Elec351 MMB / Mbed OS SD_CARD_REAL

real honest

Dependencies:   ELEC350-Practicals-FZ429

Fork of Task680solution-mbed-os-FZ429ZI by University of Plymouth - Stages 1, 2 and 3

main.cpp@0:1ce5a958aaf8, 2017-10-20 (annotated)

Committer:
martinsimpson
Date:
Fri Oct 20 11:29:41 2017 +0000
Revision:
0:1ce5a958aaf8
Child:
2:fad34c30dcc4
First draft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
martinsimpson 0:1ce5a958aaf8 1 /* Access an SD Card using SPI */
martinsimpson 0:1ce5a958aaf8 2
martinsimpson 0:1ce5a958aaf8 3 #include "mbed.h"
martinsimpson 0:1ce5a958aaf8 4 #include "SDBlockDevice.h"
martinsimpson 0:1ce5a958aaf8 5 #include "FATFileSystem.h"
martinsimpson 0:1ce5a958aaf8 6
martinsimpson 0:1ce5a958aaf8 7 SDBlockDevice sd(D11, D12, D13, D10); // mosi, miso, sclk, cs
martinsimpson 0:1ce5a958aaf8 8
martinsimpson 0:1ce5a958aaf8 9 uint8_t block[512] = "Hello World!\n";
martinsimpson 0:1ce5a958aaf8 10 int main()
martinsimpson 0:1ce5a958aaf8 11 {
martinsimpson 0:1ce5a958aaf8 12 printf("Initialise and write to a file\n");
martinsimpson 0:1ce5a958aaf8 13 //FileSystemLike(*sd);
martinsimpson 0:1ce5a958aaf8 14
martinsimpson 0:1ce5a958aaf8 15
martinsimpson 0:1ce5a958aaf8 16 // call the SDBlockDevice instance initialisation method.
martinsimpson 0:1ce5a958aaf8 17 if ( 0 != sd.init()) {
martinsimpson 0:1ce5a958aaf8 18 printf("Init failed \n");
martinsimpson 0:1ce5a958aaf8 19 return -1;
martinsimpson 0:1ce5a958aaf8 20 }
martinsimpson 0:1ce5a958aaf8 21 //FileSystemLike(*sd);
martinsimpson 0:1ce5a958aaf8 22
martinsimpson 0:1ce5a958aaf8 23 FATFileSystem fs("sd", &sd);
martinsimpson 0:1ce5a958aaf8 24
martinsimpson 0:1ce5a958aaf8 25
martinsimpson 0:1ce5a958aaf8 26 FILE *fp = fopen("/sd/test.txt","w");
martinsimpson 0:1ce5a958aaf8 27 if(fp == NULL) {
martinsimpson 0:1ce5a958aaf8 28 error("Could not open file for write\n");
martinsimpson 0:1ce5a958aaf8 29 }
martinsimpson 0:1ce5a958aaf8 30
martinsimpson 0:1ce5a958aaf8 31 //Put some text in the file...
martinsimpson 0:1ce5a958aaf8 32 fprintf(fp, "Martin Says Hi! One for the good guys\n");
martinsimpson 0:1ce5a958aaf8 33
martinsimpson 0:1ce5a958aaf8 34 //Tidy up here
martinsimpson 0:1ce5a958aaf8 35 fclose(fp);
martinsimpson 0:1ce5a958aaf8 36 sd.deinit();
martinsimpson 0:1ce5a958aaf8 37 printf("All done...\n");
martinsimpson 0:1ce5a958aaf8 38
martinsimpson 0:1ce5a958aaf8 39 /*
martinsimpson 0:1ce5a958aaf8 40 printf("sd size: %llu\n", sd.size());
martinsimpson 0:1ce5a958aaf8 41 printf("sd read size: %llu\n", sd.get_read_size());
martinsimpson 0:1ce5a958aaf8 42 printf("sd program size: %llu\n", sd.get_program_size());
martinsimpson 0:1ce5a958aaf8 43 printf("sd erase size: %llu\n", sd.get_erase_size());
martinsimpson 0:1ce5a958aaf8 44
martinsimpson 0:1ce5a958aaf8 45 // set the frequency
martinsimpson 0:1ce5a958aaf8 46 if ( 0 != sd.frequency(5000000)) {
martinsimpson 0:1ce5a958aaf8 47 printf("Error setting frequency \n");
martinsimpson 0:1ce5a958aaf8 48 }
martinsimpson 0:1ce5a958aaf8 49
martinsimpson 0:1ce5a958aaf8 50 if ( 0 != sd.erase(0, sd.get_erase_size())) {
martinsimpson 0:1ce5a958aaf8 51 printf("Error Erasing block \n");
martinsimpson 0:1ce5a958aaf8 52 }
martinsimpson 0:1ce5a958aaf8 53
martinsimpson 0:1ce5a958aaf8 54 // Write some the data block to the device
martinsimpson 0:1ce5a958aaf8 55 if ( 0 == sd.program(block, 0, 512)) {
martinsimpson 0:1ce5a958aaf8 56 // read the data block from the device
martinsimpson 0:1ce5a958aaf8 57 if ( 0 == sd.read(block, 0, 512)) {
martinsimpson 0:1ce5a958aaf8 58 // print the contents of the block
martinsimpson 0:1ce5a958aaf8 59 printf("%s", block);
martinsimpson 0:1ce5a958aaf8 60 }
martinsimpson 0:1ce5a958aaf8 61 }
martinsimpson 0:1ce5a958aaf8 62
martinsimpson 0:1ce5a958aaf8 63 // call the SDBlockDevice instance de-initialisation method.
martinsimpson 0:1ce5a958aaf8 64
martinsimpson 0:1ce5a958aaf8 65 sd.deinit();
martinsimpson 0:1ce5a958aaf8 66 */
martinsimpson 0:1ce5a958aaf8 67 }