问题：

JavaME embbed blink demo

解决：

代码 https://github.com/giant35/jme2

使用ubuntu 64bit + netbeans 8.1 + jmesdk8.3 + raspberry pi 3 b+ + raspbian

简介：

1. 刷好 raspbian 后，ssh pi@raspberrypi 密码 respberry
2. raspberrypi 安装 oracle-jmee-8-3-rr-raspberrypi-linux-bin
3. raspberrypi 运行 jmee/bin/runuser.sh
4. netbeans 创建javame embbed 项目，代码如下:
5.  package jme2; import javax.microedition.midlet.MIDlet; import jdk.dio.DeviceManager; import jdk.dio.gpio.GPIOPin; import jdk.dio.gpio.GPIOPinConfig;   public class Jme2 extends MIDlet { @Override public void startApp() { try { System.out.println("startApp"); //not ok GPIOPin led=DeviceManager.open(3); GPIOPinConfig cfg=new GPIOPinConfig.Builder().setPinNumber(3).setDirection(GPIOPinConfig.DIR_OUTPUT_ONLY).build(); final GPIOPin led=DeviceManager.open(cfg); do{ Thread.sleep(1000); led.setValue(!led.getValue()); System.out.println(" value :"+led.getValue()); }while(true); } catch (Exception ex) { ex.printStackTrace(); } } @Override public void destroyApp(boolean unconditional) { } }

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   package jme2;   import javax.microedition.midlet.MIDlet; import jdk.dio.DeviceManager; import jdk.dio.gpio.GPIOPin; import jdk.dio.gpio.GPIOPinConfig;   public class Jme2 extends MIDlet {          @Override     public void startApp() {         try {             System.out.println("startApp");             //not ok GPIOPin led=DeviceManager.open(3);             GPIOPinConfig cfg=new GPIOPinConfig.Builder().setPinNumber(3).setDirection(GPIOPinConfig.DIR_OUTPUT_ONLY).build();             final GPIOPin led=DeviceManager.open(cfg);             do{                 Thread.sleep(1000);                 led.setValue(!led.getValue());                 System.out.println(" value :"+led.getValue());             }while(true);         } catch (Exception ex) {             ex.printStackTrace();         }     }          @Override     public void destroyApp(boolean unconditional) {     } }

   
    
6. 运行项目到raspberrypi

 

注意：

1. 接线 led 接 gpio 3+ gnd

 

 

 

参考：

http://www.oracle.com/webfolder/technetwork/tutorials/obe/java/RaspberryPi_GPIO/RaspberryPi_GPIO.html

https://www.raspberrypi.org/documentation/usage/gpio-plus-and-raspi2/README.md