GOOD, I commented that I have installed a SD Card and it works perfect.
the problem is
I want to read in the arduino Numbers in 0-255. and if I write to the SD memory, in a file
txt for example
12,123,255,0,5
as seen numbers between 0-255, separated by a comma.
arduino with the read () function to read the txt file, it interprets this byte or character,
ie only shows or going one on one like this, '1 ''2' '' '1 ''2' '3 '', 'etc. ...........
which should make the process of composing and filter out ',' to interpret the number arduino.
Because what if I have the arduino relantiza 20000 I comment to make.
i was thinking, thinking, thinking, thinking .....
and because no caracters use directly, according to the code ASSII (http://www.asciitable.com/), and need not
compose, or filter out. but ........
the proplema is that between DEC 0-32 in number, are reserved to speak, which the arduino not me in terpretaria
because these characters are not readable.
i dont know what your problem is,
however, but maybe you can solve 'the problem?' by converting the numbers and than store them, and when u read them out, just deconvert them back to intergers.
Another "Not sure what you're asking" post. I suspect though that you will find the SD library, it's read function, an array of char and the atoi function to be useful components of your solution.
Hard to know what you are trying to say but try the SD example code and modify it from there. I copy the code below:
#include <SD.h>
File myFile;
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(10, OUTPUT);
if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
myFile = SD.open("test.txt", FILE_WRITE);
// if the file opened okay, write to it:
if (myFile) {
Serial.print("Writing to test.txt...");
myFile.println("testing 1, 2, 3.");
// close the file:
myFile.close();
Serial.println("done.");
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
// re-open the file for reading:
myFile = SD.open("test.txt");
if (myFile) {
Serial.println("test.txt:");
// read from the file until there's nothing else in it:
while (myFile.available()) {
Serial.write(myFile.read());
}
// 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
}