STM32 MCUs Products

STM32L431 VBAT issue -- CLOSED

For whatever reason, I can't delete this post. It is closed, see resolution below.--------------------------Hello. We made a board that powers the VBAT pin of a ​STM32L431RCT6 directly from a coin cell battery. The LSE and RTC work well. But we reali...

I2C bus monitor

I want to make i2c monitor that can read data sent by slave with specific address (0x42). So monitor has to capture sequence of​1. Start2. Slave address (write)3. Command byte 4. Repeated start 5. Slave address (read)And then start reading actual dat...

Stm32F4 Discovery Generate Pwm signals have different frequencies and Dac Signal with DMA

I have a sensor which generate an input signal. By using this signal rising edge , I want to generate some pwm signals and additional Dac signal from DMA which synchronize with input Signal. When I visualize signals on ossiloscope , I aware some sli...

Phase correct PWM using timer 4 of STM32F407 micorcontroller

Hi, I am using the 176 Pin STM32F407 microcontroller. I want to generate the phase correct PWM using timer 4 ch1 and ch2, so please guide me for the same. The wave form is attached for driving a dual input boost converter. The "gate driver" image is ...

What is the alternate header file for directory traversing like the #include <dirent.h> , which is supported by the stmide tool chain?

Unable to receive data on SPI, when configuring SPI1 as Master and SPI3 as Slave

Hi,I want to interface two SPI peripherals on the same STM32H743 nucleo, am configuring SPI1 as Master and other as Slave and connecting them with each other. Am transmitting in polling mode via SPI1 and receiving in interrupt mode on SPI3. I am rece...

STM32H7 SPI MOSI Signal changing before the CLK and observed the pulse

STM32H7 SPI configured as Master with the Clock Phase and Clock Polarity 0 (mode 0).  During the HAL_SPI_TransmitReceive() call, before the CLK the pulse is observed on the MOSI signal. Due to this the slave device is behaving differently. Agree the...