質問編集履歴
2
コードに間違いがありました。
title
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@@ -1,82 +1,84 @@
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Arduino unoで超音波距離センサを用いて観測をしたいです。しかし、下記のコードで試してみたのですがうまくSDカードにデータを記録できませんでした。
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2
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#define echoPin 2 // Echo Pin
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#define trigPin 3 // Trigger Pin
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3
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コード
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```#define echoPin 2 // Echo Pin
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-
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6
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#define trigPin 3 // Trigger Pin
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7
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8
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double Duration = 0; //受信した間隔
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9
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-
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9
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double Distance = 0; //距離
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10
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#include <SD.h>
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#include <SPI.h>
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-
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#include <SD.h>
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void setup() {
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-
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File myFile;
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pinMode( 2, INPUT );
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pinMode( 3, OUTPUT );
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15
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void setup() {
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Serial.begin(9600);
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Serial.begin( 9600 );
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pinMode( 2, INPUT );
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-
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pinMode( 3, OUTPUT );
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; // wait for serial port to connect. Needed for native USB port only
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}
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// Open serial communications and wait for port to open:
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Serial.begin(9600);
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while (!Serial) {
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; // wait for serial port to connect. Needed for native USB port only
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}
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Serial.print("Initializing SD card...");
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if (!SD.begin(4)) {
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Serial.
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Serial.print("Initializing SD card...");
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return;
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}
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Serial.println("initialization done.");
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if (!SD.begin(4)) {
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Serial.println("initialization failed!");
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return;
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}
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Serial.println("initialization done.");
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//
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// open the file. note that only one file can be open at a time,
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if (myFile) {
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// so you have to close this one before opening another.
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myFile.
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myFile = SD.open("test.txt", FILE_WRITE);
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// close the file:
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myFile.close();
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Serial.println("done.");
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} else {
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// if the file didn't open, print an error:
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Serial.println("error opening test.txt");
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}
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//
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// if the file opened okay, write to it:
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myFile = SD.open("test.txt");
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if (myFile) {
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if (myFile) {
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Serial.print("Writing to test.txt...");
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myFile.println("testing 1, 2, 3.");
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// close the file:
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myFile.close();
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Serial.println("
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Serial.println("done.");
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} else {
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// if the file didn't open, print an error:
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Serial.println("error opening test.txt");
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}
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51
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// read from the file until there's nothing else in it:
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while (myFile.available()) {
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Serial.write(myFile.read());
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}
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//
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// re-open the file for reading:
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myFile.close();
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} else {
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// if the file didn't open, print an error:
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myFile = SD.open("test.txt");
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}
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}
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if (myFile) {
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digitalWrite(3, LOW);
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delayMicroseconds(2);
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digitalWrite( 3, HIGH ); //超音波を出力
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delayMicroseconds( 10 ); //
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digitalWrite( 3, LOW );
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Duration = pulseIn( 2, HIGH ); //センサからの入力
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if (Duration > 0) {
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Duration = Duration / 2; //往復距離を半分にする
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75
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Distance = Duration * 340 * 100 / 1000000; // 音速を340m/sに設定
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Serial.
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Serial.println("test.txt:");
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Serial.print(Distance);
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Serial.println(" cm");
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}
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delay(500);
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56
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// read from the file until there's nothing else in it:
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while (myFile.available()) {
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Serial.write(myFile.read());
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}
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}
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// close the file:
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myFile.close();
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} else {
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64
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// if the file didn't open, print an error:
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65
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Serial.println("error opening test.txt");
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}
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}
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void loop() {
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digitalWrite(3, LOW);
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delayMicroseconds(2);
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digitalWrite( 3, HIGH ); //超音波を出力
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delayMicroseconds( 10 ); //
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digitalWrite( 3, LOW );
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Duration = pulseIn( 2, HIGH ); //センサからの入力
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if (Duration > 0) {
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Duration = Duration / 2; //往復距離を半分にする
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77
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Distance = Duration * 340 * 100 / 1000000; // 音速を340m/sに設定
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78
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Serial.print("Distance:");
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Serial.print(Distance);
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Serial.println(" cm");
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}
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delay(500);
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83
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84
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}
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1
コードに間違いがありました。
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -1,33 +1,82 @@
|
|
|
1
|
-
Arduino uno
|
|
1
|
+
Arduino unoで超音波距離センサを用いて観測をしたいです。しかし、下記のコードで試してみたのですがうまくSDカードにデータを記録できませんでした。
|
|
2
2
|
|
|
3
|
-
|
|
4
|
-
Arduino unoに接続した超音波距離センサで観測したデータをマイクロSDカードに記録したいのですが、ソースコードがわかりません。わかる方がいらっしゃいましたら教えてください。
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5
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-
ちなみに超音波距離センサのEchoは3.3Vに繋いでいます。
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|
6
|
-
|
|
7
|
-
|
|
8
3
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#define echoPin 2 // Echo Pin
|
|
9
4
|
#define trigPin 3 // Trigger Pin
|
|
10
5
|
|
|
11
6
|
double Duration = 0; //受信した間隔
|
|
12
7
|
double Distance = 0; //距離
|
|
8
|
+
|
|
9
|
+
#include <SPI.h>
|
|
10
|
+
#include <SD.h>
|
|
11
|
+
|
|
12
|
+
File myFile;
|
|
13
|
+
|
|
13
14
|
void setup() {
|
|
14
|
-
|
|
15
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+
Serial.begin( 9600 );
|
|
15
|
-
|
|
16
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+
pinMode( 2, INPUT );
|
|
16
|
-
|
|
17
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+
pinMode( 3, OUTPUT );
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|
18
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+
|
|
19
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+
// Open serial communications and wait for port to open:
|
|
20
|
+
Serial.begin(9600);
|
|
21
|
+
while (!Serial) {
|
|
22
|
+
; // wait for serial port to connect. Needed for native USB port only
|
|
17
23
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}
|
|
24
|
+
|
|
25
|
+
|
|
26
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+
Serial.print("Initializing SD card...");
|
|
27
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+
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|
28
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+
if (!SD.begin(4)) {
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29
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+
Serial.println("initialization failed!");
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30
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+
return;
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31
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+
}
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32
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+
Serial.println("initialization done.");
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|
33
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+
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|
34
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+
// open the file. note that only one file can be open at a time,
|
|
35
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+
// so you have to close this one before opening another.
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|
36
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+
myFile = SD.open("test.txt", FILE_WRITE);
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|
37
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+
|
|
38
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+
// if the file opened okay, write to it:
|
|
39
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+
if (myFile) {
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|
40
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+
Serial.print("Writing to test.txt...");
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41
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+
myFile.println("testing 1, 2, 3.");
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42
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+
// close the file:
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43
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+
myFile.close();
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44
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+
Serial.println("done.");
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45
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+
} else {
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46
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+
// if the file didn't open, print an error:
|
|
47
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+
Serial.println("error opening test.txt");
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48
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+
}
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|
49
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+
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50
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+
// re-open the file for reading:
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51
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+
myFile = SD.open("test.txt");
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52
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+
if (myFile) {
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53
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Serial.println("test.txt:");
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54
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+
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55
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+
// read from the file until there's nothing else in it:
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56
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+
while (myFile.available()) {
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57
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Serial.write(myFile.read());
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58
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}
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59
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+
// close the file:
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60
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+
myFile.close();
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61
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+
} else {
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62
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+
// if the file didn't open, print an error:
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63
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+
Serial.println("error opening test.txt");
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64
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+
}
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65
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}
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18
66
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void loop() {
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19
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-
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67
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digitalWrite(3, LOW);
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20
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-
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68
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delayMicroseconds(2);
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21
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-
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69
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digitalWrite( 3, HIGH ); //超音波を出力
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22
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-
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70
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+
delayMicroseconds( 10 ); //
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23
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-
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71
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+
digitalWrite( 3, LOW );
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24
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-
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72
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+
Duration = pulseIn( 2, HIGH ); //センサからの入力
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25
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-
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73
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+
if (Duration > 0) {
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26
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-
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74
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+
Duration = Duration / 2; //往復距離を半分にする
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27
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-
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75
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+
Distance = Duration * 340 * 100 / 1000000; // 音速を340m/sに設定
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28
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-
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76
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+
Serial.print("Distance:");
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29
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-
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77
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Serial.print(Distance);
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30
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-
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78
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Serial.println(" cm");
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31
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-
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79
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}
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32
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-
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80
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delay(500);
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81
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+
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33
82
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}
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