atmega16 ds1302

ID:559809 · 發(fā)表于 2019-6-26 16:02

#include <mega16.h>
#include <delay.h>
#include "DS1302.h"
#include "key.h"
#define uchar unsigned char
#define uint unsigned int
flash char led_7[12]={0xd7,0x14,0xcd,0x5d,0x1e,0x5b,0xdb,0x15,0xdf,0x5f,0x9f};//0-9
flash unsigned char position[4]={0x1f,0x2f,0x4f,0x8f};//選擇第幾個(gè)數(shù)碼管亮
unsigned char dis_buff[4]; // 顯示緩沖區(qū)，存放要顯示的4個(gè)字符的段碼值
unsigned char time[2];
unsigned char posit,i=0,c=0xff;
unsigned int count=0;
bit point_on;
void display(void) // 4位LED數(shù)碼管動(dòng)態(tài)掃描函數(shù)
{
  PORTA = 0xff;
  PORTC = led_7[dis_buff[posit]];
  if (point_on && (posit==2||posit==4)) PORTA |= 0x80;
  PORTA = position[posit];
  PORTA &= c;
  if (++posit >=4 ) posit = 0; // （3）
}
interrupt [TIM0_COMP] void timer0_comp_isr(void)//中斷服務(wù)函數(shù)
{
         display();
            count++;
            if(count>=1000){
            count=0;
                  c=~(1<<i);
                  if(++i>=4)i=0;
                  point_on++;
            }

}
void main(void)
{
PORTA = 0xFF;             /*打開(kāi)上拉*/
DDRA = 0xFF;             /*方向輸入*/
PORTB = 0xF0;             /*電平設(shè)置*/
DDRB = 0xFF;             /*方向輸出*/
PORTC = 0x00; // 顯示控制I/O端口初始化
DDRC = 0xFF;
PORTD = 0xFF;
DDRD = 0xFF;

TCCR0=0x0A; // 內(nèi)部時(shí)鐘，8分頻（1M/8=125KHz），CTC模式
TCNT0=0x00;
OCR0=0x7C; // OCR0 = 0x7C(124),(124+1)/125=1ms
TIMSK=0x02; // 允許T/C0比較匹配中斷
delay_us(500);
#asm("sei") // 開(kāi)放全局中斷
delay_us(500);
ds1302_init();
delay_ms(10);
ds1302_write_time();
ds1302_read_time();
while (1)

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