About YohannDrc

YohannDrc · 2024-07-11

Hi,I am using a custom board integrating a STM32L071kzt6 MCU and have an issue to wakeup the MCU with uart start bit detection if the MCU uart rx line was no more pullup by the device with which the MCU communicates (A FT230XS USB to RX bridge).It is...

YohannDrc · 2024-02-13

Hi,I am currently trying to receive uart message when the MCU is in stop mode on a Nucleo-L073Rz board.To do this I first wake up the mcu on uart start bit, and when the mcu receive the uart idle event.I can then treat the received message in the mai...

YohannDrc · 2023-11-14

Hi everyone,I am currently trying to create a library from STM32 Hal driver (Name of this project is Nucleol073rzHalTest).The aim for this library is to contain all pin configuration to be used in other projetcs.For this I simply create a stm32 execu...

YohannDrc · 2024-07-15

Thank you Pedro for your suggestions.For now I will just pullup the MCU uart RX pin to avoid this behaviour.I will later go deeper in your ideas.

YohannDrc · 2024-07-11

I read the STM32L07xxx/L08xxx device errata documentation.There was indeed issues with wakeup from stop mode with UART on MCU revision A and B.However the issue disappeared on current revision (1, P, Q, Z) of the MCU. The MCU I used is rev Z, so ther...

YohannDrc · 2024-07-11

Hi Pedro,Thanks for the advice, I will look at it and return to you when done.Kind regards,Yohann

YohannDrc · 2024-02-13

Hi TDK,Thank you for your answer.As I use a 20 chars long buffer, I don't think I can get overflow in data reception buffer.And all characters are well received as I can print them in HAL_UARTEx_RxEventCallback or commandTreatment functionAs you advi...

YohannDrc · 2024-01-23

I finally found out a solution.In order the project use the good HAL_UART_MspInit.I had to generate peripheral initialization as a pair of '.c/.h' files for each peripheral.It can simply be done by checking a box in the .ioc file of the library.Prjec...

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STM32L0xx UART can't wakeup MCU after RX line was in low level during stop mode

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Re: STM32L0xx UART can't wakeup MCU after RX line was in low level during stop mode

Re: STM32L0xx UART can't wakeup MCU after RX line was in low level during stop mode

Re: STM32L0xx UART can't wakeup MCU after RX line was in low level during stop mode

Re: UART Wakeup Callback called twice when receive uart message longer than 1 char

Re: Generate and use an STM32 Hal library, can't override __io_putchar