Tu Thai / Mbed OS GR-PEACH-mbed-os-storage-access

Sample of using USB memory and SD card on GR-PEACH

Dependencies:   SDBlockDevice_GR_PEACH USBHost_custom

Fork of mbed-os-storage-access by Daiki Kato

main.cpp@0:392df152119c, 2017-03-16 (annotated)

Committer:
dkato
Date:
Thu Mar 16 09:28:46 2017 +0000
Revision:
0:392df152119c
Child:
1:c1b5260c1491
first commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 0:392df152119c 1 #include "mbed.h"
dkato 0:392df152119c 2 #include "FATFileSystem.h"
dkato 0:392df152119c 3 #include "SDBlockDevice_GR_PEACH.h"
dkato 0:392df152119c 4 #include "USBHostMSD.h"
dkato 0:392df152119c 5
dkato 0:392df152119c 6 int main() {
dkato 0:392df152119c 7 int i = 0;
dkato 0:392df152119c 8 int strage_type = 0;
dkato 0:392df152119c 9 char strage_str[16];
dkato 0:392df152119c 10
dkato 0:392df152119c 11 FATFileSystem fs("storage");
dkato 0:392df152119c 12 SDBlockDevice_GR_PEACH sd;
dkato 0:392df152119c 13 USBHostMSD usb;
dkato 0:392df152119c 14
dkato 0:392df152119c 15 while(1) {
dkato 0:392df152119c 16 // try to connect a storage device
dkato 0:392df152119c 17 fs.unmount();
dkato 0:392df152119c 18 while (1) {
dkato 0:392df152119c 19 if (sd.connect()) {
dkato 0:392df152119c 20 strage_type = 0; // SD
dkato 0:392df152119c 21 strcpy(strage_str, "SD card");
dkato 0:392df152119c 22 fs.mount(&sd);
dkato 0:392df152119c 23 break;
dkato 0:392df152119c 24 }
dkato 0:392df152119c 25 if (usb.connect()) {
dkato 0:392df152119c 26 strage_type = 1; // USB
dkato 0:392df152119c 27 strcpy(strage_str, "USB memory");
dkato 0:392df152119c 28 fs.mount(&usb);
dkato 0:392df152119c 29 break;
dkato 0:392df152119c 30 }
dkato 0:392df152119c 31 Thread::wait(500);
dkato 0:392df152119c 32 }
dkato 0:392df152119c 33
dkato 0:392df152119c 34 // in a loop, append a file
dkato 0:392df152119c 35 // if the device is disconnected, we try to connect it again
dkato 0:392df152119c 36 while(1) {
dkato 0:392df152119c 37 // append a file
dkato 0:392df152119c 38 FILE * fp = fopen("/storage/test1.txt", "a");
dkato 0:392df152119c 39
dkato 0:392df152119c 40 if (fp != NULL) {
dkato 0:392df152119c 41 fprintf(fp, "Hello %s World: %d!\r\n", strage_str, i++);
dkato 0:392df152119c 42 printf("Goodbye World!\r\n");
dkato 0:392df152119c 43 fclose(fp);
dkato 0:392df152119c 44 } else {
dkato 0:392df152119c 45 printf("FILE == NULL\r\n");
dkato 0:392df152119c 46 }
dkato 0:392df152119c 47 Thread::wait(500);
dkato 0:392df152119c 48
dkato 0:392df152119c 49 // if device disconnected, try to connect again
dkato 0:392df152119c 50 if (strage_type == 0) {
dkato 0:392df152119c 51 if (!sd.connected()) break;
dkato 0:392df152119c 52 } else {
dkato 0:392df152119c 53 if (!usb.connected()) break;
dkato 0:392df152119c 54 }
dkato 0:392df152119c 55 }
dkato 0:392df152119c 56 }
dkato 0:392df152119c 57 }