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Merge "Clarify and clean up dynamic_sensor documentation"

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Treehugger Robot 2022-08-25 18:14:47 +00:00 committed by Gerrit Code Review
commit 4d919104dd
1 changed files with 8 additions and 12 deletions
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20
modules/sensors/dynamic_sensor/README.md
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@ -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$
```