File content as of revision 1:61a53da3a8bc:

// 1:USBHostMouse_HelloWorld
// 2:USBHostKeyboard_HelloWorld
// 3:USBHostMSD_HelloWorld
// 4:USBHostSerial_HelloWorld
// 5:USBHostHub_HelloWorld
#define USB_HOST_TEST     5

#if USB_HOST_TEST == 1
// *******************************************************************
// 1:USBHostMouse_HelloWorld
// *******************************************************************
#include "mbed.h"
#include "USBHostMouse.h"

DigitalOut led(LED1);

void onMouseEvent(uint8_t buttons, int8_t x, int8_t y, int8_t z) {
    printf("buttons: %d, x: %d, y: %d, z: %d\r\n", buttons, x, y, z);
}

void mouse_task(void const *) {

    USBHostMouse mouse;

    while(1) {
        // try to connect a USB mouse
        while(!mouse.connect())
            Thread::wait(500);

        // when connected, attach handler called on mouse event
        mouse.attachEvent(onMouseEvent);

        // wait until the mouse is disconnected
        while(mouse.connected())
            Thread::wait(500);
    }
}

int main() {
    Thread mouseTask(mouse_task, NULL, osPriorityNormal, 256 * 4);
    while(1) {
        led=!led;
        Thread::wait(500);
    }
}

#elif USB_HOST_TEST == 2
// *******************************************************************
// 2:USBHostKeyboard_HelloWorld
// *******************************************************************
#include "mbed.h"
#include "USBHostKeyboard.h"

DigitalOut led(LED1);

void onKey(uint8_t key) {
    printf("Key: %c\r\n", key);
}

void keyboard_task(void const *) {

    USBHostKeyboard keyboard;

    while(1) {
        // try to connect a USB keyboard
        while(!keyboard.connect())
            Thread::wait(500);

        // when connected, attach handler called on keyboard event
        keyboard.attach(onKey);

        // wait until the keyboard is disconnected
        while(keyboard.connected())
            Thread::wait(500);
    }
}

int main() {
    Thread keyboardTask(keyboard_task, NULL, osPriorityNormal, 256 * 4);
    while(1) {
        led=!led;
        Thread::wait(500);
    }
}

#elif USB_HOST_TEST == 3
// *******************************************************************
// 3:USBHostMSD_HelloWorld
// *******************************************************************
#include "mbed.h"
#include "USBHostMSD.h"

DigitalOut led(LED1);

void msd_task(void const *) {
    
    USBHostMSD msd("usb");
    int i = 0;
    
    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
        while(1) {
            
            // append a file
            FILE * fp = fopen("/usb/test1.txt", "a");
        
            if (fp != NULL) {
                fprintf(fp, "Hello fun USB World: %d!\r\n", i++);
                printf("Goodbye World!\r\n");
                fclose(fp);
            } else {
                printf("FILE == NULL\r\n");
            }
            
            Thread::wait(500);
        
            // if device disconnected, try to connect again
            if (!msd.connected())
                break;
        }
            
    }
}


int main() {
    Thread msdTask(msd_task, NULL, osPriorityNormal, 1024 * 4);
    while(1) {
        led=!led;
        Thread::wait(500);
    }
}

#elif USB_HOST_TEST == 4
// *******************************************************************
// 4:USBHostSerial_HelloWorld
// *******************************************************************
#include "mbed.h"
#include "USBHostSerial.h"
 
DigitalOut led(LED1);
Serial pc(USBTX, USBRX);
 
void serial_task(void const*) {
    USBHostSerial serial;

    while(1) {

        // try to connect a serial device
        while(!serial.connect())
            Thread::wait(500);

        serial.baud(9600);
        // in a loop, print all characters received
        // if the device is disconnected, we try to connect it again
        while (1) {
            // print characters received
            while (serial.available()) {
                printf("%c", serial.getc());
            }

            Thread::wait(50);
        }
    }
}
 
int main() {
    Thread serialTask(serial_task, NULL, osPriorityNormal, 256 * 4);
    while(1) {
        led=!led;
        Thread::wait(500);
    }
}
#elif USB_HOST_TEST == 5
// *******************************************************************
// 5:USBHostHub_HelloWorld
// *******************************************************************
#include "mbed.h"
#include "USBHostKeyboard.h"
#include "USBHostMouse.h"
 
DigitalOut led(LED1);
 
void onKey(uint8_t key) {
    printf("Key: %c\r\n", key);
}
 
void onMouseEvent(uint8_t buttons, int8_t x, int8_t y, int8_t z) {
    printf("buttons: %d, x: %d, y: %d, z: %d\r\n", buttons, x, y, z);
}
 
void keyboard_task(void const *) {
    
    USBHostKeyboard keyboard;
    
    while(1) {
        // try to connect a USB keyboard
        while(!keyboard.connect())
            Thread::wait(500);
    
        // when connected, attach handler called on keyboard event
        keyboard.attach(onKey);
        
        // wait until the keyboard is disconnected
        while(keyboard.connected())
            Thread::wait(500);
    }
}
 
void mouse_task(void const *) {
    
    USBHostMouse mouse;
    
    while(1) {
        // try to connect a USB mouse
        while(!mouse.connect())
            Thread::wait(500);
    
        // when connected, attach handler called on mouse event
        mouse.attachEvent(onMouseEvent);
        
        // wait until the mouse is disconnected
        while(mouse.connected())
            Thread::wait(500);
    }
}
 
int main() {
    Thread keyboardTask(keyboard_task, NULL, osPriorityNormal, 256 * 4);
    Thread mouseTask(mouse_task, NULL, osPriorityNormal, 256 * 4);
    while(1) {
        led=!led;
        Thread::wait(500);
    }
}

#endif