/* Main.c file generated by New Project wizard
*
* Created: 周二 4月 10 2018
* Processor: PIC18F452
* Compiler: MPLAB C18
*/
#include <p18f452.h>
#define RW PORTBbits.RB5
#define RS PORTBbits.RB6
#define EN PORTBbits.RB7
#define P0 PORTD
void tmr(void);
void KeyInterrupt1 (void); //中斷服務函數
void KeyInterrupt2 (void); //中斷服務函數
void KeyInterrupt3 (void); //中斷服務函數
void lcd_show(void);
int j=0;
int time=0;
int timem=0;
int intermode=0;
int init(); //聲明初始化函數
int write_com(unsigned char);//聲明寫命令函數
int write_date(unsigned char);//聲明寫數據函數
int delay(unsigned char);//聲明延遲函數
unsigned char x;
//sbit RS = P1^0;
// sbit RW = P1^1;
//sbit EN = P1^2;
//unsigned char table[]="HELLO!";
//unsigned char table1[]="2018/4/16";
void main(void)//主函數
{
TRISD=0;
TRISBbits.TRISB0=1;
TRISBbits.TRISB1=1;
TRISBbits.TRISB2=1;
TRISBbits.TRISB5=0;
TRISBbits.TRISB6=0;
TRISBbits.TRISB7=0;
TRISAbits.TRISA0=0;
// INTCON |= 0xa0; //開全局中斷及Timer0 中斷
INTCONbits.TMR0IE=1;
INTCONbits.GIE=1;
//INT0
INTCON2bits.INTEDG0=1;
INTCONbits.INT0IF=0;
INTCONbits.INT0IE=1;
//INT1
INTCON2bits.INTEDG1=1;
INTCON3bits.INT1IF=0;
INTCON3bits.INT1IE=1;
//int2
INTCON2bits.INTEDG2=1;
INTCON3bits.INT2IF=0;
INTCON3bits.INT2IE=1;
TMR0H = 25536/256; //高8 位
TMR0L = 25536%256; //低8 位
T0CON = 0x88; //使能Timer0，并設置為16 位定時器，沒有預分頻
init();
// write_com(0x80);
// for(x=0;x<6;x++)
// {
// write_date(table[x]);
// delay(150);
// }
//for(x=0;x<6;x++)
// {
// write_date(time);
// delay(150);
// }
// write_com(0x80);
// for(x=0;x<17;x++)
// {
// write_date(table1[x]);
// delay(150);
// }
while(1)
{
switch(intermode) {
case 0: {write_com(0x80);
lcd_show();break;
}
case 1:
{write_com(0x80+0x08);
lcd_show();break;}
case 2:
{write_com(0x80+0x40);
lcd_show();break;
}
case 3:
{write_com(0x80+0x40+0x08);
lcd_show();break;
}
default:
{write_com(0x80);
lcd_show();break;
}
}
}
}
#pragma code xx=0x0008 //MCC18 的中斷必需用一段匯編實現
void inter(void) //xx 為優先級，沒有優先級時,可省略xx
{
if(INTCONbits.INT0IF){
_asm
goto KeyInterrupt1
_endasm}
else if(INTCON3bits.INT1IF){
_asm
goto KeyInterrupt2
_endasm
}
else if(INTCON3bits.INT2IF){
_asm
goto KeyInterrupt3
_endasm
}
else
{ _asm
goto tmr
_endasm}
}
#pragma code
#pragma interrupt tmr
void tmr(void)
{
INTCONbits.GIE=0; //關閉全局中斷
j++;
INTCONbits.TMR0IF=0; //標志位清零
if(j==100) //循環定時
{
j=0;
time++;
if(time==60)
{
int a;
time=0;
timem++;
for(a=10;a>0;a--)
{PORTAbits.RA0=0;
delay(50);
PORTAbits.RA0=1;
delay(50);
PORTAbits.RA0=0;
delay(50);
PORTAbits.RA0=1;
delay(50);}
}
}
TMR0H = 25536/256; //高8 位
TMR0L = 25536%256; //低8 位
INTCONbits.GIE=1; //使能全局中斷
}
#pragma code
//=======中斷服務函數==========
#pragma interrupt KeyInterrupt1
void KeyInterrupt1 (void)
{
if (INTCONbits.INT0IF && INTCONbits.INT0IE) //中斷標志位判斷
{
T0CONbits.TMR0ON=~T0CONbits.TMR0ON;
INTCONbits.INT0IF = 0; //中斷標志位清零
}
}
#pragma code
//=======中斷服務函數==========
#pragma interrupt KeyInterrupt2
void KeyInterrupt2 (void)
{
if (INTCON3bits.INT1IF && INTCON3bits.INT1IE) //中斷標志位判斷
{
//T0CONbits.TMR0ON=~T0CONbits.TMR0ON;
//intermode=~intermode;
INTCON3bits.INT1IF = 0; //中斷標志位清零
intermode++;
if(intermode==4)
{intermode=0;}
}
}
#pragma code
#pragma interrupt KeyInterrupt3
void KeyInterrupt3 (void)
{
if (INTCON3bits.INT2IF && INTCON3bits.INT2IE) //中斷標志位判斷
{
time=timem=j=0;
T0CONbits.TMR0ON=0;
INTCON3bits.INT2IF = 0; //中斷標志位清零
}
}
#pragma code
int init()//初始化函數體
{
EN = 0;
write_com(0X38);//設置16*2顯示，5*7點陣，8位數據接口
write_com(0X0C);//設置開顯示，不顯示光標
write_com(0X06);//寫一個字符時，整屏右移
write_com(0X01);//顯示清零
return 0;
}
int write_com(unsigned char com)//寫命令的函數體
{
RS = 0;
RW = 0;
P0 = com;
delay(5);
EN = 1;
delay(5);
EN = 0;
return 0;
}
int write_date(unsigned char date)//寫數據的函數體
{
RS = 1;
RW = 0;
P0 = date;
delay(5);
EN = 1;
delay(5);
EN = 0;
return 0;
}
int delay(unsigned char xms)
{
unsigned char x,y;
for(x=xms;x>0;x--)
for(y=110;y>0;y--);
return 0;
}
void lcd_show(void)
{
unsigned char a,b;
unsigned char time2[7];
unsigned int time1[2];
unsigned int time3[2];
time3[0]=j/10;
time3[1]=j%10;
time1[0]=time/10;
time1[1]=time%10;
time2[0]='0'+timem;
time2[1]='m';
time2[2]='0'+time1[0];
time2[3]='0'+time1[1];
time2[4]='s';
time2[5]='0'+time3[0];
time2[6]='0'+time3[1];
for(x=0;x<7;x++)
{
write_date(time2[x]);
delay(15);
}
}
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