I'm finding myself confused by some comments in various discussion threads. For example, in the thread at https://openev.freshdesk.com/support/discussions/topics/6000048386
I see from Chris:
> Yes, version 2.x of the WiFi firmware has many security enhancements.
Is there separate firmware that is the "EVSE firmware" and the "WiFi firmware", or does this just refer to new EVSE firmware that includes support for WiFi?
In the same thread, I also see
> So dont try to upload firmware through the web interface? Or is that for the main controller board?
> Correct. Version 2 requires both firmware and a file system. The web interface will only load the firmware.
This talk of "for the main controller board" makes me think that there are two pieces of firmware. But then the comment about Version 2 (of the WiFi firmware, I presume) requiring both the firmware (requiring itself?) and a file system.
A file system?! Where does this file system reside?
As you can see, I'm plenty confused.
The EVSE controller has firmware that controls the charging station and all safety functions. WiFi has its own firmware that provide the user interface and communications. A charging station will work fine with or without WiFi.
Early builds of 2.0 WiFi firmware had the firmware itself and all the web interface files in a filesystem image. The latest builds have both integrated into a single WiFi firmware image.
The latest firmware for both products come pre-installed. For most users who want to upgrade we have compiled binaries for each in the "Releases" section in Github. WiFi can be flashed over the air by choosing the file in a browser and clicking upgrade. The OpenEVSE firmware release includes a .bat file that will automatically upgrade the firmware. Here is a guide for flashing pre-compiled firmware to OpenEVSE https://openevse.dozuki.com/Guide/How+to+Load+OpenEVSE+Firmware+%28WinAVR%29/7
For developers who wish to build and compile from scratch there are notes in the GITHUB for PlatformIO and Arduino IDEs. Developers are expected to have some basic knowledge of the IDEs.
Official Releases for OpenEVSE Firmware:
Official Releases for OpenEVSE WiFi: