This is the documentation page for the Android legacy components of the sensors-hal iio.
1> clone this repository into desired folder (i.e. hardware/st/sensors-hal):
git clone https://github.com/STMicroelectronics/st-mems-android-linux-sensors-hal.git hardware/st/sensors-hal2> modify the uevent rules file (i.e. device/<vendor>/<board>/ueventd.rc) by adding these lines:
#common iio char devices
/dev/iio:device* 0666 system system
#sensors common
/sys/bus/iio/devices/iio:device* buffer/enable 0666 system system
/sys/bus/iio/devices/iio:device* buffer/length 0666 system system
/sys/bus/iio/devices/iio:device* sampling_frequency 0666 system system
/sys/bus/iio/devices/iio:device* hwfifo_flush 0666 system system
/sys/bus/iio/devices/iio:device* hwfifo_enabled 0666 system system
/sys/bus/iio/devices/iio:device* hwfifo_watermark 0666 system system
/sys/bus/iio/devices/iio:device* injection_mode 0666 system system
/sys/bus/iio/devices/iio:device* current_timestamp_clock 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_timestamp_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_count_en 0666 system system
#accelerometer sensor
/sys/bus/iio/devices/iio:device* in_accel_x_scale 0666 system system
/sys/bus/iio/devices/iio:device* in_accel_y_scale 0666 system system
/sys/bus/iio/devices/iio:device* in_accel_z_scale 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_accel_x_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_accel_y_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_accel_z_en 0666 system system
#gyroscope sensor
/sys/bus/iio/devices/iio:device* in_anglvel_x_scale 0666 system system
/sys/bus/iio/devices/iio:device* in_anglvel_y_scale 0666 system system
/sys/bus/iio/devices/iio:device* in_anglvel_z_scale 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_anglvel_x_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_anglvel_y_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_anglvel_z_en 0666 system system
#magnetometer sensor
/sys/bus/iio/devices/iio:device* in_magn_x_scale 0666 system system
/sys/bus/iio/devices/iio:device* in_magn_y_scale 0666 system system
/sys/bus/iio/devices/iio:device* in_magn_z_scale 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_magn_x_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_magn_y_en 0666 system system
/sys/bus/iio/devices/iio:device* scan_elements/in_magn_z_en 0666 system system
#step counter sensor
/sys/bus/iio/devices/iio:device* scan_elements/in_step_counter_en 0666 system system
/sys/bus/iio/devices/iio:device* max_delivery_rate 0666 system system
#temperature sensor
/sys/bus/iio/devices/iio:device* scan_elements/in_temp_en 0666 system system
#gesture sensor
/sys/bus/iio/devices/iio:device* scan_elements/in_gesture_en 0666 system system
3> modify the device makefile (i.e. device/<vendor>/<board>/device.mk) by adding these lines:
# Build stm-sensors-hal in legacy mode
PRODUCT_PACKAGES += \
[email protected] \
[email protected] \
sensors.default
# Copy sensors config file(s)
PRODUCT_COPY_FILES += \
frameworks/native/data/etc/android.hardware.sensor.accelerometer.xml:system/etc/permissions/android.hardware.sensor.accelerometer.xml \
frameworks/native/data/etc/android.hardware.sensor.ambient_temperature.xml:system/etc/permissions/android.hardware.sensor.ambient_temperature.xml \
frameworks/native/data/etc/android.hardware.sensor.compass.xml:system/etc/permissions/android.hardware.sensor.compass.xml \
frameworks/native/data/etc/android.hardware.sensor.gyroscope.xml:system/etc/permissions/android.hardware.sensor.gyroscope.xml \
frameworks/native/data/etc/android.hardware.sensor.hifi_sensors.xml:system/etc/permissions/android.hardware.sensor.hifi_sensors.xml \
frameworks/native/data/etc/android.hardware.sensor.relative_humidity.xml:system/etc/permissions/android.hardware.sensor.relative_humidity.xml \
frameworks/native/data/etc/android.hardware.sensor.stepcounter.xml:system/etc/permissions/android.hardware.sensor.stepcounter.xml \
frameworks/native/data/etc/android.hardware.sensor.stepdetector.xml:system/etc/permissions/android.hardware.sensor.stepdetector.xml4> create new manifest.xml file that describe hal service (i.e. device/<vendor>/<board>/stm-sensors-hal/manifest.xml) with this content:
<manifest version="1.0" type="device">
<hal format="hidl">
<name>android.hardware.sensors</name>
<transport>hwbinder</transport>
<version>1.0</version>
<interface>
<name>ISensors</name>
<instance>default</instance>
</interface>
</hal>
</manifest>
5> modify the device board config (i.e. device/<vendor>/<board>/BoardConfig.mk) by adding these lines:
DEVICE_MANIFEST_FILE += device/<vendor>/<board>/stm-sensors-hal/manifest.xml6> build aosp as described into official documentation.
3> modify the device makefile (i.e. device/<vendor>/<board>/device.mk) by adding these lines:
# Build stm-sensors-hal in legacy mode
PRODUCT_PACKAGES += \
sensors.default
# Copy sensors config file(s)
PRODUCT_COPY_FILES += \
frameworks/native/data/etc/android.hardware.sensor.accelerometer.xml:system/etc/permissions/android.hardware.sensor.accelerometer.xml \
frameworks/native/data/etc/android.hardware.sensor.ambient_temperature.xml:system/etc/permissions/android.hardware.sensor.ambient_temperature.xml \
frameworks/native/data/etc/android.hardware.sensor.compass.xml:system/etc/permissions/android.hardware.sensor.compass.xml \
frameworks/native/data/etc/android.hardware.sensor.gyroscope.xml:system/etc/permissions/android.hardware.sensor.gyroscope.xml \
frameworks/native/data/etc/android.hardware.sensor.hifi_sensors.xml:system/etc/permissions/android.hardware.sensor.hifi_sensors.xml \
frameworks/native/data/etc/android.hardware.sensor.relative_humidity.xml:system/etc/permissions/android.hardware.sensor.relative_humidity.xml \
frameworks/native/data/etc/android.hardware.sensor.stepcounter.xml:system/etc/permissions/android.hardware.sensor.stepcounter.xml \
frameworks/native/data/etc/android.hardware.sensor.stepdetector.xml:system/etc/permissions/android.hardware.sensor.stepdetector.xml4> build aosp as described into official documentation.