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Need some help with STM32L4 RTC

I have a very simple example of using the RTC.  My trouble is I never get an interrupt when the alarm time comes. Clearly there is something very basic I am not getting quite right.  Many, if not all of the examples mentioned in this forum and includ...

Clyde_S by Associate III
  • 1459 Views
  • 5 replies
  • 0 kudos

Problems with DMA in Ping Pong buffer schema

Hello everyone i am quite stuck and i want to se if you have any idea.I am making a project wich has 3 devices. - ESP32 wich receive from bluetooth an audio stream- Nucleo F401Re wich receive from the ESP32 via I2S the audio and then process it.- MAX...

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Resolved! Which is best STM32 MCU for fast driving of GPIO

I need fastest MCU that can drive GPIO pins but not with timers or DMA, just from source. I need to take fast data from a FPGA device. One of determination is max frequency of toggling pin:I try STM32H562 to toggle pin mode max frequency is around 31...

Brussl by Associate II
  • 2859 Views
  • 10 replies
  • 11 kudos

Using CYCCNT in STM32G491RE

Hi every oneI want to use DWT->CYCCNT in my software for STM32G491RE. I used these 2 lines to enable it:CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk; But when I see with the debugger it seems that it does not wr...

Resolved! Problem with TIM1 overflow interrupt for STM32G0

Hello,I'm studing timer, and I wanna raise an interrupt every second using the Timer1.I write this code in main:rcc->APBENR2 |= RCC_APBENR2_TIM1EN_Msk; //Enable Timer1 clocktimer->CNT = 0;timer->ARR = 1000;// up to 1000timer->PSC |= 16000 - 1;//actua...

dmrsim by Associate III
  • 1220 Views
  • 3 replies
  • 2 kudos

Resolved! There is UART BUG on STM32F446RCT6

STM32CUBEIDE:  version 1.14.1PA0-WKUP ------> UART4_TXPA1 ------> UART4_RXOn a new project when enabling the UART4 with interrupt on receive ,everything is working normal .But once I enable PH1 pin as a GPIO_OUTPUT the UART is not transmitting or rec...

Mugtaba by Associate II
  • 1492 Views
  • 7 replies
  • 4 kudos

Resolved! STM32H7 Input Capture Measurement Offset

I am am trying to assess the accuracy of the input capture measurements by capturing a stable periodic pulse, setting the output compare on another channel of the same timer to the measurement, and then measuring the offset on a scope. It appears the...

Tkmn by Associate II
  • 4500 Views
  • 14 replies
  • 6 kudos

DMAMUX transition latency

Hello,I am using DMAMUX(dm) chaining, that means there are n dm channels and the previous is generating an event for the next dm channel as a sync input. I noticed that there is a latency in the transition of one dm channel to the next one. For examp...