Giúp sửa lỗi RTC bằng Pic16f877a+DS1307+hiển thị LCD

[huunguyen1990]

Code em mới viết xong mô phỏng bằng ISS khi nhấn nút vào menu cài đặt thời gian không dc, các anh chị giúp em với ạ !
code :
#include <16f877a.h> //KHAI BAO THU VIEN PIC16F877A
#device *=16 adc=10 //KHAI BAO CON TRO VA ADC
#FUSES NOWDT, HS, NOPUT, NOPROTECT //THIET LAP CAU HINH CHO PIC
#use delay(clock=20000000) //KHAI BAO TAN SO DAO DONG LA 20MHZ
#include <lcd_lib_4bit.c>
#use i2c(Master,Slow,sda=PIN_C4,scl=PIN_C3) //BAT CHE DO GIAO TIEP I2C
#define status Pin_B0
#define mode Pin_B1
#define increase Pin_B2
#define decrease Pin_B3


int8 sec,min,hour,dow,date,month,year;
int8 sec1,sec2,min1,min2,hour1,hour2,day,date1,date2,mo nth1,month2,year1,year2;
void set_time(void) ;
void set_min(void);
void set_hour(void);
void set_date(void);
void set_day(void);
void set_month(void);
void set_year(void);
void update_time();
void display();
///////////////////////////
void main ()
{
set_tris_b(0xff);
set_tris_d(0x00);
enable_interrupts(INT_EXT);
enable_interrupts(GLOBAL);
Lcd_init();
while(true)
{
if (mode==0) { set_time();}
update_time();
display();

}
}
////////////////////////////////
void update_time()
{
i2c_start(); //phat bit start I2C
i2c_write(0xD0); //gui dia chi cua slave
i2c_write(0x00); //thiet lap lai con tro - set register pointer
i2c_stop(); //phat bit stop I2C
I2C_start(); //phat bit start I2C
I2C_write(0xD1); //gui lenh doc du lieu
sec = i2c_read(1); //doc du lieu tai dia chi 0x00
min = i2c_read(1); //doc du lieu tai dia chi 0x01
hour = i2c_read(1); //doc du lieu tai dia chi 0x02
dow = i2c_read(1);
date = i2c_read(1);
month = i2c_read(1);
year = i2c_read(0);
i2c_stop(); //phat bit stop I2C
delay_us(100);
sec1=sec & 0x0F;
sec2=(sec & 0x70)>>4; //convert to BCD SEC
min1=min & 0x0F;
min2=(min & 0x70)>>4; //convert to BCD MIN
hour1=hour & 0x0F;
hour2=(hour & 0x30)>>4; //convert to BCD HOUR
day=(dow & 0x07);
date1=date & 0x0F;
date2=(date & 0x30)>>4; //convert to BCD DATE
month1=month & 0x0F;
month2=(month & 0x10)>>4;//convert to BCD MONTH
year1=year & 0x0F;
year2=(year & 0xF0)>>4; //convert to BCD YEAR
delay_ms(1);
}
/////////////////////////////
void update_ds1307(void) {
int8 data=0; // luu tru du lieu tam thoi de gui vao ds1307
i2c_start();
i2c_write(0xd0);
i2c_write(0x00); // ghi du lieu bat dau tu vi tri 00
data=sec1+(sec2<<4);
data=data & 0b01111111;
i2c_write(data);
data=min1+(min2<<4);
i2c_write(data);
data=hour1+(hour2<<4);
i2c_write(data);
data=day;
i2c_write(data);
data=date1+(date2<<4);
i2c_write(data);
data=month1+(month2<<4);
i2c_write(data);
data=year1+(year2<<4);
i2c_write(data);
data=0x00;
i2c_write(data);
i2c_stop(); // ket thuc truyen du lieu
}
///////////////////////
void set_time(void) {
set_year();
set_month();
set_date();
set_day();
set_hour();
while (mode==0) {}
update_ds1307();
}
////////////////////////////
void set_year(void) { // Cai dat nam
LCD_init();
while (mode ==0) {} // cho phim nha
do {
if (increase ==0) { // neu phim 2 duoc nhan
while (increase ==0) {} // khong lam gi cho phim nha
year1++;
if ((year2==9)&(year1==10)) {year1=year2=0;}
if (year1==10) {year1=0;year2++;}
}
if (decrease==0) { // neu phim 3 duoc nhan
while (decrease ==0) {} // khong lam gi cho phim nha
year1--;
if ((year2==0)&(year1==255)) {year1=year2=9;}
if (year1==255) {year1=9;year2--;}
}
Lcd_Setposition(0x80);
printf(Lcd_putchar,"Year: %u%u",year2,year1);
}
while (mode ==1);
}
////////////////////////
void set_month(void) { // Cai dat thang
LCD_init();
while (Pin_B1==0) {} // cho phim nha
do {
if (increase==0) { // neu phim 2 duoc nhan
while (increase==0) {} // khong lam gi cho phim nha
month1++;
if ((month2==1) & (month1==3)) { month2=0;month1=1;}
if (month1==10) { month2++;month1=0;}
}
if (decrease==0) { // neu phim 3 duoc nhan
while (decrease==0) {} // cho phim nha
month1--;
if ((month2==0) & (month1==0)) {month2=1;month1=2; }
if (month1==0) {month2--;month1=9;}
}
Lcd_Setposition(0x80);
printf(Lcd_putchar,"Moth: %u%u",month2,month1);
}
while (mode==1);
}
///////////////////////////////////
void set_date(void) { // Cai dat thang
LCD_init();
while (Pin_B1==0) {} // cho phim nha
do {
if (increase==0) { // neu phim 2 duoc nhan
while (increase==0) {} // khong lam gi cho phim nha
date1++;
if ((date2==3) & (date1==2)) { date2=0;date1=1;}
if (date1==10) { date2++;date1=0;}
}
if (decrease==0) { // neu phim 3 duoc nhan
while (decrease==0) {} // cho phim nha
date1--;
if ((date2==0) & (date1==0)) {date2=3;date1=1; }
if (date1==255) {date2--;date1=9;}
}
Lcd_Setposition(0x80);
printf(Lcd_putchar,"Date: %u%u",date2,date1);
}
while (mode==1);
}
///////////////////////////////////
void set_day(void) {
LCD_init();
while (Pin_B1==0) {};
do {
if (increase==0) {
while (increase==0) {}
day++;
if (day==8) { day=1;}
}
if (decrease==0) {
while (decrease==0) {}
day--;
if (day==255) {day=7;}
}
Lcd_Setposition(0x80);
printf(Lcd_putchar,"Day: %u",day);
}
while (mode==1);
}

/////////////////////////////////////
void set_hour(void) { // Cai dat thang
LCD_init();
while (Pin_B1==0) {} // cho phim nha
do {
if (increase==0) { // neu phim 2 duoc nhan
while (increase==0) {} // khong lam gi cho phim nha
hour1++;
if ((hour2==2) & (hour1==4)) { hour2=0;hour1=0;}
if (hour1==10) { hour2++;hour1=0;}
}
if (decrease==0) { // neu phim 3 duoc nhan
while (decrease==0) {} // cho phim nha
hour1--;
if ((hour2==0) & (hour1==255)) {hour2=2;hour1=3; }
if (hour1==255) {hour2--;hour1=9;}
}
}
while (mode==1);
}
////////////////////////////////////////////
void set_min(void) { // Cai dat thang
LCD_init();
while (Pin_B1==0) {} // cho phim nha
do {
if (increase==0) { // neu phim 2 duoc nhan
while (increase==0) {} // khong lam gi cho phim nha
min1++;
if ((min2==5) & (min1==10)) { min2=0;min1=0;}
if (min1==10) { min2++;min1=0;}
}
if (decrease==0) { // neu phim 3 duoc nhan
while (decrease==0) {} // cho phim nha
min1--;
if ((min2==0) & (min1==255)) {min2=5;min1=9; }
if (min1==255) {min2--;min1=9;}
}
Lcd_Setposition(0x80);
printf(Lcd_putchar,"-%u%u",min2,min1);
}
while (mode==1);
}

///////////////////////////////////
void display()
{
Lcd_Setposition(0x80);
printf(Lcd_putchar,"Time: %u%u",hour2,hour1);
Lcd_Setposition(0x88);
printf(Lcd_putchar,"-%u%u",min2,min1);
Lcd_Setposition(0x8b);
printf(Lcd_putchar,"-%u%u",sec2,sec1);
Lcd_Setposition(0xc0);
printf(Lcd_putchar,"Date: %u%u",date2,date1);
Lcd_Setposition(0xc8);
printf(Lcd_putchar,"-%u%u",month2,month1);
Lcd_Setposition(0xcb);
printf(Lcd_putchar,"-%u%u",year2,year1);
}
/////////////////////////
khi compile thì nó báo là (chủ yếu báo ở các câu lệnh IF(...):
Line34(1,1) : Condition always FALSE
Line105(1,1) : Condition always FALSE
.....
Link ảnh mô phỏng ISS:
http://www.mediafire.com/view/?h7ih5ihgs5ulh9q

Em xin cảm ơn !!