STM32 MCUs Products

Why is setting up SPI to re-transmit by DMA taking too long, 1uS??

First, I would like to know if this code is correct to setup SPI to re-transmit by DMA again. GPIOA->BSRR = (1<<5); // start   DMA1->IFCR = 0x0FFFFFFF; // reset status   DMA1_Channel3->CCR &= ~( DMA_CCR_EN );   LL_DMA_SetDataLength(DMA1, LL_DMA...

SPI Mode for non standard sampling edges

Hi, i am currently working on a driver for a Chineese IC. The manufacturer recomends implementing SPI protocol over an FPGA, but for cost reasons we would like to use a MCU.The SPI protocol that the chip uses has the following configuration "Chip SPI...

SPI Bus Impedance

Hi guys, i am going to connect 2 STM32 via 3 SPI busses for high speed data transfer throughput (STM32H7 <-> STM32G4).The STM32G4 will be Master and the SCLK-frequency will be 84MHz - i will use the associated pins in the highest speed mode setting.I...

Peripheral examples for stmf32

Deat ST Hello,This my first question to you in this forum.Does ST has peripheral examples using HAL library or standard lib for STM32f4?I am installing the packs from the pack installer from Keil.Could I adapt examples for my STM32 if ST provide a g...

Check FlashErased or Readout InternalFlash ECC on STM32H7

I'm working on the STM32H7 series, and in my scenario the data to be written might be the erased-state byte (0xFF) all over the flashword. In this case I'm unsure whether or not the ECC may change.What is the idiomatic way of checking if the bytes ha...

Hello, I am using stm32f103 in my project. Software as GPIO_PinRemapConfig (GPIO_Remap_SWJ_JTAGDisable, ENABLE); I disabled it with the command. But now I can activate it back, I don't know how.

STM32 TSC is not working

I am using Group1 for shield and Group 2 and Group 3 for touch keys but the after generating the code from cube mx ​there is a problem in firmware because group 3 touch is not working and touch is detecting from the shield. Please give me any solutio...

Linux driver for TPM ST33TPHF2ESPI

HelloI'm following the instruction of https://www.st.com/resource/en/data_brief/stpm4raspi.pdf to setup the tpm driver on my embedded linux using ST33TPHF2ESPI tpm module. But unable get /dev/tpm0 and /dev/tpmrm0 present due to driver read spi failed...

Implement PWM dithering 1 bit

Hi I am working on stm32f070. The STM32F0 system clock = 48MHz,I need to set the PWM frequency on 23437Hz.Therefore, PWM resolution = 48MHz / 23437Hz = 2048 (11bit)​How to use PWM dithering technique to reach 12-bit resolution on PWM frequency 23.4KH...