2.1 Connecting to a host computer

A set of files that are stored on an SD card on the board determines the configuration of the V2M-Juno motherboard. The SD card can be accessed using a USB-B socket on the rear panel of the board. When connected to a host computer, the SD card appears as a USB mass storage device with a FAT16 filesystem. The files in the filesystem are edited to control the configuration of the V2M-Juno motherboard.

Follow these steps:
  1. Connect a serial terminal to the top 9-pin UART0 connector on the rear panel.
  2. Connect a USB cable between the USB-B connector on the rear panel and a USB port of your host computer.
  3. Connect the 12 volt power supply to the V2M-Juno motherboard.
    The serial terminal shows the command prompt Cmd>.

    Note

    If the command prompt is not shown, ensure that both configuration switches are in the top position. Also reset the V2M-Juno motherboard using the hardware reset button. The hardware reset button is on the rear panel.
  4. At the Cmd> prompt on the serial terminal, issue the command usb_on.
    Cmd> usb_on
    The configuration SD card is now visible on the host computer as a mass storage device.
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