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lab8_1.c
85 lines (77 loc) · 2.14 KB
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lab8_1.c
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char keypadPort at PORTD;
// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
char text[17];
void main() {
int citajPrvBroj = 1;
int broj1 = 0;
int broj2 = 0;
int suma;
ANSEL = 0;
ANSELH = 0;
Lcd_Init();
Lcd_Cmd(_LCD_CLEAR);
do {
char kp = 0;
do {
kp = Keypad_Key_Click();
} while (kp == 0);
switch (kp)
{
case 1: kp = '1'; break; // 1
case 2: kp = '2'; break; // 2
case 3: kp = '3'; break; // 3
case 4: kp = '+'; break; // +
case 5: kp = '4'; break; // 4
case 6: kp = '5'; break; // 5
case 7: kp = '6'; break; // 6
case 8: kp = 'C'; break; // C
case 9: kp = '7'; break; // 7
case 10: kp = '8'; break; // 8
case 11: kp = '9'; break; // 9
case 12: kp = '='; break; // =
case 13: kp = 'B'; break; // brisi
case 14: kp = '0'; break; // 0
case 15: kp = 'K'; break; // kraj
case 16: kp = 'P'; break; //prikazi
}
if (kp >= '0' && kp <= '9') {
if (citajPrvBroj) {
broj1 = kp - '0';
} else {
broj2 = kp - '0';
}
} else if (kp == '+') {
citajPrvBroj = 0;
} else if (kp == '=') {
suma = broj1 + broj2;
} else if (kp == 'B') {
if (citajPrvBroj) {
broj1 = 0;
} else {
broj2 = 0;
}
} else if (kp == 'C') {
broj1 = broj2 = suma = 0;
citajPrvBroj = 1;
Lcd_Cmd(_LCD_CLEAR);
} else if (kp == 'P') {
IntToStr(suma, text);
Lcd_Out_CP(text);
} else if (kp == 'K') {
break;
}
Lcd_Chr_CP(kp);
} while (1);
}