STM32 MCUs Products

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...

The issue in stm32 encoder mode.

Hi, I'm using STM32F103C8T6.When i used encoder mode on TIM3 and 4, I found that it's really unstable, when I restart or reset the microcontroller, it often can not read the encoder data (about 3/5 times). I measured the voltage on these timers's pin...

Is there anyway to calibrate ADC in STM32f429ZI MCU?

HiI am getting too much noise in my signal as soon as I acquire it. The oscilloscope screenshot shown below is the actual signal. Below is the signal shown after acquisition through ADC. I have found no instruction for ADC calibration. What else can ...

How Can I Code For Boot-loader In STM32F030K6T6 Using I2C Protocol With Anther Board of STM32F030K6T6???

Hello , I Am Working With Two STM32F030K6T6 Board ,Which is Used As a Boot-loader application With I2C protocol. So I Can Communicate Small Data But Some How I Can Not Communicate A Long Data To Transmitted or Received From Master To Slave Or Slave T...