Read BMP180 Barometric Pressure Sensor with ESP32, esp-idf and using:
- I2C h/w controller on board of ESP32
- software bit banging
The application reads in turns two BMP180 sensors, one using I2C peripheral and the other one using software bit banging (TWI - two wire interface). Measurement results obtained from the sensors are shown on serial terminal:
...
I (1223612) BMP180 TWI Read: Pressure : 99555 Pa, Altitude 148.8 m, Temperature : 21.7 oC
I (1224682) BMP180 I2C Read: Pressure : 99845 Pa, Altitude 124.4 m, Temperature : 22.3 oC
I (1224684) BMP180 TWI Read: Pressure : 99551 Pa, Altitude 148.9 m, Temperature : 21.7 oC
I (1225754) BMP180 I2C Read: Pressure : 99839 Pa, Altitude 123.8 m, Temperature : 22.3 oC
...
| Interface | SCL | SDA | Component Name |
|---|---|---|---|
| I2C | GPIO23 | GPIO22 | bmp180 |
| TWI | GPIO27 | GPIO25 | bmp180_twi |
Feel free to contribute to the project in any way you like!
If you find any issues with code or description please report them using Issues tab above.
This repository has been prepared thanks to great work of the following teams and individuals:
- Espressif team that develops and maintains esp-idf repository
- Software I2C library for ESP31B by Hristo Gochkov