[En-Nut-Discussion] CAN128: AvrCanOvrIrqCtl and AvrCanTxIrqCtl

[Henrik Maier]

Thank you for pointing this out.

Nut/OS 4.0 introduced changes to the way IRQs are managed. The CAN IRQ 
functions have not yet been updated in the CVS in this regard, hence the 
empty functions. I will check them into the CVS in the next few days.

Here is the required implementation for arch/avr/dev/ivect35.c:

int AvrCanTxIrqCtl(int cmd, void *param)
{
     int rc = 0;
     u_int *ival = (u_int *) param;
     int enabled = bit_is_set(CANGIE, ENIT);

     /* Disable interrupt. */
     cbi(CANGIE, ENIT);

     switch (cmd) {
     case NUT_IRQCTL_INIT:
     case NUT_IRQCTL_DISABLE:
         enabled = 0;
         break;
     case NUT_IRQCTL_ENABLE:
         enabled = 1;
         break;
     case NUT_IRQCTL_GETPRIO:
         *ival = 0;
         break;
#ifdef NUT_PERFMON
     case NUT_IRQCTL_GETCOUNT:
         *ival = (u_int) sig_CAN_TRANSFER.ir_count;
         sig_CAN_TRANSFER.ir_count = 0;
         break;
#endif
     default:
         rc = -1;
         break;
     }

     /* Enable interrupt. */
     if (enabled) {
         sbi(CANGIE, ENIT);
     }
     return rc;
}

Henrik
http://www.proconx.com