DS1307 with PIC 16f877 can not be simulated in proteus

eng_a_sayed said:

DS1307 with PIC 16f877 can not be simulated in proteus:

I am try to make RTC, and i make a perfect program using microc pro as follow with perfect proteus program but ... when i start simulation the LCD don't display any thing but only 00:00:00 .... and i don't know where is the error , is it from proteus and in real work will work or what???

please help!!!!!

Code:

sbit LCD_RS at PORTB.b0;
sbit LCD_EN at PORTB.b2;
sbit LCD_D4 at PORTB.b4;
sbit LCD_D5 at PORTB.b5;
sbit LCD_D6 at PORTB.b6;
sbit LCD_D7 at PORTB.b7;

sbit LCD_RS_Direction at TRISB.b0;
sbit LCD_EN_Direction at TRISB.b2;
sbit LCD_D4_Direction at TRISB.b4;
sbit LCD_d5_Direction at TRISB.b5;
sbit LCD_d6_Direction at TRISB.b6;
sbit LCD_d7_Direction at TRISB.b7;

unsigned short read_ds1307(unsigned short address );
unsigned short sec;
unsigned short minute;
unsigned short hour;
unsigned short day;
unsigned short date;
unsigned short month;
unsigned short year;
unsigned short info;
char time[9];
char ddate[11];

unsigned char BCD2UpperCh(unsigned char bcd);
unsigned char BCD2LowerCh(unsigned char bcd);


unsigned short read_ds1307(unsigned short address)
{
I2C1_Start();
I2C1_Wr(0xd0); //address 0x68 followed by direction bit
//(0 for write, 1 for read) 0x68 followed by 0 --> 0xD0
I2C1_Wr(address);
I2C1_Repeated_Start();
I2C1_Wr(0xd1); //0x68 followed by 1 --> 0xD1
info=I2C1_Rd(0);
I2C1_Stop();
return(info);
}


void write_ds1307(unsigned short address,unsigned short w_data)
{
I2C1_Start(); // issue I2C start signal
//address 0x68 followed by direction bit (0 for write, 1 for read)
//0x68 followed by 0 --> 0xD0
I2C1_Wr(0xD0); // send byte via I2C (device address + W)
I2C1_Wr(address); // send byte (address of DS1307 location)
I2C1_Wr(w_data); // send data (data to be written)
I2C1_Stop(); // issue I2C stop signal
}


unsigned char BCD2UpperCh(unsigned char bcd)
{
return ((bcd >> 4) + '0');
}

unsigned char BCD2LowerCh(unsigned char bcd)
{
return ((bcd & 0x0F) + '0');
}

void main() {
I2C1_Init(100000); //DS1307 I2C is running at 100KHz
PORTB = 0;
TRISB = 0; // Configure PORTB as output
TRISC = 0xFF;
Lcd_Init();
Lcd_Cmd(_Lcd_CLEAR); // Clear display
Lcd_Cmd(_Lcd_CURSOR_OFF); // Turn cursor off
Lcd_Out(1, 1, "TIME:");
Lcd_Out(2, 1, "DATE:");


//Set Time
write_ds1307(0,0x80); //Reset second to 0 sec. and stop Oscillator
write_ds1307(1,0x10); //write min 27
write_ds1307(2,0x01); //write hour 14
write_ds1307(3,0x02); //write day of week 2:Monday
write_ds1307(4,0x05); // write date 17
write_ds1307(5,0x01); // write month 6 June
write_ds1307(6,0x09); // write year 8 --> 2008
write_ds1307(7,0x10); //SQWE output at 1 Hz
write_ds1307(0,0x00); //Reset second to 0 sec. and start Oscillator

while(1)
{
sec=read_ds1307(0); // read second
minute=read_ds1307(1); // read minute
hour=read_ds1307(2); // read hour
day=read_ds1307(3); // read day
date=read_ds1307(4); // read date
month=read_ds1307(5); // read month
year=read_ds1307(6); // read year

time[0] = BCD2UpperCh(hour);
time[1] = BCD2LowerCh(hour);
time[2] = ':';
time[3] = BCD2UpperCh(minute);
time[4] = BCD2LowerCh(minute);
time[5] = ':';
time[6] = BCD2UpperCh(sec);
time[7] = BCD2LowerCh(sec);
time[8] = '\0';

ddate[0] = BCD2UpperCh(date);
ddate[1] = BCD2LowerCh(date);
ddate[2] ='/';
ddate[3] = BCD2UpperCh(month);
ddate[4] = BCD2LowerCh(month);
ddate[5] ='/';
ddate[6] = '2';
ddate[7] = '0';
ddate[8] = BCD2UpperCh(year);
ddate[9] = BCD2LowerCh(year);
ddate[10] = '\0';

Lcd_Out(1,6,time);
Lcd_Out(2,6,ddate);
Delay_ms(500);
}
}

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