Flexcan RX FIFO problem

erreer — Mon, 30 Mar 2020 09:54:35 GMT

Hello, I an use mpc5744(144) , I want to use Flexcan to receive all can messages，but the RXIMR is not work , see the attachment

Re: Flexcan RX FIFO problem

PetrS — Tue, 31 Mar 2020 11:27:04 GMT

Hi,

simple RX|FIFO code can be found here

https://community.nxp.com/docs/DOC-335321

When preparing MB for TX or RX while RXFIFO is enabled be sure you write to correct MBs. For example if CTRL2[RFFN]=0, MBs 0 to 7 are used by RXFIFO engine.

If you want to receive all messages (assume all ID) clear mask acceptance registers, thus incoming ID will be don't care.

BR, Petr

MPC5xxx中的主题 Flexcan RX FIFO problem

Flexcan RX FIFO problem

Re: Flexcan RX FIFO problem