Diff: KEY_PAD.cpp

Revision:

0:19f75d1f3ea2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/KEY_PAD.cpp	Wed Jan 10 16:03:17 2018 +0000
@@ -0,0 +1,248 @@
+#include "mbed.h"
+#include "KEY_PAD.h"
+#include "TextLCD.h"
+
+volatile int row=0;
+volatile int col=0;
+volatile int key=0;
+volatile int step=0;
+volatile int code=0;
+volatile int pass_code=0;
+
+KEY_PAD::KEY_PAD(PinName stupac3Pin, PinName stupac2Pin, PinName stupac1Pin, PinName red4Pin, PinName red3Pin, PinName red2Pin, PinName red1Pin) : stupac3(stupac3Pin), stupac2(stupac2Pin), stupac1(stupac1Pin), red4(red4Pin), red3(red3Pin), red2(red2Pin), red1(red1Pin) {
+    init();
+}
+
+void KEY_PAD::init() {
+    
+    stupci.mode(OpenDrain);
+    stupci.mode(PullUp);
+    
+    red1.mode(PullUp);
+    red2.mode(PullUp);
+    red3.mode(PullUp);
+    red4.mode(PullUp);
+    
+    red1.fall(this, &get_row1);
+    red2.fall(this, &get_row2);
+    red3.fall(this, &get_row3);
+    red4.fall(this, &get_row4);
+}
+void KEY_PAD::make_num(){
+    switch(step){
+        case(0):
+            code=code+key*100;
+            step++;
+        break;
+        
+        case(1):
+            code=code+key*10;
+            step++;
+        break;
+        
+        case(2):
+            code=code+key;
+            step++;
+        break;
+        
+        case(3):
+            step++;
+        break;
+        
+        case(4):
+            step=0;
+            code=0;
+        break;
+    }
+}
+
+void KEY_PAD::make_code(){
+    switch(key){
+        case(1):
+            make_num();
+        break;
+        
+        case(2):
+            make_num();
+        break;
+        
+        case(3):
+            make_num();
+        break;
+        
+        case(4):
+            make_num();
+        break;
+        
+        case(5):
+            make_num();
+        break;
+        
+        case(6):
+            make_num();
+        break;
+        
+        case(7):
+            make_num();
+        break;
+        
+        case(8):
+            make_num();
+        break;
+        
+        case(9):
+            make_num();
+        break;
+        
+        case(10):
+            step=0;
+            code=0;
+        break;
+        
+        case(11):
+            pass_code=0;
+            code=0;
+            step=0;
+        break;
+        
+        case(12):
+            step=0;
+            if(code==123 || code==456 || code==789){
+                pass_code=code;
+                code=0;
+            }
+            else{
+                step=0;
+                code=0;
+                lcd.locate(0,3);
+                lcd.printf("Pogresna lozinka");             
+            }
+                //pogresna lozinka
+        break;
+    }
+}
+
+
+/////////////////////////////////////////////////
+
+void KEY_PAD::shift(){
+        stupci = stupci<<1;
+        
+        stupci = stupci & 0b00000111;
+        
+        wait_ms(2);
+}
+
+void KEY_PAD::get_key(){
+  int table[4][3]{{1, 2, 3},
+                  {4, 5, 6},
+                  {7, 8, 9},
+                  {10, 11, 12}};
+    
+    key=table[row-1][col-1];
+    
+    row=0;
+    col=0;
+    
+    make_code();
+}
+
+void KEY_PAD::get_row1(){
+    red1.fall(NULL);
+    red2.fall(NULL);
+    red3.fall(NULL);
+    red4.fall(NULL);
+    
+    row=1;
+    stupci=1;
+    
+    wait_ms(1);
+    
+    for(int i=1; i<=3; i++){
+        if(red1!=0){
+            col=i;
+            break;
+        }
+        shift();
+    }
+    get_key();
+    stupci=0;
+}
+
+void KEY_PAD::get_row2(){
+    red1.fall(NULL);
+    red2.fall(NULL);
+    red3.fall(NULL);
+    red4.fall(NULL);
+    
+    row=2;
+    stupci=1;
+    
+    wait_ms(1);
+    
+    for(int i=1; i<=3; i++){
+        if(red2!=0 && i!=3){
+            col=i;
+            break;
+        }
+        if(i==3){
+            col=3;
+            break;
+        }
+        shift();
+    }
+    get_key();
+    stupci=0;
+}
+
+void KEY_PAD::get_row3(){
+    red1.fall(NULL);
+    red2.fall(NULL);
+    red3.fall(NULL);
+    red4.fall(NULL);
+    
+    row=3;
+    stupci=1;
+    
+    wait_ms(1);
+    
+    for(int i=1; i<=3; i++){
+        if(red3!=0 && i!=3){
+            col=i;
+            break;
+        }
+        if(i==3){
+            col=3;
+            break;
+        }
+        shift();
+    }
+    get_key();
+    stupci=0;
+}
+
+void KEY_PAD::get_row4(){
+    red1.fall(NULL);
+    red2.fall(NULL);
+    red3.fall(NULL);
+    red4.fall(NULL);
+    
+    row=4;
+    stupci=1;
+    
+    wait_ms(1);
+    
+    for(int i=1; i<=3; i++){
+        if(red4!=0 && i!=3){
+            col=i;
+            break;
+        }
+        if(i==3){
+            col=3;
+            break;
+        }
+        shift();
+    }
+    get_key();
+    stupci=0;
+}
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