HTTP server, AJAX API backend and Vue.js web application implementing self-contained, zero-install WiFi remote control of hardware modules attached to the Espressif ESP32 SoC.
Current application is set up for the electronics hardware laboratory, generating a Phase-Shift-PWM waveform between two pairs of hardware pins using the full-featured ESP32 MCPWM module.
This also features auxiliary measurement and control functions:
- Calibrated temperature sensor readout for KTY81-121 type silicon temperature sensors using the ESP32 ADC in its high-linearity region
- PWM reference signal generation for hardware overcurrent detector
- External GPIO output control for relays, fan, enable and error-reset
Stored in on-board flash (SPIFFS/LittleFS), served by an instance of ESPAsyncWebServer and coupled using a fully-async HTTP GET and SSE push API, the web application implements a tabbed-view hardware remote-control user interface designed for either mobile, hardware dashboard or PC.
The web application is designed to serve as a live-feedback, fairly responsive, hardware remote user interface, running in a point-to-point fashion on an isolated network.
The web app is built using Vue.js v3.
User interface widgets are implemented as vue.js single-file-components.
API interface and remote state is implemented in a state store object using the vue composition API in file: vue_app/src/api/useApiStore.js.
WiFi/Network configuration is done using a dedicated WiFiConfigurator application component, designed for to be as-well suited for permanent access-point mode as for joining an existing network.
WiFi credentials are stored in NVS storage separate from application, but NVS/flash encryption is OFF.
SSL is (currently) /not/ implemented for the web server or application.
