STM32 MCUs Products

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Resolved! Wake-up from RTC-alarm works only once

I am trying to set RTC-alarm event to wake up an STM32F103C8T6 from sleep-mode (not standby, not stop) and it works once, but subsequent alarms never wake the MCU up. Nothing I've tried seems to work and I no longer have any idea how to fix this.The ...

Is it possible to use analog watchdog without adc interrupt?

I am thinking of turning on ADC with DMA when analog watchdog detect certain level of signal. Then I would like to turn on ADC with only watchdog first and when LevelOutOfWindowCallback() is called ADC with DMA starts. I tried code below but it didn'...

SShir.2 by Associate II
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  • 2 replies
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Resolved! Trouble with multiple ADCs and DMA

I'm trying to get ADC values from multiple channels of ADC1 of STM32F103C8T6 using DMA where conversion is triggered by TIM3 every 1ms. However, I'm not seeing the right values. I tried the polling mode and that worked fine. Here is the main function...

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remarks about ST quality of education

Hello,My goal is to evaluate several ARM Cortex-M4F chip manufactures and select the one that best fits my needs for building IoT devices. I will admit that I am on the learning curve and that I’m doing this on my spare time. I’ve read a lot of books...

gdori.1 by Associate II
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  • 5 replies
  • 1 kudos

Hard fault on SPI write DR register

I have a STM32L412 on a nucleo board. In the debugger, the processor gets a hard fault after a random period of time. I have narrowed this down to when my app writes to the SPI DR register. Most of the time, this works ok (I can drive a TFT display),...

SLevi.1 by Associate III
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  • 7 replies
  • 0 kudos

Resolved! GPIO IRQ call back handle pin - PA6 ,PI-6 ,Pj6

I am using STM32H750 MCU . I configured 14 GPIO as interrupt and handle in HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) function. In few GPIO pin number is same and different port .(PA6 , PI6 and PJ6).How to find proper interrupt PIN?