About Ivo

Ivo · 2021-07-21

I'm trying standard CAN communication from a STM32H743 Nucleo board, with an MCP2551 CAN transceiver connected to PA11/PA12. However, I'm not able to transmit anything.With this same transceiver circuit, I am able to transmit CAN frames when connecte...

Ivo · 2020-12-02

The processor never wakes up from STOP1 mode and I do not know why.Reading RTC time and date works, so I know the RTC clock is running. With debugger (using HAL_EnableDBGStopmode()), I notice that the firmware is stuck in __WFI()I'm using STM32Cube_F...

Ivo · 2021-07-22

Thanks Slawek. Unfortunately with your project I'm also getting transmission failures.I assume it works for you; would you mind telling me which CAN transceiver you're using ?Best regards,Ivo.

Ivo · 2020-12-03

After updating to STM32Cube_FW_L4_V1.16.0, that is.

Ivo · 2020-12-03

It seems like this was a bug in the STM32Cube_FW_L4_V1.13.0 that I was using; after updating to STM32Cube_FW_L4_V1.13.0, I'm getting interrupts.In V1.13.0, the ST's HAL library was doing " __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_EVENT();" in HAL_RTCEx_Se...

Ivo · 2020-12-03

No, without entering STOP1 mode, interrupt also does not fire.Reading out time and date every second while waiting in vain for the interrupt does see the RTC time advancing every second.But HAL_RTCEx_GetWakeUpTimer() stays as-is.

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