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how to use stm32f407 dual can communication(can1 & can2)

KHyun.1
Associate II

Hello.

I'm currently researching can communication with stm32f407vg

currently, i want to use can1 and can2 at the same time, but only one of them works.​

canfilter is used, and the test is currently in progress through timer interupt.​

maybe the can filter part is wrong, but i couldn't find the answer, so I want to ask for help.

thanks you for your help

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12 REPLIES 12

Thanks for the reply. There are two separate ADM3055E transceivers. One on each bus.

Hi, the hardware is ok. Both busses are transmitting valid CAN messages. Just that FDCAN2 is sending a wrong message which indicates that it is not using the correct buffer.

Nickelgrass
Senior

Sorry, please ignore my comments. I posted in the wrong thread! Have a similar one open in another tab and thought it was replies to that one. Can a moderator please delete my answers in this thread. Thanks.