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--- en:toggledualcolorled [2014/07/01 17:21]
ruppi created
+++ en:toggledualcolorled [2014/07/01 17:21] (current)
ruppi
@@ Line 1: / Line 1: @@
+= Overview =
+ There is  one LED that is Dual Color LED Yellow-green and Red.
+ Yellow-green LED on/off and Red LED on/off by Android App.
+----
+  황록색 과 빨간색을 가지고 있는 2색 LED을 사용하여 황록색과 적색 LED을 안드로이드 앱을 통해서 켜고 끈다.
+= What you need =
+ * ADK Board
+ * ADK IO Kit
+  * Mini Breadboard
+  * Cathode Common LED with Dual Color RED and Yellow-green  x 1ea
+  * 330 ohm Resistor x 2ea
+  * jumper wires
+= Knowledge Base =
+== Dual Color LED ==
+ A light-emitting diode (LED) is a semiconductor light source.
+ The following  Mechanical diagram three different lengths of lead will be able to see that.
+ The longest lead is Cathode of common and the next longest is the anode of the red and It is the shortest, yellow-green of the anode.
+* Symbol
+{{:en:2led_symbol.png}}
+* Mechanical diagram
+{{:en:2led_mechanical.png}}
+== Resistor ==
+ Restricts the amount of current that can flow through a circuit.
+* [http://www.audionotekits.com/resistorcodes.html | 5 band resistor color code calculator]
+* Symbol
+{{:en:resistor_symbol.png?60}}
+= Circuit =
+{{:en:Odroid_ADK_LED_1.png}}
+{{:en:2LED.png}}
+= Schematic =
+{{:en:LED2_sch.png}}
+ LED is constant voltage component and could go bad, if ate over current.
+ohm Two registers prevent 10mA over current from positive voltage to LED and connected in series.
+= Video =
+[http://youtu.be/s1gVRr7JeYw]
+[[Play(http://www.youtube.com/embed/s1gVRr7JeYw?hl=ko&fs=1)]]
+= Software =
+* ADK [[br]]
+svn check out[[br]]
+http://dev.odroid.com/svn/accessory/trunk/ODROIDBluetoothLEDDemo [[br]]
+* Bluetooth [[br]]
+svn check out[[br]]
+http://dev.odroid.com/svn/accessory/trunk/ODROIDAccessoryLEDDemo [[br]]
+<code>
+// initialize GPIO port
+// if true, set GPIO output
+initGPIO(LED_1_PORT, true);
+initGPIO(LED_2_PORT, true);
+//LEDContol
+//send command message
+//msg.what -> command character;
+//msg.arg1 -> port number;
+//msg.arg2 -> HIGH, LOW
+Message ledUpdate = Message.obtain(uiHandler, ODROIDBluetoothLEDDemo.SEND_LETTER_GPIO_OUTPUT, mPort, on?1:0);
+* ADK
+    case SEND_LETTER_GPIO_OUTPUT:
+                // check USB connection
+                if(accessoryManager.isConnected() == false) {
+                    return;
+                }
+                commandPacket[0] = SEND_LETTER_GPIO_OUTPUT;
+                commandPacket[1] = 0;
+                commandPacket[2] = (byte) msg.arg1;
+                commandPacket[3] = 0;
+                if (msg.arg2 == HIGH)
+                    commandPacket[4] = HIGH;
+                else
+                    commandPacket[4] = LOW;
+                accessoryManager.write(commandPacket);
+                break;
+* Bluetooth
+    case SEND_LETTER_GPIO_CONFIG:
+                // check Bluetooth connection
+        if (mCmdSendService.getState() != BluetoothMotorControlService.STATE_CONNECTED) {
+            Toast.makeText(getBaseContext(), R.string.not_connected, Toast.LENGTH_SHORT)
+            .show();
+            return;
+        }
+        if (commandPacket[0] != 0) {
+            return;
+        }
+        commandPacket[0] = SEND_LETTER_GPIO_CONFIG;
+        commandPacket[1] = 0;
+        commandPacket[2] = (byte) msg.arg1;
+        commandPacket[3] = 0;
+        commandPacket[4] = (byte) msg.arg2;
+        mCmdSendService.write(commandPacket);
+        break;
+</code>
+send 5 byte buffers by bluetooth or usb