STM32 MCUs Products

STM32H743 PWM

hello friends)))) I bought a new stm32H743 for familiarization and got confused how to implement PWM on HRTIM. I'm trying to do PWM on timer B. configured GPIO_PC8 to AF1 in GPIOx_AFRH. everything is fine there.HRTIM_B_PERxR==2000 HRTIM_B_CMP1xR==200...

I can read from any ADC port and output a reasonable value by changing the MX_ADC1 init code but I can't work out how to change the channel once the code is running. Is there an app note or firmware example showing how to change ADC channels? Thanks

Firmware Behaviour change after files clean up

I am working on a state machine to control a stm32f334 mcu, first state would be general initialization, the wifi initialization, waiting for stable input and some other states that are not relevant here. It was working smoothly and I wanted to commi...

STM32G491 (Flash category 4): Flash IAP programming?

Hi, I would like to re-program only some higher part of flash memory with In-Application-Programming (Chip: STM32G491 - this in RefMan is defined as "Flash category 4" device).My normal firmware e. g. is running in lower 256kB Flash.And now I want to...

STM32F439ZI first embedded flash program issue

Hi,I'm working with STM32F439ZI MCU. I setted system clock 180 MHz and as Reference Manual (RM0090) says I did:-- VOS[1:0] = 0x11-- over drive mode enabling-- 5 WS latency (6 CPU cycles)When I try to program something the first time after power up, i...

The issue with STM32H745 SPI with DMA communication with two boards.

Hello Support Team,Please find the below issue description along with the attached code. Please suggest how we can fix this issue. I have developed the SPI with DMA code for STM32H745-DISC (Discovery board). I have flashed master code on the first bo...

Can it be possible to trigger DMA using a GPIO pin in STM32?

For my application I'm using a comparator and i have set a reference voltage(threshold) for that and my application is that, if the current passes through the threshold then my comparator output should be turn on(1 or 0). I have set the comparator ou...

How to implement Full Duplex SPI communication in STM32H745 in blocking method?

I'm trying to implement SPI Full Duplex communication in NUCLEO-H745ZI-Q board by configuring CM7 as Master & CM4 as slave. I used the function HAL_SPI_TransmitReceive() in both the cores but could not get the expected result.I tried to debug and fou...

How to handle UART errors?

Hello!I'm receiving data in UART Rx with DMA and I need to make it inmunne to disconnections. Now, sometimes I can recover the communication after a disconnection, but I need it always.Using the debugger I realized that huart1.ErrorCode change its va...