AN2341

Programming through polling

13/26

Then, for each message object, the procedure to handle interrupt and decode can be the

same as the one proposed before:

if (CANxIF1A2 & IF_DIR)

// direction = transmit

{

if (CANxIF1MC & IF_NEWDAT) // remote received

//provided that UMask = 1 and RmtEn = 0

{.....} // procedure to handle answer to remote

else

{.....} // procedure to handle transmit interrupts

}

else

// direction = receive

{

if (CANxIF1MC & IF_NEWDAT) // NewDat is set

{.....} // procedure to handle data receive interrupt

else

{.....} // a remote frame was successfully transmitted

}

break;