STM32 MCUs Products

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DMA - NDTR - data in memory?

Dear Community,I'm recently having some trouble with STM32F7 DMA (STM32F767 Nucleo, STM32CubeIDE, some HAL stuff, but using more and more direct register writes & reads).I'm using timer input capture with circular DMA from timer peripheral to memory,...

LCE by Principal II
  • 2194 Views
  • 4 replies
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RCC_DBP flag set timeout

Hi, I have a low power controller which i will use as RTC.type: STM32L031F6P7.I use a custom boardThese are the clock settings  I also notice there is no oscillating signal at PC15 . When should the LSE oscillator start? after powerup or after System...

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sde c.1 by Senior II
  • 444 Views
  • 1 replies
  • 1 kudos

STM32H7 RTC BKUP registers issue

HiWe are using the STM32H7A3ZIT6 for one of our irrigation controllers that we are developing. To check the "power cuts" time, we always save the RTC value (uint_32 seconds value) before voltage goes down, using:HAL_PWR_EnableBkUpAccess();HAL_RTCEx_B...

STM32H7 dual core - M4 SPI Issue

After configuring SPI channel on the M4 core as a read only master (while observing signals on the scope) I was not able to generate a clock while using the  HAL_SPI_Receive() functions (which returned HAL_ERROR status). When I changed the configurat...

yuri CH by Senior
  • 380 Views
  • 1 replies
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how to use just Rx pin of an uart

Hi, I have a sensor that send data over uart to a stm32f722 uC. This sensor is powered at the same time of uC. I've noticed that some times the sensor stop sending data. For example, if the code is running ok and then reboot the uC some times the sen...

Lgarb.1 by Associate II
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  • 2 replies
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STM32F767ZI UART DMA RX LOCK(STOP)

After system initialization, UART DMA Rx function is normal.When time passes, data is not received in the DMA buffer and the phenomenon is stopped.To solve the problem, we checked the normal operation by repeating the DMA initialization as shown belo...

Snam.2 by Associate
  • 870 Views
  • 4 replies
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