STM32 MCUs Products

STM32H7 failing (dying) if there is oscillation on the power supply.

We are using an STM32H743ZI in our application and just got the first prototypes. I was using a current limited power supply for initial test to protect the circuitry, however, something has caused two micros to fail so far after only a few power on ...

Hello guys, so i'm using the SPI protocol on my stm32F407, i'm trying to send a 32 bit data but the data frame is either 8bit or 16bit. i'm testing a simple Full-duplex example using SPI1. How can i remove the Delay between bytes?

Detecting when I2C bus becomes IDLE

STM32F302K8 here. According to the manual, there is a flag in the ISR to see if the bus is busy, but it does not generate an interrupt when cleared. Also the STOP condition says it is only generated while you are the master and generate it, or are ...

Hello All, I am using, STM32F446RE controller evaluation board. I want to count external pulses. I had set TIM2 as counter and started the counter. But the counter interrupt is not getting generated with the frequency we are setting the pulse.

Appending more details here,Configured TIM2 as counter. Below is the TIM2_INit code,static void MX_TIM2_Init(void){ TIM_SlaveConfigTypeDef sSlaveConfig = {0}; TIM_MasterConfigTypeDef sMasterConfig = {0}; htim2.Instance = TIM2; htim2.Init.Prescaler = ...

the STM32F103 internal oscillator tolerance is +/- 2% , From the can spec , it can have 1.58% max tolerance for oscillator . Is it possible to use the internal oscillator for the can bus?

Send 32bit data on SPI protocol

Hello,For communicating with a sensor I need to send 32 bits as a clock for my sensor. As you can see in the 8-bit data transmission an interruption occurs during sending 4 bytes which is unpleasant for my communication. I wrote a Software SPI (bit-b...

STM32F103 ADC read voltage value difference

Hello, I am uing STM32F103 MCU and I am having a small problem with the ADC. There is a 250 mV difference between the real voltage value on a pin and the value ADC gives me. When I measure the voltage on a pin it is 900 mV. But when I print out the A...