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Bosch Sensortronic's BME680 is a brand new integrated environmental sensor. It integrates temperature, pressure, humidity and gas sensors with high accuracy within a single unit. These are the examples on how to use the new driver for BME680.
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BME680 Driver Examples
These examples references two addtional drivers i2c and bme680, which are provided in the ../../extras folder.
If you plan to use one or both of this drivers in your own projects, please check the main development pages for updated versions or reported issues.
Hardware setup
There are examples using I2C with one or two sensors as well as examples using SPI with one sensor.
To run examples with one sensor as I2C slave, just use GPIO5 (SCL) and GPIO4 (SDA) to connect to the BME680 sensor's I2C interface.
If you want to run examples with two sensors, you could do this with only one bus and different I2C addresses or with two buses and the same or different I2C addresses. In later case, use GPIO16 (SCL) and GPIO14 (SDA) for the second I2C bus.
Example description
shtx_callback_i2c
In this example, only one sensor connected to I2C is used. It shows how to use a callback function to get the results of the periodic measurements. In addition, it shows how to change some optional sensor and measurement parameters. In this example, there is no error handling.
shtx_callback_i2c_two_sensors
In this example, two sensors are used which are connected to different I2C buses but with the same slave addresses. It shows how to use a callback function to get the results of the periodic measurements. In addition, it shows how to change some optional sensor and measurement parameters for both sensors differently. In this example, there is no error handling.
shtx_callback_spi
In this example, only one sensor connected to SPI is used. It shows how to use a callback function to get the results of the periodic measurements. In addition, it shows how to change some optional sensor and measurement parameters. In this example, there is no error handling.
shtx_task_one_sensor
In this example, only one sensor connected to I2C is used. It shows how to use a task in conjunction with function bme680_get_values to get the results of the periodic measurements. The task uses the vTaskDelay function to perform a periodic execution of the bme680_get_values function at the same rate as that of the periodic measurements. In this example, there is no error handling.
shtx_timer_one_sensor
In this example, only one sensor connected to I2C is used. It shows how to use a software timer and a timer callback function in conjunction with function bme680_get_values to get the results of periodic measurements. The timer callback function executes function bme680_get_values to get the results. The timer is started with same period as periodic measurements. Thus, the timer callback function is executed at same rate as periodic measurements. There is no error handling in this example.