esp-idf: branch release/v4.2 , commitId cd4fa46f5372a552a67452313d246d4d09d2b39f
build ways: Windows10 CMake
origin dev by: https://github.com/hamsternz/thingspeak-esp32-dht11 =========

ESP32 C SDK 驱动 DHT11 获取温湿度

DHT11      ESP32
VCC   ---> VIN
DATA  ---> GPIO4
GND   ---> GND

DHT11 with input 3~5.5v

Output:

SerialPort:with 15200

stdout:

Temperature reading 25 F temperature is -2 Humidity reading 77