Nucleo_F411_ESP01

This App demonstrate Nucleo_F411RE connecting to ESP01 (ESP8266) through UART and get enviroment data by BME280 over I2C bus. the unit send the data to ThingSpeak cloud and persent it by three chatrs.

Connection wireing:

https://easyeda.com/editor#id=664e8544225641feb8eb29158b23b3a9

CubeMX settings:

float sprintf

Need to add float option in linker on project settings with sprintf() function.

TingSpeak charts:

Logic Analayzer scope trace: