ad86683060 | 24 | // enable the CAN interface |
dixter1 | 2:c4ad86683060 | 25 | // take it out of standby |
dixter1 | 2:c4ad86683060 | 26 | can_standby = 0; |
dixter1 | 2:c4ad86683060 | 27 | |
dixter1 | 0:92ab4f4846f8 | 28 | pc.baud(MDMBAUD); |
dixter1 | 0:92ab4f4846f8 | 29 | |
dixter1 | 2:c4ad86683060 | 30 | pc.printf( "Starting CAN Testing\r\n"); |
dixter1 | 2:c4ad86683060 | 31 | |
dixter1 | 2:c4ad86683060 | 32 | CANMessage msg; |
dixter1 | 2:c4ad86683060 | 33 | while(1) { |
dixter1 | 2:c4ad86683060 | 34 | |
dixter1 | 2:c4ad86683060 | 35 | if(can1.read(msg)) { |
dixter1 | 2:c4ad86683060 | 36 | pc.printf("Message received: %d\r\n", msg.data[0]); |
dixter1 | 2:c4ad86683060 | 37 | led2 = !led2; |
dixter1 | 0:92ab4f4846f8 | 38 | } |
dixter1 | 0:92ab4f4846f8 | 39 | |
dixter1 | 2:c4ad86683060 | 40 | wait(0.2); |
dixter1 | 2:c4ad86683060 | 41 | |
dixter1 | 2:c4ad86683060 | 42 | send(); |
dixter1 | 0:92ab4f4846f8 | 43 | } |
dixter1 | 0:92ab4f4846f8 | 44 | } |
dixter1 | 2:c4ad86683060 | 45 | |
dixter1 | 2:c4ad86683060 | 46 |