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Replace Firmware on Gumstix Overo Hardware

Replace the firmware on the Overo® hardware with a customized Linux® distribution.

Before replacing the firmware, install the support package.

After replacing the firmware, you can run a Simulink® model on the Overo hardware.

The following overview summarizes the firmware replacement process:

  1. Support Package Installer locates a firmware image on your host computer or downloads new one.

  2. Support Package Installer uses the host computer, not the Overo hardware, to write the firmware image to a microSD card.

  3. You transfer the microSD card to the Overo hardware.

  4. Support Package Installer configures the Overo hardware.

To replace the firmware on your Overo hardware:

  1. Open the Update firmware screen in Support Package Installer using one of the following methods:

    • Click Continue in the Install/update complete screen of Support Package Installer.

    • In a model, select Tools > Run on Target Hardware > Update firmware.

    • In a MATLAB® Command Window, enter targetupdater.

  2. Choose the Gumstix Overo option, and click Next.

  3. Select the Overo board you are using, and click Next.

  4. Make the connections shown in the following figure, and click Next.

  5. Leave Download from Internet (recommended) selected and click Download. The length of time required to download the firmware depends on the speed of your connection.

    If the correct firmware image is already present in the Download folder, the Support Package Installer automatically skips re-downloading the firmware image.

    The file size of the firmware image is approximately 1 GB. The length of time required to download the firmware depends on the speed of your connection.

  6. Insert the microSD card into a media card reader connected to your host computer. Windows® assigns a drive letter to the memory card.

  7. Click Refresh and select the drive letter of the microSD card:

    • If only one drive letter is available, click Next.

    • If multiple drive letters are available, open the Windows Start menu, choose Computer, and look under Devices with Removable Storage to identify the letter Windows assigned to the microSD card.

  8. Click Write. Support Package Installer overwrites all previous data on the memory card with the firmware. This process takes several minutes to complete.

  9. In Microsoft® Windows, open the Devices and Printers, and locate the Overo hardware device.

  10. Get the COM port number from the Hardware tab of the Overo hardware device.

  11. Set Serial port to the COM port number of the Overo hardware, and click Next.

    If you just connected the Overo hardware using the USB cable, click Refresh to update the list of options.

  12. Insert the microSD card into the Overo hardware. Then, connect the board to a 5 volt power supply, and click Next.

  13. Review the automatically generated value of Board name.

    If your board is connected to a network with DHCP services, such as a Local Area Network (LAN) or a home network connected to the Internet, select Automatically get IP address, give the board a unique name, and click Configure. DHCP is a network service that automatically configures the IP settings of Ethernet devices connected to a network.

    If your board has a direct connection to the host computer, or is connected to an isolated network hub, select Manually enter IP address, give the board a unique name, enter static IP settings for the board, and click Configure.

      Tip   Guidelines for entering static IP settings:

      • The IP address must be unique for each device on the network.

      • The Network mask must be the same for all devices on the network. This value is also known as Subnet mask.

      • The Default gateway is usually the same for all devices on the network.

      Start by entering ipconfig on the command line of your host computer. This command displays network settings of the Ethernet adapters on the host computer. Look for the settings of the Ethernet adapter that is connected to the target hardware.

      Suppose that the Ethernet adapter connected to the target hardware has the following values:

         IPv4 Address. . . . . . . . . . . : 192.168.1.2
         Subnet Mask . . . . . . . . . . . : 255.255.255.0
         Default Gateway . . . . . . . . . : 192.168.1.1
      

      In that case, for the target hardware:

      • Set IP address to an unused IP address, between 192.168.1.3 and 192.168.1.254

      • Set Network mask to use the same network mask value, 255.255.255.0

    When you click Configure, Support Package Installer opens a serial connection and applies the settings to the board.

  14. Make a note of the IP address, User name, and Password for use later on. Then, click Next.

    Some Overo COMs have a built-in Wi-Fi module. To configure these wireless settings, see http://wiki.gumstix.org/index.php?title=Overo_Wifi.

    For advanced diagnostics, or to recover the IP address via a serial console, see:

  15. Click Finish. If you leave Show support package examples enabled, Support Package Installer opens the example page for Overo hardware.

    To reopen these examples later on, see Open Examples for This Support Package.

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