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AlfRomeo
Associate III
since ‎2024-10-15
‎2024-12-11

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  • 26 Posts
  • 2 Solutions
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User Activity

Framing error generated after RS485 plugging and unplugging

2024-12-04
Hello everyone, I encountered a problem while using STM32L431 for RS485 development. I used the ISO7041 isolation chip, and in the initial state, the DE pin is low, while both TX and RX are high. The current issue is that when I turn on the power, re...

RTC time greater than 24 hours

2024-12-02
Hello everyone, I am using an internal RTC on STM32L431. After running for 23:59:59 seconds, the time changes to 24:00:00 instead of 00:00:00, and the week day has not been incremented. Why is this?

ADC generates power consumption after stm32L4 enters stop mode

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...

The DMA sending function can only be called once

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...

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

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 ...
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