android - 如何启用Raspberry Pi3模块的I2C(将Android Things作为操作系统使用)

Question

我正在尝试使用Raspberry Pi模块3开发一个示例Android-Things应用，该模块从BME280传感器获取温度读数并将其显示在应用上。我已经下载了示例项目，但是在打开带有地址的I2cDevice时遇到问题。

以下是代码详细信息：

私有静态最终int ADDRESS = 0x76;

private void printDeviceId() {
    List<String> deviceList = managerService.getI2cBusList();
    if (deviceList.isEmpty()) {
        Log.i(TAG, "No I2C bus available on this device.");
    } else {
        Log.i(TAG, "List of available devices: " + deviceList);
    }
    I2cDevice device = null;
    try {
        device = managerService.openI2cDevice(deviceList.get(0), ADDRESS);
        Log.d(TAG, "Device ID byte: 0x" + Integer.toHexString(device.readRegByte(0xD0)));
    } catch (IOException|RuntimeException e) {
        Log.e(TAG, e.getMessage(), e);
    } finally {
        try {
            device.close();
        } catch (Exception ex) {
            Log.d(TAG, "Error closing device");
        }
    }
}

实际上，当deviceList只有一个设备（即deviceList.get（0）为“ I2C1”）时，它在openI2cDevice方法上崩溃

这是崩溃日志：
android.os.ServiceSpecificException：I / O错误（代码5）
                                                                        com.google.android.things.pio.PioException：android.os.ServiceSpecificException：I / O错误（代码5）
                                                                            在com.google.android.things.pio.I2cDeviceImpl.readRegByte（I2cDeviceImpl.java:81）
                                                                            在com.example.pitepmerature.MainActivity.printDeviceId（MainActivity.java:92）
                                                                            在com.example.pitepmerature.MainActivity.onCreate（MainActivity.java:34）
                                                                            在android.app.Activity.performCreate（Activity.java:7000）
                                                                            在android.app.Activity.performCreate（Activity.java:6991）
                                                                            在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1214）
                                                                            在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2731）
                                                                            在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2856）
                                                                            在android.app.ActivityThread.-wrap11（未知来源：0）
                                                                            在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1589）
                                                                            在android.os.Handler.dispatchMessage（Handler.java:106）
                                                                            在android.os.Looper.loop（Looper.java:164）
                                                                            在android.app.ActivityThread.main（ActivityThread.java:6494）
                                                                            在java.lang.reflect.Method.invoke（本机方法）
                                                                            在com.android.internal.os.RuntimeInit $ MethodAndArgsCaller.run（RuntimeInit.java:438）
                                                                            在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:807）
                                                                         引起原因：android.os.ServiceSpecificException：I / O错误（代码5）
                                                                            在android.os.Parcel.readException（Parcel.java:2018）
                                                                            在android.os.Parcel.readException（Parcel.java:1950）
                                                                            在com.google.android.things.pio.IPeripheralManagerClient $ Stub $ Proxy.I2cReadRegByte（IPeripheralManagerClient.java:1301）
                                                                            在com.google.android.things.pio.I2cDeviceImpl.readRegByte（I2cDeviceImpl.java:79）
                                                                            在com.example.pitepmerature.MainActivity.printDeviceId（MainActivity.java:92）
                                                                            在com.example.pitepmerature.MainActivity.onCreate（MainActivity.java:34）
                                                                            在android.app.Activity.performCreate（Activity.java:7000）
                                                                            在android.app.Activity.performCreate（Activity.java:6991）
                                                                            在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1214）

我也尝试将地址更改为0x77，但是没有用。还浏览了许多博客，但没有找到解决方法。

我更喜欢编写和设置所有内容的博客链接：

http://zenandroid.io/writing-a-driver-for-android-things-bme280-humidity-sensor/

请帮忙。

Answer 1

感谢大家的有用评论。我终于找到了解决方案，实际上问题出在我正在执行的示例上。另外，我想出了正确的引脚配置。
这是示例项目git链接：

https://github.com/androidthings/drivers-samples/tree/master/bmx280

另外，检查我遵循的引脚图