我有-32,-20,-30,-35,-40,-45存储到SD卡Test.cal文件。我想把它们放入char中,然后把它们放到数组中没有逗号的数组中。在结束时,结果会是这样,阵列[0] = - 32,阵列[1] = - 20 .....获取价值SD卡的文件
请帮助!!!!!
/*
SD card read/write
This example shows how to read and write data to and from an SD card file
The circuit:
* SD card attached to SPI bus as follows:
** MOSI - pin 11
** MISO - pin 12
** CLK - pin 13
** CS - pin 4
created Nov 2010
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
This example code is in the public domain.
*/
#include <SD.h>
char inData[20];
int index=0;
char inchar ;
File myFile;
String test;
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print("Initializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(53, OUTPUT);
if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
// re-open the file for reading:
myFile = SD.open("Test.cal");
if (myFile) {
Serial.println("test.txt:");
// read from the file until there's nothing else in it:
while (myFile.available()) {
inchar= myFile.read();
Serial.print(inchar);
inData[index]=inchar;
index++;
}
// close the file:
myFile.close();
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
}
void loop()
{
// nothing happens after setup
}
又有什么问题?我看到了你想要的东西,一堆代码和一声求救的描述 - 但没有描述你遇到的实际麻烦。请记住,在这里,我们很乐意帮助您解决实际问题,但有一个非常强烈的共识,我们不会为您编写代码。 – fvu
问题是下面的代码,我可以从inchar读取测试。并尝试将其存储到char数组中,但未能这样做。你可以给我一些建议 inchar = myFile.read(); Serial.print(inchar); inData [index] = inchar; index ++;的 – Yang
可能重复[如何从SD卡号码?](http://stackoverflow.com/questions/19712528/how-to-get-numbers-from-sd-card) –