pic 18

[nupakachi]

các anh ơi giúp em bài này với ạ.
em cảm ơn nhiều
#include"p18f26k20.h"
#include"i2c.h"
#include"xlcd.h"
#include"delays.h"
//#pragma config OSC = HS, FCMEN=OFF, IESO=OFF
#pragma config PBADEN = OFF
//#pragma config WDT = OFF,WDTPS=512
#pragma config LVP = OFF
#pragma config PWRT = OFF , BOREN=OFF
#pragma config MCLRE = ON,CCP2MX = PORTC
#define SLAVE_ADD 0X68
#define control_LCD TRISB
#define WRITE 0
#define READ 1
char time[7];
char c[14];
int i=0;
/************************************************** ************/
//prototype
void clock_write(void);
void clock_read(void);
void LCD_IN_INTER(unsigned int d);
void Display(char b[] );
void DelayFor18TCY(void);
void DelayPORXLCD(void);
void DelayXLCD(void);
void port_init(void);
void main(void)
{
char ch1[]= "chu khanh";
OpenI2C(MASTER, SLEW_OFF);
OpenXLCD(FOUR_BIT & LINES_5X7);
WriteCmdXLCD(BLINK_OFF & CURSOR_OFF);//no blink cursor and no display cursor
port_init();
clock_read();
Delay1KTCYx(10);
while(1)
{
while(!BusyXLCD){};
putsXLCD(ch1);
clock_read();
Display(time);
Delay1KTCYx(10);
};
}
/************************************************** ************/
void DelayFor18TCY(void)
{
Nop();Nop();Nop();Nop();
Nop();Nop();Nop();Nop();
Nop();Nop();Nop();Nop();
}
void DelayPORXLCD(void)
{
Delay10KTCYx(6);
// timedelay =15ms
//cycles = (timedelay * 4MHz)/4
//cycles =60000
return;
}
void DelayXLCD(void)
{
Delay10KTCYx(1);
// timedelay =5ms
//cycles = (timedelay * 4MHz)/4
//cycles =10000
return;
}
void port_init(void)
{
ANSEL = 0x00;
ANSELH = 0x00;
control_LCD=0;
}
void clock_write(void)//write
{
unsigned int sec, min, hour, day, date, mouth, year;
sec = 0x00;
min = 0x00;
hour = 0x15;
day = 0x02;
date = 0x03;
mouth = 0x05;
year = 0x03;
StartI2C();
IdleI2C(); //wait
WriteI2C(0xD0);//WriteI2C(0xD0);//gui 7 bit dia chi cua slave cung voi 1 bit ghi du lieu
AckI2C();
IdleI2C(); //wait
WriteI2C(0x00);//resister first
AckI2C();
WriteI2C(sec);
WriteI2C(min);//xuat noi dung cua thang ghi chua giay0x00
WriteI2C(hour);//xuat noi dung cua thanh ghi phut 0x01
WriteI2C(day);//gio 0x02
WriteI2C(date);//thu 0x03
WriteI2C(mouth);//ngay 0x04
WriteI2C(year);//thang 0x05
StopI2C();
}
/************************************************** **********/
void clock_read(void)//read
{
StartI2C();//gui tin hieu start
IdleI2C(); //wait
WriteI2C(0xD0);//WriteI2C(0xD0);//gui 7 bit dia chi cua slave cung voi 1 bit ghi du lieu
AckI2C();
IdleI2C();//wait
WriteI2C(0x00);//gui dia chi thanh ghi ma master muon su dung cua DS1307; thanh ghi sec
AckI2C();
IdleI2C();//wait
RestartI2C();
WriteI2C(0xD1);//WriteI2C(0xD1);////gui 7 bit dia chi cua slave cung voi 1 bit doc du lieu
for(i=0; i<6;i++)
{
time[i]=ReadI2C();
AckI2C();
}
time[6]=ReadI2C();
NotAckI2C();
StopI2C();
}
void LCD_IN_INTER(unsigned int d)
{
unsigned i,j,k,l;
l=d/1000;//nghin
k=(d%1000)/100;//tram
j=((d%1000)%100)/10;//chuc
i=((d%1000)%100)%10;//donvi
if(l>=1)
{
WriteDataXLCD(0x30+l);
}
if(k>=1)
{
WriteDataXLCD(0x30+k);
}
WriteDataXLCD(0x30+j);
WriteDataXLCD(0x30+i);
}

void Display(char b[])
{
char ch1[] = "THU";
char ch2[] =":";
char ch3[]="/";
int i,j=0;
//unsigned char c[];
// Luu y: ket qua doc tu RTC DS1307 la so BCD
// Vi du: 24giay --> Ket qua doc ve la: 0x24
// Nen phai tach chu so "2" va so "4" rieng ra de hien thi

// tach bcd tu mang b, luu vao mang c -------------------------//
for(i=0;i<7;i++)
{
// mang c chua cac gia tri ascii, 14 bytes
// tach BCD, lay nibble cao
c[j]=b[i]/16+0x30;
// lay nibble thap
c[j+1]=(b[i]-(c[j]-0x30)*16)+0x30;
j+=2;
}
SetDDRamAddr(0);
putsXLCD(ch1);
LCD_IN_INTER(c[7]);
putsXLCD(ch3);
LCD_IN_INTER(c[8]);
LCD_IN_INTER(c[9]);
putsXLCD(ch3);
LCD_IN_INTER(c[10]);
LCD_IN_INTER(c[11]);
putsXLCD(ch3);
LCD_IN_INTER(c[12]);
LCD_IN_INTER(c[13]);
SetDDRamAddr(64);
LCD_IN_INTER(c[4]);
LCD_IN_INTER(c[5]);
putsXLCD(ch2);
LCD_IN_INTER(c[2]);
LCD_IN_INTER(c[3]);
putsXLCD(ch2);
LCD_IN_INTER(c[1]);
LCD_IN_INTER(c[0]);
}