9 years, 2 months ago.

Absolutely nothing Working?

I have an SD Card board, cheap from amazon, wired up to my Renbed (Its a version of the LPC11U24 mbed). I have wired up as all the tutorials suggest, and have a 2gb microSD in an adapter plugged into it. I have tried 3 tutorials now, every time no file is created on the card. I have added a few lines to change the state of an LED so i can see where the program fails, but it never changes state. The MBED official headers do NOT compile, so i am using another version, which claims to be updated - and it actually compiles. If i plug the SD card into my PC its blank. Any ideas on what could be happening?

Thanks in Advance!!

1. include "mbed.h"
2. include "SDFileSystem.h"

SDFileSystem sd(p5, p6, p7, p8, "sd"); DigitalOut myled(p21);

int main() { myled = 0;

FILE *file;

file = fopen("/sd/temp_data.txt", "w"); if(file == NULL) { myled = 1; wait(10); } fprintf(file, "Hello SD Card!\n\r");

DOES a Fast flash but omitted for time being

fclose(file); while(1) { myled = 1; wait(1); myled = 0; wait(1); }

}

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