Lcd and rtc project

Projects Programming
1

Hello, I'm Santiago and I'm looking for an answer to a problem, I was doing a project with a rtc 1302 and a lcd with an I2C and it does not detect the threeWire MyWire code, so you can tell me how to solve it postscript: the problem is in the code, not in the connection.

2

Don’t you think it will help if you would actually share the code?
And how do you know it’s not the circuit?

PS: I moved your post to a more suitable forum. do yourself a favour and please read How to get the best out of this forum and modify your post accordingly (including code tags and necessary documentation for your ask).

3

ok sorry, the code is

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
//SE AGREGA LIBRERÍAS PARA RTC

#include <ThreeWire.h>
#include <RtcDS1302.h>

ThreeWire myWire(4,5,2); // IO, SCLK, CE
RtcDS1302 Rtc(myWire);

void setup ()
{
Serial.begin(57600);

Serial.print("compiled: ");
Serial.print(__DATE__);
Serial.println(__TIME__);

Rtc.Begin();

RtcDateTime compiled = RtcDateTime(__DATE__, __TIME__);
printDateTime(compiled);
Serial.println();

if (!Rtc.IsDateTimeValid()) 
{
    // Common Causes:
    //    1) first time you ran and the device wasn't running yet
    //    2) the battery on the device is low or even missing

    Serial.println("RTC lost confidence in the DateTime!");
    Rtc.SetDateTime(compiled);
}

if (Rtc.GetIsWriteProtected())
{
    Serial.println("RTC was write protected, enabling writing now");
    Rtc.SetIsWriteProtected(false);
}

if (!Rtc.GetIsRunning())
{
    Serial.println("RTC was not actively running, starting now");
    Rtc.SetIsRunning(true);
}

RtcDateTime now = Rtc.GetDateTime();
if (now < compiled) 
{
    Serial.println("RTC is older than compile time!  (Updating DateTime)");
    Rtc.SetDateTime(compiled);
}
else if (now > compiled) 
{
    Serial.println("RTC is newer than compile time. (this is expected)");
}
else if (now == compiled) 
{
    Serial.println("RTC is the same as compile time! (not expected but all is fine)");
}

}

void loop ()
{
RtcDateTime now = Rtc.GetDateTime();

printDateTime(now);
Serial.println();

if (!now.IsValid())
{
    // Common Causes:
    //    1) the battery on the device is low or even missing and the power line was disconnected
    Serial.println("RTC lost confidence in the DateTime!");
}

delay(10000); // ten seconds

}

#define countof(a) (sizeof(a) / sizeof(a[0]))

void printDateTime(const RtcDateTime& dt)
{
char datestring[20];

snprintf_P(datestring, 
        countof(datestring),
        PSTR("%02u/%02u/%04u %02u:%02u:%02u"),
        dt.Month(),
        dt.Day(),
        dt.Year(),
        dt.Hour(),
        dt.Minute(),
        dt.Second() );
Serial.print(datestring);

}

#include <ThreeWire.h>
#include <RtcDS1302.h>
//SE CREA Y CONFIGURA OBJETO PARA MANEJAR RTC
ThreeWire myWire(4,5,2); // IO, SCLK, CE
RtcDS1302 Rtc(myWire);

void setup () {
// SE INICAR MONITOR SERIE E IMPRIME FECHA Y HORA
Serial.begin(57600);
Serial.print("CONFIGURACIÓN INICIAL ");
Serial.print(DATE);
Serial.println(TIME);
lcd.begin(16,2); //SE INICIARLIZA LCD
Rtc.Begin();// SE INICIALIZA RTC
RtcDateTime compiled = RtcDateTime(DATE, TIME);//SE CONFIGURA FECHA Y HORA ACTUAL
printDateTime(compiled); //SE IMPRIME FECHA Y HORA
Rtc.SetDateTime(compiled);
Serial.println();
}

void loop () {
//SE OBTENIE FECHA Y HORA ACTUAL Y SE ACTUALIZA
RtcDateTime now = Rtc.GetDateTime();
printDateTime(now);
Serial.println();
if (!now.IsValid()){
Serial.println("ERROR EN FECHA Y HORA");
}
delay(1000);
//RETARDO DE 1 SEGUNDO
}

#define countof(a) (sizeof(a) / sizeof(a[0]))

//FUNCION PARA IMPRIMIR FECHA Y HORA CON FORMATO ADECUADO
void printDateTime(const RtcDateTime& dt){
char datestring[20];
snprintf_P(datestring,
countof(datestring),
PSTR("%02u/%02u/%04u %02u:%02u:%02u"),//SE CONFURA FORMATO DE FECHA Y HORA
dt.Month(),
dt.Day(),
dt.Year(),
dt.Hour(),
dt.Minute(),
dt.Second() );
//SE IMPRIME LA FECHA Y HORA EN LCD
lcd.setCursor(0,0);
lcd.print("DATE ");
lcd.print(dt.Month());
lcd.print("/");
lcd.print(dt.Day());
lcd.print("/");
lcd.print(dt.Year());
lcd.print(" ");
lcd.setCursor(0,14);
lcd.print(" ");
lcd.setCursor(0,1);
lcd.print("TIME ");
lcd.print(dt.Hour());
lcd.print(":");
lcd.print(dt.Minute());
lcd.print(":");
lcd.print(dt.Second());
lcd.print(" ");
Serial.print(datestring);//SE IMPRIME EN MONITOR SERIE
}

4

sorry I'm new to this forum

5

" it does not detect the threeWire MyWire code "

What does this mean? Do you get an error? If you do, can you post it as my crystal ball is in for a service.

You also have 2 setup & 2 loop - NOT allowed.

7

English please, or go to the Spanish section.

9

thanks for you help friend , i solved that problem

10

Post how you solved the problem for others, it may help them.

11

New is not an excuse for not reading and applying the rules … please add code tags

12

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