Pues monto el circuito que veis a continuación
Y en la simulación va correctamente, pero al montarlo en la realidad, el reloj va muy lento, cada segundo, son 17 segundos, qué tengo mal? Además la salida de 1 HZ por el pin 7 no está y eso que la habilito.
Os paso todos los códigos empleados, mi versión de ccs compiler pcwh es la 4.088, ya que con la 4.104 he tenido algunos errores que pone que sobrepasa la memoria y con la otra versión más antigua no.
CÓDIGO FUENTE PRINCIPAL
////////////////////////////////////////////////////////////////////////////////////////////////////
////////////ESTE PROGRAMA UTILZA EL CIRCUITO DS1307 PARA MOSTRAR LA //////////////
//////////HORA EN TIEMPO REAL A TRAVEZ DE UN UNA LCD DE 2 POR 16 CARACTERES/////
///////////////////////////////////////////////////////////////////////////////////////////////////
#include <16F877A.h> /// libreria para el manejo del pic16f877a
#use delay(clock=12000000) /// declara la frecuencia del cristal
#fuses HS,NOWDT,NOPUT,NOLVP,NOBROWNOUT,NOWRT,NOPROTECT
#include <flex_lcd.c>
#include "_ds1307.c"
#use fast_io(A)
#use fast_io(B)
#use fast_io(C) /// con esta instruccion evitamos que
#use fast_io(D) /// se este configurando cada vez que usamos
#use fast_io(E) /// alguna instruccion de entrada o salida
#byte portc = 7 /// se definen direcciones de memoria
#byte portd = 8
int sec;
int min;
int hour;
int day;
int mth;
int year;
int dow;
///////////////////////////////////////////////////////////////////////////////////
//////////////////////Comienzo de la funcion principal//////////////////////////
///////////////////////////////////////////////////////////////////////////////////
void main(){
ds1307_init(DS1307_OUT_ENABLED | DS1307_OUT_1_HZ);
set_tris_a (0x00) ;
set_tris_d (0x00) ;
set_tris_b (0x00) ;
set_tris_c (0xff) ; //set_tris_c (0x04) ;
set_tris_e (0x00) ;
lcd_init (); /// inicializamos lcd
// Set date FOR - > 15 June 2005 Tuesday
// Set time FOR - > 15:20:55 (9:49:00 am)
ds1307_set_date_time (8, 11, 7, 2, 9, 49, 00); /// se escribe en el displositivo
/// el tiempo deseado
WHILE (1){
delay_ms (100) ;
ds1307_get_date (day, mth, year, dow); /// se obtiene la fecha
ds1307_get_time (hour, min, sec); /// se obtiene la hora
lcd_gotoxy (1, 2) ;
printf (lcd_putc, " %02d: %02d: %02d ", hour,min,sec); ///se despliegan los datos
lcd_gotoxy (1, 1) ;
lcd
LIBRERÍA LCD
// flex_lcd.c
// These pins are for the Microchip PicDem2-Plus board,
// which is what I used to test the driver. Change these
// pins to fit your own board.
#define LCD_DB4 PIN_B4
#define LCD_DB5 PIN_B5
#define LCD_DB6 PIN_B6
#define LCD_DB7 PIN_B7
//
#define LCD_RS PIN_B1
#define LCD_RW PIN_B2
#define LCD_E PIN_B0
// If you only want a 6-pin interface to your LCD, then
// connect the R/W pin on the LCD to ground, and comment
// out the following line.
#define USE_LCD_RW 1
//========================================
#define lcd_type 2 // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40 // LCD RAM address for the 2nd line
int8 const LCD_INIT_STRING[4] =
{
0x20 | (lcd_type << 2), // Func set: 4-bit, 2 lines, 5x8 dots
0xc, // Display on
1, // Clear display
6 // Increment cursor
};
//-------------------------------------
void lcd_send_nibble(int8 nibble)
{
// Note: !! converts an integer expression
// to a boolean (1 or 0).
output_bit(LCD_DB4, !!(nibble & 1));
output_bit(LCD_DB5, !!(nibble & 2));
output_bit(LCD_DB6, !!(nibble & 4));
output_bit(LCD_DB7, !!(nibble & 8));
delay_cycles(1);
output_high(LCD_E);
delay_us(2);
output_low(LCD_E);
}
//-----------------------------------
// This sub-routine is only called by lcd_read_byte().
// It's not a stand-alone routine. For example, the
// R/W signal is set high by lcd_read_byte() before
// this routine is called.
#ifdef USE_LCD_RW
int8 lcd_read_nibble(void)
{
int8 retval;
// Create bit variables so that we can easily set
// individual bits in the retval variable.
#bit retval_0 = retval.0
#bit retval_1 = retval.1
#bit retval_2 = retval.2
#bit retval_3 = retval.3
retval = 0;
output_high(LCD_E);
delay_cycles(1);
retval_0 = input(LCD_DB4);
retval_1 = input(LCD_DB5);
retval_2 = input(LCD_DB6);
retval_3 = input(LCD_DB7);
output_low(LCD_E);
return(retval);
}
#endif
//---------------------------------------
// Read a byte from the LCD and return it.
#ifdef USE_LCD_RW
int8 lcd_read_byte(void)
{
int8 low;
int8 high;
output_high(LCD_RW);
delay_cycles(1);
high = lcd_read_nibble();
low = lcd_read_nibble();
return( (high<<4) | low);
}
#endif
//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(int8 address, int8 n)
{
output_low(LCD_RS);
#ifdef USE_LCD_RW
while(bit_test(lcd_read_byte(),7)) ;
#else
delay_us(60);
#endif
if(address)
output_high(LCD_RS);
else
output_low(LCD_RS);
delay_cycles(1);
#ifdef USE_LCD_RW
output_low(LCD_RW);
delay_cycles(1);
#endif
output_low(LCD_E);
lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}
//----------------------------
void lcd_init(void)
{
int8 i;
output_low(LCD_RS);
#ifdef USE_LCD_RW
output_low(LCD_RW);
#endif
output_low(LCD_E);
delay_ms(15);
for(i=0 ;i < 3; i++)
{
lcd_send_nibble(0x03);
delay_ms(5);
}
lcd_send_nibble(0x02);
for(i=0; i < sizeof(LCD_INIT_STRING); i++)
{
lcd_send_byte(0, LCD_INIT_STRING[i]);
// If the R/W signal is not used, then
// the busy bit can't be polled. One of
// the init commands takes longer than
// the hard-coded delay of 60 us, so in
// that case, lets just do a 5 ms delay
// after all four of them.
#ifndef USE_LCD_RW
delay_ms(5);
#endif
}
}
//----------------------------
void lcd_gotoxy(int8 x, int8 y)
{
int8 address;
if(y != 1)
address = lcd_line_two;
else
address=0;
address += x-1;
lcd_send_byte(0, 0x80 | address);
}
//-----------------------------
void lcd_putc(char c)
{
switch(c)
{
case '\f':
lcd_send_byte(0,1);
delay_ms(2);
break;
case '\n':
lcd_gotoxy(1,2);
break;
case '\b':
lcd_send_byte(0,0x10);
break;
default:
lcd_send_byte(1,c);
break;
}
}
//------------------------------
#ifdef USE_LCD_RW
char lcd_getc(int8 x, int8 y)
{
char value;
lcd_gotoxy(x,y);
// Wait until busy flag is low.
while(bit_test(lcd_read_byte(),7));
output_high(LCD_RS);
value = lcd_read_byte();
output_low(lcd_RS);
return(value);
}
#endif
void lcd_setcursor_vb(short visible, short blink) {
lcd_send_byte(0, 0xC|(visible<<1)|blink);
}
LIBRERÍA DS1307
///////////////////////////////////////////////////////////////////////////////////////
/// DS1307.C ///
/// Driver for Real Time Clock ///
/// modified by Redpic 08/2006 ///
/// http://picmania.garcia-cuervo.com ///
/// ///
/// void ds1307_init(val) ///
/// - Enable oscillator without clearing the seconds register ///
/// used when PIC loses power and DS1307 run from 3V BAT ///
/// - Config Control Register with next parameters: ///
/// DS1307_ALL_DISABLED All disabled ///
/// DS1307_OUT_ON_DISABLED_HIHG Out to Hight on Disable Out ///
/// DS1307_OUT_ENABLED Out Enabled ///
/// DS1307_OUT_1_HZ Freq. Out to 1 Hz ///
/// DS1307_OUT_4_KHZ Freq. Out to 4.096 Khz ///
/// DS1307_OUT_8_KHZ Freq. Out to 8.192 Khz ///
/// DS1307_OUT_32_KHZ Freq. Out to 32.768 Khz ///
/// ///
/// Example init: ///
/// ds1307_init(DS1307_ALL_DISABLED); ///
/// ds1307_init(DS1307_OUT_ENABLED | DS1307_OUT_1_HZ); ///
/// ///
/// void ds1307_set_date_time(day,mth,year,dow,hour,min,sec) - Set the date/time ///
/// ///
/// void ds1307_get_date(day,mth,year,dow) - Get the date ///
/// ///
/// void ds1307_get_time(hr,min,sec) - Get the time ///
/// ///
/// char ds1307_read_nvram_byte(char addr) - Read byte in address ///
/// ///
/// void ds1307_write_nvram_byte(char addr, char value) - Write byte in address ///
/// ///
/// void ds1307_get_day_of_week(char* ptr) - Get string Day Of Week///
/// ///
/// If defined USE_INTERRUPTS all functions disable Global Interrupts on starts and ///
/// enable Global on ends else usar can do it hiself ///
/// ///
///////////////////////////////////////////////////////////////////////////////////////
#ifndef RTC_SDA
#define RTC_SDA PIN_C4
#define RTC_SCL PIN_C3
#endif
#use i2c(master, sda=RTC_SDA, scl=RTC_SCL)
#define DS1307_ALL_DISABLED 0b00000000 // All disabled
#define DS1307_OUT_ON_DISABLED_HIHG 0b10000000 // Out to Hight on Disable Out
#define DS1307_OUT_ENABLED 0b00010000 // Out Enabled
#define DS1307_OUT_1_HZ 0b00000000 // Freq. Out to 1 Hz
#define DS1307_OUT_4_KHZ 0b00000001 // Freq. Out to 4.096 Khz
#define DS1307_OUT_8_KHZ 0b00000010 // Freq. Out to 8.192 Khz
#define DS1307_OUT_32_KHZ 0b00000011 // Freq. Out to 32.768 Khz
#define Start_user_address_nvram 0x08
#define End_user_address_nvram 0x3f
char days_of_week[7][11]={"Lunes\0","Martes\0","Miércoles\0","Jueves\0","Viernes\0","Sábado\0","Domingo\0"};
byte ds1307_bin2bcd(byte binary_value);
byte ds1307_bcd2bin(byte bcd_value);
void ds1307_init(int val){
byte seconds = 0;
#ifndef USE_INTERRUPTS
disable_interrupts(global);
#endif
i2c_start();
i2c_write(0xD0);
i2c_write(0x00);
i2c_start();
i2c_write(0xD1);
seconds = ds1307_bcd2bin(i2c_read(0));
i2c_stop();
seconds &= 0x7F;
delay_us(3);
i2c_start();
i2c_write(0xD0);
i2c_write(0x00);
i2c_write(ds1307_bin2bcd(seconds));
i2c_start();
i2c_write(0xD0);
i2c_write(0x07);
i2c_write(val);
i2c_stop();
#ifndef USE_INTERRUPTS
enable_interrupts(global);
#endif
}
void ds1307_set_date_time(byte day, byte mth, byte year, byte dow, byte hr, byte min, byte sec){
#ifndef USE_INTERRUPTS
disable_interrupts(global);
#endif
sec &= 0x7F;
hr &= 0x3F;
i2c_start();
i2c_write(0xD0);
i2c_write(0x00);
i2c_write(ds1307_bin2bcd(sec));
i2c_write(ds1307_bin2bcd(min));
i2c_write(ds1307_bin2bcd(hr));
i2c_write(ds1307_bin2bcd(dow));
i2c_write(ds1307_bin2bcd(day));
i2c_write(ds1307_bin2bcd(mth));
i2c_write(ds1307_bin2bcd(year));
i2c_stop();
#ifndef USE_INTERRUPTS
enable_interrupts(global);
#endif
}
void ds1307_get_date(byte &day, byte &mth, byte &year, byte &dow){
#ifndef USE_INTERRUPTS
disable_interrupts(global);
#endif
i2c_start();
i2c_write(0xD0);
i2c_write(0x03);
i2c_start();
i2c_write(0xD1);
dow = ds1307_bcd2bin(i2c_read() & 0x7f);
day = ds1307_bcd2bin(i2c_read() & 0x3f);
mth = ds1307_bcd2bin(i2c_read() & 0x1f);
year = ds1307_bcd2bin(i2c_read(0));
i2c_stop();
#ifndef USE_INTERRUPTS
enable_interrupts(global);
#endif
}
void ds1307_get_time(byte &hr, byte &min, byte &sec){
#ifndef USE_INTERRUPTS
disable_interrupts(global);
#endif
i2c_start();
i2c_write(0xD0);
i2c_write(0x00);
i2c_start();
i2c_write(0xD1);
sec = ds1307_bcd2bin(i2c_read() & 0x7f);
min = ds1307_bcd2bin(i2c_read() & 0x7f);
hr = ds1307_bcd2bin(i2c_read(0) & 0x3f);
i2c_stop();
#ifndef USE_INTERRUPTS
enable_interrupts(global);
#endif
}
char ds1307_read_nvram_byte(char addr){
char retval;
#ifndef USE_INTERRUPTS
disable_interrupts(global);
#endif
i2c_start();
i2c_write(0xD0);
i2c_write(addr);
i2c_start();
i2c_write(0xD1);
retval = i2c_read(0);
i2c_stop();
return(retval);
#ifndef USE_INTERRUPTS
enable_interrupts(global);
#endif
}
void ds1307_write_nvram_byte(char addr, char value){
#ifndef USE_INTERRUPTS
disable_interrupts(global);
#endif
i2c_start();
i2c_write(0xD0);
i2c_write(addr);
i2c_write(value);
i2c_stop();
#ifndef USE_INTERRUPTS
enable_interrupts(global);
#endif
}
void ds1307_get_day_of_week(char* ptr){
byte lday;
byte lmonth;
byte lyr;
byte ldow;
ds1307_get_date(lday,lmonth,lyr,ldow);
sprintf(ptr,"%s",days_of_week[ldow]);
}
///////////////////////////////////////////////////////////////////////////////
byte ds1307_bin2bcd(byte binary_value){
byte temp;
byte retval;
temp = binary_value;
retval = 0;
while(1){
if(temp >= 10){
temp -= 10;
retval += 0x10;
}else{
retval += temp;
break;
}
}
return(retval);
}
byte ds1307_bcd2bin(byte bcd_value){
byte temp;
temp = bcd_value;
temp >>= 1;
temp &= 0x78;
return(temp + (temp >> 2) + (bcd_value & 0x0f));
}
///////////////////////////////////////////////////////////////////////////////
Les adjunto el programa
http://www.megaupload.com/?d=PCDAZJS9MUCHAS GRÁCIAS, estamos mi profesor y yo mirando por qué puede ser, hay otra persona que postea que cada segundo son 40 segundos (para mi 17) pero no puso si solucionó el tema. Espero que me ayuden y grácias, como ven el código es muy sencillo pero asombrosamente no va.