I've just started working with at90can128 and I'm in trouble. I downloaded the atmel's lib for this mcu and i'm trying to run it in avr-gcc, but up to now, nothing.
Does anybody did this?
if not, i'll try to explain what i'm doing...
I have 2 stk500 with 2 stk501 and 2 at90can128, i want then to talk. I'm trying with the code from Atmel, the lib they have there for this mcu but to IAR compiler... it is a polling loop_back_without_interrupt. I made this compile... and I made another piece of code to generate a CAN pack in the other mcu... OK that's all beautiful but it doesn't work...
I know it is dificult to understand but there we go...
I guess the sender, is correct (I made it ;-), but using the atmel lib ) so let's go to the receiver loopback:
this is where everuthing happens:
void loop_back_without_interrupt(void)
{
unsigned char buffer[8];
st_cmd_t msg; // message descriptor store in code area
msg.pt_data = &buffer[0];
msg.status = 0;
msg.handle = 0;
do{
msg.cmd = CMD_RX;
PORTB = 0xfe;
while(can_cmd(&msg) != CAN_CMD_ACCEPTED);
while(can_getstatus(&msg) != CAN_STATUS_COMPLETED);
PORTB = 0xfd;
if (msg.ctrl.rtr) {
msg.cmd = CMD_TX_REMOTE;
} else {
msg.cmd = CMD_TX;
}
PORTB = 0xfb;
while(can_cmd(&msg) != CAN_CMD_ACCEPTED);
while(can_getstatus(&msg) != CAN_STATUS_COMPLETED);
} while(1);
}
but it nevers get out of the second loop... the one wich checks the status!
can anyone help...
Thanks in advance,
--
Mr. Santos, Danillo Moura - Computer Science Student - UFSC
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