添加灯操作

README.md

@@ -269,3 +269,8 @@
         }
     ]
 }
+
+### 灯规则
+默认 红
+识别到菜  黄
+识别到人  绿

app/src/main/java/com/sw/dualscreen/presentation/SecondaryScreenPresentation.kt

@@ -1,7 +1,6 @@
 package com.sw.dualscreen.presentation
 
 import android.Manifest
-import android.R.attr.visibility
 import android.app.Presentation
 import android.content.Context
 import android.content.pm.PackageManager
@@ -36,6 +35,7 @@ import com.sw.dualscreen.model.response.UserNutritionData
 import com.sw.dualscreen.utils.Debouncer
 import com.sw.dualscreen.utils.GlideUtils
 import com.sw.dualscreen.viewmodel.UserViewModel
+import com.sw.plate.utils.LightManager
 import com.sw.plate.utils.ToastUtils
 import com.sw.plate.utils.arcface.ConfigUtil
 import com.sw.plate.utils.arcface.ErrorCodeUtil
@@ -162,6 +162,8 @@ class SecondaryScreenPresentation(
     fun step1() {
         Timber.d("step1")
         currentStep = 1
+        LightManager.closeGreenLight()
+        LightManager.openRedLight()
         //回复上一次的设置
 //        lastWeight = 0.0
         dinnerTypeInfo = null
@@ -186,7 +188,8 @@ class SecondaryScreenPresentation(
     fun step2(foodInfo: FoodInfo) {
         Timber.d("step2")
         currentStep = 2
-
+        LightManager.openRedLight()
+        LightManager.openGreenLight()
         dinnerTypeInfo = null
         userNutritionData = null
         recognitionWeight = 0.0
@@ -233,6 +236,7 @@ class SecondaryScreenPresentation(
      */
     fun step3() {
         Timber.d("step3")
+        LightManager.closeRedLight()
         currentStep = 3
         stepChangeCallback(currentStep)
         if (currentFood == null) {

lib_face/src/main/java/com/sw/plate/utils/GpioUtils.java

@@ -0,0 +1,175 @@
+package com.sw.plate.utils;
+
+import android.os.SystemClock;
+import android.util.Log;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.DataOutputStream;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+
+/**
+ * Created by Administrator on 2018/11/9.
+ */
+public class GpioUtils {
+
+    private static final String TAG = "GpioUtils";
+
+    /*
+    给export申请权限
+     */
+    public static void upgradeRootPermissionForExport() {
+        upgradeRootPermission("/sys/class/gpio/export");
+    }
+
+    /*
+   配置一个gpio路径
+    */
+    public static boolean exportGpio(int gpio) {
+        return writeNode("/sys/class/gpio/export", "" + gpio);
+    }
+
+    /*
+    给获取io口的状态的路径申请权限,该方法需要在exportGpio后调用
+     */
+    public static void upgradeRootPermissionForGpio(int gpio) {
+        upgradeRootPermission("/sys/class/gpio/gpio" + gpio + "/direction");
+        upgradeRootPermission("/sys/class/gpio/gpio" + gpio + "/value");
+    }
+
+
+    /*
+    设置io口为输入或输出
+     */
+    public static boolean setGpioDirection(int gpio, int arg) {
+        String gpioDirection = "";
+        if (arg == 0) gpioDirection = "out";
+        else if (arg == 1) gpioDirection = "in";
+        else return false;
+        return writeNode("/sys/class/gpio/gpio" + gpio + "/direction", gpioDirection);
+    }
+
+    /*
+    获取io口的状态为输出还是输入
+     */
+    public static String getGpioDirection(int gpio) {
+        String gpioDirection = "";
+        gpioDirection = readNode("/sys/class/gpio/gpio" + gpio + "/direction");
+        return gpioDirection;
+    }
+
+    /*
+    给输出io口写值，高电平或低电平
+     */
+    public static boolean writeGpioValue(int gpio, String arg) {
+        return writeNode("/sys/class/gpio/gpio" + gpio + "/value", arg);
+    }
+
+    //获取当前gpio是高还是低
+    public static String getGpioValue(int gpio) {
+        return readNode("/sys/class/gpio/gpio" + gpio + "/value");
+    }
+
+
+    private static boolean upgradeRootPermission(String path) {
+        Process process = null;
+        DataOutputStream os = null;
+        try {
+            String cmd = "chmod 777 " + path;
+            process = Runtime.getRuntime().exec("su"); //切换到root帐号
+            os = new DataOutputStream(process.getOutputStream());
+            os.writeBytes(cmd + "\n");
+            os.writeBytes("exit\n");
+            os.flush();
+            process.waitFor();
+        } catch (Exception e) {
+        } finally {
+            try {
+                if (os != null) {
+                    os.close();
+                }
+                process.destroy();
+            } catch (Exception e) {
+            }
+        }
+        try {
+            return process.waitFor() == 0;
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+
+    private static boolean writeNode(String path, String arg) {
+        Log.d(TAG, "Gpio_test set node path: " + path + " arg: " + arg);
+        if (path == null || arg == null) {
+            Log.e(TAG, "set node error");
+            return false;
+        }
+        FileWriter fileWriter = null;
+        BufferedWriter bufferedWriter = null;
+        try {
+            fileWriter = new FileWriter(path);
+            fileWriter.write(arg);
+        } catch (Exception e) {
+            Log.e(TAG, "Gpio_test write node error!! path" + path + " arg: " + arg);
+            e.printStackTrace();
+            return false;
+        } finally {
+            try {
+                if (fileWriter != null) {
+                    fileWriter.close();
+                }
+                if (bufferedWriter != null) {
+                    bufferedWriter.close();
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        return true;
+    }
+
+    private static long mTime = 0;
+    private static int mFailTimes = 0;
+
+    private static String readNode(String path) {
+        String result = "";
+
+        FileReader fread = null;
+        BufferedReader buffer = null;
+        try {
+            fread = new FileReader(path);
+            buffer = new BufferedReader(fread);
+            String str = null;
+            while ((str = buffer.readLine()) != null) {
+                result = str;
+                break;
+            }
+            mFailTimes = 0;
+        } catch (IOException e) {
+            Log.e(TAG, "IO Exception");
+            e.printStackTrace();
+            if (mTime == 0 || SystemClock.uptimeMillis() - mTime < 1000) {
+                mFailTimes++;
+            }
+            if (mFailTimes >= 3) {
+                Log.d(TAG, "read format node continuous failed three times, exist thread");
+            }
+        } finally {
+            try {
+                if (buffer != null) {
+                    buffer.close();
+                }
+                if (fread != null) {
+                    fread.close();
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        return result;
+    }
+}

lib_face/src/main/java/com/sw/plate/utils/LightManager.java

@@ -0,0 +1,25 @@
+package com.sw.plate.utils;
+
+public class LightManager {
+    private static final String TAG = "LightManager";
+
+    public static void openGreenLight() {
+        L.e(TAG, "openGreenLight");
+        GpioUtils.writeGpioValue(41, "1");
+    }
+
+    public static void closeGreenLight() {
+        L.e(TAG, "closeGreenLight");
+        GpioUtils.writeGpioValue(41, "0");
+    }
+
+    public static void openRedLight() {
+        L.e(TAG, "openRedLight");
+        GpioUtils.writeGpioValue(40, "1");
+    }
+
+    public static void closeRedLight() {
+        L.e(TAG, "closeRedLight");
+        GpioUtils.writeGpioValue(40, "0");
+    }
+}