STM32 MCUs Products

UART Transmission - Why one MCU's UART GPIO pin state(Pull up) during the initialization impacting the Receiving/Transmitting or wake up capability of MCU2, connected over UART?

Project Details:The project consists of two STM32 MCUs connected over UART (without any external pull up resistors). One STM32L4 MCU (LPUART1) acts as an AT master and other STM32L0 MCU (UART 1) acts as an AT slave. AT slave is configured to wake up...

HAL_ADC_ConvCpltCallback not firing after wakeup from STOP2

For burst sampling, want to go to STOP2, wakeup, start an ADC conversion in DMA mode, go to SLEEP and wait for the conversion complete interrupt as wakeup source. This works without problems if I only go to SLEEP in both steps.If I initiate ADC conve...

Not getting SPI connection between OV5642

The setup was tested with a arduino platform with the Arducam's github code. The entire working of Camera right from Capturing images to videos from the module(OV5642).Now I want to migrate to STM controller with the same camera module.I'm using STM3...

I am turning on/off a LED using HAL_GPIO_WritePin() but still one of the LED showing dim even though its being RESET. any idea?

I have a array declared as: char* arrs[20][30]; I have filled up this array with name and value and now I must compare for example, the first element of arrs [] value and the third element of arrs[] value. How can I do this?

I have tried to use strcmp and have also tried (arrs[0] == arrj[1][8]) with no luck. My goal is to check if the corresponding values are equal. (for reference: arrs[0] = freq :100kHz and arrj[1] = freq: 100kHz). I just wanted to see the values are e...

How can I identify the problem that my display cannot go to 60 Fps?

I am developing a TFT display with parallel RGB interface on a STM32H723 microcontroller. The screen has a resolution of 800x480 at 24bpp, which with the porches is approximately 1096x535. With a pixel rate of 33 MHz, it should achieve a frame rate o...

I want to use P9813 with STM32H750VBT6 how to do it or have an example?

How to solve this hardfault concerning memory access restriction?

The code goes toHAL_I2S_Receive_DMA at __HAL_UNLOCK(hi2s);andvoid HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma){ uint32_t tmpisr; __IO uint32_t count = 0; uint32_t timeout = SystemCoreClock / 9600; /* calculate DMA base and stream number */ DMA_Base_Re...

STM32F4 Nucleo board TIM1 stays high after DMA is finished

I'm using DMA with TIM1 to drive a string of WS2812B LEDs. I am closely following a tutorial called Controlling Neopixels with STM32 on Digikey (I cannot add links due to the age of my account) with some adjustments, with my ARR being 89, my clock be...