BÀI 4 : GIAO TIẾP NÚT NHẤN PIC18F452 XC8

- Đây là ảnh mô phỏng protues.

- Đây là code chương trình.

#include <stdio.h>
#include <stdlib.h>
#define _XTAL_FREQ 8000000 // if 4Mhz is XT
#include <xc.h>

// CONFIG1H
#pragma config OSC = HS         // Oscillator Selection bits (HS oscillator)
#pragma config OSCS = OFF       // Oscillator System Clock Switch Enable bit (Oscillator system clock switch option is disabled (main oscillator is source))

// CONFIG2L
#pragma config PWRT = OFF       // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOR = OFF        // Brown-out Reset Enable bit (Brown-out Reset disabled)
#pragma config BORV = 20        // Brown-out Reset Voltage bits (VBOR set to 2.0V)

// CONFIG2H
#pragma config WDT = OFF        // Watchdog Timer Enable bit (WDT disabled (control is placed on the SWDTEN bit))
#pragma config WDTPS = 128      // Watchdog Timer Postscale Select bits (1:128)

// CONFIG3H
#pragma config CCP2MUX = OFF    // CCP2 Mux bit (CCP2 input/output is multiplexed with RB3)

// CONFIG4L
#pragma config STVR = OFF       // Stack Full/Underflow Reset Enable bit (Stack Full/Underflow will not cause RESET)
#pragma config LVP = OFF        // Low Voltage ICSP Enable bit (Low Voltage ICSP disabled)

// CONFIG5L
#pragma config CP0 = OFF        // Code Protection bit (Block 0 (000200-001FFFh) not code protected)
#pragma config CP1 = OFF        // Code Protection bit (Block 1 (002000-003FFFh) not code protected)
#pragma config CP2 = OFF        // Code Protection bit (Block 2 (004000-005FFFh) not code protected)
#pragma config CP3 = OFF        // Code Protection bit (Block 3 (006000-007FFFh) not code protected)

// CONFIG5H
#pragma config CPB = OFF        // Boot Block Code Protection bit (Boot Block (000000-0001FFh) not code protected)
#pragma config CPD = OFF        // Data EEPROM Code Protection bit (Data EEPROM not code protected)

// CONFIG6L
#pragma config WRT0 = OFF       // Write Protection bit (Block 0 (000200-001FFFh) not write protected)
#pragma config WRT1 = OFF       // Write Protection bit (Block 1 (002000-003FFFh) not write protected)
#pragma config WRT2 = OFF       // Write Protection bit (Block 2 (004000-005FFFh) not write protected)
#pragma config WRT3 = OFF       // Write Protection bit (Block 3 (006000-007FFFh) not write protected)

// CONFIG6H
#pragma config WRTC = OFF       // Configuration Register Write Protection bit (Configuration registers (300000-3000FFh) not write protected)
#pragma config WRTB = OFF       // Boot Block Write Protection bit (Boot Block (000000-0001FFh) not write protected)
#pragma config WRTD = OFF       // Data EEPROM Write Protection bit (Data EEPROM not write protected)

// CONFIG7L
#pragma config EBTR0 = OFF      // Table Read Protection bit (Block 0 (000200-001FFFh) not protected from Table Reads executed in other blocks)
#pragma config EBTR1 = OFF      // Table Read Protection bit (Block 1 (002000-003FFFh) not protected from Table Reads executed in other blocks)
#pragma config EBTR2 = OFF      // Table Read Protection bit (Block 2 (004000-005FFFh) not protected from Table Reads executed in other blocks)
#pragma config EBTR3 = OFF      // Table Read Protection bit (Block 3 (006000-007FFFh) not protected from Table Reads executed in other blocks)

// CONFIG7H
#pragma config EBTRB = OFF      // Boot Block Table Read Protection bit (Boot Block (000000-0001FFh) not protected from Table Reads executed in other blocks)

void main(void)
{
    TRISAbits.TRISA0 = 1;
    TRISCbits.TRISC0 = 1;
    TRISDbits.TRISD7 = 0;
    PORTDbits.RD7 = 0;
    // if khong co lenh nay thì con pic cua chung ta se khong hieu RA0 là I/O dau nha
    ADCON1 = 0x07; 
    while(1)
    {
        if(PORTAbits.RA0==0)
        {
        __delay_ms(90);
        while(PORTAbits.RA0==0)
        {
            PORTDbits.RD7=1;
        }
        }
        if(PORTCbits.RC0==1)
        __delay_ms(90);
        while(PORTCbits.RC0==1)
        {
            PORTDbits.RD7=0;
        }
    }

}

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Author : Huỳnh Ngọc Lâm

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