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  1. This Guide explains the Firmware loading process for OpenEVSE.
    • This Guide explains the Firmware loading process for OpenEVSE.

    • This guide is specifically intended for the Windows Operating system. Advanced users may use a similar process for MacOS and LINUX.

  2. Download Windows Driver for the OpenEVSE Programmer.  Using this guide. https://rayshobby.net/dead-simple-driver...
  3. Download and install the WinAVR software. WinAVR
    • Download and install the WinAVR software. WinAVR

    • Select BOTH the Install Files and Add Path Options. Developers Notepad is Optional.

  4. Connect Programmer to OpenEVSE then connect to USB port on PC. The yellow wire on the 6 pin connector aligns with pin 1 of the ISP connector. The yellow wire on the 6 pin connector aligns with pin 1 of the ISP connector.
    • Connect Programmer to OpenEVSE then connect to USB port on PC.

    • The yellow wire on the 6 pin connector aligns with pin 1 of the ISP connector.

  5. Download a pre-compiled HEX file from the OpenEVSE Sources for your OpenEVSE product and your desired configuration.
    • Download a pre-compiled HEX file from the OpenEVSE Sources for your OpenEVSE product and your desired configuration.

    • Download the latest firmware and save files into a local folder. You will need 3 files: flash.bat, open_evse.hex and eeprom_24.bin

    • Run the flash.bat file. Programming and verification should take about 60 seconds.

    • If the command window pops up and goes away immediately there is a problem with the Device driver and/or the WinAVR installation.

    • Warning can not set SCK period is normal and can be ignored.

Christopher Howell

Member since: 07/05/2014

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