Domotique/WiFiAccessPointConfigurator/WiFiAccessPointConfigurator.ino

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/* Generic GPIO Control by HTTP REST interface */
/* Modify GPIO by accessing DEVICE_IP/gpio?gpio=[GPIO]&value=[0|1] */
/* At first boot it creates a WiFi access point */
/* and provide a web server on it, so you can configure Wifi ssid */
/* Wifi passwd, and a mDNS hostname */
/* In this mode, device will be available at 192.168.4.1 */
/* Device can also be put in OTA Mode: In this case, if you have */
/* a little flash (512K), it better to disable SPIFFS in */
/* "Flash Size" Menu. Use espota.py to upload OTA */
/* After passing in OTA mode, next boot will be in setup mode */
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/* To Use GPIO 3 And 1, uncomment #define ENABLE_EXTRA_GPIO */
/* but Serial will be available on GPIO 15 and 13 */
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#include <ESP8266WiFi.h>
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#include <WiFiClient.h>
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#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <EEPROM.h>
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#include <ArduinoOTA.h>
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#include <errno.h>
//#define ENABLE_EXTRA_GPIO
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#define EEPROM_SIZE 512
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char eeprom[EEPROM_SIZE];
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#define BOOTMODE_SETUP 0
#define BOOTMODE_NORMAL 1
#define BOOTMODE_OTA 2
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int mode;
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/* Set these to your desired credentials. */
const char *ssid = "ESPConfigurator";
ESP8266WebServer server(80);
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/* WebServer decl*/
void handleRoot();
void handleSetup();
void handleGpio();
void handleSave();
void handleOTA();
void handleNotFound();
void setupWebServer(int bootmode);
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/* EEPROM decl */
int saveConfig(int bootMode, String ssid, String password, String host );
int saveBootMode(int bootMode);
void readEEPROM(int &bootMode, char **ssid, char **password, char **host);
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void setupWifi(int bootmode, int forceSetup, char *confSsid, char *confPassword, char *confHost) {
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IPAddress myIP;
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if (bootmode == BOOTMODE_SETUP || forceSetup) {
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Serial.println("Configuring access point...");
/* You can set a password to the AP here */
WiFi.softAP(ssid);
myIP = WiFi.softAPIP();
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} else {
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Serial.println("Connecting to Wifi...");
WiFi.begin(confSsid, confPassword);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
if (!MDNS.begin(confHost)) {
Serial.println("Error setting up MDNS responder!");
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while (1) {
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delay(1000);
}
}
Serial.println("mDNS responder started");
myIP = WiFi.localIP();
}
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Serial.print("My IP address: ");
Serial.println(myIP);
}
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void setupOTA() {
// Port defaults to 8266
// ArduinoOTA.setPort(8266);
// Hostname defaults to esp8266-[ChipID]
// ArduinoOTA.setHostname("myesp8266");
// No authentication by default
// ArduinoOTA.setPassword((const char *)"123");
//Disable OTA mode to avoid forever loop
//Force BOOTMODE_SETUP in case eeprom layout have changed
saveConfig(BOOTMODE_SETUP, "", "", "" );
ArduinoOTA.onStart([]() {
Serial.println("Start");
});
ArduinoOTA.onEnd([]() {
Serial.println("\nEnd");
});
ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
});
ArduinoOTA.onError([](ota_error_t error) {
Serial.printf("Error[%u]: ", error);
if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed");
else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed");
else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed");
else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed");
else if (error == OTA_END_ERROR) Serial.println("End Failed");
});
ArduinoOTA.begin();
Serial.println("Ready");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
Serial.print("Free Space: ");
Serial.println(ESP.getFreeSketchSpace());
}
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void setup() {
pinMode(3, OUTPUT);
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char *confSsid;
char *confPassword;
char *confHost;
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delay(1000);
Serial.begin(115200);
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Serial.println();
// Get GPIO 3 Status
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Serial.swap(); //Switch Serial on GPIO 13 & 15
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pinMode(3, INPUT_PULLUP);
int txStatus = digitalRead(3);
#ifndef ENABLE_EXTRA_GPIO
Serial.swap(); // Switch back on GPIO 1 & 3
#endif
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EEPROM.begin(EEPROM_SIZE);
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readEEPROM(mode, &confSsid, &confPassword, &confHost);
if (mode == BOOTMODE_NORMAL || mode == BOOTMODE_OTA) {
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Serial.println("Configuration Found !:");
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Serial.println(mode);
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Serial.println(confSsid);
Serial.println(confPassword);
Serial.println(confHost);
Serial.println();
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} else {
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Serial.println("No configuration saved");
}
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Serial.print("Force Setup Mode ? :");
Serial.print(txStatus?"No":"Yes");
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Serial.println();
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setupWifi(mode, txStatus == 0, confSsid, confPassword, confHost);
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if (mode == BOOTMODE_OTA) {
setupOTA();
} else {
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setupWebServer(mode);
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}
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}
void loop() {
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if (mode == BOOTMODE_OTA) {
ArduinoOTA.handle();
} else {
server.handleClient();
}
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}