STM32 MCUs Products

How do I configure MCU as an I2C slave device?

Remark : I am asking this question again, since even after trying multiple times on my own, and asking on other platforms, nobody has answered it yet. I can't figure out how am I supposed to configure as slave. So sorry for that. I am not able to del...

What "EXTI" stands for ?

Hi AllAbout EXTI :In some stm reference manual about "EXTI" i read some strange things : For example:In STM32f070 Ref. manual "EXTI" stands for " Extended Interrupt/event Controller".In STM32f407 Ref. manual "EXTI" stands for " External Interrupt/eve...

I2C communication with multiple slaves

Hi guys may I ask for your inputs on the I2C communication. I am using STM32F103C8 MCU with 2 slaves on the I2C bus. 1st slave is PCF8574 IO expander and 2nd slave is MCP4725 DAC. I'm using CubeMX to generate my codes. What I wanted to do is use ...

Hi friends I have a problem with SRAM. After a short time, the memory is cleared

SPI non-DMA max speed ?

I am communicating with a TFT LCD and trying to speed things a little bit. At the moment I dont have DMA library written, so I am using standard SPI mode.I configured the SPI clock as 5Mhz on STM32F407 mcu. My main clock is PLL on 96Mhz. With APB2 = ...

Facing issue with openocd init failed. Using STM32F030 Disco development Board.

Open On-Chip Debugger 0.10.0+dev-00021-g524e8c8 (2019-04-12-08:48)Licensed under GNU GPL v2For bug reports, read http://openocd.org/doc/doxygen/bugs.htmlsrst_only separate srst_nogate srst_open_drain connect_assert_srstInfo : The selected transport t...

Using STM32F072VB..USART4 with interrupt..unable to read the receive buffer in interrupt routine...please see the code snippet... I trying to commpare p[0] & p[1]....to do the following operation in my code...

uint8_t p[2]={0,0}; /// receive buffervoid USART3_4_IRQHandler(void){ /* USER CODE BEGIN USART3_4_IRQn 0 */      /* USER CODE END USART3_4_IRQn 0 */      HAL_UART_IRQHandler(&huart4);      /* USER CODE BEGIN USART3_4_IRQn 1 */      HAL_UART_Receive_I...

Hey guys, I have a question regarding the STM32H745 (Nucleo-144 board). I wanna output data on the DAC using the DMA, but it is not working. Iam using the Cortex-M7 core, the DAC is triggered by Timer 8 trigger out event. Any hints? Greets

during the initilaztion code , my port pins are misbehaving. how to over these problem?