/

Site Navigation

Your Account

Choose Language

How to Load OpenEVSE Firmware (WinAVR)

Written By: Christopher Howell (and 2 other contributors)
  • Comments: 19
  • Favorites: 4
  • Completions: 11

Difficulty

Easy

Steps

5

Time Required

00:05:00 - 00:10:00

Sections

1

Flags

0

Tools

Parts

  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.

    Edit

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

  4. 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.

    Edit

  5. 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.

    Edit

  6. 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.

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

    • 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. 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.

    Edit
Finish Line

11 other people completed this guide.

Author

with 2 other contributors

Christopher Howell

Member since: 07/05/2014

6,737 Reputation

20 Guides authored

13 Comments

You can get a signed version of the USBasp driver from http://www.protostack.com/accessories/us...

Should make things a lot easier.

Daniel - Reply

Correction: the batch file for all newer firmware versions is "flash.bat"

donahuepaul - Reply

The firmware link in the store just points us to the GitHub repo. Where can I find the pre-compiled versions of the firmware?

teslatradeup - Reply

Pre-Compiled versions are located at:

OpenEVSE Github

Default Firmware Loads

https://github.com/OpenEVSE/Default_Firm...

Christopher Howell -

The USBasp that I got had a ribbon cable. Orientation of the cable is tricky - The key on the cable jams into a part on the OpenEVSE board. I had to shave off the key to get things to work. Once I did that, things work great. Even from iOS, writing with the Arduino software.

Ed Hubbell - Reply

Add Comment

View Statistics:

Past 24 Hours: 10

Past 7 Days: 49

Past 30 Days: 261

All Time: 14,571