Domotique/WifiControlSensor/WifiControlSensor.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 */
/* To Use GPIO 3 And 1, uncomment #define ENABLE_EXTRA_GPIO */
/* but Serial will be available on GPIO 15 and 13 */
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <EEPROM.h>
#include <ArduinoOTA.h>
#include <errno.h>
#include <SFE_BMP180.h>
#include <Wire.h>
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#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
//#define ENABLE_EXTRA_GPIO
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#define EEPROM_SIZE 512
char eeprom[EEPROM_SIZE];
#define WEB_DELAY_MS 100
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#define SAMPLING_PERIODE_MS 60000
/* I2C pin used*/
#define SDA 2
#define SCL 14
#define BOOTMODE_SETUP 0
#define BOOTMODE_NORMAL 1
#define BOOTMODE_OTA 2
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double temp, pressure;
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uint8_t mode;
/* Set these to your desired credentials. */
const char *ssid = "ESPConfigurator";
ESP8266WebServer server(80);
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SFE_BMP180 bmp180;
/* WebServer decl*/
void handleRoot();
void handleSetup();
void handleGpio();
void handleSave();
void handleOTA();
void handleNotFound();
void setupWebServer(int bootmode);
/* EEPROM decl */
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int saveConfig(uint8_t bootMode, String ssid, String password, String host, String mqttServer, String mqttUser, String mqttpasswd, int mqttPort);
int saveBootMode(uint8_t bootMode);
void readEEPROM(uint8_t &bootMode, char **ssid, char **password, char **host, char **mqttServer, char **mqttUser, char **mqttPasswd, int &mqttPort);
/* BMP180 decl */
int getTemperature(double &t);
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int getTempAndPressure(double &t, double &p);
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/* MQTT decl */
int MQTT_connect();
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int MQTT_isConnected();
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int setupMQTT(char *server, char *user, char *passwd, int port);
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int publishMQTT(double temp, double pressure);
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void setupWifi(int bootmode, int forceSetup, char *confSsid, char *confPassword, char *confHost) {
IPAddress myIP;
if (bootmode == BOOTMODE_SETUP || forceSetup) {
Serial.println("Configuring access point...");
/* You can set a password to the AP here */
WiFi.softAP(ssid);
myIP = WiFi.softAPIP();
} else {
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!");
while (1) {
delay(1000);
}
}
Serial.println("mDNS responder started");
myIP = WiFi.localIP();
}
Serial.print("My IP address: ");
Serial.println(myIP);
}
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
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saveBootMode(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());
}
void setup() {
pinMode(3, OUTPUT);
char *confSsid;
char *confPassword;
char *confHost;
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char *mqttServer;
char *mqttUser;
char *mqttPasswd;
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int mqttPort;
delay(1000);
Serial.begin(115200);
Serial.println();
// Get GPIO 3 Status
Serial.swap(); //Switch Serial on GPIO 13 & 15
pinMode(3, INPUT_PULLUP);
int txStatus = digitalRead(3);
#ifndef ENABLE_EXTRA_GPIO
Serial.swap(); // Switch back on GPIO 1 & 3
#endif
EEPROM.begin(EEPROM_SIZE);
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readEEPROM(mode, &confSsid, &confPassword, &confHost, &mqttServer, &mqttUser, &mqttPasswd, mqttPort);
if (mode == BOOTMODE_NORMAL || mode == BOOTMODE_OTA) {
Serial.println("Configuration Found !:");
Serial.println(mode);
Serial.println(confSsid);
Serial.println(confPassword);
Serial.println(confHost);
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Serial.println(mqttServer);
Serial.println(mqttUser);
Serial.println(mqttPasswd);
Serial.println();
} else {
Serial.println("No configuration saved");
}
Serial.print("Force Setup Mode ? :");
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Serial.print(txStatus ? "No" : "Yes");
Serial.println();
setupWifi(mode, txStatus == 0, confSsid, confPassword, confHost);
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setupMQTT(mqttServer, mqttUser, mqttPasswd, mqttPort);
if (mode == BOOTMODE_OTA) {
setupOTA();
} else {
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if (bmp180.begin(SDA, SCL))
Serial.println("BMP180 init success");
setupWebServer(mode);
}
}
uint nbCycle = 0;
void loop() {
if (mode == BOOTMODE_OTA) {
ArduinoOTA.handle();
} else {
server.handleClient();
delay(WEB_DELAY_MS);
nbCycle++;
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if (nbCycle > SAMPLING_PERIODE_MS / WEB_DELAY_MS) {
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if (getTempAndPressure(temp, pressure) == 0) {
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Serial.print("Current T°C ");
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Serial.print(temp);
Serial.print( " Pressure mB ");
Serial.println(pressure);
publishMQTT(temp, pressure);
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} else {
Serial.println("Cannot get T°C");
}
nbCycle = 0;
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}
}
}