Dear Experts,
I am beginner of open hardware system.
I like to know the integrating code of ardunio (grove ardunio shield) with grove RTC timer and humidity and temperature sensor.
with my limited knowledge i have written code: #include <SD.h> #include “DHT.h” #include <Wire.h> #include “RTClib.h” #include “DS1307.h” #define DHTPIN A0 #define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
DS1307 clock; // declare object for DS3234 class
const int chipSelect = 10;
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print(“Initializing SD card…”);
// make sure that the default chip select pin is set to
// output, even if you don’t use it:
pinMode(10, OUTPUT);
// 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.”);
// create a new file
char filename[] = “LOGGER00.CSV”;
for (uint8_t i = 0; i < 100; i++) {
filename[6] = i/10 + ‘0’;
filename[7] = i%10 + ‘0’;
if (! SD.exists(filename)) {
// only open a new file if it doesn’t exist
break; // leave the loop!
}
}
Serial.print("Logging to: ");
Serial.println(filename);
}
void loop()
{
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds ‘old’ (its a very slow sensor)
float h = dht.readHumidity();
float t = dht.readTemperature();
// check if returns are valid, if they are NaN (not a number) then something went wrong!
if (isnan(t) || isnan(h))
{
Serial.println("Failed to read from DHT");
}
else
{
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
Serial.println(" *C");
}
}
in this case no time stamp coming with the result
only temperature and humidity displaying.
I like to display with time stamp.
can peers help me to solve in this issue ?
#include <SD.h>
#include "DHT.h"
#include <Wire.h>
#include "RTClib.h"
#include "DS1307.h"
#define DHTPIN A0
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
DS1307 clock; // declare object for DS3234 class
const int chipSelect = 10;
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print("Initializing SD card...");
// make sure that the default chip select pin is set to
// output, even if you don't use it:
pinMode(10, OUTPUT);
// 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.");
// create a new file
char filename[] = "LOGGER00.CSV";
for (uint8_t i = 0; i < 100; i++) {
filename[6] = i/10 + '0';
filename[7] = i%10 + '0';
if (! SD.exists(filename)) {
// only open a new file if it doesn't exist
break; // leave the loop!
}
}
Serial.print("Logging to: ");
Serial.println(filename);
// Enter the time and date when flashing the program
clock.begin();
clock.fillByYMD(2015,2,10);//Feb 10,2015
clock.fillByHMS(15,28,30);//15:28 30"
clock.fillDayOfWeek(TUE);//Tuesday
clock.setTime();//write time to the RTC chip
}
void loop()
{
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
float h = dht.readHumidity();
float t = dht.readTemperature();
//Time stamp for your program
printTime();
// check if returns are valid, if they are NaN (not a number) then something went wrong!
if (isnan(t) || isnan(h))
{
Serial.println("Failed to read from DHT");
}
else
{
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
Serial.println(" *C");
}
}
void printTime()
{
clock.getTime();
Serial.print(clock.hour, DEC);
Serial.print(":");
Serial.print(clock.minute, DEC);
Serial.print(":");
Serial.print(clock.second, DEC);
Serial.print(" ");
Serial.print(clock.month, DEC);
Serial.print("/");
Serial.print(clock.dayOfMonth, DEC);
Serial.print("/");
Serial.print(clock.year+2000, DEC);
Serial.print(" ");
Serial.print(clock.dayOfMonth);
Serial.print("*");
switch (clock.dayOfWeek)// Friendly printout the weekday
{
case MON:
Serial.print("MON");
break;
case TUE:
Serial.print("TUE");
break;
case WED:
Serial.print("WED");
break;
case THU:
Serial.print("THU");
break;
case FRI:
Serial.print("FRI");
break;
case SAT:
Serial.print("SAT");
break;
case SUN:
Serial.print("SUN");
break;
}
Serial.println(" ");
}
Thank you for your reply.
your corrected code only display the data with time stamp.
The data not stored in the SD card.
can you re-modify the code to store the data into SD card ?
TIA
My hardware is working fine.
I have checked with following code for store the data in csv file it works well.
#include <SD.h>
// On the Ethernet Shield, CS is pin 4. Note that even if it’s not
// used as the CS pin, the hardware CS pin (10 on most Arduino boards,
// 53 on the Mega) must be left as an output or the SD library
// functions will not work.
const int chipSelect = 10;
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print(“Initializing SD card…”);
// make sure that the default chip select pin is set to
// output, even if you don’t use it:
pinMode(10, OUTPUT);
// 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:
for (int analogPin = 0; analogPin < 3; analogPin++) {
int sensor = analogRead(analogPin);
dataString += String(sensor);
if (analogPin < 2) {
dataString += “,”;
}
}
// 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.csv”, 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);
}
// if the file isn’t open, pop up an error:
else {
Serial.println(“error opening datalog.csv”);
}
}
