Plymouth University UK SoCEM Staff / Mbed 2 deprecated SDFileSystem_HelloWorld

test

Dependencies:   SDFileSystem mbed

Fork of SDFileSystem_HelloWorld by mbed official

main.cpp@4:73d5d4c507c9, 2017-10-19 (annotated)

Committer:
martinsimpson
Date:
Thu Oct 19 10:13:52 2017 +0000
Revision:
4:73d5d4c507c9
Parent:
2:886ae0153478 
First Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:bdbd3d6fc5d5 1 #include "mbed.h"
mbed_official 0:bdbd3d6fc5d5 2 #include "SDFileSystem.h"
mbed_official 0:bdbd3d6fc5d5 3
martinsimpson 4:73d5d4c507c9 4
martinsimpson 4:73d5d4c507c9 5 //SDFileSystem sd(mosi, miso, sclk, cs, "sd");
martinsimpson 4:73d5d4c507c9 6
martinsimpson 2:886ae0153478 7 SDFileSystem sd(D11, D12, D13, D10, "sd"); // the pinout on the mbed Cool Components workshop board
martinsimpson 2:886ae0153478 8
martinsimpson 4:73d5d4c507c9 9 /* on the Break out Module
martinsimpson 4:73d5d4c507c9 10 G = GND goes to GND 0V
martinsimpson 4:73d5d4c507c9 11 DO = Digital Out goes to MISO D12
martinsimpson 4:73d5d4c507c9 12 CLK = Clock goes to SCLK D13
martinsimpson 4:73d5d4c507c9 13 DI = Digital In goes to MOSI D11
martinsimpson 4:73d5d4c507c9 14 CS = Chip Select goes to CS D10
martinsimpson 4:73d5d4c507c9 15 + = +ve supply goes to 3V3 Check! Slider switch on SD side is set to 3V3
martinsimpson 4:73d5d4c507c9 16 */
martinsimpson 4:73d5d4c507c9 17 // FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");//Open device "sd" with a folder "mdir" of root on the SD card
martinsimpson 4:73d5d4c507c9 18
martinsimpson 4:73d5d4c507c9 19
martinsimpson 2:886ae0153478 20 char myStr[128];
martinsimpson 2:886ae0153478 21
mbed_official 0:bdbd3d6fc5d5 22 int main() {
martinsimpson 2:886ae0153478 23 printf("Start to write!\n");
mbed_official 0:bdbd3d6fc5d5 24
mbed_official 0:bdbd3d6fc5d5 25 mkdir("/sd/mydir", 0777);
mbed_official 0:bdbd3d6fc5d5 26
mbed_official 0:bdbd3d6fc5d5 27 FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
mbed_official 0:bdbd3d6fc5d5 28 if(fp == NULL) {
mbed_official 0:bdbd3d6fc5d5 29 error("Could not open file for write\n");
mbed_official 0:bdbd3d6fc5d5 30 }
martinsimpson 2:886ae0153478 31 fprintf(fp, "Hello World!");
martinsimpson 2:886ae0153478 32 fprintf(fp, "This is a second line");
martinsimpson 2:886ae0153478 33 fprintf(fp, "and now a third line");
mbed_official 0:bdbd3d6fc5d5 34 fclose(fp);
mbed_official 0:bdbd3d6fc5d5 35
martinsimpson 2:886ae0153478 36 printf("Finished writing and closed file\n");
martinsimpson 2:886ae0153478 37
martinsimpson 2:886ae0153478 38 FILE *fp1 = fopen("/sd/mydir/sdtest.txt", "r");
martinsimpson 2:886ae0153478 39 //fscanf(fp1, "%s", myStr);
martinsimpson 2:886ae0153478 40 fgets(myStr, 12, fp1);
martinsimpson 2:886ae0153478 41 printf("\t%s\n\r",myStr);
martinsimpson 2:886ae0153478 42 fclose(fp1);
mbed_official 0:bdbd3d6fc5d5 43 }