topic Re: S12ZVC CAN ID Acception Filter in S12 / MagniV Microcontrollers

S12ZVC CAN ID Acception Filter

jx1207 — Sat, 30 Jun 2018 08:29:27 GMT

I just want to receive data of ID=0x08 message. I set as follows:

CAN0IDAC_IDAM = 0; /* Two 32 bit filters */
CAN0IDAR0=0x01;
CAN0IDAR1=0x00;
CAN0IDMR0 = 0x00; /* Match all incoming ID's */
CAN0IDMR1 = 0x00;

但是我调试程序时发现可以接收ID=0x008和ID=0x000的数据。为什么可以接收ID=0x000的数据？？？

Thanks!

danielmartynek — Mon, 02 Jul 2018 12:47:10 GMT

Hi,

It can be useful.

Regards,

Daniel

jx1207 — Wed, 04 Jul 2018 05:39:29 GMT

根据程序设定

IDAR=00000001000;

IDMR=00000000000;

所以应该只能接收ID=00000001000，即ID=0x008发送的数据。但是实际调试过程中可以接收ID=0x008

和ID=0x000发送的数据。ID=0x000没有满足要求，为什么还可以接收到数据，进入中断呢？

jx1207 — Tue, 21 Apr 2020 05:41:09 GMT

IDMR全为0，设置成“必须匹配”，说明应该只接收我设置的ID，为什么ID=0x000也能接收?