Something very unusual is happening here.
I wrote a program in Java (using Pi4J) to blink a led (to debug the problem).
testPin = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_01,"TEST",PinState.HIGH); testPin.blink(100);
If I insert microSD card on an old PI Model B, it works.
If I insert microSD card on a brand new PI 3 Model B, it does not.
It is not only the same program. It is the same everything! Both cases I run the same microSD card, with the same environment. Just changing the hardware.
I thought that the PI 3 Model B was ruined. But, just in case, I decided to test it in Python. IT WORKS! I mean, it works on both computers.
This is the Python program:
import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BOARD) GPIO.setwarnings(False) GPIO.setup(12, GPIO.OUT) while(1): print("ON\n") GPIO.output(12, 1) time.sleep(1) print("OFF\n") GPIO.output(12, 0) time.sleep(1)
It is driving me crazy. It does not make any sense.
java version "1.8.0_65" Java(TM) SE Runtime Environment (build 1.8.0_65-b17) Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode)
Obs: I use this Java version to have JavaFX
Linux raspberrypi1 4.4.38-v7+ #938 SMP Thu Dec 15 15:22:21 GMT 2016 armv7l GNU/Linux pi4j version 0.0.5
Any clue? Tks!