STM32F105 can stop working after error

sifourquier · ‎2024-01-08

Hello

I have a code use CAN2 on a stm32F105 he work fine if the CAN bus have not disturbance

But if i have to many disturbance for exemple if i make a short circuit bethen CANH and CANL when i remove the short circuit the CAN no restart to send data. I need stop and restart CAN

HAL_CAN_Stop(&hcan2);

HAL_CAN_Start(&hcan2);

Then he work but i lose data during this time

during bug

HAL_CAN_GetTxMailboxesFreeLevel(&hcan2) return 0

hcan2.ErrorCode are equal to 0

hcan2.Instance->TSR -> have the bit CAN_TSR_TERR0 set to 1 but if i call HAL_CAN_AbortTxRequest(&hcan2,CAN_TX_MAILBOX0);

CAN_TSR_TERR0 return to 0 but CAN no restart

Can you help me for have a CAN work every time?

SofLit · ‎2024-01-09

Hello,

You need to enable the automatic bus off management by Hardware: .Init.AutoBusOff= ENABLE

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View solution in original post

SofLit · ‎2024-01-09

Hello,

You need to enable the automatic bus off management by Hardware: .Init.AutoBusOff= ENABLE

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
PS:
1 - This is NOT an online support (https://ols.st.com) but a collaborative space.
2 - Please be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help.