arduino stuffs
Diffstat (limited to 'libraries/SD/examples/Datalogger/Datalogger.ino')
| -rw-r--r-- | libraries/SD/examples/Datalogger/Datalogger.ino | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/libraries/SD/examples/Datalogger/Datalogger.ino b/libraries/SD/examples/Datalogger/Datalogger.ino new file mode 100644 index 0000000..c2631c0 --- /dev/null +++ b/libraries/SD/examples/Datalogger/Datalogger.ino @@ -0,0 +1,84 @@ +/* + 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"); + } +} + + + + + + + + + |