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STM32 with DHT22 sensor
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README.md

STM32-DHT22-UART

This project demonstrates how to use a STM32 microcontroller with a DHT22 temperature and relative humidity sensor. Data from the sensor is transmitted asynchronously via UART and can be viewed on a serial console or in a terminal emulator.

Terminal with repeating updates to temperature and relative humidity

A STM32 Nucleo board, DHT22 sensor, and breadboard

Using Terminal Emulators

  1. Determine which tty device represents your STM32, on this system it's ttyACM0 for example
  2. Set the baud rate: stty -F /dev/ttyACM0 115200
  3. View the output: cat /dev/ttyACM0

UML Sequence Diagram

Initialize the sensor, read the data, validate the date, then send via UART

References