Hello. Please tell me, when you use the code get the error. What could be
the reason? The file exists:/sys/class/gpio/gpio60/value
public static boolean value(int pin, int val){
OutputStream os = null;
try {
os = new FileOutputStream("/sys/class/gpio/gpio"+pin+"/value");
String s = ""+val;
os.write(s.getBytes(), 0, s.length()); //line 107
os.flush();
return new File("/sys/class/gpio/gpio"+pin+"/value").exists();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
if(os!=null)
try {
os.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return false;
}
Exception:
java.io.IOException: Operation not permitted
at java.io.FileOutputStream.writeBytes(Native Method)
at java.io.FileOutputStream.write(FileOutputStream.java:345)
at serial.GPIO.value(GPIO.java:107)
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