Acceptance Filtering MSCAN

[Kartoon67]

Hi,

I’m using the microprocessor MC9S12XF512MLM and i try to send and receive a CAN frame. But in the example FREESCALE, i can just receive by interrupte the ID 0x6C700000.

For my application, i want to receive all CAN frame with their ID.

/* Acceptance FiltersCAN0IDAC = 0x10;CAN0IDAR0 = 0xFF;CAN0IDMR0 = 0xFF;CAN0IDAR1 = 0xFF;CAN0IDMR1 =0xFF;CAN0IDAR2 =0xFF;CAN0IDMR2 =0xFF;CAN0IDAR3 = 0xFF;CAN0IDMR3 = 0xFF;CAN0IDAR4 = 0xFF;CAN0IDMR4 =0xFF;CAN0IDAR5 = 0xFF;CAN0IDMR5 = 0xFF;CAN0IDAR6 = 0xFF;CAN0IDMR6 = 0xFF;CAN0IDAR7 = 0xFF;CAN0IDMR7 = 0xFF;

I have doing that, is that correct?

Regards,

[kef · Accepted solution]

       ID 0x6C700000.

This number is not the CAN ID. Extended CAN ID has 29bits. Your number won't fit.

Yes, setting all bits in CANxIDMRn registers will make filter accepting all identifiers.