CAN-Bus Setup for NUCLEO-F042K6

[MBoes.1]

Hi,

I try to get the CAN BUS communication working on my NUCLEO-F042K6 dev Board. I Used the instrucions attached in the PDF.

First I used the Loop-Back Mode to test CAN communication. I have my transmitting messages in the main loop they only execute once and not in a 500ms interval as I intend. The receiving messages are all the time 0.

I tried to use the normal mode and attached a CAN-Transceiver (TJA1050 NXP)

but I can not receive or send any messages. Maybe I configured the clock wrong?

I attached the main.c file and a picture of my clock and CAN configuration.

Many thanks

Moritz

[JoniS]

Where do you configure the Can gpio pins? Also if you don't have canbus to tap into, you should enable internal pullups for the can GPIO's to make it reliable.​

[MBoes.1]

Hi thanks for the fast answer. I configured the pins in CubeMX (see image attached).

[JoniS]

Main.c file from opening post does not contain any configuration for pa11/pa12 pins or do I miss it?​

[MBoes.1]

I thought this is done automatically by CubeMX when I enable CAN communication?

[MBoes.1]

Hi thanks for your help mate ;)