Changes between Version 16 and Version 17 of PiBotDev

Timestamp:

Oct 15, 2016, 1:10:17 AM (9 years ago)

Author:

David Albert

Comment:

--

PiBotDev

@@ -28 +28 @@
     * A SFTP client used to transfer files between Windows and the Pi Zero. It uses the same connection information used for PuTTY.
     * Bitvise SSH Client also has a built-in SFTP client.
+
+* Programming with Oracle jdk.dio
+   * Sample program DioLed.java:
+     {{{
+        import java.io.IOException;
+        import java.lang.InterruptedException;
+        import jdk.dio.DeviceManager;
+        import jdk.dio.gpio.GPIOPin;
+
+        public class DioLed {
+
+           public static void main(String[] args) throws IOException, InterruptedException {
+              try (GPIOPin led = DeviceManager.open(23);) { // LED on BCM pin 23
+                 for (int i = 0; i < 10; i++) {
+                      led.setValue(i % 2 == 0);
+                      Thread.sleep(2000);
+                 }
+              }
+           }
+        }
+     }}}
+   * Sample java.policy file:
+     {{{
+        // grant all permissions for the DIO framework
+        grant {
+           permission jdk.dio.DeviceMgmtPermission "*:*", "open";
+           permission jdk.dio.gpio.GPIOPinPermission "*:*", "open,setdirection";
+           permission jdk.dio.gpio.GPIOPortPermission "*:*";
+           permission jdk.dio.i2cbus.I2CPermission "*:*";
+           permission jdk.dio.spibus.SPIPermission "*:*";
+           permission jdk.dio.uart.UARTPermission "*:*";
+        };
+     }}}
+   * Sample dio.properties file (note: pin number is BCM pin number: physical pin 16):
+     {{{
+        23 = deviceType: gpio.GPIOPin, pinNumber:23, name:GPIO_USER_1, mode:-1, direction:3
+     }}}
+   * Compile: {{{ javac -cp . DioLed.java }}}
+   * Run (assumes dio.jar is in same directory): {{{ 
+        sudo java -Djava.security.policy=./java.policy -classpath .:./dio.jar \
+             -Djdk.dio.registry=./dio.properties DioLed
+          }}}