2.1. Connecting to a host computer

The configuration of the V2M-Juno motherboard is determined by a set of files stored on an SD card on the board. 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 this 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 (see Figure 1.2).

  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>.

    If it does not, ensure that both configuration switches are in the top position and reset the V2M-Juno motherboard using the hardware reset button on the rear panel (see Figure 1.2).

  4. At the Cmd> prompt on the serial terminal, issue the command usb_on.

    Cmd> usb_on

    The configuration SD card should now be visible on the host computer as a mass storage device.

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