File content as of revision 0:1ab5fdb4fa56:

#include "mbed.h"
 // LR 9/02/18
 //
 // bus CAN
 //
 // Ce programme genere une trame 
 // id=00, data= 01 20 , longueur = 2, can standard (11 bits id)
 //
 // testé à l'analyseur logique = OK !!
 
Ticker ticker;
DigitalOut led1(LED1);
DigitalOut led2(LED2);
CAN can1(p9, p10,1000000);// on definit pin et debit
CAN can2(p30, p29, 1000000);
char counter = 0;
char octet_emis[8]  = "ABCD";
int id = 0x539 ;
  
void send() {
    
    printf("send()\n");
    id = 0x00 ;
    octet_emis[0] = 0x01 ;
    octet_emis[1] = 0x20 ;
    if(can1.write(CANMessage(id, octet_emis, 2,  CANData, CANStandard ))) {
        printf("wloop()\n");
        counter++;
        printf("Message sent: %d\n", counter);
    } 
    led1 = !led1;
}
 
int main() {
    
    printf("main()\n");
    ticker.attach(&send, 1);
    CANMessage msg;
    while(1) {
        printf("loop()\n");
        if(can2.read(msg)) {
            printf("Message received: %d\n", msg.data[0]);
            led2 = !led2;
        } 
        wait(0.2);
    }
}