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Forum Posts

Wakeup from standby with Wakeup Pin

Posted on June 25, 2014 at 13:00 I want know if is possible to wakeup the MCU(STM32F4) fromstandby power mode with only the Wakeup pin, without setting the RTC allarm. i have try this but the MCU don't wakeup. HAL_EnableDBGSta...

STM32U585 I2C SCL remains low and I2C hangs

Hi,I have two STM32L0 (slave) and STM32U585 (master) MCUs. I have no issue when Slave transmits data to Master. But, if Master transmits signal to Slave, it sends all the 9 clock pulses with address bits, but then the SCL remains low while SDA return...

ashah.16 by Associate II
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  • 4 replies
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stm32f103 startup io initialization problem

hello.this is the first time I've had this problem , I describe this problem next:1 the io initialization input is normal (this is the feature I want)2 when I power off and restart, I find that the same pin initialization input is not responding3 rep...

shan chen by Associate II
  • 1987 Views
  • 4 replies
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DS18B20 Match Rom command fail

Hi. I'm using STM32F030C8T6 MCU to communicate with multiple DS18B20. I'm using Timers to make 1us delay. I set my prescaler to 48-1. and I'm running on 48MHz clock. when i connect two sensors to my MCU, i can't read temperature, so for testing i dis...

MNoro.2 by Associate II
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  • 2 replies
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Resolved! stm32c011 in-application option byte programming

Good morning,I'm trying to program the user option bytes of the STM32C011 using the HAL. The objective of the test is to toggle the BOR bit.  static HAL_StatusTypeDef testOptionBytes() { FLASH_OBProgramInitTypeDef obInit = {0}; FLASH_OBProgra...

AndreasS by Associate
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  • 1 replies
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Vrefint and Vts very noisy with SAI active on G4

We are using an STM32G491 with TDM audio output active on SAI. When activating the 4 MHz bit-clock on SAI1_SCK_A, Vref and temperature measurement become very noisy, while externally connected ADC inputs are not affected.See attached graph for differ...