V-USB: Outputting Data with usbFunctionRead()

I promised to commenter Marek to post an example of using usbFunctionRead() to return larger amounts of data. So building upon the ATtiny85 version we made in last part, let’s add one more command to usbtest.exe:


// [...] Change the buffer size in main():
    char buffer[2048];

// [...] Add the following in the if-else structure in main():

    } else if(strcmp(argv[1], "longout") == 0) {
        nBytes = usb_control_msg(handle, 
            USB_DATA_LONGOUT, 0, 0, (char *)buffer, sizeof(buffer), 5000);
        printf("Received %d bytes: %sn", nBytes, buffer);

Now let’s tell V-USB that we’re implementing usbFunctionRead() and doing transfers of more than 254 bytes in usbconfig.h:
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