Diff: main.cpp

Revision:

0:97427cf843b1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 12 11:10:52 2021 +0000
@@ -0,0 +1,208 @@
+#include "mbed.h"
+
+BusOut LED_Disp(p7,p11,p9,p8,p5,p6,p10,p12);
+
+
+
+DigitalOut col1 (p26);       // pin 4 on keypad
+DigitalOut col2 (p28);       // pin 2
+DigitalOut col3 (p24);       // pin 6 
+
+DigitalIn row1 (p27);        // pin 3
+DigitalIn row2 (p22);        // pin 8
+DigitalIn row3 (p23);        // pin 7
+DigitalIn row4 (p25);        // pin 5
+
+DigitalOut test1(LED1);
+DigitalOut test2(LED2);
+DigitalOut test3 (LED3); 
+int count;
+void DisplayNumber(int);
+
+
+char keypad(void) 
+{
+    col1 = 1;             //colunm 1 high
+    col2 = 0; 
+    col3 = 0; 
+    
+    if (row1==1)
+    {
+        while(row1==1){}
+        
+        col1 = 0;             
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(1);
+        
+                    
+    }
+    else if (row2==1)           
+    {
+        while (row2==1){}
+        
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(4);           
+    } 
+    else  if (row3==1)         
+    {
+        while (row3==1){}
+        
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(7);
+    }
+    else if (row4==1)
+    {
+        while (row4==1){}
+        
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(11);
+    }
+        
+    return(0);
+}
+    
+char keypad2(void)
+{   
+    col1 = 0;            //colunm 2 high
+    col2 = 1;
+    col3 = 0;
+    
+    if (row1==1)
+    {
+        while(row1==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(2);
+    }
+    else if (row2==1)
+    {
+        while (row2==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(5);
+    }
+    else if (row3==1)
+    {
+        while (row3==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(8);
+    }
+    
+    else if (row4==1)
+    {
+        while (row4==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(0);
+    }
+return(0);   
+}
+
+char keypad3(void)
+{
+    col1 = 0;                //colunm 3 high
+    col2 = 0;
+    col3 = 1;
+    
+    if (row1==1)
+    {
+        while (row1==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(3);
+    }
+    else if (row2==1)
+    {
+        while (row2==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(6);
+    }
+    else if (row3==1)
+    {
+        while (row3==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(9);
+    }
+    else if (row4==1)
+    {
+        while (row4==1){}
+        col1 = 0;
+        col2 = 0;
+        col3 = 0;
+        DisplayNumber(10);
+    }
+        
+    return(0);
+}
+
+int main()
+{
+   DisplayNumber(0); 
+    while(1)
+    {
+        keypad();
+        keypad2();
+        keypad3();
+    }
+}
+
+void DisplayNumber(int num)
+{
+     switch(num)
+     {
+        case 0:
+            LED_Disp = ~0x3F;
+            break;
+        case 1:
+            LED_Disp = ~0x06;
+            break;
+        case 2:
+            LED_Disp = ~0x5B;
+            break;
+        case 3:
+            LED_Disp = ~0x4F;
+            break;
+        case 4:
+            LED_Disp = ~0x66;
+            break;
+        case 5:
+            LED_Disp = ~0x6D;
+            break;
+        case 6:
+            LED_Disp = ~0x7D;
+            break; 
+        case 7:
+            LED_Disp = ~0x07;
+            break;
+        case 8:
+            LED_Disp = ~0x7F;
+            break;
+        case 9:
+            LED_Disp = ~0x67;
+            break; 
+        case 10: //#
+            LED_Disp = ~0x5c;
+            break;
+        case 11:   //*
+            LED_Disp = ~0x63;
+            break;
+    }
+}
+    
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