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Post subject: DS1307 MikroC Library Posted: 29 Aug 2008 00:24

Post subject: Posted: 29 Aug 2008 08:48

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DS1307 MikroC Library

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halvarezo

Joined: 28 Aug 2008 05:42Posts: 5

Is there any DS1307 MikroC library working? It could help me developing my new project which is based on a RTC. Thanks.

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dronology

Joined: 29 Dec 2007 23:48Posts: 106Location: istanbul

Sometime ago I red one of the embedded code‐developers (//I dont remember his/her name at the moment, sorry forthat) code. It was written about widely used "PCF8530". By a little inspiration and reading datasheet I've my own DS1370code. Here it is;

Code: Select all

/******************************************************** * Real Time Clock DS1307 Library for 18F4620 * * (for PIC IC.) * * by Deniz ELMASLI * * Version 2.0 * * Creation Date: 28.12.2008 ‐ 10:12 Friday * * Revision Date: 08.06.2008 ‐ 03:42 Saturday * * Ide(s) : Code::Blocks v1.0 (C++ developement) * * MikroC V7.0 * * Target Platform: PIC * * MCU : 18F4620 * * Contact: [email protected] * * Web : www.dronology.com * * * * This code in intended to work with PIC IC. This * * source code contains functions to drive DS1307 real * * time clock . I2C Functions used in ver2.0 * *******************************************************

*/

void start1307s(); void ds1307_init(); void ds1307_set_date_time(char day,char mth,char year,char dow,char hr,char min, int sec); void ds1307_get_time_date(char *day, char *mth, char *year, char *dow, char *hr, char *min, char *sec);

void ds1307_init(){ int seconds=0;

I2C_Start();

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I2C_Wr(0xD0); // WR to RTC I2C_Wr(0x00); // REG 0 I2C_Start(); I2C_Wr(0xD1); // RD from RTC seconds = Bcd2Dec(I2C_Rd(0)); // Read current "seconds" in DS1307 I2C_Stop(); seconds = (seconds & 0x7F);

Delay_ms(50);

I2C_Start(); I2C_Wr(0xD0); // WR to RTC I2C_Wr(0x00); // REG 0 I2C_Wr(Dec2Bcd(seconds)); // Start oscillator with current "seconds value I2C_Start(); I2C_Wr(0xD0); // WR to RTC I2C_Wr(0x07); // Control Register I2C_Wr(0x80); // Disable squarewave output pin I2C_Stop();}//~

void ds1307_set_date_time(char day,char mth,char year,char dow,char hr,char min, int sec){ sec =(sec & 0x7F); hr =(hr & 0x3F);

I2C_Start(); I2C_Wr(0xD0); // I2C write address I2C_Wr(0x00); // Start at REG 0 ‐ Seconds I2C_Wr(Dec2Bcd(sec)); // REG 0 I2C_Wr(Dec2Bcd(min)); // REG 1 I2C_Wr(Dec2Bcd(hr)); // REG 2 I2C_Wr(Dec2Bcd(dow)); // REG 3 I2C_Wr(Dec2Bcd(day)); // REG 4 I2C_Wr(Dec2Bcd(mth)); // REG 5 I2C_Wr(Dec2Bcd(year)); // REG 6 I2C_Wr(0x80); // REG 7 ‐ Disable squarewave output pin I2C_Stop();}//~

void ds1307_get_time_date(char *day, char *mth, char *year, char *dow, char *hr, char *min, char *sec){ I2C_Start(); I2C_Wr(0xD0); I2C_Wr(0x00); // Start at REG 3 ‐ Day of week I2C_Start(); I2C_Wr(0xD1); *sec=Bcd2Dec(I2C_Rd(1) & 0x7F); *min=Bcd2Dec(I2C_Rd(1) & 0x7F); *hr=Bcd2Dec(I2C_Rd(1) & 0x3F); *dow=Bcd2Dec(I2C_Rd(1) & 0x7F); // REG 3 *day=Bcd2Dec(I2C_Rd(1) & 0x3F); // REG 4 *mth=Bcd2Dec(I2C_Rd(1) & 0x1F); // REG 5 *year=Bcd2Dec(I2C_Rd(0)); // REG 6 I2C_Stop();}//~

_________________R. Giskard Reventlov & R. Daneel Olivaw

http://www.circuitechs.com http://www.dronology.com

Last edited by dronology on 07 Oct 2008 14:58, edited 1 time in total.

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http://www.dronology.com/




Post subject: Thanks Posted: 29 Aug 2008 15:42




Post subject: Code for DS1307 Posted: 25 Sep 2008 07:10

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halvarezo


Thanks, it could be a great help to me but it is a working code? I mean, did you porbe it on HW. I hope you can help me.Thanks a lot.

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dronology


If it wasn't working how could I send? I'm not interested in wasting time here by sending rubbish codes to people? Checkmy previous code developements from my profile and previous messages. And RTC code: Ofcourse it is working. Someaddons and modifications can be done. LCD out functions etc. Try to improve this code for your purpose.



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halvarezo


Ok, I'll improve the code for my purpose and I'll Post it. Thanks a lot. I've seen you have done many developements. I amstarting with Mikro C because I used to program with MPLAB C18. Thanks for your time.

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dronology


You are welcome :)



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petrd

Joined: 14 Feb 2008 11:04Posts: 71Location: Russia, Voronezh

I try use any code, but i have problem. I write may code, which based on exemples for EasyPic5. Work this code tested onEasyPic5 and PIC16F887. 1. Code for init DS1307:

Code: Select all

* Description: This project is simple demonstration how to set date and time on DS1307 RTC (real‐time clock). The code use MSSP module at PORTC. The example sets the following: TIME: 09:00:00 DATE: 25/09/2008 Please refer to DS1307 datasheet for more information on format date settings. * Test configuration: MCU: PIC16F887 Dev.Board: EasyPIC5 Oscillator: HS, 8.000MHz Ext. Modules: IC RTC (DS1307) SW: mikroC v8.2.0.0


















* NOTES: ‐ For proper I2C communication, pins on PORTC must be in the pull‐up mode, RC3 ‐ pin 6 DS1307 ‐ SCL, RC4 ‐ pin 5 DS1307 ‐ SDA, and the LEDs on board switched OFF!*/

void main() { I2C_Init(100000); // initialize full master mode 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(0x09); // 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(); // issue stop signal}//~!

2. Code for read DS1307:

Code: Select all

* Description: This project is simple demonstration how to read date and time from DS1307 RTC (real‐time clock). The code MCU use MSSP module at PORTC. Date and time are printed at LCD. * Test configuration: MCU: PIC16F887 Dev.Board: EasyPIC5 Oscillator: HS, 8.000MHz Ext. Modules: IC RTC (DS1307), LCD 2x16 chars SW: mikroC v8.2.0.0 * NOTES: ‐ For proper I2C communication, pins on PORTC must be in the pull‐up mode, RC3 ‐ pin 6 DS1307 ‐ SCL, RC4 ‐ pin 5 DS1307 ‐ SDA, and the LEDs on board switched OFF!*/

unsigned char sec, min1, hr, week_day, day, mn, year;char *txt, tnum[4];

void Zero_Fill(char *value) { // fill text repesentation if (value[1] == 0) { // with leading zero value[1] = value[0]; value[0] = 48; value[2] = 0; }}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Reads time and date information from RTC (DS1307)void Read_Time(char *sec, char *min, char *hr, char *week_day, char *day, char *mn, char *year) { I2C_Start(); I2C_Wr(0xD0); I2C_Wr(0); I2C_Repeated_Start(); I2C_Wr(0xD1); *sec =I2C_Rd(1); *min =I2C_Rd(1);



*hr =I2C_Rd(1); *week_day =I2C_Rd(1); *day =I2C_Rd(1); *mn =I2C_Rd(1); *year =I2C_Rd(0); I2C_Stop();}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Formats date and timevoid 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);}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Output values to LCDvoid Display_Time(char sec, char min, char hr, char week_day, char day, char mn, char year) { 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(1,1,txt);

ByteToStr(day,tnum); txt = rtrim(tnum); Zero_Fill(txt); LCD_Out(1,6,txt); ByteToStr(mn,tnum); txt = rtrim(tnum); Zero_Fill(txt); LCD_Out(1,9,txt); ByteToStr(year,tnum); txt = rtrim(tnum); Zero_Fill(txt); LCD_Out(1,14,txt); ByteToStr(hr,tnum); txt = rtrim(tnum); Zero_Fill(txt); LCD_Out(2,6,txt); ByteToStr(min,tnum); txt = rtrim(tnum); Zero_Fill(txt); LCD_Out(2,9,txt); ByteToStr(sec,tnum); txt = rtrim(tnum); Zero_Fill(txt); LCD_Out(2,12,txt);}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Performs project‐wide initvoid Init_Main() { ANSEL=0; ANSELH=0; Lcd_Config(&PORTB, 4, 5, 6, 3, 2, 1, 0); // Lcd_Init_EP5, see Autocomplete I2C_Init(100000); // initialize I2C



Post subject: Re: Code for DS1307 Posted: 26 Sep 2008 12:52

LCD_Chr(1,8,'.'); LCD_Chr(1,11,'.'); txt = "Time:"; LCD_Out(2,1,txt); LCD_Chr(2,8,':'); LCD_Chr(2,11,':'); txt = "20"; LCD_Out(1,12,txt); LCD_Cmd(LCD_CURSOR_OFF);}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Main procedurevoid main() { Init_Main(); // perform initialization while (1) { Read_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); // read time from RTC(DS1307) Transform_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); // format date and time Display_Time(sec, min1, hr, week_day, day, mn, year); // prepare and display on LCD Delay_ms(1000); // wait 1s }}//

Best regards!

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masterblastersachin

Joined: 07 May 2008 10:01Posts: 34Location: BANGALORE

petrd wrote:

I try use any code, but i have problem. I write may code, which based on exemples for EasyPic5. Work this code testedon EasyPic5 and PIC16F887. 1. Code for init DS1307:

Code: Select all

* Description: This project is simple demonstration how to set date and time on DS1307 RTC (real‐time clock). The code use MSSP module at PORTC. The example sets the following: TIME: 09:00:00 DATE: 25/09/2008 Please refer to DS1307 datasheet for more information on format date settings. * Test configuration: MCU: PIC16F887 Dev.Board: EasyPIC5 Oscillator: HS, 8.000MHz Ext. Modules: IC RTC (DS1307) SW: mikroC v8.2.0.0 * NOTES: ‐ For proper I2C communication, pins on PORTC must be in the pull‐up mode, RC3 ‐ pin 6 DS1307 ‐ SCL, RC4 ‐ pin 5 DS1307 ‐ SDA, and the LEDs on board switched OFF!*/

void main() { I2C_Init(100000); // initialize full master mode 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(0x09); // 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



Code: Select all




//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Reads time and date information from RTC (DS1307)void Read_Time(char *sec, char *min, char *hr, char *week_day, char *day, char *mn, char *year) { I2C_Start(); I2C_Wr(0xD0); I2C_Wr(0); I2C_Repeated_Start(); I2C_Wr(0xD1); *sec =I2C_Rd(1); *min =I2C_Rd(1); *hr =I2C_Rd(1); *week_day =I2C_Rd(1); *day =I2C_Rd(1); *mn =I2C_Rd(1); *year =I2C_Rd(0); I2C_Stop();}//~






//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Performs project‐wide initvoid Init_Main() { ANSEL=0; ANSELH=0; Lcd_Config(&PORTB, 4, 5, 6, 3, 2, 1, 0); // Lcd_Init_EP5, see Autocomplete I2C_Init(100000); // initialize I2C LCD_Chr(1,8,'.'); LCD_Chr(1,11,'.'); txt = "Time:"; LCD_Out(2,1,txt); LCD_Chr(2,8,':'); LCD_Chr(2,11,':'); txt = "20"; LCD_Out(1,12,txt); LCD_Cmd(LCD_CURSOR_OFF);}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Main procedurevoid main() { Init_Main(); // perform initialization while (1) { Read_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); // read time from RTC(DS1307) Transform_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); // format date and time Display_Time(sec, min1, hr, week_day, day, mn, year); // prepare and display on LCD



Post subject: Posted: 28 Sep 2008 19:13

Post subject: Re: Code for DS1307 Posted: 01 Oct 2008 09:07

Delay_ms(1000); // wait 1s }}//

Best regards!

hello sir , i burrn this program to 16F877A, when i m reading the ds1307 ,at first second it displays the correct value but after one second it displays random values onlcd.... is it a DS1307 chips problem or something else is there....

_________________SACHIN http://belgaum.myminicity.com/

Last edited by masterblastersachin on 07 Oct 2008 12:03, edited 1 time in total.

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petrd

Joined: 14 Feb 2008 11:04Posts: 71Location: Russia, Voronezh

Quote:

hello sir , i burrn this program to 16F877A, when i m reading the ds1307 ,at first second it displays the correct value but after one second it displays randomvalues on lcd.... is it a DS1307 chips problem or something else is there....

Hi! Now i'm testing code with MCU PIC16F877A ‐ code work. For PIC16F877A i'm write:

Code: Select all

void Init_Main() { //ANSEL=0; //ANSELH=0; ADCON1=7;

In config word i set: DEBUG_off, LVP_off, WDT_off, HS_OSC. In may circuit pull‐up resistors (10 k) set on external board, near DS1307 and pull‐up resistors RC3 and RC4 on EasyPic5 ‐off. I used LCD WH1602B‐YYH‐CTK.

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masterblastersachin


petrd wrote:

I try use any code, but i have problem. I write may code, which based on exemples for EasyPic5. Work this code testedon EasyPic5 and PIC16F887. 1. Code for init DS1307:

Code: Select all

* Description: This project is simple demonstration how to set date and time on DS1307 RTC (real‐time clock). The code use MSSP module at PORTC. The example sets the following: TIME: 09:00:00 DATE: 25/09/2008 Please refer to DS1307 datasheet for more information on format date settings. * Test configuration:





http://belgaum.myminicity.com/




MCU: PIC16F887 Dev.Board: EasyPIC5 Oscillator: HS, 8.000MHz Ext. Modules: IC RTC (DS1307) SW: mikroC v8.2.0.0 * NOTES: ‐ For proper I2C communication, pins on PORTC must be in the pull‐up mode, RC3 ‐ pin 6 DS1307 ‐ SCL, RC4 ‐ pin 5 DS1307 ‐ SDA, and the LEDs on board switched OFF!*/

void main() { I2C_Init(100000); // initialize full master mode 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(0x09); // 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



Code: Select all




//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Reads time and date information from RTC (DS1307)void Read_Time(char *sec, char *min, char *hr, char *week_day, char *day, char *mn, char *year) { I2C_Start(); I2C_Wr(0xD0);



I2C_Wr(0); I2C_Repeated_Start(); I2C_Wr(0xD1); *sec =I2C_Rd(1); *min =I2C_Rd(1); *hr =I2C_Rd(1); *week_day =I2C_Rd(1); *day =I2C_Rd(1); *mn =I2C_Rd(1); *year =I2C_Rd(0); I2C_Stop();}//~




//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Performs project‐wide init



Post subject: adjust the time of RTC using 4 keys Posted: 03 Oct 2008 08:16

Post subject: Posted: 06 Oct 2008 14:32

void Init_Main() { ANSEL=0; ANSELH=0; Lcd_Config(&PORTB, 4, 5, 6, 3, 2, 1, 0); // Lcd_Init_EP5, see Autocomplete I2C_Init(100000); // initialize I2C LCD_Chr(1,8,'.'); LCD_Chr(1,11,'.'); txt = "Time:"; LCD_Out(2,1,txt); LCD_Chr(2,8,':'); LCD_Chr(2,11,':'); txt = "20"; LCD_Out(1,12,txt); LCD_Cmd(LCD_CURSOR_OFF);}//~

//‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Main procedurevoid main() { Init_Main(); // perform initialization while (1) { Read_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); // read time from RTC(DS1307) Transform_Time(&sec,&min1,&hr,&week_day,&day,&mn,&year); // format date and time Display_Time(sec, min1, hr, week_day, day, mn, year); // prepare and display on LCD Delay_ms(1000); // wait 1s }}//

Best regards!

thanks dear this code works ,the problem occurs becuase of i didn't pull up the i2c pins high.............. thanks every body.............


Last edited by masterblastersachin on 07 Oct 2008 12:02, edited 1 time in total.

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masterblastersachin


hello , i want to introduce the 4 keys in the previously posted program to adjust the timimg.... 1key as‐‐> set 2nd key‐‐>up 3rd key‐‐>down 4th key ‐‐> ok.... if i want to set the time press the set key, for posioning the cursor to hour or min or sec press the set key .... for adjusting the time use up or down key... after setting the time press OK key for displaying new time.... please help me..... how can i do it.... thanking you....


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Mohan

Hi,










Joined: 23 Jan 2008 12:27Posts: 12Location: Pondicherry

Try this out. I used the code at http://www.mikroe.com/forum/viewtopic.php?t=15813

and adapted for EP5, PIC16F877A, 8Mhz crystal & DS1307 LCD at PORTB with EP5 default config, PORTD pull down, Switch Jumper J17 set to VCC

Code: Select all

// Definitions for I2C devices BIOS#define DS1307_HWAddress 0xD0 // Hardware address of the RTC

// Keypad Port and lines#define KEYPAD_PORT PORTD // Select keypad port#define KEYPAD_MENU F0 // Menu/Exit#define KEYPAD_SELECT F1 // Select#define KEYPAD_INC F2 // Inc number#define KEYPAD_DEC F3 // Dec number#define KEYPAD_RESET F7 // Reset

#ifndef HIGH#define HIGH 1#define LOW 0#endif // HIGH + LOW

unsigned char bSec, bMin, bStd, bDay, bMon, bYear, oldstate;unsigned int uSec, uMin, uStd, uDay, uMon, uYear;unsigned char output[21];

extern void menu( void);extern void StoreToRTC( void);extern void InitDisplay( void);extern void Set_Position( unsigned char Sign);extern void IncDecSign( unsigned Sign, unsigned direct);extern unsigned char DS1307_Read(unsigned char Addr);extern void DS1307_Write(unsigned char Addr, unsigned char Data);

// Reads a byte from the DS1307 (software controlled)// Input: address to write to// Output: the byte value in the memory position// Desc: the function reads a single byte (Data) at a time to the data address indicated in Addr.unsigned char DS1307_Read(unsigned char Addr){ unsigned char AddrBuff; AddrBuff=DS1307_HWAddress; I2C_Start(); // Issue I2C start signal I2C_Wr(AddrBuff); // Send hardware address for writting I2C_Wr(Addr); // Send the data address I2C_Repeated_Start(); AddrBuff.F0=HIGH; // Configure the data direction bit for reading I2C_Wr(AddrBuff); // Send device address AddrBuff=I2C_Rd(0); // Read the byte from the slave and NACK to end comms I2C_Stop(); // Free up the bus return(AddrBuff);}

// Writes a byte to the DS1307 (software controlled)// Input: address to write to, value to be written// Output: none// Desc: the function writes a single byte (Data) at a time to the data address indicated in DataAddr.void DS1307_Write(unsigned char Addr, unsigned char Data){ I2C_Start(); // Issue I2C start signal I2C_Wr(DS1307_HWAddress); // Send hardware address for writting I2C_Wr(Addr); // Send low byte of the data address I2C_Wr(Data); // Send the data I2C_Stop(); // Free the bus return;}

http://www.mikroe.com/forum/viewtopic.php?t=15813



void InitDisplay( void){ Lcd_Config(&PORTB, 4, 5, 6, 3, 2, 1, 0); // Lcd_Init_EP5, see Autocomplete Lcd_Cmd(LCD_CLEAR); Lcd_Cmd(LCD_CURSOR_OFF); // Turn off cursor Lcd_Out( 1, 1, "Time: 00:00:00"); Lcd_Out( 2, 1, "Date: 00.00.0000"); Delay_ms( 2000);}

void Reset_Clock( void){ bStd = 0; bMin = 0; bSec = 0; bDay = 18; bMon = 7; bYear = 8; StoreToRTC(); InitDisplay();}

void Set_Position( unsigned char Sign){ switch( Sign) { case 0: uStd = (unsigned int)bStd; sprinti(&output, "%02u", uStd); Lcd_Out( 1, 7, output); Lcd_Out( 1, 8, ""); Lcd_Cmd(LCD_BLINK_CURSOR_ON); break; case 1: uMin = (unsigned int)bMin; sprinti(&output, "%02u", uMin); Lcd_Out( 1, 10, output); Lcd_Out( 1, 11, ""); Lcd_Cmd(LCD_BLINK_CURSOR_ON); break; case 2: uSec = (unsigned int)bSec; sprinti(&output, "%02u", uSec); Lcd_Out( 1, 13, output); Lcd_Out( 1, 14, ""); Lcd_Cmd(LCD_BLINK_CURSOR_ON); break; case 3: uDay = (unsigned int)bDay; sprinti(&output, "%02u", uDay); Lcd_Out( 2, 7, output); Lcd_Out( 2, 8, ""); Lcd_Cmd(LCD_BLINK_CURSOR_ON); break; case 4: uMon = (unsigned int)bMon; sprinti(&output, "%02u", uMon); Lcd_Out( 2, 10, output); Lcd_Out( 2, 11, ""); Lcd_Cmd(LCD_BLINK_CURSOR_ON); break; case 5: uYear = (unsigned int)bYear + 2000; sprinti(&output, "%04u", uYear); Lcd_Out( 2, 13, output); Lcd_Out( 2, 16, ""); Lcd_Cmd(LCD_BLINK_CURSOR_ON); break; };}

void IncDecSign( unsigned Sign, unsigned direct){ switch( Sign) {



case 0: if( !direct) { bStd++; if( bStd > 23) bStd = 23; } else { if( bStd > 0) bStd‐‐; }; uStd = (unsigned int)bStd; break; case 1: if( !direct) { bMin++; if( bMin > 59) bMin = 59; } else { if( bMin > 0) bMin‐‐; }; uMin = (unsigned int)bMin; break; case 2: if( !direct) { bSec++; if( bSec > 59) bSec = 59; } else { if( bSec > 0) bSec‐‐; }; uSec = (unsigned int)bSec; break; case 3: if( !direct) { bDay++; if( bDay > 31) bDay = 31; } else { if( bDay > 0) bDay‐‐; }; uDay = (unsigned int)bDay; break; case 4: if( !direct) { bMon++; if( bMon > 12) bMon = 12; } else { if( bMon > 0) bMon‐‐; }; uMon = (unsigned int)bMon; break; case 5: if( !direct) { bYear++; if( bYear > 99) bYear = 99; } else { if( bYear > 0) bYear‐‐; }; uYear = (unsigned int)bYear + 2000; break; };}



// Store all Settings into DS1307/////////////////////////////////void StoreToRTC( void){ Lcd_Cmd(Lcd_CLEAR); Lcd_Cmd(Lcd_CURSOR_OFF); Lcd_Out( 1, 1, " Store to RTC"); bSec = (((bSec / 10) << 4) & 0xF0) + ((bSec‐(bSec / 10) * 10) & 0b00001111); DS1307_Write( 0x00, bSec); bMin = (((bMin / 10) << 4) & 0xF0) + ((bMin‐(bMin / 10) * 10) & 0b00001111); DS1307_Write( 0x01, bMin); bStd = (((bStd / 10) << 4) & 0xF0) + ((bStd‐(bStd / 10) * 10) & 0b00001111); DS1307_Write( 0x02, bStd); // bDay = ((bDay & 0x30) >> 4)*10 + (bDay & 0b00001111); bDay = (((bDay / 10) << 4) & 0x30) + ((bDay‐(bDay / 10) * 10) & 0b00001111); DS1307_Write( 0x04, bDay); bMon = (((bMon / 10) << 4) & 0x10) + ((bMon‐(bMon / 10) * 10) & 0b00001111); DS1307_Write( 0x05, bMon); bYear = (((bYear / 10) << 4) & 0xC0) + ((bYear‐(bYear / 10) * 10) & 0b00001111); DS1307_Write( 0x06, bYear); delay_ms( 2000);}

// KeyPort, input via button//////////////////////////////// F0 = Menu/Exit// F1 = Select// F2 = INC Number// F3 = DEC Number// F7 = Reset Clock‐Chipvoid menu( void){ unsigned char Sig;

Sig = 0;

Lcd_Out( 1, 1, " Set"); Lcd_Out( 2, 1, " "); Lcd_Cmd(LCD_BLINK_CURSOR_ON);

Set_Position( Sig); Delay_ms( 2000);

do { // Menu key pressed? //////////////////// if (KEYPAD_PORT.KEYPAD_MENU == 1) { delay_ms( 250); break; };

if( KEYPAD_PORT.KEYPAD_SELECT == 1) { delay_ms( 250); Sig++; if( Sig > 5) Sig = 0; Set_Position( Sig); };

// Increment if( KEYPAD_PORT.KEYPAD_INC == 1) { delay_ms( 100); IncDecSign( Sig, 0); Set_Position( Sig); };

// Decrement if( KEYPAD_PORT.KEYPAD_DEC == 1) {



delay_ms( 100); IncDecSign( Sig, 1); Set_Position( Sig); };

Delay_ms( 100); } while( 1);

// Store all Settings in DS1307 /////////////////////////////// StoreToRTC();

// Exit to Clock

Lcd_Cmd(Lcd_CURSOR_OFF);

// Refresh Display InitDisplay();}

void main( void){ TRISD = 0b10001111; PORTB = 0x00; TRISC = 0x00; PORTC = 0b00; TRISD = 0x00; PORTD = 0x00; TRISE = 0x00; PORTE = 0x00; ADCON1 = 7; // disable analog inputs

I2C_Init(100000); // initialize I2C 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(); // issue stop signal

InitDisplay(); oldstate = 0;

// Clock Routine //////////////// do { delay_ms( 100); bSec = DS1307_Read( 0x00); bSec = ((bSec & 0xF0) >> 4)*10 + (bSec & 0b00001111); uSec = (unsigned int)bSec; bMin = DS1307_Read( 0x01); bMin = ((bMin & 0xF0) >> 4)*10 + (bMin & 0b00001111); uMin = (unsigned int)bMin; bStd = DS1307_Read( 0x02); bStd = ((bStd & 0xF0) >> 4)*10 + (bStd & 0b00001111); uStd = (unsigned int)bStd;

bDay = DS1307_Read( 0x04); bDay = ((bDay & 0x30) >> 4)*10 + (bDay & 0b00001111); uDay = (unsigned int)bDay; bMon = DS1307_Read( 0x05); bMon = ((bMon & 0x10) >> 4)*10 + (bMon & 0b00001111); uMon = (unsigned int)bMon; bYear= DS1307_Read( 0x06); bYear = ((bYear & 0xC0)>> 4)*10 + (bYear & 0b00001111); uYear = (unsigned int)bYear + 2000;

sprinti(&output, "%02u:%02u:%02u", uStd, uMin, uSec);



Post subject: Posted: 06 Oct 2008 14:44

Post subject: 18F4550 RTC Problem Posted: 20 Oct 2008 12:11

Post subject: Re: 18F4550 RTC Problem Posted: 21 Oct 2008 13:29

Lcd_out( 1, 7 , output); sprinti(&output, "%02u.%02u.%04u", uDay, uMon, uYear); Lcd_out( 2, 7 , output);

// Menu key pressed? //////////////////// if( KEYPAD_PORT.KEYPAD_MENU == 1) { delay_ms( 250); menu(); } else if( KEYPAD_PORT.KEYPAD_RESET == 1) { delay_ms( 250); Reset_Clock(); };

} while( 1);}

_________________Hobbyist, Pondicherry India

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masterblastersachin


thanx yaar.....


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majerv

Joined: 26 Sep 2008 00:54Posts: 26

Hi Folks!

I've tried dronology's program on a 16F877 and it runs perfect, but not on a 18F4550. I've connected the SDA(pin5) to theRB0 of the PIC and SCL(pin6) to the RB1. I don't know what the problem could be.

I think it must be a config problem.

Any Idea?

Thanx...

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dronology


Dear majerv,

It seems that 18F4550 and 18F4620 (my code based on 4620) have huge differences. SDA and SCL pins of 4620 are locatedon PORTC. SDA‐>RC4 and SCL‐>RC3. I checked 4550. SCL pin is located on RB1 and SDA is located on RB0. On 4550 RB0and RB1 pins contain extra properties such as Analog input and interrupt. Have you disabled analog‐inputs and interruptson this chip before using DS1307 codes?














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