error "lcd.init"

Projects Programming
1

i don't speak english so... be understanding please:

This is my code

#include <Wire.h>
#include "RTClib.h"
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
RTC_DS1307 RTC;
void setup () {
Wire.begin(); // Inicia el puerto I2C
RTC.begin(); // Inicia la comunicaci¢n con el RTC
RTC.adjust(DateTime(__DATE__, __TIME__)); // Establece la fecha y hora (Comentar una vez establecida la hora)
//el anterior se usa solo en la configuracion inicial
Serial.begin(9600); // Establece la velocidad de datos del puerto serie
lcd.init();
lcd.backlight();
 lcd.clear();
}
void loop(){
DateTime now = RTC.now(); // Obtiene la fecha y hora del RTC
  
Serial.print(now.year(), DEC); // A¤o
Serial.print('/');
Serial.print(now.month(), DEC); // Mes
Serial.print('/');
Serial.print(now.day(), DEC); // Dia
Serial.print(' ');
Serial.print(now.hour(), DEC); // Horas
Serial.print(':');

Serial.print(now.minute(), DEC); // Minutos
Serial.print(':');
Serial.print(now.second(), DEC); // Segundos
Serial.println();
lcd.setCursor(0,0);
lcd.print("D:");
lcd.print(now.year(), DEC);
lcd.print("/");
lcd.print(now.month(), DEC);
lcd.print("/");
lcd.print(now.day(), DEC);
lcd.print(" ");
lcd.setCursor(0,1);
lcd.print("T: ");
lcd.print(now.hour(), DEC);
lcd.print(":");
lcd.print(now.minute(), DEC);
lcd.print(":");
lcd.print(now.second(), DEC);
delay(1000); // La informaci¢n se actualiza cada 1 seg.
lcd.setCursor(0,0);
lcd.print("               ");
lcd.setCursor(0,1);
lcd.print("               ");

}

AND THIS IS THE ERROR:

C:\Users\RGA2\Music\Documents\Arduino\controlador_de_reloj\controlador_de_reloj.ino:10:32: warning: invalid conversion from 'int' to 't_backlighPol' [-fpermissive]

LiquidCrystal_I2C lcd(0x27,16,2);

^

In file included from C:\Users\RGA2\Music\Documents\Arduino\controlador_de_reloj\controlador_de_reloj.ino:9:0:

C:\Users\RGA2\Music\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:53:4: note: initializing argument 3 of 'LiquidCrystal_I2C::LiquidCrystal_I2C(uint8_t, uint8_t, t_backlighPol)'

LiquidCrystal_I2C (uint8_t lcd_Addr, uint8_t backlighPin, t_backlighPol pol);

^

C:\Users\RGA2\Music\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h: In function 'void setup()':

C:\Users\RGA2\Music\Documents\Arduino\libraries\LiquidCrystal/LiquidCrystal_I2C.h:154:9: error: 'int LiquidCrystal_I2C::init()' is private

int init();

^

controlador_de_reloj:18: error: within this context

lcd.init();

^

exit status 1
within this context

PLEASE, HELP ME

2

When posting code, please use code tags. Please edit your post and add
** **[code]** **
before your code and
** **[/code]** **
after your code.

Please provide a link to the LiquidCrystal_I2C library that you use.

3

The usual call is lcd.begin(), not init().

4

The LiquidCrystal_I2C.h available through the library manager uses init().

void LiquidCrystal_I2C::init(){
	init_priv();
}

void LiquidCrystal_I2C::init_priv()
{
	Wire.begin();
	_displayfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
	begin(_cols, _rows);  
}

init() is also listed as a public function in the .h file. It calls a private function.

The OP has not yet posted a link to his library, but my guess it is not the one available through the library manager.

5

thanks, i can resolve this problem, just download other version of the library, but now I have a new problem, this code is for un RTC... and now the clock does not show the time, simply show a wrong number:
2165/165/165 165:165:85
2165/165/165 165:165:85
and repeat this number without advancing

6

Please run this i2c scanner program and verify that the RTC is seen on the bus by the arduino.

What address are reported back? You should see two or three--one for the lcd, one for the rtc, and sometimes a third address for an eeprom on the rtc module. DS1307 should be address 0x68. 0x50 will be an eeprom, and your lcd should be at 0x27 according to your sketch.

// I2C Scanner
// Written by Nick Gammon
// Date: 20th April 2011

#include <Wire.h>

void setup() {
  Serial.begin (115200);

  // Leonardo: wait for serial port to connect
  while (!Serial) 
    {
    }

  Serial.println ();
  Serial.println ("I2C scanner. Scanning ...");
  byte count = 0;
  
  Wire.begin();
  for (byte i = 8; i < 120; i++)
  {
    Wire.beginTransmission (i);
    if (Wire.endTransmission () == 0)
      {
      Serial.print ("Found address: ");
      Serial.print (i, DEC);
      Serial.print (" (0x");
      Serial.print (i, HEX);
      Serial.println (")");
      count++;
      delay (1);  // maybe unneeded?
      } // end of good response
  } // end of for loop
  Serial.println ("Done.");
  Serial.print ("Found ");
  Serial.print (count, DEC);
  Serial.println (" device(s).");
}  // end of setup

void loop() {}