| 5,12 → 5,12 |
|---|
| to an SD card using the SD library. |
| |
| The circuit: |
| * analog sensors on analog ins 0, 1, and 2 |
| * analog sensors on analog ins PC0, PC1, and PC2 |
| * SD card attached to SPI bus as follows: |
| ** MOSI - pin 11 |
| ** MISO - pin 12 |
| ** CLK - pin 13 |
| ** CS - pin 4 |
| ** MOSI - PB3 |
| ** MISO - PB4 |
| ** CLK - PB5 |
| ** CS - PD4 |
| |
| created 24 Nov 2010 |
| updated 2 Dec 2010 |
| 21,11 → 21,6 |
|---|
| */ |
| |
| #include <SD.h> |
| |
| // On the Ethernet Shield, CS is pin 4. Note that even if it's not |
| // used as the CS pin, the hardware CS pin (10 on most Arduino boards, |
| // 53 on the Mega) must be left as an output or the SD library |
| // functions will not work. |
| const int chipSelect = 4; |
| |
| void setup() |
| 45,11 → 40,18 |
|---|
| Serial.println("card initialized."); |
| } |
| |
| int count; |
| |
| void loop() |
| { |
| |
| // make a string for assembling the data to log: |
| String dataString = ""; |
| String dataString = "$"; |
| delay(100); |
| dataString += String(count); // print number of measurement |
| dataString += ","; |
| |
| |
| // read three sensors and append to the string: |
| for (int analogPin = 0; analogPin < 3; analogPin++) { |
| int sensor = analogRead(analogPin); |
| 69,9 → 71,10 |
|---|
| dataFile.close(); |
| // print to the serial port too: |
| Serial.println(dataString); |
| count++; |
| } |
| // if the file isn't open, pop up an error: |
| else { |
| Serial.println("error opening datalog.txt"); |
| } |
| } |
| } |