main.cpp

00001 #include "mbed.h"
00002 #include "Flash_USBFileSystem.h"
00003 
00004 DigitalOut myled(LED1);
00005 FlashUSB flash(PTD6, PTD7, PTB11, PTE4);
00006 
00007 void usbCallback(bool available)
00008 {
00009     if (available) {
00010         FILE *fp = fopen("/USB/in.txt", "r");
00011         char buffer[100];
00012         fgets (buffer, 100, fp);
00013         printf("%s\r\n", buffer);
00014         fclose(fp);
00015     }
00016 }
00017 
00018 int main()
00019 {
00020     flash.attachUSB(&usbCallback);
00021     
00022     wait(0.1);
00023     printf("Hello World!\r\n");
00024 
00025     FILE *fp = fopen("/USB/in.txt", "w");
00026 
00027     if(fp == NULL) {
00028         printf("Could not open file, assuming unformatted disk!\r\n");
00029         printf("Formatting disk!\r\n");
00030         flash.format();
00031         printf("Disk formatted!\r\n");
00032         printf("Reset your device!\r\n");
00033         while(1);
00034     } else {
00035         wait(0.2);
00036         fprintf(fp, "Type your text here!");
00037         fclose(fp);
00038     }
00039 
00040     //Connect USB
00041     flash.connect();
00042     flash.usbMode(1);       //Disconnect USB when files are locally written
00043     
00044     char buffer[101];
00045     printf("Type your text here! (100 max length)\n");
00046     while(1) {
00047         gets(buffer);
00048         myled = !myled;
00049         
00050         //Open file for write, keep trying until we succeed
00051         //This is needed because if USB happens to be writing it will fail
00052         while(1) {
00053             fp = fopen("/USB/out.txt", "w");
00054             if (fp != NULL)
00055                 break;
00056             }
00057         fprintf(fp, buffer);
00058         fclose(fp);
00059         
00060     }
00061 
00062 }