Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- /*
- SD card datalogger
- This example shows how to log data from three analog sensors
- to an SD card using the SD library.
- The circuit:
- analog sensors on analog ins 0, 1, and 2
- SD card attached to SPI bus as follows:
- ** MOSI - pin 11
- ** MISO - pin 12
- ** CLK - pin 13
- ** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
- created 24 Nov 2010
- modified 9 Apr 2012
- by Tom Igoe
- This example code is in the public domain.
- */
- #include <SPI.h>
- #include <SD.h>
- const int chipSelect = 4;
- void setup() {
- // Open serial communications and wait for port to open:
- Serial.begin(9600);
- while (!Serial) {
- ; // wait for serial port to connect. Needed for native USB port only
- }
- Serial.print("Initializing SD card...");
- // 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:
- while (1);
- }
- 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.txt", 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.txt");
- }
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement