n-bed testing USB HOST and a Flash disk
Fork of USBHostMSD_HelloWorld by
main.cpp
00001 //n-bed SD card testing 00002 //based on n-bed_USBHostMSD_HelloWorld 00003 00004 #include "mbed.h" 00005 #include "USBHostMSD.h" 00006 00007 DigitalOut led(LED1); 00008 00009 void msd_task(void const *) { 00010 00011 USBHostMSD msd("usb"); 00012 int i = 0; 00013 00014 while(1) { 00015 00016 // try to connect a MSD device 00017 while(!msd.connect()) { 00018 Thread::wait(500); 00019 } 00020 00021 // in a loop, append a file 00022 // if the device is disconnected, we try to connect it again 00023 while(1) { 00024 00025 // append a file 00026 FILE * fp = fopen("/usb/test1.txt", "a"); 00027 00028 if (fp != NULL) { 00029 fprintf(fp, "Hello fun SD Card World: %d!\r\n", i++); 00030 printf("Goodbye World!\r\n"); 00031 fclose(fp); 00032 } else { 00033 printf("FILE == NULL\r\n"); 00034 } 00035 00036 Thread::wait(500); 00037 00038 // if device disconnected, try to connect again 00039 if (!msd.connected()) 00040 break; 00041 } 00042 00043 } 00044 } 00045 00046 00047 int main() { 00048 Thread msdTask(msd_task, NULL, osPriorityNormal, 1024 * 4); 00049 while(1) { 00050 led=!led; 00051 Thread::wait(500); 00052 } 00053 }
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