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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. Using this guide. https://rayshobby.net/dead-simple-driver...

Download Windows Driver for the OpenEVSE Programmer. Using this guide. https://rayshobby.net/dead-simple-driver...

Step 3 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 4 Connect OpenEVSE to programmer

Connect Programmer to OpenEVSE then connect to USB port on PC.

The red stripe on the ribbon cable or 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 red stripe on the ribbon cable or yellow wire on the 6 pin connector aligns with pin 1 of the ISP connector.

Step 5 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.
Download the latest firmware and save files into a local folder.
If the ATMEGA328P chip has never had firmware loaded fuse bit must be set with the following command: avrdude -c USBasp -p m328p -U lfuse:w:0xFF:m -U hfuse:w:0xDF:m -U efuse:w:0x05:m
To upgrade firmware, run the following command at a terminal or command prompt. avrdude -c USBasp -p m328p -U flash:w:file_name_of the_firmware.hex
Warning can not set SCK period is normal and can be ignored.