Example How to Get Data from ADC and Save in SD Card

1/*
2  SD card datalogger
3
4 This example shows how to log data  from three analog sensors
5 to an SD card using the SD library.
6
7 The circuit:
8  * analog sensors on analog ins 0, 1, and 2
9 * SD card attached to SPI bus as  follows:
10 ** MOSI - pin 11
11 ** MISO - pin 12
12 ** CLK - pin 13
13 ** CS  - pin 4
14
15 created  24 Nov 2010
16 modified 9 Apr 2012
17 by Tom Igoe
18
19  This example code is in the public domain.
20
21 */
22
23#include <SPI.h>
24#include  <SD.h>
25
26const int chipSelect = 4;
27
28void setup() {
29  // Open serial  communications and wait for port to open:
30  Serial.begin(9600);
31  while (!Serial)  {
32    ; // wait for serial port to connect. Needed for native USB port only
33  }
34
35
36  Serial.print("Initializing SD card...");
37
38  // see if the  card is present and can be initialized:
39  if (!SD.begin(chipSelect)) {
40    Serial.println("Card  failed, or not present");
41    // don't do anything more:
42    return;
43  }
44  Serial.println("card initialized.");
45
46 File dataFile = SD.open("electro2.txt",  FILE_WRITE);
47
48
49for (int i = 0; i < 2000; i++)
50
51  {
52
53String  dataString = "";
54  
55//dataString += String(i);
56//dataString += ",";
57  int sensor = analogRead(0);
58  dataString += String(sensor);
59
60 dataFile.println(dataString);
61
62  /*
63  if (dataFile) {
64    dataFile.println(dataString);
65    dataFile.close();
66    // print to the serial port too:
67    //Serial.println(dataString);
68  }*/
69  
70
71delay(1);
72}
73 dataFile.close();
74
75
76Serial.println("Archivo  cerrado");
77
78}
79
80
81
82void loop() {
83 
84}
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94

1/*
2  SD card datalogger
3
4 This example shows how to log data
5  from three analog sensors
6 to an SD card using the SD library.
7
8 The circuit:
9
10  * analog sensors on analog ins 0, 1, and 2
11 * SD card attached to SPI bus as
12  follows:
13 ** MOSI - pin 11
14 ** MISO - pin 12
15 ** CLK - pin 13
16 ** CS
17  - pin 4
18
19 created  24 Nov 2010
20 modified 9 Apr 2012
21 by Tom Igoe
22
23
24  This example code is in the public domain.
25
26 */
27
28#include <SPI.h>
29#include
30  <SD.h>
31
32const int chipSelect = 4;
33
34void setup() {
35  // Open serial
36  communications and wait for port to open:
37  Serial.begin(9600);
38  while (!Serial)
39  {
40    ; // wait for serial port to connect. Needed for native USB port only
41
42  }
43
44
45  Serial.print("Initializing SD card...");
46
47  // see if the
48  card is present and can be initialized:
49  if (!SD.begin(chipSelect)) {
50    Serial.println("Card
51  failed, or not present");
52    // don't do anything more:
53    return;
54
55  }
56  Serial.println("card initialized.");
57
58 File dataFile = SD.open("electro2.txt",
59  FILE_WRITE);
60
61
62for (int i = 0; i < 2000; i++)
63
64  {
65
66String
67  dataString = "";
68  
69//dataString += String(i);
70//dataString += ",";
71
72  int sensor = analogRead(0);
73  dataString += String(sensor);
74
75 dataFile.println(dataString);
76
77
78  /*
79  if (dataFile) {
80    dataFile.println(dataString);
81    dataFile.close();
82
83    // print to the serial port too:
84    //Serial.println(dataString);
85  }*/
86
87  
88
89delay(1);
90}
91 dataFile.close();
92
93
94Serial.println("Archivo
95  cerrado");
96
97}
98
99
100
101void loop() {
102 
103}
104
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