18F4580 CAN doubt

[pasini]

We are using a PIC18F4580 to communicate via CAN interface, but when I include the "#zero_ram" statment at the top of my code (main.c), it gets locked at the "can-18F4580.c" file, whcih was included. If I do not include the "#zero ram" statment the code runs well. Why is it ?

void can_set_mode(CAN_OP_MODE mode) {
CANCON.reqop=mode;
while( (CANSTAT.opmode) != mode ); //<<<---- never ending loop
} // if #zero ram is included
// in my code

Why CANSTAT does no change its register according to the can_set_mode ?

Thanks in advance,
Pasini

[PCM programmer]

[pasini]

I am using MPLAB 7.20 + CCS 3.23