arduinoSD卡模块识别不到sd卡，可能是什么原因引起的啊？
连线和代码都没问题，卡的类型和端口选择都没有问题，/**Arduino SD Card Tutorial Example
*
*by Dejan Nedelkovski, www.HowToMechatronics.com
*/
#include <SD.h>
#include <SPI.h>
File myFile;
int pinCS = 53; // Pin 10 on Arduino Uno
void setup() {
Serial.begin(9600);
pinMode(pinCS, OUTPUT);
// SD Card Initialization
if (SD.begin())
{
Serial.println("SD card is ready to use.");
} else
{
Serial.println("SD card initialization failed");
return;
}
// Create/Open file
myFile = SD.open("test.txt", FILE_WRITE);
// if the file opened okay, write to it:
if (myFile) {
Serial.println("Writing to file...");
// Write to file
myFile.println("Testing text 1, 2 ,3...");
myFile.close(); // close the file
Serial.println("Done.");
}
// if the file didn't open, print an error:
else {
Serial.println("error opening test.txt");
}
// Reading the file
myFile = SD.open("test.txt");
if (myFile) {
Serial.println("Read:");
// Reading the whole file
while (myFile.available()) {
Serial.write(myFile.read());
}
myFile.close();
}
else {
Serial.println("error opening test.txt");
}
}
void loop() {
// empty
}
选的2560板子，代码也没有问题，但是显示初始化失败是怎么回事呢
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