About AlfRomeo

AlfRomeo · 2024-11-21

I use STM32L431 to enter STOP1 mode, the original power consumption is 53uA. Before entering stop mode, I call HAL_ADC_DeInit(&hadc1) to disable ADC, and call MX_ADC1_Init() to re-enable ADC after exiting STOP1 mode. The measured power consumption is...

AlfRomeo · 2024-11-14

Gradually debug the DMA send function, HAL-UART Transmit DMA, and find that the function will judge a status bit of the serial port handle, gState. It will only send normally when huart ->gState==HAL UART State READY,And the reason why the first tran...

AlfRomeo · 2024-10-31

Can STM32L431 configure the RX of the serial port to EXTI wake-up in STOP2 mode? Why can't I wake up? And idle interrupts cannot be used either. The manual states that the EXTI and RX pins have been connected together in hardware, but the STOP2 mode ...

AlfRomeo · 2024-10-15

Originally posted as a reply in this old thread:https://community.st.com/t5/stm32-mcus-products/using-sdmmc-sdio-and-fatfs-for-reading-sd-card-for-stm32l471vgt6/m-p/690770 How did you solve it in the end? I also encountered this problem

AlfRomeo · 2024-11-15

DMA transmission should not have been completed. The number of bytes I sent was 114, but I noticed that there were only 10 bytes of data in the TDR register, and the TC bit was 0. Then, when the HAL_UART_Transmit_DMA function was executed, gState was...

AlfRomeo · 2024-11-14

The flag bit huart ->gState will call HAL_UART_IRQHandler() in the serial port interrupt function USART3_IRQHandler(). In this function, UART_EndTransmit_IT() will be called, and the huart ->gState will be cleared in UART_EndTransmit_IT(). Now I will...

AlfRomeo · 2024-11-05

I set rxAct to 1 in the EXTI interrupt callback function, prove that the serial port is activated, and then detect the state of the rxAct flag in the inner while loop, if it is always 1, it will not exit in the inner while loop, and it will not enter...

AlfRomeo · 2024-11-04

int main() { while (1) { while (bleAppConfig.rxAct) { } SwithToExti(); HAL_SuspendTick(); HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI); } } void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) { if ((GPIO_Pin == BLE_RX_Pin)...

AlfRomeo · 2024-11-03

External EXTI can be used independently, but when the RX configuration of the serial port is set to EXTI, there will be problems

User statistics

User Activity

ADC generates power consumption after stm32L4 enters stop mode

The DMA sending function can only be called once

Can STM32L431 configure the RX of the serial port to EXTI wake-up in STOP2 mode?

STM32L431 SDMMC not working after STOP2

Re: The DMA sending function can only be called once

Re: The DMA sending function can only be called once

Re: Can STM32L431 configure the RX of the serial port to EXTI wake-up in STOP2 mode?

Re: Can STM32L431 configure the RX of the serial port to EXTI wake-up in STOP2 mode?

Re: Can STM32L431 configure the RX of the serial port to EXTI wake-up in STOP2 mode?