I am using T89C51CC03 UA right now. while debugging I found out that even if I wanna send a message once ( via interrupt ), the CAN bus is full of the same message with a period of 1.5ms. I am sure that other messages are not sent by the interrrupt routine by placing some debugging code inside it. My question is : Are the other messages sent automatically by the hardware itself if there are no other CAN nodes on the bus to receive them? If so, how could I solve this problem?