Thank you very much Splat and Peter for your quick responses.
Yes, the sequential text file is exactly what I would like. I want it to write to the text file row by row and insert the image name in the very last row written when the laser is tripped then continue on leaving the image column blank until the laser is tripped again.
What I tried doing was having my code for writing the above table shown in the void loop section then add the same code within the IF statement within the void loop section hoping that it would add an entire new row including the image name if the laser was tripped. Right now I only have it trying to input "picture" into the image column because I'm not sure how to call/insert the image name there. This did not work or I was making a mistake somewhere.
Below is the void loop section of the code. I'm very new to this so I apologize if the code is sloppy. Most of the code is pieced together from code others have written.
Thanks,
Eric
void loop() {
delay(50);
LDRValue = analogRead(LDR); //reads the ldr’s value through LDR which we have set to Analog input 0 “A0?
Serial.println(LDRValue); //prints the LDR values to serial monitor
delay(50); //This is the speed by which LDR sends value to arduino
// Get the current time in ms:
long currentTime = millis();
if (currentTime > lastReadTime + interval) {
float humidity = readSensor (HUMIDITY);
float temperature = readSensor(TEMPERATURE);
// open the file:
File dataFile = SD.open("datalog.csv", FILE_WRITE);
// if the file is available, write to it:
if (dataFile) {
DateTime now = rtc.now();
dataFile.print(now.year(), DEC);
dataFile.print('/');
dataFile.print(now.month(), DEC);
dataFile.print('/');
dataFile.print(now.day(), DEC);
dataFile.print(' ');
dataFile.print("\t");
dataFile.print(now.hour(), DEC);
dataFile.print(':');
dataFile.print(now.minute(), DEC);
dataFile.print(':');
dataFile.print(now.second(), DEC);
dataFile.print(' ');
dataFile.print("\t");
dataFile.print(humidity);
dataFile.print(' ');
dataFile.print("\t");
dataFile.println(temperature);
dataFile.close();
// print to the serial port too:
Serial.print(humidity);
Serial.print("\t");
Serial.println(temperature);
lastReadTime = millis();
}
// if the file isn't open, pop up an error:
else {
Serial.println("error opening datalog.csv");
}
}
{
if (LDRValue < light_sensitivity)
{
digitalWrite(13, HIGH);
// When using hardware SPI, the SS pin MUST be set to an
// output (even if not connected or used). If left as a
// floating input w/SPI on, this can cause lockuppage.
#if !defined(SOFTWARE_SPI)
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
if(chipSelect != 53) pinMode(53, OUTPUT); // SS on Mega
#else
if(chipSelect != 10) pinMode(10, OUTPUT); // SS on Uno, etc.
#endif
#endif
Serial.begin(9600);
Serial.println("VC0706 Camera snapshot test");
// Try to locate the camera
if (cam.begin()) {
Serial.println("Camera Found:");
}
else {
Serial.println("No camera found?");
return;
}
// Print out the camera version information (optional)
char *reply = cam.getVersion();
if (reply == 0) {
Serial.print("Failed to get version");
}
else {
Serial.println("-----------------");
Serial.print(reply);
Serial.println("-----------------");
}
// Set the picture size - you can choose one of 640x480, 320x240 or 160x120
// Remember that bigger pictures take longer to transmit!
//cam.setImageSize(VC0706_640x480); // biggest
//cam.setImageSize(VC0706_320x240); // medium
cam.setImageSize(VC0706_160x120); // small
// You can read the size back from the camera (optional, but maybe useful?)
uint8_t imgsize = cam.getImageSize();
Serial.print("Image size: ");
if (imgsize == VC0706_640x480) Serial.println("640x480");
if (imgsize == VC0706_320x240) Serial.println("320x240");
if (imgsize == VC0706_160x120) Serial.println("160x120");
Serial.println("Snap in 3 secs...");
delay(1);
if (! cam.takePicture())
Serial.println("Failed to snap!");
else
Serial.println("Picture taken!");
// Create an image with the name IMAGExx.JPG
char filename[13];
strcpy(filename, "IMAGE000.JPG");
for (int i = 0; i < 1000; i++) {
filename[5] = '0' + i/100;
filename[6] = '0' + i/10;
filename[7] = '0' + i%10;
//create if does not exist, do not open existing, write, sync after write
if (! SD.exists(filename)) {
break;
}
}
// Open the file for writing
File imgFile = SD.open(filename, FILE_WRITE);
// Get the size of the image (frame) taken
uint16_t jpglen = cam.frameLength();
Serial.print("Storing ");
Serial.print(jpglen, DEC);
Serial.print(" byte image.");
int32_t time = millis();
pinMode(53, OUTPUT);
// Read all the data up to # bytes!
byte wCount = 0; // For counting # of writes
while (jpglen > 0) {
// read 32 bytes at a time;
uint8_t *buffer;
uint8_t bytesToRead = min(32, jpglen); // change 32 to 64 for a speedup but may not work with all setups!
buffer = cam.readPicture(bytesToRead);
imgFile.write(buffer, bytesToRead);
if(++wCount >= 64) { // Every 2K, give a little feedback so it doesn't appear locked up
Serial.print('.');
wCount = 0;
}
//Serial.print("Read "); Serial.print(bytesToRead, DEC); Serial.println(" bytes");
jpglen -= bytesToRead;
}
imgFile.close();
time = millis() - time;
Serial.println("done!");
Serial.print(time);
Serial.println(" ms elapsed");
if (currentTime > lastReadTime + interval) {
float humidity = readSensor (HUMIDITY);
float temperature = readSensor(TEMPERATURE);
File dataFile = SD.open("datalog.csv", FILE_WRITE);
DateTime now = rtc.now();
dataFile.print(now.year(), DEC);
dataFile.print('/');
dataFile.print(now.month(), DEC);
dataFile.print('/');
dataFile.print(now.day(), DEC);
dataFile.print(' ');
dataFile.print("\t");
dataFile.print(now.hour(), DEC);
dataFile.print(':');
dataFile.print(now.minute(), DEC);
dataFile.print(':');
dataFile.print(now.second(), DEC);
dataFile.print(' ');
dataFile.print("\t");
dataFile.print(humidity);
dataFile.print(' ');
dataFile.print("\t");
dataFile.println(temperature);
dataFile.close();
dataFile.print(' ');
dataFile.print("\t");
dataFile.println("picture");
dataFile.close();
}
}
if (LDRValue >= light_sensitivity)
{
digitalWrite(13, LOW);
}
}
}