brainelectronics / myevse-webinterface

Webinterface of MyEVSE

MyEVSE Webinterface

MicroPython based Webinterface of MyEVSE

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General

This is the webinterface of the MyEVSE

The current implementation does only run on a board with external SPI RAM. As of now up to 300kB of RAM are required. This is more than an ESP32-D4 Pico provides by default.

📚 The latest documentation is available at MyEVSE Webinterface ReadTheDocs 📚

• Quickstart
  • Install package on board with mip or upip
  • Upload additional files to board
• Usage

Quickstart

This is a quickstart to install the myevse-webinterface library on a MicroPython board.

A more detailed guide of the development environment can be found in SETUP, further details about the usage can be found in USAGE, descriptions for testing can be found in TESTING and several examples in EXAMPLES

python3 -m venv .venv
source .venv/bin/activate

pip install -r requirements.txt

Install package on board with mip or upip

rshell -p /dev/tty.SLAB_USBtoUART --editor nano

Inside the rshell open a REPL and execute these commands inside the REPL

import machine
import network
import time
import mip
station = network.WLAN(network.STA_IF)
station.active(True)
station.connect('SSID', 'PASSWORD')
time.sleep(1)
print('Device connected to network: {}'.format(station.isconnected()))
mip.install('myevse-webinterface', index='https://pypi.org/pypi')
print('Installation completed')
machine.soft_reset()

For MicroPython versions below 1.19.1 use the upip package instead of mip

import machine
import network
import time
import upip
station = network.WLAN(network.STA_IF)
station.active(True)
station.connect('SSID', 'PASSWORD')
time.sleep(1)
print('Device connected to network: {}'.format(station.isconnected()))
upip.install('myevse-webinterface')
print('Installation completed')
machine.soft_reset()

Upload additional files to board

Copy the boot.py and main.py files to the MicroPython board as shown below using Remote MicroPython shell

Open the remote shell with the following command. Additionally use -b 115200 in case no CP210x is used but a CH34x.

rshell -p /dev/tty.SLAB_USBtoUART --editor nano

Perform the following command to copy all files to the device

cp main.py /pyboard
cp boot.py /pyboard

Usage

See USAGE and DOCUMENTATION

myevse-webinterface's Issues

Do not update client data after start

Updating client data with default host data can lead to errors.

Add public documentation

Documentation should be available on RTD with basic info for every tag

Add simulation

Add simulator for the MyEVSE Webinterface, similar to WiFi Manager. Data shall be either provided by a real MyEVSE or by a static JSON data file

Add custom Modbus file upload

It shall be possible to upload a different or newer Modbus JSON definition file

Set AccessPoint password to UUID of device

Increase security by changing from an open accesspoint to a secured accesspoint.

MyEVSE-Webinterface/myevse_webinterface/webinterface.py

Line 513 in 9cad022

password='',

Use unique AccessPoint name

Relates to brainelectronics/Micropython-ESP-WiFi-Manager#15

In case more than one device uses this lib, it is hard to connect to the desired device as all have the same AccessPoint name.

Create the MyEVSE AccessPoint with a unique name based on the unique ID function of micropython-modules

Add missing favicon

@app.route("/favicon.ico")
def favicon(req, resp):
  yield from app.sendfile(resp, "favicon.ico")

Perform webinterface update calls in background

/setup and /reboot pages open the URL in foreground.

This leads in case of /reboot to a "broken" page as the page /perform_reboot_system is not available as the device reboots directly after the call. Whereas /setup returns to the / index page. Users might have to open the /setup page again to perform other changes.

Solution: Use background calls as in /update

Add spinner for reboot page

Add circular progress bar on /reboot page getting full within 60 seconds.
Add auto redirect to / index page after finishing.

https://www.dottedsquirrel.com/circular-progress-css/

Add main and boot to package

Add the main.py and boot.py files to the setup.py to become part of a distribution

Add log data

Log micropython console text to log file. See bukys log to file

Add main and boot to package

Add the main.py and boot.py files to the setup.py to become part of a distribution

EOF on request start

An EOF on request start is triggered after 5 successfull calls to modbus_data_table

Network analysis shows a wait time of around 400ms, connection establish time of 0 to 200ms and a receive time of 1 to 1.2sec.

At some point in time (after 5 successfull requests and receives) either the receive time increases up to 4 sec or the connection establish time increases to up to 2 sec, leading to a total time of 2 or more seconds.

System config only updated on boot

The system config _config_data gets only loaded once during the init of Webinterface, see

MyEVSE-Webinterface/myevse_webinterface/webinterface.py

Line 84 in 7ab6d2e

self.load_config()

A change of that config is not reflected until a reboot.
Update other properties as well in

MyEVSE-Webinterface/myevse_webinterface/webinterface.py

Line 469 in 7ab6d2e

self.config_data = existing_data

Hide update page on non client mode

The update page shall not be available, neither on the index nor on the URL path, in case of a non client setup (AP, setup)

Add shutdown function

Replace wait_for_irq with shutdown function