STM32 MCUs Products

USART TX empty interrupt (LL)

Is there a known issue with I2C2 on the STM32F301C8T6TR using PF0 (SDA) and PF1 (SCL), the I2C1 on PB8 and PB9 is working fine. It looks like the SDA is floating regardless the 3K3 pullup, the driver is returning with a Arbitration lost.

I have tried with 3 different STM32F301C8T6 with the same result. Purchased from Mouser!

16bit ADC in STM32H745i-Discovery Board

 I am interfacing 16bit ADC in STM32H745i-Discovery Board i saw some ADC configuration videos in Youtube according to i am configured but i didn't get any ADC conversion Values i am failed where i am doing wrong can please Help me to resolve this pro...

Big char buffer declaration

Dear ST hello,I am working on a driver on STM32F429, and I have to declare 104 uint8_t buffers.In some cases I am facing an issue with memory, The buffer is overwritten by another application the buffer values change when I iterate through it the buf...

how to establish Communication between two stm32 board using uart.?

I'm using two stm32 board, one is stm32wb55-dk which is main board and another is stm32c011 which acts as companion board.I need to establish communication between both using uart to send from main board to companion.connected tx of wb to rx of c0...

Can't write to DAC's Control Register from a C++ class.

Hi,I've been having some troubles configuring DAC channels and can't seem to find what the problem is.I have a C++ class that is intended to setup and control a DAC and I can't write on the registers to do it. My class is the following (dac_test_clas...

The STM32L433 adc isnt too accurate.

Hi I have a STM32L433 processor on a 4 layer board with own ground plane, and below is circuit for VDDA input. I have set the VREF+ to 2.5v, and checked this with my meter, and its perfect (and isnt connected to anything). I placed an accurate 1.026v...

Unable to connect to STM32L151 devices

After powering STM32L151V8T6A device, I can't connect to the device. I try to connect by SWD or JTAG without success. Connect under reset doesn’t help. How can I connect the device?