11 years, 7 months ago.

CAN Hello World Example

Hello Mbed Team,

This is santhosh and im trying to work with the CAN code over here , im using 2 can tranceiver chips mcp 2551 and the bus is terminated with 250 ohm resistor and rs pin of the transceiver grounded but still unable to receive messages from the bus . I have attached the code ,snapshot from hyper terminal and connection schematic . please lemme know whether there's any mistake .

Expecting quick response from your side .

Can Tx code (Running on 1st board)

1. include "mbed.h"

CAN can2(p30, p29);

char counter=0;

void send() {

if(can2.write(CANMessage(20, &counter, 1))) { printf("wloop()\n"); counter++; printf("\n Message sent: %d", counter); }

} int main() {

printf("main()\n");

while(1) {

send();

} }

CAN RX(Running on second board)

1. include "mbed.h" CAN can2(p30, p29); int main() { CANMessage msg; while(1) {

if(can2.read(msg)) {

printf("\n Message received:%d", msg.data[0]);

wait(0.2); } }

}

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