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Diffstat (limited to 'modules/sensors/dynamic_sensor/README.md')
| -rw-r--r-- | modules/sensors/dynamic_sensor/README.md | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/modules/sensors/dynamic_sensor/README.md b/modules/sensors/dynamic_sensor/README.md index 5d5bd6d3..8af15a90 100644 --- a/modules/sensors/dynamic_sensor/README.md +++ b/modules/sensors/dynamic_sensor/README.md @@ -11,9 +11,9 @@ A few files need to be modified to add dynamic sensor support to a device. The dynamic sensor HAL must be enabled in the device product makefile and in the -sensor sub-HAL configuration file, raw HID devices must be configured, and raw -HID device and dynamic sensor property permissions must be set up in the SELinux -policy files. +sensor sub-HAL configuration file, support for raw HID devices must be configured +in the Linux kernel (`CONFIG_HIDRAW=y`), and SELinux policy files must be updated +to provide the necessary permissions. Example changes are provided below. ```shell acme-co$ git -C device/acme/rocket-phone diff @@ -123,10 +123,8 @@ Once the file modifications are made, rebuild and flash. The dynamic sensor HAL should be initialized and appear in the sensor service. ```shell -acme-co$ make -j28 && fastboot flashall -. -. -. +acme-co$ build_and_flash_android +... acme-co$ adb logcat -d | grep DynamicSensorHal 12-15 18:18:45.735 791 791 D DynamicSensorHal: DynamicSensorsSubHal::getSensorsList_2_1 invoked. 12-15 18:18:47.474 791 791 D DynamicSensorHal: DynamicSensorsSubHal::initialize invoked. @@ -134,8 +132,6 @@ acme-co$ adb shell dumpsys sensorservice | grep Dynamic 0000000000) Dynamic Sensor Manager | Google | ver: 1 | type: android.sensor.dynamic_sensor_meta(32) | perm: n/a | flags: 0x00000007 Dynamic Sensor Manager (handle=0x00000000, connections=1) Dynamic Sensor Manager 0x00000000 | status: active | pending flush events 0 -acme-co$ adb logcat -c -acme-co$ ``` When a dynamic sensor is paired with the device (e.g., Bluetooth rocket buds), @@ -145,9 +141,9 @@ it will appear in the sensor service. acme-co$ adb logcat -d | grep "DynamicSensorHal\|hidraw\|Rocket" 12-15 18:19:55.268 157 157 I hid-generic 0003: 1234:5678.0001: hidraw0: BLUETOOTH HID v0.00 Device [RocketBuds] on 12-15 18:19:55.235 791 809 E DynamicSensorHal: return 1 sensors -12-15 18:19:56.239 1629 1787 I SensorService: Dynamic sensor handle 0x1 connected, type 65536, name RocketBuds -acme-co$ adb shell dumpsys sensorservice | grep Rocket -0x00000001) RocketBuds | BLUETOOTH 1234:1234 | ver: 1 | type: com.google.hardware.sensor.hid_dynamic.headtracker(65536) | perm: n/a | flags: 0x00000020 +12-15 18:19:56.239 1629 1787 I SensorService: Dynamic sensor handle 0x1 connected, type 37, name RocketBuds +acme-co$ adb shell dumpsys sensorservice | grep head_tracker +0x00000001) RocketBuds | BLUETOOTH 1234:5678 | ver: 1 | type: android.sensor.head_tracker(37) | perm: n/a | flags: 0x00000020 acme-co$ ``` |