Bonjour à toutes et à tous
J'utilise un modèle RTC DS1302 pour essayer de dater mes mesures sur une carte SD. Voici le code, si quelqu'un pourrait m'aider à ajouter la ligne de code qu'il me manque ou à modifier mon code s'il n'est pas bon. J'ai essayé pas mal de chose, consulté quelques tutos mais rien;
Je précise que les mesures sont bien enregistrées au format txt sur ma carte SD mais il me manque l'heure.
Merci par avance pour votre aide 
/*
SD card datalogger
The circuit:
- analog sensors on analog ins 0, 1, and 2
- SD card attached to SPI bus as follows:
** MOSI - pin 11
** MISO - pin 12
** CLK - pin 13
** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
*/
#include <SPI.h>
#include <SD.h>
#include <stdio.h>
#include <DS1302.h>
#include <Time.h>
const int chipSelect = 4;
const int kCePin = 5; // Chip Enable
const int kIoPin = 6; // Input/Output
const int kSclkPin = 7; // Serial Clock
// Create a DS1302 object.
DS1302 rtc(kCePin, kIoPin, kSclkPin);
String dayAsString(const Time::Day day) {
switch (day) {
case Time::kSunday: return "Sunday";
case Time::kMonday: return "Monday";
case Time::kTuesday: return "Tuesday";
case Time::kWednesday: return "Wednesday";
case Time::kThursday: return "Thursday";
case Time::kFriday: return "Friday";
case Time::kSaturday: return "Saturday";
}
return "(unknown day)";
}
void printTime() {
// Get the current time and date from the chip.
Time t = rtc.time();
// Name the day of the week.
const String day = dayAsString(t.day);
// Format the time and date and insert into the temporary buffer.
char buf[50];
snprintf(buf, sizeof(buf), "%s %04d-%02d-%02d %02d:%02d:%02d",
day.c_str(),
t.yr, t.mon, t.date,
t.hr, t.min, t.sec);
}
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// Initialize a new chip by turning off write protection and clearing the
// clock halt flag. These methods needn't always be called. See the DS1302
// datasheet for details.
rtc.writeProtect(false);
rtc.halt(false);
// Make a new time object to set the date and time.
// Sunday, September 22, 2013 at 01:38:50.
Time t(2017, 10, 20,19, 38, 50, Time::kThursday);
// Set the time and date on the chip.
rtc.time(t);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initializing SD card...");
// see if the card is present and can be initialized:
if (!SD.begin(chipSelect)) {
Serial.println("Card failed, or not present");
// don't do anything more:
return;
}
Serial.println("card initialized.");
}
void loop() {
// make a string for assembling the data to log:
String dataString = "";
// read three sensors and append to the string:
C'est à ce niveau que je souhaite inscrire la date et l'heure mais je ne vois pas quelle syntaxe utiliser
float sensor1=analogRead(A0);
float temperatureV = ((sensor1*5)/1023);
float temp=((temperatureV-0.5)*100);
dataString += String(temp);
dataString += ",";
float sensor2=analogRead(A1);
float pressionV = ((sensor25)/1023);
float pression = pressionV1000;
dataString += String(pression);
dataString += ",";
float sensor3=analogRead(A2);
float hygroV = ((sensor3*5)/1023);
float hygro = ((hygroV-0.826)/0.0315);
dataString += String(hygro);
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
File dataFile = SD.open("datalog.txt", FILE_WRITE);
// if the file is available, write to it:
if (dataFile) {
dataFile.println(dataString);
dataFile.close();
// print to the serial port too:
Serial.println(dataString);
delay(10000);
}
// if the file isn't open, pop up an error:
else {
Serial.println("error opening datalog.txt");
}
}
