java代码调用 fos.write这里面是byte类型的+    private static final String LEDBLPATH="/sys/class/hdyrodent_charger_led/brightness";
+    private final void SetChargerLedBrightness(String path,int brightness)
+    {
+        try{
+                java.io.FileOutputStream fos = new
+                java.io.FileOutputStream(new  java.io.File(path));
+                fos.