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Ds1307 based digital clock

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hafizimran18

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Hi,
i am working on a semester project "digital clock"
i have found a lot of circuits from different websites, but no one is working exactly.
Does anyone have a working circuit(with simulation at proteus isis 7.2 or older), code (with compiler name) and schematic diagram.

Please help me earlier,
 

It's quite a simple circuit and should easily work.

Which ones have you tried that don't work? What was the problem? What didn't work?
 

error:
no display on lcd and no data on microcontroller ports

circuit:
https://obrazki.elektroda.pl/3445288100_1353584953.png

code:

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char sec,minu,hour,day,month,year,date;
 
char m1,s1,h1,d1,dt,y1,mo1;
void write()
{
// I2C_Init(100000); // initialize full master mode
Lcd8_Out(1,1,"write");
I2C_Start(); // issue start signal
I2C_Wr(0xd0); // address DS1307
I2C_Wr(0); // start from word at address (REG0)
I2C_Wr(0x80); // write $80 to REG0. (pause counter + 0 sec)
I2C_Wr(0); // write 0 to minutes word to (REG1)
I2C_Wr(0x12); // write 12 to hours word (24-hours mode)(REG2)
I2C_Wr(0x05); // write 5 - Thursday (REG3)
I2C_Wr(0x25); // write 25 to date word (REG4)
I2C_Wr(0x09); // write 9 (September) to month word (REG5)
I2C_Wr(0x08); // write 08 to year word (REG6)
I2C_Stop(); // issue stop signal
 
I2C_Start(); // issue start signal
I2C_Wr(0xD0); // address DS1307
I2C_Wr(0); // start from word at address 0
I2C_Wr(0); // write 0 to REG0 (enable counting + 0 sec)
I2C_Stop();
 
}
void read()
{
 
Lcd8_Out(1,1,"read");
I2C_Start();
I2C_wr(0xD0);
I2C_wr(0);
I2C_Repeated_Start();
I2C_wr(0xD1);
sec=I2C_Rd(1);
minu=I2C_Rd(1);
hour=I2C_Rd(1);
day=I2C_Rd(1);
date=I2C_Rd(1);
month=I2C_Rd(1);
year=I2C_Rd(0);
I2C_Stop();
 
}
void display()
{
LCD_Out(1,1,"display");
s1=Bcd2Dec(sec);
Lcd8_Chr(2,7,(s1/10 +48));
Lcd8_Chr(2,8,(s1%10 +48));
Lcd8_Out(2,6,":");
 
m1=Bcd2Dec(minu);
Lcd8_Chr(2,4,(m1/10 +48));
Lcd8_Chr(2,5,(m1%10 +48));
Lcd8_Out(2,3,":");
 
h1=Bcd2Dec(hour);
Lcd8_Chr(2,1,(h1/10 +48));
Lcd8_Chr(2,2,(h1%10 +48));
 
d1=Bcd2Dec(day);
Lcd8_Chr(1,5,(d1/10 +48));
Lcd8_Chr(1,6,(d1%10 +48));
Lcd8_Out(1,11,"/");
 
dt=Bcd2Dec(date);
Lcd8_Chr(1,9,(dt/10 +48));
Lcd8_Chr(1,10,(dt%10 +48));
 
mo1=Bcd2Dec(month);
Lcd8_Chr(1,12,(mo1/10 +48));
Lcd8_Chr(1,13,(mo1%10 +48));
Lcd8_Out(1,14,"/");
 
y1=Bcd2Dec(year);
Lcd8_Chr(1,15,(y1/10 +48));
Lcd8_Chr(1,16,(y1%10 +48));
}
void main()
{
trisc.f4=0;
trisc.f3=0;
Lcd8_Config(&portc,&portb,0,2,1,7,6,5,4,3,2,1,0);
Lcd8_Out(1,1,"start");
Delay_ms(1000);
I2C_Init(100000);
write();
while(1)
{
 
read();
display();
}
}
 
Last edited by a moderator:

which is microcontroller are you using can you post the circuit
 

Are you just simulating in Proteus? If yes, double click the 2 10K resistors (on scl and sdc lines) to edit its properties and make them digital type.
You are using mikroC Lcd8 library. It is for 8-bit mode of LCD. In your circuit you have used 4-bit mode of LCD. In you code change all occurences of Lcd8 to Lcd.

This code
Code: 
 Lcd8_Config(&portc,&portb,0,2,1,7,6,5,4,3,2,1,0);
is wrong. You are using PORTB for LCD.

The Lcd8_Config() function you have used uses 3 control lines and 8 data lines. you have to use Lcd_Config() function which uses 2 or 3 control lines and 4 data lines.

Check the mikroC library. I think you are using mikroC and not mikroC Pro.

There is no TRISB configuration. TRISB = 0x00; should be used.
 
Last edited:

r u using the pull resistor or not...

which is the compiler you are using.........
 

He is youing mikroC old version not the mikroC Pro version. Lcd8() is mikroC library function.
 

i think both i2c pin clk and data should made input try this
 

first you check with lcd only display program. if it is success thenyou add interface ds1307.
 

i have only 7 days to sumbit my project and i am unable to do it, please somebody give me simulation on proteus 6.9 and code. please
 

do you have mikroC Pro? I don't have mikroC. I have proteus 7.10
 

hafizimran18 said:
i have only 7 days to sumbit my project and i am unable to do it, please somebody give me simulation on proteus 6.9 and code. please
Click to expand...

If you're going to write the code yourself or work on the project, I recommend you use mikroC PRO for PIC instead of the older mikroC (if you use mikroC, that is). You can download it for free from here:

https://www.mikroe.com/mikroc/pic/
 

Tahmid said:
If you're going to write the code yourself or work on the project, I recommend you use mikroC PRO for PIC instead of the older mikroC (if you use mikroC, that is). You can download it for free from here:

https://www.mikroe.com/mikroc/pic/
Click to expand...




i have both mikroc and mikroc pro, but i don't have much time ,, i am also about spoon feeding ,,, please do something for me
 

Can you post your circuit. I will post the mikroC Pro code for DS1307 in 2 hrs. I have a working code using mikroC Pro
 

do u have the MPLAB with HITECH compiler than i have a code for that............

here is the code

Code: 
#include<htc.h>

#define _XTAL_FREQ 4000000	// defines the crystal used


__CONFIG(0X2F0A);


void ready()
{
	TRISB7=1;
	RB7 = 1;
    RE0=0;
    RE1=1;
    while (RB7==1)
    {
 		RE2=0;
        RE2=1;
    }
	TRISB7=0;
}

//To send the COMMANDS for LCD
void command(unsigned char i)
{ 
 ready();
 PORTB=i;
 RE0=0;
 RE1=0;
 RE2=1;
 RE2=0;
}

//To send the DATA for LCD
void da_dis1(unsigned char i)
{

	ready();
	PORTB=i;
	RE0=1;
	RE1=0;
	RE2=1;
	RE2=0;
}


//to send i2c data
void rrr(unsigned char i)
{
unsigned char j;
//command(0xc8); 
j=(i&0x0f)+'0';
i=i&0x7f;
i=(i>>4)+'0';
da_dis1(i);
da_dis1(j);
}

void lcd_init()
{

command(0x38);
command(0x0e);
command(0x01);
command(0x06);
command(0x80); 
}



void I2CInit(void){
        TRISC3 = 1;      // SDA and SCL as input pin 
        TRISC4 = 1;      // these pins can be configured either i/p or o/p 
        //SSPSTAT |= 0x80; // Slew rate disabled 
		SMP=1;
        SSPCON = 0x28;   // SSPEN = 1, I2C Master mode, clock = FOSC/(4 * (SSPADD + 1)) 
        SSPADD = 0x0a;    // 100Khz @ 4Mhz Fosc 
}


void I2C1_Start()
{
        SEN = 1;         // Start condition enabled 
        while(SEN);      // automatically cleared by hardware wait for start condition to finish
}


void I2C1_Stop()
{
        PEN = 1;         // Stop condition enabled 
        while(PEN);      // Wait for stop condition to finish PEN automatically cleared by hardware 
}


void I2CRestart(){
        RSEN = 1;        // Repeated start enabled 
        while(RSEN);     // wait for condition to finish 
}


void I2CAck(){
        ACKDT = 0;       // Acknowledge data bit, 0 = ACK 
        ACKEN = 1;       // Ack data enabled 
        while(ACKEN);    // wait for ack data to send on bus 
}


void I2CNak(){
        ACKDT = 1;       // Acknowledge data bit, 1 = NAK 
        ACKEN = 1;       // Ack data enabled 
        while(ACKEN);    // wait for ack data to send on bus 
}


void I2CWait(){
        while ( ( SSPCON2 & 0x1F ) || ( SSPSTAT & 0x04 ) );		// wait for any pending transfer 
}


void I2CSend(unsigned char dat){
        SSPBUF = dat;    // Move data to SSPBUF 
        while(BF);       // wait till complete data is sent from buffer 
        I2CWait();       // wait for any pending transfer 
}


unsigned char I2CRead(void)
{
        unsigned char temp;
        RCEN = 1;        // Enable data reception 
        while(!BF);      // wait for buffer full 
        temp = SSPBUF;   // Read serial buffer and store in temp register 
        I2CWait();       // wait to check any pending transfer 
        return temp;     // Return the read data from bus 
}
 
void main(){
        /* Buffer where we will read/write our data */
        unsigned char I2CData[] = {0x00, 0x40, 0x18, 0x03, 0x17, 0x10, 0x12, 0x10};
        unsigned char i;


		ADCON1 =0x06 ; 		// Changes PORTA and PORTE to digital
		TRISA = 0x00 ; 		// Configure PORTA as output
		TRISD = 0X00 ;		// Configure PORTD as output
		TRISB = 0x00 ;		// Configure PORTB as output
		TRISC = 0xff ;		// Configure PORTC as input
		TRISE = 0x00 ;		// Configure PORTE as output
		
		OPTION_REG=0X00;	// to enble internal pull up register for port B
		lcd_init();
		
        
        I2CInit();		// Initialize I2C Port 
        
        //write Valves to RTC
		
		I2C1_Start();		// Send Start condition 
		I2CSend(0xD0);		// Send DS1307 slave address with write operation 
		
        
        I2CSend(0x00);		//Send subaddress 0x00, we are writing to this location 

        // Loop to write 8 bytes //
        for(i=0;i<8;i++)
		  	I2CSend(I2CData[i]);	//send I2C data one by one 
        
		I2C1_Stop();		//Send a stop condition - as transfer finishes 
        
        //reading data from DS1307
        
        while(1)
		{
		I2C1_Start();
		
      
        I2CSend(0xD0);		// Send slave address with write 
        
		I2CSend(0x00);		//Initialazing address pointer

        I2CRestart();		//Send a repeated start, For to start reading 

        I2CSend(0xD1);		// send slave address with read bit set 
		
		/* Loop to read 8 bytes from I2C slave */
        for(i=7;i>0;i--) {

                I2CData[i] = I2CRead();				//read a byte 
                if(i-1) I2CAck(); else I2CNak();	//ACK if its not the last byte to read if its the last byte then send a NAK 
        }
        

		I2C1_Stop();		//Send stop
		
		//display time
		command(0x80);
		rrr(I2CData[5]);	//hour
		da_dis1(':');
		//command(0x83);
		rrr(I2CData[6]);	//minutes
		da_dis1(':');
		//command(0x86);		
		rrr(I2CData[7]);	//Seconds
		
		
		command(0xc0);
		rrr(I2CData[3]);	//Date
		da_dis1('-');
		rrr(I2CData[2]);	//Month 
		da_dis1('-');
		rrr(I2CData[1]);	//year
		}      
		
}

hope this helps
 

it is using buttons to set time. The code I have just displays the date and time. There is not code for buttons. can you write code for the buttons?

Here is the code. You have to change the TRISx and ADCONx , and other registers according to your PIC and project. Also you have to change the Lcd module connections code.

Code: 
#ifndef DS1307
        #define DS1307 0xD0
#endif

// LCD module connections
sbit LCD_RS at LATB0_bit;
sbit LCD_EN at LATB1_bit;
sbit LCD_D4 at LATB2_bit;
sbit LCD_D5 at LATB3_bit;
sbit LCD_D6 at LATB6_bit;
sbit LCD_D7 at LATB7_bit;

sbit LCD_RS_Direction at TRISB0_bit;
sbit LCD_EN_Direction at TRISB1_bit;
sbit LCD_D4_Direction at TRISB2_bit;
sbit LCD_D5_Direction at TRISB3_bit;
sbit LCD_D6_Direction at TRISB6_bit;
sbit LCD_D7_Direction at TRISB7_bit;
// End LCD module connections

unsigned char num,flag;
char b;
char x;                              
int cnt;
unsigned int ch_cnt = 0;
char colon[] = ":";
unsigned char year1, month1, day1, hours1, mins2, seconds1;
char i;
unsigned char sec, min1, hr, week_day, day, mn, year;
char *txt, tnum[4];
int error, am_pm = 0;
char time_format[3];
int ihr;
char sihr[17], data2log[38], data2log1[23];
unsigned int m, log_data_cnt = 0;


void Zero_Fill(char *value) {
        if (value[1] == 0) {
                value[1] = value[0];
                value[0] = 48;
                value[2] = 0;
        }
}

void Write_Time() {
        I2C2_Start();          // issue start signal
        I2C2_Wr(DS1307);       // address DS1307
        I2C2_Wr(0);            // start from word at address (REG0)
        I2C2_Wr(0x80);         // write $80 to REG0. (pause counter + 0 sec)
        I2C2_Wr(0);            // write 0 to minutes word to (REG1)
        I2C2_Wr(0x17);         // write 17 to hours word (24-hours mode)(REG2)
        I2C2_Wr(0x02);         // write 2 - Monday (REG3)
        I2C2_Wr(0x04);         // write 4 to date word (REG4)
        I2C2_Wr(0x05);         // write 5 (May) to month word (REG5)
        I2C2_Wr(0x01);         // write 01 to year word (REG6)
        I2C2_Stop();           // issue stop signal

        I2C2_Start();          // issue start signal
        I2C2_Wr(0xD0);         // address DS1307
        I2C2_Wr(0);            // start from word at address 0
        I2C2_Wr(0);            // write 0 to REG0 (enable counting + 0 sec)
        I2C2_Stop();           // issue stop signal
}

void Read_Time(char *sec, char *min, char *hr, char *week_day, char *day, char *mn, char *year) {
        I2C2_Start();
        I2C2_Wr(DS1307);
        I2C2_Wr(0);
        I2C2_Repeated_Start();
        I2C2_Wr(0xD1);
        *sec =I2C2_Rd(1);
        *min =I2C2_Rd(1);
        *hr =I2C2_Rd(1);
        *week_day =I2C2_Rd(1);
        *day =I2C2_Rd(1);
        *mn =I2C2_Rd(1);
        *year =I2C2_Rd(0);
        I2C2_Stop();
}

void Transform_Time(char  *sec, char *min, char *hr, char *week_day, char *day, char *mn, char *year) {
        *sec  =  ((*sec & 0x70) >> 4)*10 + (*sec & 0x0F);
        *min  =  ((*min & 0xF0) >> 4)*10 + (*min & 0x0F);
        *hr   =  ((*hr & 0x30) >> 4)*10 + (*hr & 0x0F);
        *week_day =(*week_day & 0x07);
        *day  =  ((*day & 0xF0) >> 4)*10 + (*day & 0x0F);
        *mn   =  ((*mn & 0x10) >> 4)*10 + (*mn & 0x0F);
        *year =  ((*year & 0xF0)>>4)*10+(*year & 0x0F);
}

void Display_Time(char sec, char min, char hr, char week_day, char day, char mn, char year) {

        Lcd_Out(1,1,"Date:");

        switch(week_day){
                case 1: txt="Sun"; break;
                case 2: txt="Mon"; break;
                case 3: txt="Tue"; break;
                case 4: txt="Wed"; break;
                case 5: txt="Thu"; break;
                case 6: txt="Fri"; break;
                case 7: txt="Sat"; break;
        }
        Lcd_Out(1,7,txt);
        Lcd_Chr(1,11,(day / 10)   + 48);    // Print tens digit of day variable
        Lcd_Chr(1,12, (day % 10)   + 48);    // Print oness digit of day variable
        Lcd_Chr(1,13,'/');
        Lcd_Chr(1,14,(mn / 10) + 48);
        Lcd_Chr(1,15,(mn % 10) + 48);
        Lcd_Chr(1,16,'/');
        Lcd_Out(1,17,"2");
        Lcd_Out(1,18,"0");
        Lcd_Chr(1,19, (year / 10)  + 48);          // Print year vaiable + 8 (start from year 2008)
        Lcd_Chr(1,20, (year % 10)  + 48);

        if(hr >= 12) {
           Lcd_Out(2,7,"PM");
           am_pm = 1;
        }
        else if(hr < 12) {
           Lcd_Out(2,7,"AM");
           am_pm = 0;
        }

        Lcd_Chr(2,11,(hr / 10)  + 48);
        Lcd_Chr(2,12,(hr % 10)  + 48);
        Lcd_Out(2,13,":");
        Lcd_Chr(2,14,(min / 10) + 48);
        Lcd_Chr(2,15,(min % 10) + 48);
        Lcd_Out(2,16,":");
        Lcd_Chr(2,17,(sec / 10) + 48);
        Lcd_Chr(2,18,(sec % 10) + 48);

}

void main() {
     TRISA = 0b00000011;
     PORTA = 0b00000000;
     LATA = 0b00000000;
     TRISB = 0b00100000;
     PORTB = 0b00000000;
     LATB = 0b00000000;
     TRISD = 0b00001111;
     LATD = 0b00000000;
     PORTD = 0b00000000;
     TRISC = 0b00000000;
     PORTC = 0b00000000;
     LATC = 0b00000000;
     TRISE = 0b111;
     LATE = 0x00;
     PORTE = 0x00;
     ANCON0 = 0b00011100;
     ANCON1 = 0b10011100;
     ANCON1.PCFG11 = 1;
     ADCON0 = 0b00000000;
     //ADCON1 = 0b10110101;
     ADCON1 = 0b10110101;
     //CONFIG3H = 0b00001010;

     CM1CON.CON = 0;
     CM2CON.CON = 0;

     
     cnt = 0;
     

     Lcd_Init();
     Lcd_Cmd(_LCD_CLEAR);
     Lcd_Cmd(_LCD_CURSOR_OFF);
     Lcd_Out(1,1,"RTC");
     I2C2_Init(100000);
     Delay_ms(3000);
     Lcd_Cmd(_LCD_CLEAR);
     txt = "Time:";
     Lcd_Out(2,1,txt);
     PORTC.F2 = 1;
     

     while(1) {
         //Write_Time();
         Read_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year);      
         Transform_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); 
         Display_Time(sec, min1, hr, week_day, day, mn, year);
   

         
         
     }
}
 
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