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Nickelgrass · 2024-12-19

Hello,I am using STM32G491 FDCAN modules 1 and 2 in bare metal. While everything works perfectly on CAN2 the interrupt on CAN1 is constantly disabled. And I do not mean the flags but the actual interrupt does not fire. Each time the interrupt for CAN...

Nickelgrass · 2024-12-11

Hello,I implemented a FDCAN in bare metal on the STM32G491 that works on FDCAN1 (with one unrelated problem). Now I need the second one too. So when I try to send over FDCAN2 only garbage comes out on the CAN bus. Yet the CRC is correct so it is actu...

Nickelgrass · 2024-06-13

Hello,I am trying to implement a USB HID keyboard on an STM32F042 without HAL or LL, just simple register defs. I took an example code generated in CubeIDE with HAL and a few other examples. I extended the example with HAL to also implement the LEDs ...

Nickelgrass · 2024-04-20

Hello,I have a strange problem that I already lost a lot of hair over. I am using cubeIDE with an stlink v2 (STM32G441 with a blank C/C++ project and CMSIS). All run very well until today. So I am sure the code itself is ok.If I compile the project b...

Nickelgrass · 2024-03-28

Hello,I am using a STM32G491 in LQFP48 package. In the RM0440 rev8 page 2122 the package code for LQFP48 is 01011. But I read 01001 which would be LQFP32. The device id 0x479 is correct. Is there a reason for this? Thanks.

Nickelgrass · 2024-12-19

Found the problem. Was unrelated to the interrupt. Why is not possible to delete useless posts?

Nickelgrass · 2024-12-11

The offset for the second FDCAN in the shared FDRAM. In the AN5348 or in the RM0440 it describes the start and end address for each FDCAN instance in the FDRAM. But it does not give me information on where this offset (or start addess of FDCAN2) need...

Nickelgrass · 2024-12-11

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.

Nickelgrass · 2024-12-11

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 · 2024-12-11

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

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