STM32 UART: Register Configuration, Transmission and Reception

This tutorial will teach you have to configure UART (USART) registers of an STM32 microcontroller to get the UART peripheral up and running. The tutorial will then show how to write transmission and reception functions for the UART peripheral to enable communication between the microcontroller and other devices using this serial protocol. Finally, the tutorial will demonstrate how the microcontroller communicates using UART, transmitting data to, and receiving data from a computer.

The tutorial covers the registers in sufficient detail to help you understand why a specific bit is set or cleared in the registers.

The microcontroller used is the STM32L432KC but the registers, programming, and configuration is the same (or similar) across the stm32 boards.

Source code for this tutorial is available at:

Timestamps:
00:00 - Pin Configuration
03:25 - Control Register 1
08:57 - Control Register 2
11:23 - Control Register 3
14:47 - Setting Baud Rate
15:58 - Enabling The Peripheral
16:22 - Receiving Data
17:31 - Transmitting Data
18:54 - Demonstration Of The Driver

[sumedhburbure]

Great video! Very informative! Looking forward to more register level programming tutorials!

[adammontgomery]

This is excellent! Most others are using cubeide which is fine but more stuff to learn. I like to just look at the datasheets although these are a bit gnarly.

[gepeto]

For calculating the baud rate... why the input frequency is 4MHz when USART1 is connected to ABP2 which frequency is 80MHz?

[sudheerkumar]

Very very good sir
Plz make more videos, on UART, SPI, I2C, CANN, EXTRA by St link, and stlink v2

[quangdat]

please take more video about STM32 Bare metal

[MoleRat]

The Mic quality though! ASMring into my ear

[h_silochi]

hello, a very good job, please continue making videos, do you have any community to join ?like discord or something