BASIC4MCU | 8051/PIC | DT-516 강좌 | DT516-024.c 8비트 타이머 인터럽트를 사용한 9999 카운터
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작성자 키트 작성일2017-08-21 17:14 조회1,227회 댓글0건첨부파일
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//-------------------------------------------------------------
// 82G516 E/V BOARD ( DT-516 )
//-------------------------------------------------------------
// XTAL : 22.1184Hz
//-------------------------------------------------------------
// filename: DT516-024.c
// 8비트 타이머 인터럽트를 사용한 9999 카운터
//-------------------------------------------------------------
#include <REG_MPC82G516.H>
//
#define U_C unsigned char
#define U_I unsigned int
#define U_L unsigned long
//
#define I_C idata char
#define I_I idata int
#define I_L idata long
#define I_F idata float
#define IU_C idata unsigned char
#define IU_I idata unsigned int
#define IU_L idata unsigned long
//
#define X_C xdata char
#define X_I xdata int
#define X_L xdata long
#define X_F xdata float
#define XU_C xdata unsigned char
#define XU_I xdata unsigned int
#define XU_L xdata unsigned long
//
#define C_C code char
#define C_I code int
#define C_L code long
#define C_F code float
#define CU_C code unsigned char
#define CU_I code unsigned int
#define CU_L code unsigned long
//
#define FND_COM1 P40
#define FND_COM2 P41
#define FND_COM3 P42
#define FND_COM4 P43
#define FND_SEG P0
//
CU_C Seg_Data[]={
0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E //0123456789AbcdEF
};
//
bit delay_flg=0;
U_C FND_CNT=0;
U_I delay_buf=0, counter=0;
//
// 22118400/12/256=7200Hz=0.13889ms
void Timer_0_Interrupt(void) interrupt 1{ // 7200Hz주기
P4=0xFF; // FND OFF
switch(FND_CNT){
case 0: P0=Seg_Data[counter/1000]; FND_COM1=0; break;
case 1: P0=Seg_Data[(counter/100)%10]; FND_COM2=0; break;
case 2: P0=Seg_Data[(counter/ 10)%10]; FND_COM3=0; break;
case 3: P0=Seg_Data[counter%10]; FND_COM4=0; break;
}
if(++FND_CNT>3)FND_CNT=0;
//
if(delay_buf){ if(--delay_buf==0)delay_flg=1; }
}
//
void delay_ms(U_I d){
delay_buf=(U_I)((float)d*7.2);
if(delay_buf==0)delay_buf=1;
TH0=0; delay_flg=0; while(!delay_flg);
}
//
void main(){
TMOD=2; ET0=1; TR0=1; EA=1;
while(1){
for(counter=0;counter<10000;counter++)delay_ms(1000);
}
}
//-------------------------------------------------------------
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