STM32 MCUs Products

Why am i not able to switch on and off DMA randomly in STM32F051R6T6TR?

i'm trying to sample 40 adc values by using dma which means i have configure adc with dma(interrupt).Time period is also a constrain which means that a value is read after every 500us.After obtaining 40 readings ,i disabled both timer and dma then se...

How can I send interrupt command via CDC in STM32?

Posted on February 12, 2018 at 08:18CDC has 3 endpoints (IN, OUT and Interrupt). I have no problem with sending messages via IN and OUT (bulks), but there is a problem when I try use interrupt endpoint (0x82).  I created similar method to USBD_CDC_T...

Hi, I am using a STM32F042K6 MCU, I tried to initialize CAN_MCR from reset mode(0x00010002) to initialization mode(0x00010001). But I found I was not able to change its value by using the code: What could be the reason? Thanks, John

Timer3 runs 2x faster than expected

Posted on August 04, 2016 at 17:11Timer3 runs 2x faster than expectedI know what many readers are thinking but read onI set my STM32F746 (DISCOVERY PCB) for SysClk=216 MHzAHB Prescaler set to �1 thus HCLK = 216 MHzAPB1 prescaler set to �4 thus PCLK1...

hi, I have a few stm32f429i discovery old version, they work by USB connection to PC (for power) or by 5v external power supply(without USB connection )

recently I bought some new version (disc1) these start working by connecting USB,but they don't start by 5v external supply without USB connection to PC,I have to connect USB connection to PC and external 5v to proper pin then it starts working , now...

My simple IWDG dont work - why?

Hi.I downloaded some IWDG example code from Keil because I will use the IWDG-feature of my STM32F107. Configurations/init are located in this procedure://__inline static void stm32_IwdgSetup (void) { static void stm32_IwdgSetup (void) {   RCC->...

How to implement a I2C communication in NUCLEO-L152 board

Hi I am a newbie to ST microcontrollers.I want to connect a simple I2C slave device to my NUCLEO-L152RE board. I also used CUBEMX to configure the I2C and generated the code.Does anyone know a simple step by step tutorial for the communication itself...

X-NUCLEO-MEMS1 function call constructs

Hi,Here is the code from CubeMX generated BSP module for hts221 sensor./** * @brief Read generic device register * * @param hts221_ctx_t* ctx: read / write interface definitions * @param uint8_t reg: register to read * @param uint8_t* d...