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https://github.com/OpenEVSE/open_evse

Firmware for Open EVSE
https://github.com/OpenEVSE/open_evse

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Firmware for Open EVSE

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README 

        
# OpenEVSE



Firmware for OpenEVSE controller used in OpenEVSE Charging Stations sold in the USA, and OpenEnergyMonitor EmonEVSE units sold in (UK/EU).



- OpenEVSE: 

- EmonEVSE: 



Based on OpenEVSE: Open Source Hardware J1772 Electric Vehicle Supply Equipment



## USA



TODO: add notes about USA OpenEVSE



## UK/EU



- Disable `AUTOSVCLEVEL` (autodetection is designed for split-phase)

- Charging level default to `L2`

- Set `MAX_CURRENT_CAPACITY_L2 32` (limit for single-phase charging in UK/EU)

- Add '.EU' to version number

- Enable LCD Redraw every couple of min (required for EMC/CE)



### EmonEVSE



EmonEVSE (non-tethered type-2 EVSE unit)



- `PP_AUTO_AMPACITY` enabled to set max current based on non-tethered cable connected

- Three-phase option with `THREEPHASE` enabled to calculate three-phase energy ( Unneeded with ESP32_WiFi firmware >= 4.2



## API Documentation



- WIFI API: 

- RAPI API: 



## Resources



- [OpenEnergyMonitor OpenEVSE Setup Guide](https://guide.openenergymonitor.org/integrations/openevse)

- [OpenEnergyMonitor OpenEVSE Shop](https://shop.openenergymonitor.com/ev-charging/)



- [OpenEVSE Controller Datasheet](https://github.com/OpenEVSE/OpenEVSE_PLUS/blob/master/OpenEVSE_PLUS_v5/OpenEVSE_Plus_v5.pdf)

- [OpenEVSE Controller Hardware Repo](https://github.com/OpenEVSE/OpenEVSE_PLUS)

- [OpenEVSE Project Homepage](https://openevse.com)



***



Firmware compile & upload help: [firmware/open_evse/LoadingFirmware.md](firmware/open_evse/LoadingFirmware.md)



NOTES:



- Working versions of the required libraries are included with the firmware code. This avoids potential issues related to using the wrong versions of the libraries.

- Highly recommend using the tested pre-compiled firmware (see releases page)



## Flash pre-compiled using avrdude



`$ avrdude -p atmega328p -B6 -c usbasp -P usb -e -U flash:w:firmware.hex`



ISP programmer required e.g [USBASP](https://www.amazon.co.uk/Hobby-Components-USBASP-Programmer-Adapter/dp/B06XYV162N)



### Set AVR fuses



This only needs to be done once in the factory



`avrdude -c USBasp -p m328p -U lfuse:w:0xFF:m -U hfuse:w:0xDF:m -U efuse:w:0xFD:m -B6`



If writing eFuse fails ISBasp may need a [firmware update](https://www.vishnumaiea.in/articles/electronics/how-to-solve-usbasp-avr-efuse-write-problem-on-progisp)



***



Tip Jar: I developed/maintain this firmware on a volunteer basis. Any donation, no matter how small, is greatly appreciated.



[![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.me/lincomatic)



```text

Open EVSE is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.



Open EVSE is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.



You should have received a copy of the GNU General Public License

along with Open EVSE; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 59 Temple Place - Suite 330,

Boston, MA 02111-1307, USA.



* Open EVSE is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

```