bsapundzhiev / bmp280

Linux bmp085, bmp180, bmp280 and bme280 sensor probe driver

bmp280 device detection Linux module

bmp085, bmp180, bmp280 and bme280 i2c device detection module used alongside with latest Linux kernel driver in drivers/iio/pressure/bmp280

It may be usefull when bmp sensor is connected to diffrent i2c busses for example via i2c-tiny-usb driver or just to avoid manual detection and initialization.

Build

$ make 
$ sudo make install
$ sudo depmod -a

Configuration

$ sudo modprobe bmp280-probe

To detect sensor on startup add line "bmp280-probe" in /etc/modules or use the command:

$ echo "bmp280-probe" | sudo tee -a /etc/modules

Check device

$ dmesg | grep bmp280_probe
[    4.437764] bmp280_probe: Probing i2c adapters: [0-24]
[    4.440370] bmp280_probe: Found device: bme280 @ i2c-1 addr: 0x76

ls -l /sys/bus/iio/devices/

$ cat /sys/bus/i2c/devices/1-0076/iio:device0/name
$ cat /sys/bus/i2c/devices/1-0076/iio:device0/in_temp_input
$ cat /sys/bus/i2c/devices/1-0076/iio:device0/in_pressure_input
$ cat /sys/bus/i2c/devices/1-0076/iio:device0/in_humidityrelative_input