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DPlum · 2021-10-05

Part is STM32L4Q5CGIf configured to use PA11 and PA12 on AF 9 works as described in programming reference. When changing pins used to PB8 and PB9 CAN cannot be used and never leaves reset. On my custom board I have PA11 and PA12 in use by USB so I ca...

DPlum · 2021-10-04

DPlum · 2021-10-05

Thanks for the suggestions I should have clarified all the things tried. This started out with an issue in custom code (non-Cube) but I used HAL to reproduce the problem and is a good basis to discuss the issue from.Yes __HAL_RCC_GPIOB_CLK_ENABLE(); ...

DPlum · 2021-10-05

After further testing I have found that the issue is related to the use of alternate pins PB8 and PB9 if I move the CAN interface to PA11 and PA12 it works as documented. Do you know why I cannot move CAN to pins PB8 and PB9 as documented in the data...

DPlum · 2021-10-04

I am trying to bring up a new board and am running into a problem initializing the CAN bus. Part: STM32L4Q5CGT6PCAN baud rate 500kbpsCan Transceiver is being used. I first found this problem with custom code but it is probably easier to describe rela...

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Cannot use CAN on alternate pins

STM32L45Q CAN Bus will not leave sleep, Initialization, or reset

Re: Cannot use CAN on alternate pins

Re: STM32L45Q CAN Bus will not leave sleep, Initialization, or reset

Re: STM32L45Q CAN Bus will not leave sleep, Initialization, or reset