- Đây là ảnh mô phỏng protues.
- Đây là code chương trình.
#include <stdio.h>
#include <stdlib.h>
#define _XTAL_FREQ 8000000
#include <xc.h>
// CONFIG1
#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator: High-speed crystal/resonator on RA6/OSC2/CLKOUT and RA7/OSC1/CLKIN)
#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled and can be enabled by SWDTEN bit of the WDTCON register)
#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF // RE3/MCLR pin function select bit (RE3/MCLR pin function is digital input, MCLR internally tied to VDD)
#pragma config CP = OFF // Code Protection bit (Program memory code protection is disabled)
#pragma config CPD = OFF // Data Code Protection bit (Data memory code protection is disabled)
#pragma config BOREN = OFF // Brown Out Reset Selection bits (BOR disabled)
#pragma config IESO = OFF // Internal External Switchover bit (Internal/External Switchover mode is disabled)
#pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enabled bit (Fail-Safe Clock Monitor is disabled)
#pragma config LVP = OFF // Low Voltage Programming Enable bit (RB3 pin has digital I/O, HV on MCLR must be used for programming)
// CONFIG2
#pragma config BOR4V = BOR40V // Brown-out Reset Selection bit (Brown-out Reset set to 4.0V)
#pragma config WRT = OFF // Flash Program Memory Self Write Enable bits (Write protection off)
unsigned char const SEGMENT_MAP[10] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
void main(void)
{
ANSELbits.ANS0 = 0; // OFF ADC
ANSELbits.ANS1 = 0; // OFF ADC
TRISC = 0; //Set PortB to all outputs
PORTC = 0;
TRISAbits.TRISA0 = 1; //Set PortC.0 as input
TRISAbits.TRISA1 = 1;
char digit=0;
while(1)
{
if (!RA0) //Check if switch SW1 is closed
{
__delay_ms(100); //wait for 100ms
if(!RA0) //Check if switch SW1 is still closed
{
PORTC = (SEGMENT_MAP[digit]);
__delay_ms(100); //Delay 1 second
digit++;
if (digit>9)
digit=0;
}
}
else
{
PORTC = (SEGMENT_MAP[digit]);
}
if(!RA1) //Check if switch SW1 is closed
{
__delay_ms(100); //wait for 100ms
if(!RA1) //Check if switch SW1 is still closed
{
PORTC = (SEGMENT_MAP[digit]);
__delay_ms(100); //Delay 1 second
digit--;
if (digit==0)
digit=9;
}
}
else
{
PORTC = (SEGMENT_MAP[digit]);
}
}
}
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