[resolu] horloge rtc et lcd

International Français
5

Matériel :
LCD Serial 16x2 http://www.evola.fr/product_info.php/lcd-16x2-liaison-serie-grove-p-238
Horloge RTC DS1307 http://www.evola.fr/product_info.php/horloge-temps-reel-ds1307-p-156

Les branchements c'est ceux des tutos ...

1er test , branchement :
LCD Res.Var. 10K Leonardo
pin 1 GND pin milieu -
pin 2 VCC pin droite -
pin 3 V0 pin milieu -
pin 4 RS - pin 13
pin 5 R/W pin gauche
pin 6 E - pin 12
pin 7 - -
pin 8 - -
pin 9 - -
pin 10 - -
pin 11 D4 - pin 5
pin 12 D5 - pin 4
pin 13 D6 - pin 3
pin 14 D7 - pin 2
pin 15 - -
pin 16 - -

  • pin droite 5V
    pin gauche GND
    code :
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  lcd.print(millis()/1000);
}

=> ca marche nickel

2ième test (en laissant branché le LCD) :

RTC Leonardo
SCL SCL
SDA SDA
VCC 5V
GND GND

code:

#include <Wire.h>
#include "RTClib.h"

RTC_DS1307 RTC;

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

  if (! RTC.isrunning()) {
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }
}

void loop () {
    DateTime now = RTC.now();
    
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(' ');
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();
    
    delay(3000);
}

=> ca marche nickel

3ième test on melange les 2 codes :

code:

#include <LiquidCrystal.h>

  #include <Wire.h>
  #include "RTClib.h"

  RTC_DS1307 RTC;

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
  
    Wire.begin();
    RTC.begin();
    if (! RTC.isrunning()) {
      RTC.adjust(DateTime(__DATE__, __TIME__));
    }
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  //lcd.print(millis()/1000);
  
    DateTime now = RTC.now();
    lcd.print("sec=");
    lcd.print(now.second());
}

=> j'ai plus les milisec sur la 2ième ligne du LCD et j'ai des caractères japonnais à droite ...