Diff: Keypad.h

Revision:

1:4ec28912c9e7

Child:

2:2cc70773996b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Keypad.h	Thu Mar 26 02:25:46 2015 +0000
@@ -0,0 +1,138 @@
+#include "mbed.h"
+//#include "RequestQueue.h"
+
+//selection pin
+volatile int index = 1;
+Serial pc(USBTX, USBRX);
+
+//Row pins
+InterruptIn inputOne(p8);
+InterruptIn inputTwo(p7);
+InterruptIn inputThree(p6);
+InterruptIn inputFour(p5);
+
+//Coloumn pins
+DigitalOut outputOne(p9);
+DigitalOut outputTwo(p10);
+DigitalOut outputThree(p11);
+DigitalOut outputFour(p12);
+
+//Timer to scan
+Ticker  keypadTicker ;
+float scanInterval = 0.004; //4ms
+
+void changeConfiguration();
+
+void keyOnePressed (){
+    keypadTicker .detach();
+    if (index == 1)
+        pc.printf(":   1 is pressed   :");
+    if (index == 2)
+        pc.printf(":   4 is pressed   :");
+    if (index ==3)
+        pc.printf(":   7 is pressed   :");
+    if (index ==4)
+        pc.printf(":   * is pressed   :");       
+}
+
+void keyOneReleased (){
+   keypadTicker .attach(&changeConfiguration,scanInterval);
+}
+    
+void keyTwoPressed (){
+   keypadTicker .detach();
+   if (index == 1)
+        pc.printf(":   2 is pressed   :");
+    if (index == 2)
+        pc.printf(":   5 is pressed   :");
+    if (index ==3)
+        pc.printf(":   8 is pressed   :");
+    if (index ==4)
+        pc.printf(":   0 is pressed   :");       
+}
+
+void keyTwoReleased (){
+   keypadTicker .attach(&changeConfiguration,scanInterval);
+}
+    
+void keyThreePressed (){
+   keypadTicker .detach();
+   if (index == 1)
+        pc.printf(":   3 is pressed   :");
+    if (index == 2)
+        pc.printf(":   6 is pressed   :");
+    if (index ==3)
+        pc.printf(":   9 is pressed   :");
+    if (index ==4)
+        pc.printf(":   # is pressed   :");       
+}
+
+void keyThreeReleased (){
+    keypadTicker .attach(&changeConfiguration,scanInterval);
+    }
+
+void keyFourPressed (){
+   keypadTicker .detach();
+   if (index == 1)
+        pc.printf(":   A is pressed   :");
+    if (index == 2)
+        pc.printf(":   B is pressed   :");
+    if (index ==3)
+        pc.printf(":   c is pressed   :");
+    if (index ==4)
+        pc.printf(":   D is pressed   :");              
+}
+
+void keyFourReleased (){
+    keypadTicker .attach(&changeConfiguration,scanInterval);
+}
+
+void changeConfiguration(){
+    index =index +1;
+    if(index == 5)
+        index = 1;
+    switch (index )
+    {
+        case 1: 
+            outputOne = 0;
+            outputTwo = 1;
+            outputThree = 1;
+            outputFour = 1;
+            break;
+        case 2:
+            outputOne = 1;
+            outputTwo = 0;
+            outputThree = 1;
+            outputFour = 1;
+            break;
+        case 3:
+            outputOne = 1;
+            outputTwo = 1;
+            outputThree = 0;
+            outputFour = 1;
+            break;
+        case 4:
+            outputOne = 1;
+            outputTwo = 1;
+            outputThree = 1;
+            outputFour = 0;
+            break;
+        default : break;
+    }    
+}
+
+void initializeKeypad(){
+    outputOne = 1;
+    outputTwo = 1;
+    outputThree = 1;
+    outputFour = 1;
+    inputOne.fall(&keyOnePressed);
+    inputOne.rise(&keyOneReleased);
+    inputTwo.fall(&keyTwoPressed);
+    inputTwo.rise(&keyTwoReleased);
+    inputThree.fall(&keyThreePressed);
+    inputThree.rise(&keyThreeReleased);
+    inputFour.fall(&keyFourPressed);
+    inputFour.rise(&keyFourReleased);
+    keypadTicker.attach(&changeConfiguration, scanInterval);
+}
\ No newline at end of file