androidthings / drivers-samples

Peripheral driver samples

Peripheral Driver Samples

Samples for Android Things peripheral drivers located in the contrib-drivers repository.

Note: The Android Things Console will be turned down for non-commercial use on January 5, 2022. For more details, see the FAQ page.

Build and install

Open the project in Android Studio, select the "Run Configuration" for the sample you want to run and click the "Run" button.

See each sample subdirectory README.md for more instructions.

License

Copyright 2016 Google Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

drivers-samples's Issues

GPS driver sample buffer overflow

I am trying the sample for the GPS driver with a raspberry pi 3 and the Ultimate GPS V3 breakout board.

The GPS board is connected following this schematics:

When launching the sample app, I get the following error:

12-26 21:11:50.561 1299-1299/com.example.androidthings.driversamples E/AndroidRuntime: FATAL EXCEPTION: main
                                                                                       Process: com.example.androidthings.driversamples, PID: 1299
                                                                                       java.nio.BufferOverflowException
                                                                                           at java.nio.Buffer.nextPutIndex(Buffer.java:508)
                                                                                           at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:142)
                                                                                           at com.google.android.things.contrib.driver.gps.NmeaGpsModule.processBuffer(NmeaGpsModule.java:178)
                                                                                           at com.google.android.things.contrib.driver.gps.NmeaGpsModule.readUartBuffer(NmeaGpsModule.java:160)
                                                                                           at com.google.android.things.contrib.driver.gps.NmeaGpsModule.access$000(NmeaGpsModule.java:35)
                                                                                           at com.google.android.things.contrib.driver.gps.NmeaGpsModule$1.onUartDeviceDataAvailable(NmeaGpsModule.java:139)
                                                                                           at com.google.android.things.pio.UartDevice$UartDeviceCallbackDispatch.dispatchInterruptEvent(UartDevice.java:507)
                                                                                           at com.google.android.things.pio.CallbackDispatch.onFileDescriptorEvents(CallbackDispatch.java:127)
                                                                                           at android.os.MessageQueue.dispatchEvents(MessageQueue.java:282)
                                                                                           at android.os.MessageQueue.nativePollOnce(Native Method)
                                                                                           at android.os.MessageQueue.next(MessageQueue.java:323)
                                                                                           at android.os.Looper.loop(Looper.java:136)
                                                                                           at android.app.ActivityThread.main(ActivityThread.java:6077)
                                                                                           at java.lang.reflect.Method.invoke(Native Method)
                                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

Firebase Streaming from the REST API for GSM/GPRS modules

Is there a way to connect to a firebase database using eventSource / Server-Sent Events protocol with a GSM/GPRS module such as SIM800L?

I'm trying to reduce my data usage, the normal GET request kills my download limits on Firebase.

Issue with Bmx280SensorDriver

Hi,
I have BMP 280 sensor from Ada fruit. While running BMP 280 sample with Resberry Pi 3, it is crashing with following logs:
03-25 13:51:04.250 1271-1271/? E/TemperatureActivity: Error configuring sensor
com.google.android.things.pio.PioException: android.os.ServiceSpecificException: I/O error
at com.google.android.things.pio.I2cDevice.readRegByte(I2cDevice.java:104)
at com.google.android.things.contrib.driver.bmx280.Bmx280.connect(Bmx280.java:171)
at com.google.android.things.contrib.driver.bmx280.Bmx280.(Bmx280.java:149)
at com.google.android.things.contrib.driver.bmx280.Bmx280SensorDriver.(Bmx280SensorDriver.java:54)
at com.example.androidthings.driversamples.TemperatureActivity.onCreate(TemperatureActivity.java:62)
at android.app.Activity.performCreate(Activity.java:6662)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: android.os.ServiceSpecificException: I/O error
at android.os.Parcel.readException(Parcel.java:1697)
at android.os.Parcel.readException(Parcel.java:1636)
at com.google.android.things.pio.IPeripheralManagerClient$Stub$Proxy.I2cReadRegByte(IPeripheralManagerClient.java:1431)
at com.google.android.things.pio.I2cDevice.readRegByte(I2cDevice.java:102)
at com.google.android.things.contrib.driver.bmx280.Bmx280.connect(Bmx280.java:171) 
at com.google.android.things.contrib.driver.bmx280.Bmx280.(Bmx280.java:149) 
at com.google.android.things.contrib.driver.bmx280.Bmx280SensorDriver.(Bmx280SensorDriver.java:54) 
at com.example.androidthings.driversamples.TemperatureActivity.onCreate(TemperatureActivity.java:62) 
at android.app.Activity.performCreate(Activity.java:6662) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6077) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 

Can somebody please helps me here?

GPS Location Speed always null

I am trying to get the speed from the Location object that I get from my LocationListener, the object never has speed.

private LocationListener mLocationListener = new LocationListener() {

        @Override
        public void onLocationChanged(Location location) {
            if(location.hasSpeed()) {
                 Log.d(TAG, "We got speed!!!");
            }
        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        @Override
        public void onProviderEnabled(String provider) {
        }

        @Override
        public void onProviderDisabled(String provider) {
        }
    };

My Log never get hit although the lat long are correct.

I put some breakpoints in NmeaGpsDriver#onGpsSpeedUpdate and in GpsDriver#reportLocation and I see the speed having the correct value there.

I tried to log while having the device moving at 30mph, no speed at all from the LocationListener.

BMP280 Breakout Board giving sensor changed: 181.25519,180.64856,-135.9237, -133 intermittently

Temperature sensor is working but intermittently sensor gives -135.9237, 179.63043, -128.93599, 188.4 values continuously for sometime. After some period of time, it starts giving correct temperature automatically. I do not know the reason. I have to solve this issue. I am new in this. Can anyone help me in this?

BoardDefaults definition for NXP device is incorrect

BoardDefaults in the sample project have the String DEVICE_NXP as "imx6ul"

In the preview image ro.product.device is set to imx6ul_pico, so the device is not 'detected' by the samples using BoardDefaluts.

Does AndroidTings support Chinese encoding?

cap12xx sample doesn't work for Pico i.MX7D

I'm attempting to use the capacitive buttons (A/B/C), but the sample app fails to initialise:

06-08 06:23:26.544 4425-4425/? W/CaptouchActivity: Unable to open driver connection
                                                   com.google.android.things.pio.PioException: android.os.ServiceSpecificException: I/O error
                                                       at com.google.android.things.pio.I2cDeviceImpl.writeRegByte(I2cDeviceImpl.java:121)
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xx.setInputsEnabled(Cap12xx.java:451)
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xx.init(Cap12xx.java:257)
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xx.<init>(Cap12xx.java:203)
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xxInputDriver.<init>(Cap12xxInputDriver.java:99)
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xxInputDriver.<init>(Cap12xxInputDriver.java:57)
                                                       at com.example.androidthings.driversamples.CaptouchActivity.onCreate(CaptouchActivity.java:51)
                                                       at android.app.Activity.performCreate(Activity.java:6662)
                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
                                                       at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
                                                       at android.os.Handler.dispatchMessage(Handler.java:102)
                                                       at android.os.Looper.loop(Looper.java:154)
                                                       at android.app.ActivityThread.main(ActivityThread.java:6077)
                                                       at java.lang.reflect.Method.invoke(Native Method)
                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
                                                    Caused by: android.os.ServiceSpecificException: I/O error
                                                       at android.os.Parcel.readException(Parcel.java:1697)
                                                       at android.os.Parcel.readException(Parcel.java:1636)
                                                       at com.google.android.things.pio.IPeripheralManagerClient$Stub$Proxy.I2cWriteRegByte(IPeripheralManagerClient.java:1508)
                                                       at com.google.android.things.pio.I2cDeviceImpl.writeRegByte(I2cDeviceImpl.java:119)
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xx.setInputsEnabled(Cap12xx.java:451) 
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xx.init(Cap12xx.java:257) 
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xx.<init>(Cap12xx.java:203) 
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xxInputDriver.<init>(Cap12xxInputDriver.java:99) 
                                                       at com.google.android.things.contrib.driver.cap12xx.Cap12xxInputDriver.<init>(Cap12xxInputDriver.java:57) 
                                                       at com.example.androidthings.driversamples.CaptouchActivity.onCreate(CaptouchActivity.java:51) 
                                                       at android.app.Activity.performCreate(Activity.java:6662) 
                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118) 
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599) 
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
                                                       at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
                                                       at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                       at android.os.Looper.loop(Looper.java:154) 
                                                       at android.app.ActivityThread.main(ActivityThread.java:6077) 
                                                       at java.lang.reflect.Method.invoke(Native Method) 
                                                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 

This corresponds to this line in the activity's onCreate:

            mInputDriver = new Cap12xxInputDriver(this,
                    BoardDefaults.getI2CPort(),
                    null,
                    Cap12xx.Configuration.CAP1208,
                    keyCodes);

I assume it's just an invalid I2C port for the board, but I've no idea what it should be.

AndroidThing Pico Pro i.MX7d

I'm using the AIY Assistant kit with the Pico Pro i.MX7d (instead of the Raspberry Pi.

When I compile and run I have this issue:

`01-02 13:20:32.602 2056-2056/com.example.androidthings.assistant W/main: type=1400 audit(0.0:210): avc: denied { create } for name="cgroup.procs" scontext=u:r:zygote:s0 tcontext=u:object_r:cgroup:s0 tclass=file permissive=0

01-02 13:20:32.654 2056-2056/com.example.androidthings.assistant I/zygote: Late-enabling -Xcheck:jni

01-02 13:20:33.366 2056-2056/com.example.androidthings.assistant I/InstantRun: starting instant run server: is main process

01-02 13:20:33.466 2056-2056/com.example.androidthings.assistant I/AssistantActivity: starting assistant demo

01-02 13:20:33.654 2056-2056/com.example.androidthings.assistant D/AssistantActivity: enumerating devices

01-02 13:20:33.662 2056-2056/com.example.androidthings.assistant I/AssistantActivity: initializing DAC trigger

01-02 13:20:33.697 2056-2056/com.example.androidthings.assistant E/AssistantActivity: error configuring peripherals:
com.google.android.things.pio.PioException: android.os.ServiceSpecificException: Unknown I/O name BCM16 (code 19)
at com.google.android.things.pio.GpioImpl.(GpioImpl.java:53)
at com.google.android.things.pio.PeripheralManagerService.openGpio(PeripheralManagerService.java:170)
at com.google.android.things.contrib.driver.voicehat.Max98357A.(Max98357A.java:59)
at com.google.android.things.contrib.driver.voicehat.VoiceHat.openDac(VoiceHat.java:124)
at com.example.androidthings.assistant.AssistantActivity.onCreate(AssistantActivity.java:310)
at android.app.Activity.performCreate(Activity.java:7000)
at android.app.Activity.performCreate(Activity.java:6991)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: android.os.ServiceSpecificException: Unknown I/O name BCM16 (code 19)
at android.os.Parcel.readException(Parcel.java:2018)
at android.os.Parcel.readException(Parcel.java:1950)
at com.google.android.things.pio.IPeripheralManagerClient$Stub$Proxy.GetGpioClient(IPeripheralManagerClient.java:759)
at com.google.android.things.pio.GpioImpl.(GpioImpl.java:50)
at com.google.android.things.pio.PeripheralManagerService.openGpio(PeripheralManagerService.java:170) 
at com.google.android.things.contrib.driver.voicehat.Max98357A.(Max98357A.java:59) 
at com.google.android.things.contrib.driver.voicehat.VoiceHat.openDac(VoiceHat.java:124) 
at com.example.androidthings.assistant.AssistantActivity.onCreate(AssistantActivity.java:310) 
at android.app.Activity.performCreate(Activity.java:7000) 
at android.app.Activity.performCreate(Activity.java:6991) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856) 
at android.app.ActivityThread.-wrap11(Unknown Source:0) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6494) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
01-02 13:20:33.840 2056-2056/com.example.androidthings.assistant D/vndksupport: Loading /vendor/lib/hw/[email protected] from current namespace instead of sphal namespace.
01-02 13:20:33.841 2056-2056/com.example.androidthings.assistant D/vndksupport: Loading /vendor/lib/hw/gralloc.imx7d.so from current namespace instead of sphal namespace.
01-02 13:20:33.853 2056-2056/com.example.androidthings.assistant I/display: IonManager used`

Any idea what can it be?

.

Failed to resolve: com.google.android.things.contrib:driver-apa102:0.3

Error:(38, 13) Failed to resolve: com.google.android.things.contrib:driver-apa102:0.3
Install Repository and sync project
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PWMServo sample not working with Raspberry Pi 3

Hello,

I can't get the pwmservo sample running. The servo I'm using works properly (I tried with an Arduino Uno).

As a side note, I also tried the other pwn sample without success.

APK signature verification failed.

Sample build went fine but when I run on emulator I get error message:
"02/14 20:24:13: Launching 'tm1637' on 5.1 WVGA API 22.
Installation did not succeed.
The application could not be installed: INSTALL_PARSE_FAILED_NO_CERTIFICATES
APK signature verification failed."

I am running on Android Studio 3.5.3 and Android 10.0 SDK

Any help would be appreciated. Thank you.

Servo sample for Android Things does not working with i.MX7D

Hi!
I ran the pwmservo demo on NXP Pico i.MX7D Developer Kit and it did not work.
I then ran the same demo on Raspberry Pi 3 B and it worked as instructed.

The only difference between both is just the wiring for PWM1 on i.MX7D vs PWM0 on the Raspberry Pi.

I also ranused the PIO CLI to figure out whether the PWM is working or not, and when i ran
pio pwm PWM0 enable 1 --duty=12.5 --freq=50 on my Raspberry Pi 3 B, my servo managed to turn as instructed,
but when I ran pio pwm PWM1 enable 1 --duty=12.5 --freq=50, on the i.MX7D, my servo did not turn.

Any clues?

Thanks!

apa102 example - missing loop for LED lighting?

In the apa102 example there is no loop of the animation thread, but in pwmspeaker the example is looped.

apa102:

drivers-samples/apa102/src/main/java/com/example/androidthings/driversamples/MainActivity.java

Line 63 in cfa3c7f

mHandler.post(mAnimateRunnable);

pwmspeaker:

drivers-samples/pwmspeaker/src/main/java/com/example/androidthings/driversamples/SpeakerActivity.java

Line 98 in cfa3c7f

mHandler.postDelayed(this, PLAYBACK_NOTE_DELAY);

I was wondering if this is a mistake for the apa102 example. Should it be looped? (because otherwise it'll just light up the LED's once then stop right?