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yanbe / bme280-esp-idf-i2c

Sample code for reading values from a BME280 temperature-humidity-pressure sensor, via ESP-IDF's I2C master driver, supports both normal mode and forced mode described in the datasheet. https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf
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bme280 esp-idf esp32 esp8266 i2c

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Sample code for reading values from a BME280 via ESP-IDF's I2C master driver

See main code main.c_.

About

This sample code implement procedures to read values from BME280 sensor (pressure, temperature, humidity) via ESP-IDF's I2C master driver. It supports both normal mode and forced mode described in Bosch's BME280 datasheet_, Section 3.3 Sensor modes, Page 12.

For local setup

For your local setup, connect SDI pin to GPIO 15 pin and the SCK to GPIO 2 pin as they are default ports (I2C_SDA, I2CSCL) for I2C master according to ESP32 datasheet, C.4. IO_MUX, Page 49.

Don't forget to connect SDO to Vio too. It maps device address to 0x77 (not 0x76). This is default setup for BME280 I2C as described in Bosch's BME280 datasheet_, Section 6.2 I2C Interface, Page 31.

.. _main.c: https://github.com/yanbe/bme280-esp-idf-i2c/blob/master/main/main.c .. _ESP32 datasheet: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf .. _Bosch's BME280 datasheet: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf