[riot-notifications] [RIOT-OS/RIOT] can stm32: add a driver for STM32 bxCAN peripheral (#6178)

Sebastian Meiling notifications at github.com
Mon Mar 25 14:55:51 CET 2019

Hi @vincent-d we tested again with your fix for STM F1 and it looks a bit better but also weird in other places. We have an oscilloscope capable of understanding CAN and when we use the nucleo-F1 and send something the osci can see the correct data and stuff but also errors stating "Missing ACK". However connecting 2 Nucleo F1s we only see error frames, also when using a CAN Tx/Rx to CAN High/Low translation module we only see error frames. So it seems that the sender is somehow detecting an error right from the start, maybe because the RX line is hold up (or down) incorrectly.

@MrKevinWeiss had similar problems when using I2C on the F1 because of missing pull ups (or downs) on the signal lines, maybe that's the problem here, too. 

@MrKevinWeiss what did you do or try to make the I2C work on the F1?

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