I have tried this:
- The "pcf8523" sketch from the RTClib examples. This "works", I had to set the time manually, I could not use the rtc.adjust(DateTime(F(__DATE__), F(__TIME__))) function. But it prints the time and date to the serial monitor.
The "DHT_Unified_Sensor sketch also runs fine, it displays the temperature and humidity to the serial monitor.
It feels like there is a conflict between the modules. But I can't see/understand where/how?
millis,datetime,temp,humid
999, "2010/23/49 8:0:0", 23.80, 45.00
1999, "2010/23/49 8:0:0", 23.80, 45.00
2999, "2010/23/49 8:0:0", 23.80, 45.30
- IMG_5234_2.JPEG (535.76 KiB) Viewed 268 times
Code: Select all
#include <SPI.h>
#include <SD.h>
#include <Wire.h>
#include "RTClib.h"
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define DHTPIN 2 // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22 // DHT 22 (AM2302)
DHT_Unified dht(DHTPIN, DHTTYPE);
// how many milliseconds between grabbing data and logging it. 1000 ms is once a second
#define LOG_INTERVAL 1000 // mills between entries (reduce to take more/faster data)
#define SYNC_INTERVAL 1000 // mills between calls to flush() - to write data to the card
uint32_t syncTime = 0; // time of last sync()
RTC_DS1307 RTC; // define the Real Time Clock object
// for the data logging shield, we use digital pin 10 for the SD cs line
const int chipSelect = 10;
// the logging file
File logfile;
void error(char *str)
{
Serial.print("error: ");
Serial.println(str);
while(1);
}
void setup(void)
{
Serial.begin(9600);
#ifndef ESP8266
while (!Serial); // wait for serial port to connect. Needed for native USB
#endif
dht.begin(); // Initialize DHT device.
// initialize the SD card
Serial.println();
Serial.print("Initializing SD card...");
Serial.flush();
// 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)) {
error("Card failed, or not present");
}
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
logfile = SD.open(filename, FILE_WRITE);
break; // leave the loop!
}
}
if (! logfile) {
error("couldnt create file");
}
Serial.print("Logging to: ");
Serial.println(filename);
// connect to RTC
Wire.begin();
if (!RTC.begin()) {
logfile.println("RTC failed");
Serial.println("RTC failed");
}
logfile.println("millis,datetime,temp,humid");
Serial.println("millis,datetime,temp,humid");
}
void loop(void)
{
DateTime now;
// delay for the amount of time we want between readings
delay((LOG_INTERVAL -1) - (millis() % LOG_INTERVAL));
// log milliseconds since starting
uint32_t m = millis();
logfile.print(m); // milliseconds since start
logfile.print(", ");
Serial.print(m); // milliseconds since start
Serial.print(", ");
// fetch the time
now = RTC.now();
// log time
logfile.print('"');
logfile.print(now.year(), DEC);
logfile.print("/");
logfile.print(now.month(), DEC);
logfile.print("/");
logfile.print(now.day(), DEC);
logfile.print(" ");
logfile.print(now.hour(), DEC);
logfile.print(":");
logfile.print(now.minute(), DEC);
logfile.print(":");
logfile.print(now.second(), DEC);
logfile.print('"');
Serial.print('"');
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.print('"');
// Get temperature event and print its value.
sensors_event_t event;
dht.temperature().getEvent(&event);
if (isnan(event.temperature)) {
Serial.println(F("Error reading temperature!"));
}
else {
Serial.print(F("Temperature: "));
Serial.print(event.temperature);
Serial.print(F("°C"));
logfile.print(", ");
logfile.print(event.temperature);
}
// Get humidity event and print its value.
dht.humidity().getEvent(&event);
if (isnan(event.relative_humidity)) {
Serial.println(F("Error reading humidity!"));
}
else {
Serial.print(F("Humidity: "));
Serial.print(event.relative_humidity);
Serial.println(F("%"));
logfile.print(", ");
logfile.print(event.relative_humidity);
}
logfile.println();
// Now we write data to disk! Don't sync too often - requires 2048 bytes of I/O to SD card
// which uses a bunch of power and takes time
if ((millis() - syncTime) < SYNC_INTERVAL) return;
syncTime = millis();
logfile.flush();
}