STM32 MCUs products

TIMER Interrupt and Other Interrupt

Hello All, I am progressing toward my goal. I am bit banging a GPIO port every 2 uS based on a Byte buffer. I can not use SPI because I need to send a predefine number of bit that is not 8 aligned. So I use a timer and every UIF event I reset the GPI...

Resolved! I have a problem with the interrupt callback. The interrupt event is correctly detected but when the code enter into the callback function it excecute just the first line of the code wrot between the curly brackets.

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){ if(GPIO_Pin == LVMS_DETECT_Pin) { HAL_GPIO_WritePin(AMS_LED_GPIO_Port, AMS_LED_Pin, GPIO_PIN_SET); HAL_Delay(2000); HAL_GPIO_WritePin(AMS_LED_GPIO_Port, AMS_LED_Pin, GPIO_PIN_RESET); }}When the trigg...

Resolved! hdma_tim1_ch1.XferCpltCallback = TransferCompleteCallback; IS NOT TRIGGERIING

I am transfering data array from an array to PWM register of TIM1.int16_t sin_table[20]= { 0, 39, 77, 113, 147, 177, 202, 223, 238,247, 250, 247, 238, 223, 202, 177, 147, 113, 77, 39};HAL_TIM_PWM_Start_DMA(&htim1, TIM_CHANNEL_1, (uint32_t *)sin_table...

Resolved! STM32H7 with eMMC and USB Mass Storage Class electronics/software question

Hello everyone! I have a very important question about a PCB design that I'm making.I basically have a PCB with a bunch of sensors, a 4Gb eMMC memory and a USB-C connector. Here's the related schematics : - Power section : - Microcontroller (I'm sorr...

Bootloader DFU on STM32F439ZITx

Hi everyone, I'm developing a bootloader that works like this. I was inspired by the example: https://github.com/pramodk51/bootloader_for_stm32f4. I developed this initially on Nucleo F439ZI for the test phase and I managed to implement it with the ...

USART interrupt handling in Rust

Hi, I'm new to embedded (as in one week old) and am trying to build a small system to do a few things for an optical product we're building: mainly temp measurement (Omega SA1-RTD with MAX31865) and LED management for optical lasers. Currently I have...

Resolved! Syncronous Timers

Hi,I'm running two timers on STM32F303 which do square wave output on two hardware pins. They are clocked by the 72MHz internal clock. They count down to 0 and reload from ARR register, which sets the output frequency. The two timers run perfectly sy...

Resolved! memcpy in ISR Context when another memcpy() was already running on main thread or another ISR

Is it safe to use memcpy() in an ISR when another memcpy() was already running on main thread or another ISR?I am getting conflicting info on web about using memcpy() in an ISR to copy data between two uint32_t buffers.MCU: STM32H723CubeIDE V: 1.16.0

Help regarding proper interrupt configuration for PWM and DMA

Hello !I am using DMA with pwm and working on unipolar SPWM.i have configured DMA with an array of pwm and is working fine. i am trying to get the interrupt after either each DMA transfer or after the reload of ARR register. According to the document...

STM32F4 LoRa E220-400T30S Communication

I got 2 STM32F446VET7 MCU board and I am trying to communicate each other with LoRa E220-400T30S.I cannot found any usefull libraries so I am trying to write one.I can communicate with modules from UART and setting configuration parameters.Both E22 m...