USBHost : modify USB_10 since USBHostMSD inherits BlockDevice class

Author: jamike

features/unsupported/tests/usb/host/mass_storage/main.cpp

@@ -1,42 +1,68 @@
 #include "mbed.h"
 #include "USBHostMSD.h"
 DigitalOut led(LED1);
-void msd_task(void const *) {
-	printf("init msd\n");
-	USBHostMSD msd("usb");
-	int i = 0;
-	printf("wait for usb memory stick insertion\n");
-	while(1) {
-
-		// try to connect a MSD device
-		while(!msd.connect()) {
-			Thread::wait(500);
-		}
-
-		// in a loop, append a file
-		// if the device is disconnected, we try to connect it again
-
-		// append a file
-		FILE * fp = fopen("/usb/test1.txt", "a");
-
-		if (fp != NULL) {
-			fprintf(fp, "Hello fun SD Card World: %d!\r\n", i++);
-			printf("Goodbye World!\r\n");
-			fclose(fp);
-		} else {
-			printf("FILE == NULL\r\n");
-		}
-		Thread::wait(500);
-		printf("again\n");
-		// if device disconnected, try to connect again
-		while (msd.connected()) {
-			Thread::wait(500);
-		}
-	}
+#include "FATFileSystem.h"
+#include <stdlib.h>
+
+
+void msd_task(void const *)
+{
+
+    USBHostMSD msd;
+    int i = 0;
+    FATFileSystem fs("usb");
+    int err;
+    printf("wait for usb memory stick insertion\n");
+    while(1) {
+
+        // try to connect a MSD device
+        while(!msd.connect()) {
+            Thread::wait(500);
+        }
+        if (fs.mount(&msd) != 0) {
+            continue;
+        } else {
+            printf("file system mounted\n");
+        }
+
+        if  (!msd.connect()) {
+            continue;
+        }
+
+        // in a loop, append a file
+        // if the device is disconnected, we try to connect it again
+
+        // append a file
+        File file;
+        err = file.open(&fs, "test1.txt", O_WRONLY | O_CREAT |O_APPEND);
+
+        if (err == 0) {
+            char tmp[100];
+            sprintf(tmp,"Hello fun USB stick  World: %d!\r\n", i++);
+            file.write(tmp,strlen(tmp));
+            sprintf(tmp,"Goodbye World!\r\n");
+            file.write(tmp,strlen(tmp));
+            file.close();
+        } else {
+            printf("FILE == NULL\r\n");
+        }
+        Thread::wait(500);
+        printf("again\n");
+        // if device disconnected, try to connect again
+        while (msd.connected()) {
+            Thread::wait(500);
+        }
+        while (fs.unmount() < 0) {
+            Thread::wait(500);
+            printf("unmount\n");
+        }
+    }
 }
 
-int main() {
+int main()
+{
     Thread msdTask(msd_task, NULL, osPriorityNormal, 1024 * 4);
+
     while(1) {
         led=!led;
         Thread::wait(500);