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Topic: Data Logger & Interrupt (Read 1 time) previous topic - next topic

christian99

Hallo zusammen,

ich versuche gerade den Light-and-Temp-Logger von adafruit (http://www.ladyada.net/make/logshield/lighttemp.html) so abzuwandeln, dass ich mit einem Tastendruck das Logging starten und auch wieder stoppen kann. Dazu habe ich analog zu dieser Anleitung (http://erik-bartmann.de//download/ArduinoInterruptsteuerungTeil1.pdf) ein Interrupt eingefügt. Leider wird andauernd gelogged, egal ob ich die Taste drücke oder nicht.

Danke schon mal für die Hilfestellung!

Hier der Code:

Code: [Select]
#include <SD.h>
#include <Wire.h>
#include "RTClib.h"

// A simple data logger for the Arduino analog pins

// how many milliseconds between grabbing data and logging it. 1000 ms is once a second
#define LOG_INTERVAL  80 // mills between entries (reduce to take more/faster data)

// how many milliseconds before writing the logged data permanently to disk
// set it to the LOG_INTERVAL to write each time (safest)
// set it to 10*LOG_INTERVAL to write all data every 10 datareads, you could lose up to
// the last 10 reads if power is lost but it uses less power and is much faster!
#define SYNC_INTERVAL 20000 // mills between calls to flush() - to write data to the card
uint32_t syncTime = 0; // time of last sync()

#define ECHO_TO_SERIAL   1 // echo data to serial port
#define WAIT_TO_START    0 // Wait for serial input in setup()

// the digital pins that connect to the LEDs
#define redLEDpin 2
#define greenLEDpin 4

// the digital pin for the switch to start logging (tally in)
#define buttonPin 3

// The analog pins that connect to the sensors
#define photocellPin 0           // analog 0
#define tempPin 1                // analog 1
#define BANDGAPREF 14            // special indicator that we want to measure the bandgap

#define aref_voltage 3.3         // we tie 3.3V to ARef and measure it with a multimeter!
#define bandgap_voltage 1.1      // this is not super guaranteed but its not -too- off

RTC_DS1307 RTC; // define the Real Time Clock object

//interrupt number: pin2 = int0 & pin3 = int1
int interruptNumber = 1;

// for the data logging shield, we use digital pin 10 for the SD cs line
const int chipSelect = 10;

//should we do logging?
volatile int loggingStatus = LOW;

// the logging file
File logfile;

void error(char *str)
{
  Serial.print("error: ");
  Serial.println(str);
 
  // red LED indicates error
  digitalWrite(redLEDpin, HIGH);

  while(1);
}

void setup(void)
{
  Serial.begin(9600);
  Serial.println();
 
  // use debugging LEDs
  pinMode(redLEDpin, OUTPUT);
  pinMode(greenLEDpin, OUTPUT);
 
  // use button
  pinMode(buttonPin, INPUT);
 
  //interrupt for setting the logging
  attachInterrupt (interruptNumber, setLoggingStatus, RISING);
 
#if WAIT_TO_START
  Serial.println("Type any character to start");
  while (!Serial.available());
#endif //WAIT_TO_START

  // initialize the SD card
  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)) {
    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");
#if ECHO_TO_SERIAL
    Serial.println("RTC failed");
#endif  //ECHO_TO_SERIAL
  }
 

  logfile.println("millis,stamp,datetime,light,temp,vcc");   
#if ECHO_TO_SERIAL
  Serial.println("millis,stamp,datetime,light,temp,vcc");
#endif //ECHO_TO_SERIAL

  // If you want to set the aref to something other than 5v
  analogReference(EXTERNAL);
}

void loop(void) {
 
  if (loggingStatus = HIGH) {
  DateTime now;

  // delay for the amount of time we want between readings
  delay((LOG_INTERVAL -1) - (millis() % LOG_INTERVAL));
 
  digitalWrite(greenLEDpin, HIGH);
 
  // log milliseconds since starting
  uint32_t m = millis();
  logfile.print(m);           // milliseconds since start
  logfile.print(", ");   
#if ECHO_TO_SERIAL
  Serial.print(m);         // milliseconds since start
  Serial.print(", "); 
#endif

  // fetch the time
  now = RTC.now();
  // log time
  logfile.print(now.unixtime()); // seconds since 1/1/1970
  logfile.print(", ");
  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('"');
#if ECHO_TO_SERIAL
  Serial.print(now.unixtime()); // seconds since 1/1/1970
  Serial.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('"');
  Serial.print(loggingStatus);
#endif //ECHO_TO_SERIAL

  analogRead(photocellPin);
  delay(10);
  int photocellReading = analogRead(photocellPin); 
 
  analogRead(tempPin);
  delay(10);
  int tempReading = analogRead(tempPin);   
 
  // converting that reading to voltage, for 3.3v arduino use 3.3, for 5.0, use 5.0
  float voltage = tempReading * aref_voltage / 1024; 
  float temperatureC = (voltage - 0.5) * 100 ;
  float temperatureF = (temperatureC * 9 / 5) + 32;
 
  logfile.print(", ");   
  logfile.print(photocellReading);
  logfile.print(", ");   
  logfile.print(temperatureF);
#if ECHO_TO_SERIAL
  Serial.print(", ");   
  Serial.print(photocellReading);
  Serial.print(", ");   
  Serial.print(temperatureF);
#endif //ECHO_TO_SERIAL

  // Log the estimated 'VCC' voltage by measuring the internal 1.1v ref
  analogRead(BANDGAPREF);
  delay(10);
  int refReading = analogRead(BANDGAPREF);
  float supplyvoltage = (bandgap_voltage * 1024) / refReading;
 
  logfile.print(", ");
  logfile.print(supplyvoltage);
#if ECHO_TO_SERIAL
  Serial.print(", ");   
  Serial.print(supplyvoltage);
#endif // ECHO_TO_SERIAL

  logfile.println();
#if ECHO_TO_SERIAL
  Serial.println();
#endif // ECHO_TO_SERIAL

  digitalWrite(greenLEDpin, LOW);

  // 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();
 
  // blink LED to show we are syncing data to the card & updating FAT!
  digitalWrite(redLEDpin, HIGH);
  logfile.flush();
  digitalWrite(redLEDpin, LOW);
  }
}


void setLoggingStatus () {
  loggingStatus = !loggingStatus;

}

christian99

...habe gerade den Fehler selbst gefunden: "=" statt "==" in der if Abfrage!

Danke trotzdem ;-)

uwefed

Siehst Du, wir haben Dir schon wieder geholfen. Es genügte unsere geistige Gegenwart.  ;) ;) ;)

Oft hilft eine Pause machen, am nächsten Tag weiterprogrammieren oder einfach mit jemanden reden (in diesem Fall einen Beitrag über Dein Problem schreiben) und es fällt Dir selbst auf was nicht ging.

Viele Grüße Uwe

derder

Falls niemand anders zum reden da ist empfehle ich übrigens sich ein Kuscheltier zu nehmen, ihm einen Namen zu geben, ihn neben den Monitor zu setzen und mit ihm über den code zu reden, funktioniert auch sehr gut ;)

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