STM32 MCUs Products

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...

STM32L452CC and STM32L4Q5CGU6, issue with USART

My colleagues went to my office and reported that the STM32L452CC with the USART interface (5MHz and 10MHz) was working fine but had to use STM32L4Q5CG due to stock usage, but it failed at 10MHz but working fine 5MHz.I have explored errata, datasheet...

Looking for the source code for the demonstration program, blinking LEDs, on the Nucleo STM32F413ZH

I'm new to STM32 and I just got my first Nucleo board. There is a program on board that blinks the red LED quickly. If I press the user button it will switch to the blue LED blinking at medium speed and then the green LED at slow speed then back to r...

Interference between GPDMA channels on STM32U575

Hello,I'm trying to configure the GPDMA1 to transfer conversion results from ADC1 and ADC4 to two results buffers using two separate GPDMA1 channels on a STM32U575. The DMA channels are both configured as 'Standard Request Mode' with 'Circular Mode' ...

Help with understanding UART interface

I have a device made of two modules. Each module has its own ST microcontroller, family is STM32L476. They are connected together with a cable of 2-2.5 meter coated, most likely, with a silicone tube.I need to make the two microcontrollers communicat...