STM32 MCUs Products

Global variables losing their contents, using Keil and STM32l031k6

Dear Community,I am encountering a strange behavior, where some of my global variables in main.c file are losing their contents (even when I declare them as static). They show the initial values which are 0. I am using Keil with optimization level O3...

SDRAM made IS42S16400J(6TL-1) trouble double sending

when I am using frequency 266mhz after that I am sending the string Hello world in 0XC000000 0 but in address, 0xC0000080 appears again, can you help me with the case?thanks

F411 timer1 __HAL_TIM_GET_COUNTER always return 0.

I have an F411 PCB board, for which I want to use timer 1 to generate micro-second delay.This is the init code:static void MX_TIM1_Init(void) {   /* USER CODE BEGIN TIM1_Init 0 */   /* USER CODE END TIM1_Init 0 */   TIM_ClockConfigTypeDef sCloc...

Best way to handle SPI TX when using DMA RX in SPI slave in STM32F767

I have studied how to use SPI DMA. The examples from STM32 project shows independent TX/RX.I need to handle the 16-bit data as a register. When the slave receives 16-bit data, it should echo it right away for example.​Now I can receive DMA RX transmi...

I need to PWM two RGB LEDs to control the colour output, needing a recommendation on a basic processor (e.g. low power, 48 pins, TQFP) with a pair of three output compare pins. The part selector does not have a way of sorting on this basis.

Generate a pulse in the STM32H7 SPI's SS line every 64 bits

I want to communicate with an SPI slave whose high level protocol states that each command is 64 bits, and that the SS line must be de-asserted and asserted in between commands. I want to send to it 2 commands as quick as possible, so I need to asser...

the st mcu I purchased from smt factory have different markings following the positioning holes. why? STM32F103RCT6

I purchased two batches of devicess from the same supplier, different positioning holes on them, and the markings seem to be different. Is that normal? Has anyone purchased components from this  OnePcba Co., Limited smt factory

How to read Data with I2C from 3 Byte register?

Hello, I am new to STM32 so I am currently try get the basic done. I want to receive like written in the title, the temperature data from the BMP388 sensor. Therefore I looked up the Datasheet and found out that I need following registers.#define SLA...