Diff: main.cpp

Revision:

0:593c5e55dd05

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Nov 28 17:04:22 2020 +0000
@@ -0,0 +1,81 @@
+#include "mbed.h"
+#include "Keypad.h"
+#include "TextLCD.h"
+#include <string>
+
+#define PW_SIZE 5
+#define PASSWORD "1234A"
+
+Serial pc(USBTX, USBRX);
+
+//initialize LCD display
+TextLCD lcd(p5, p7, p6, p11, p12, p13, p14, TextLCD::LCD16x2); // rs, rw, e, d0-d3
+
+// Define keypad values
+char Keytable[] = { '1', '2', '3', 'A',   // r0
+                    '4', '5', '6', 'B',   // r1
+                    '7', '8', '9', 'C',   // r2
+                    '*', '0', '#', 'D'    // r3
+                  };
+                 // c0   c1   c2   c3
+
+//Initialize variables
+uint32_t Index;
+std::string  pword;
+const char * parray;
+int psize=0;
+
+uint32_t cbAfterInput(uint32_t index) {
+    Index = index;
+    
+    //print entered value on LCD and save password in string
+    if(Keytable[Index] != '#' && Keytable[Index] != '*'){
+        if(psize < PW_SIZE){
+            pword.push_back(Keytable[Index]);
+            lcd.putc(Keytable[Index]);
+            parray = pword.c_str();
+            psize++;
+        }
+    }
+    
+    if(Keytable[Index] == '*'){
+        pword = "";
+        lcd.cls();
+        wait(0.001);
+        lcd.printf("Pass:");
+        lcd.locate(0,1);
+        psize=0;
+    }
+    if(Keytable[Index] == '#'){
+        lcd.cls();
+        wait(0.001);
+        if(pword == PASSWORD)
+            lcd.printf("Correct");
+        //lcd.printf("pword");
+        //lcd.locate(0,1);
+        //lcd.printf(parray);
+        else
+            lcd.printf("Incorrect");
+    }
+    return 0;
+}
+
+    
+int main() {
+    
+    lcd.cls();
+    wait(0.001);
+    lcd.printf("Pass:");
+    lcd.locate(0,1);
+     
+                // r0   r1   r2   r3   c0   c1   c2   c3
+    Keypad keypad(p28, p27, p26, p25, p21, p22, p23, p24);
+    keypad.attach(&cbAfterInput);
+    keypad.start();  // energize the keypad via c0-c3
+
+    while (1) {
+        __wfi();
+        pc.printf("Interrupted\r\n");
+        pc.printf("Index:%d => Key:%c\r\n", Index, Keytable[Index]);        
+    }
+}
\ No newline at end of file