Diff: keypad.cpp

Revision:

0:74b4b9fc9480

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/keypad.cpp	Fri Jun 04 10:23:46 2010 +0000
@@ -0,0 +1,68 @@
+#include "main.h"
+
+int getKeyNum(){
+
+DigitalIn col1(p18);
+DigitalIn col2(p20);
+DigitalIn col3(p16);
+
+DigitalOut row1(p19);
+DigitalOut row2(p14);
+DigitalOut row3(p15);
+DigitalOut row4(p17);
+
+    row1 = 1;
+    row2 = 0;
+    row3 = 0;
+    row4 = 0;
+    
+    if (col1)
+        return 1;
+    else if (col2)
+        return 2;
+    else if (col3)
+        return 3; 
+        
+    row1 = 0;
+    row2 = 1;
+    row3 = 0;
+    row4 = 0;
+    
+    if (col1)
+        return 4;
+    else if (col2)
+        return 5;
+    else if (col3)
+        return 6;     
+    
+    row1 = 0;
+    row2 = 0;
+    row3 = 1;
+    row4 = 0;
+    
+    if (col1)
+        return 7;
+    else if (col2)
+        return 8;
+    else if (col3)
+        return 9;  
+        
+    row1 = 0;
+    row2 = 0;
+    row3 = 0;
+    row4 = 1;
+    
+    if (col1)
+        return -2;
+    else if (col2)
+        return 0;
+    else if (col3)
+        return -3;  
+                   
+    row1 = 0;
+    row2 = 0;
+    row3 = 0;
+    row4 = 0;
+    
+    return -1;
+}
\ No newline at end of file