就像标题所说,我正在尝试从我的Arduino草图创建一个文本文件。我的Arduino通过以太网线连接到我的电脑,但SD卡安装在Arduino上,所以我假设与计算机(USB或以太网)的连接无关紧要。我在official Arduino documentation上找到的内容似乎很简单,但我无法创建该文件。
这是我的代码:
#include <Bridge.h>
#include <Console.h>
#include <SPI.h>
#include <SD.h>
File myFile;
void setup() {
// Start using the Bridge.
Bridge.begin();
// To output on the Serial Monitor
Console.begin();
// Open serial communications and wait for port to open:
Serial.begin(9600);
if (!SD.begin(4)) {
Console.println("initialization failed!");
//return;
}
Console.println("initialization done.");
myFile = SD.open("test.txt", FILE_WRITE);
if (myFile) {
Console.print("Writing to test.txt...\n");
myFile.println("testing 1, 2, 3.");
// close the file:
myFile.close();
Console.print("done.\n");
} else {
// if the file didn't open, print an error:
Console.print("error opening test.txt\n");
}
// re-open the file for reading:
myFile = SD.open("test.txt");
if (myFile) {
Console.print("test.txt: ");
// read from the file until there's nothing else in it:
while (myFile.available()) {
Console.print(myFile.read());
}
// close the file:
myFile.close();
} else {
// if the file didn't open, print an error:
Console.print("error opening test.txt\n");
}
}
void loop() {
Console.print("Loop\n");
delay(1000);
}
这是输出:
initialization failed!
initialization done.
error opening test.txterror opening test.txt
Loop
[...]
Loop
与我上面提供的链接相反,我使用Console
而不是Serial
作为print语句。其余的都是一样的。我显然已安装了SD卡。
任何人都知道吗?
答案 0 :(得分:0)
正如gre_gor在评论中所建议的那样,我特意为Arduino Yun提供了本教程:https://www.arduino.cc/en/Tutorial/YunDatalogger。我不得不改变SD卡上文件的路径(我的是'/mnt/sda1/myFile.txt'),我不得不在设置功能中删除这两行:
// Delete these two lines:
while (!SerialUSB); // wait for Serial port to connect.
SerialUSB.println("Filesystem datalogger\n");
它有效。