Hello, CANSPIWrite function will check if there is a empty transmitter. If it is found, function will write a message and it will be queued for sending. In this case FF will be returned. If there is no empty transmitter buffer, function will return 0. So it mean that I have a problem in hardware, r...

Hello, Our CAN SPI modules have MCP2515 chip implemented. This chip has INT pin which can be connected to External Interrupt pin of the microcontroller. For example you can set this chip to generate interrupt when message is sent or received successfully. When appropriate interrupt is triggered you...

Hello, I use scheme similar to CAN/CANSPI example from uC manual. After some debugging all works fine except that I never see zero result (all transmit buffers full) for code below. I don't see zero result even if I send messages like mad. And some messages are corrupted/lost as result of intensive ...

Ok, I spend some time to understand how to setup CAN speed properly. So I would like to share this info with community :) I used this cool calculator: http://www.port.de/pages/misc/bittimings.php?lang=en Please bear in mind that you should divide real oscillator speed by 2 (as described in calculato...