hi all,
i have been using the adafruit sd shield to log serial data. I am having trouble getting the data to log onto the SD card. The information is displaying on the serial monitor. I have attached to could with a pointer as to where i think the problem might lie but having trouble getting past it. Any help would be appreciated.
#include "SD.h"
#include <Wire.h>
#include "RTClib.h"
// A simple data logger for the Arduino analog pins
#define LOG_INTERVAL 1000 // mills between entries
#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 3
#define greenLEDpin 4
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;
File logfile; // This is the logging file
// 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();
#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)) {
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
logfile = SD.open(filename, FILE_WRITE);
break; // leave the loop!
}
}
if (! logfile) { error("couldnt create file"); }
Serial.print("Logging to: ");
Serial.println(filename);
Wire.begin();
if (!RTC.begin()) {
logfile.println("RTC failed");
#if ECHO_TO_SERIAL
Serial.println("RTC failed");
#endif //ECHO_TO_SERIAL }
logfile.println("Multi sniffer");
if ECHO_TO_SERIAL
Serial.println("Multi sniffer");
if ECHO_TO_SERIAL // attempt to write out the header to the file
if logfile.write() { <------------------Here i think the problem lies
error("write header");
//}
pinMode(redLEDpin, OUTPUT);
pinMode(greenLEDpin, OUTPUT);
// If you want to set the aref to something other than 5v
//analogReference(EXTERNAL); }
}
}
void loop(void) {
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(", ");
logfile.print(now.year(), DEC);
logfile.write(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);
#if ECHO_TO_SERIAL
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);
#endif //ECHO_TO_SERIAL
int my_array[9] = {0}; //This has to read the serial input
int i;
// display each number from the array in the serial monitor window
for (int i = 0; i < 9; i++){
Serial.println(my_array[i]);
digitalWrite(greenLEDpin, LOW);
}
}
