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How to Load OpenEVSE Firmware (WinAVR)

Written By: Christopher Howell (and 2 other contributors)

Comments: 16
Favorites: 4
Completions: 11

Difficulty

Easy

Steps

Time Required

00:05:00 - 00:10:00

Tools

Windows PC

View

Parts

Step 1 How to Load OpenEVSE Firmware

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.

Step 2 Installing Device Driver.

$Download Windows Driver for the OpenEVSE Programmer. Windows Driver. Extract files into a folder of your choice. Example C:\Drivers\AVRISP\$

Windows 8 / 8.1 requires additional steps to disable "Driver Signature Enforcement" follow this Sparkfun Guide. Windows 7 and earlier may continue.

Plug in the OpenEVSE Programmer. Go into Device manager by right clicking on "My Computer" and selecting Manage or through the Control Panel

Download Windows Driver for the OpenEVSE Programmer. Windows Driver. Extract files into a folder of your choice. Example C:\Drivers\AVRISP\
Windows 8 / 8.1 requires additional steps to disable "Driver Signature Enforcement" follow this Sparkfun Guide. Windows 7 and earlier may continue.
Plug in the OpenEVSE Programmer. Go into Device manager by right clicking on "My Computer" and selecting Manage or through the Control Panel
Locate the USBasp programmer. It is likely the unknown USB device. Right click and select "Update Driver Software"
Select "Browse my Computer for driver software". Click Browse and Select the location where you saved the extracted files.

Step 3 Installing Device Driver (Continued)

Depending on your Windows version and settings, you may receive a warning. Select "Install this driver software anyway".

The driver should now be installed and you should receive a window that says Windows has successfully updated the Device Driver.

Depending on your Windows version and settings, you may receive a warning. Select "Install this driver software anyway".
The driver should now be installed and you should receive a window that says Windows has successfully updated the Device Driver.
No device drivers are needed for MacOS and LINUX.

Step 4 Install WinAVR

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.

Step 5 Connect OpenEVSE to programmer

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.

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.

Step 6 Loading firmware

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.
Extract files into a local folder.
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.