Example program for SD card shield on SPI pins D10-D13

Dependencies:   SDFileSystem mbed

The program uses the standard Arduino shields SPI pins:

SignalPin
SCKD13
MISOD12
MOSID11
CSD10

Note that this shield doesn't use the standard SPI pins, but relies on non-standard 6-pin SPI header located at the shield bottom. To make it work you will have to bridge those pins as shown on the image (the green SPI pins).

SignalPin 1Pin 2
MOSID11SPI4
MISOD12SPI1
SCKD13SPI3
CSD10D4

main.cpp

Committer:
screamer
Date:
2014-03-25
Revision:
1:93d41c73ac7d
Parent:
0:525c842a3c89
Child:
2:f2f5e2324ad4

File content as of revision 1:93d41c73ac7d:

#include "mbed.h"
#include "SDFileSystem.h"

SDFileSystem sd(D11, D12, D13, D10, "sd"); // MOSI, MISO, SCK, CS
Serial pc(USBTX, USBRX);
FILE *fp;

int main() {
    wait(2);
    pc.printf("Initializing\r\n");
    
    fp = fopen("/sd/hello.txt", "r");
    if (fp != NULL) {
        fclose(fp);
        remove("/sd/hello.txt");
        pc.printf("Remove an existing file with the same name\r\n");
    }
    
    fp = fopen("/sd/hello.txt", "w");
    if (fp == NULL) {
        pc.printf("Unable to write the file\r\n");
    } else {
        fprintf(fp, "mbed SDCard application!");
        fclose(fp);
        pc.printf("File successfully written!\r\n");
    }
}