Wifi connection and configuration manager for ESP8266 and ESP32.

This library was made to ease the complication of configuring Wifi and other settings on an ESP8266 or ESP32. It is roughly split into two parts, Wifi configuration and REST variable configuration.

Requires

• ArduinoJson

Quick Start

Installing

You can install through the Arduino Library Manager. The package name is ConfigManager.

Usage

Include the library in your sketch

#include <ConfigManager.h>

Initialize a global instance of the library

ConfigManager configManager;

In your setup function start the manager

configManager.setAPName("Demo");
configManager.setAPFilename("/index.html");
configManager.addParameter("name", config.name, 20);
configManager.addParameter("enabled", &config.enabled);
configManager.addParameter("hour", &config.hour);
configManager.addParameter("password", config.password, 20, set);
configManager.addParameter("version", &meta.version, get);
configManager.begin(config);

In your loop function, run the manager loop

configManager.loop();

Upload the index.html file found in the data directory into the SPIFFS. Instructions on how to do this vary based on your IDE. Below are links instructions on the most common IDEs:

ESP8266

• Arduino IDE

• Platform IO

ESP32

• Arduino IDE

• Platform IO

Documentation

Methods

getMode

Mode getMode()

Gets the current mode, ap or api.

setAPName

void setAPName(const char *name)

Sets the name used for the access point.

setAPPassword

void setAPPassword(const char *password)

Sets the password used for the access point. For WPA2-PSK network it should be at least 8 character long. If not specified, the access point will be open for anybody to connect to.

setAPFilename

void setAPFilename(const char *filename)

Sets the path in SPIFFS to the webpage to be served by the access point.

setAPTimeout

void setAPTimeout(const int timeout)

Sets the access point timeout, in seconds (default 0, no timeout).

Note: The timeout starts when the access point is started, but is evaluated in the loop function.

setAPCallback

void setAPCallback(std::function<void(WebServer*)> callback)

Sets a callback allowing customized http endpoints to be set when the access point is setup.

setAPICallback

void setAPICallback(std::function<void(WebServer*)> callback)

Sets a callback allowing customized http endpoints to be set when the api is setup.

setWifiConnectRetries

void setWifiConnectRetries(const int retries)

Sets the number of Wifi connection retires. Defaults to 20.

setWifiConnectInterval

void setWifiConnectInterval(const int interval)

Sets the interval (in milliseconds) between Wifi connection retries. Defaults to 500ms.

addParameter

template<typename T>
void addParameter(const char *name, T *variable)

or

template<typename T>
void addParameter(const char *name, T *variable, ParameterMode mode)

Adds a parameter to the REST interface. The optional mode can be set to set or get to make the parameter read or write only (defaults to both).

addParameter (string)

void addParameter(const char *name, char *variable, size_t size)

or

void addParameter(const char *name, char *variable, size_t size, ParameterMode mode)

Adds a character array parameter to the REST interface.The optional mode can be set to set or get to make the parameter read or write only (defaults to both).

begin

template<typename T>
void begin(T &config)

Starts the configuration manager. The config parameter will be saved into and retrieved from the EEPROM.

save

void save()

Saves the config passed to the begin function to the EEPROM.

loop

void loop()

Handles any waiting REST requests.

Endpoints

GET /

Gets the HTML page that is used to set the Wifi SSID and password.

• Response 200 (text/html)

POST /

Sets the Wifi SSID and password. The form example can be found in the data directory.

• Request (application/x-www-form-urlencoded)

ssid=access point&password=some password

• Request (application/json)

{
  "ssid": "access point",
  "password": "some password"
}

GET /settings

Gets the settings set in addParameter.

• Response 200 (application/json)

{
  "enabled": true,
  "hour": 3
}

PUT /settings

Sets the settings set in addParameter.

• Request (application/json)

{
  "enabled": false,
  "hour": 4
}

• Response 400 (application/json)

• Response 204 (application/json)