CAN on STM32F429-DISCO board

[Vaclav Zajic]

Posted on March 25, 2018 at 16:45

Hello, I have question about CAN on STM32F429-DISCO board.

I found that CAN1 is shared with display control and CAN2 with on-chip debugger. In comments for this video (

/external-link.jspa?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D4fYoXGiIdDs

) they recommend to disconnect C53 in order for CAN2 to work. In one discussion forum I found that it will be then possible to upload program via ST-link but it will not possible to debug. Is it correct? Thanks, Vaclav

null

[T J]

Posted on March 25, 2018 at 17:11

try it ...

don't forget to pull up the Rxpin if here is no line driver.

otherwse the processor will not progress beyond InitCAN

[Vaclav Zajic]

Posted on March 26, 2018 at 16:28

Hello, I tried to remove C53 and pull upthe Rx pin via 10k resistor but it still does not work. Vaclav

[T J]

Posted on March 27, 2018 at 01:41

I guess you have to do what I did.

I bought a CanDo unit from UK and started it transmitting every second, then I worked on the receiver first.

then I up'd the transmission to every 10mS, it worked like a dream at 250KHz.

then I worked on the transmitter.

It may be too difficult on that board, try a nucleo board, well recommended.

(I make my own boards)