heres whole of code
#include <FS.h> //this needs to be first, or it all crashes and burns...
#include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino
#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
#include <ArduinoJson.h> //https://github.com/bblanchon/ArduinoJson
//define your default values here, if there are different values in config.json, they are overwritten.
char mqtt_server[20];
char mqtt_port[6];
char device_name[10];
char mqtt_key[50];
char method_and_time[20];
char feed[50];
char USERNAME[50];
char Username_and_feed[50];
uint16_t Port=1883;
//flag for saving data
bool shouldSaveConfig = false;
//callback notifying us of the need to save config
void saveConfigCallback () {
Serial.println("Should save config......................................................................................");
shouldSaveConfig = true;
}
/*#define AIO_SERVER "cs"
#define AIO_SERVERPORT 12 // use 8883 for SSL
#define AIO_USERNAME "cs"
#define AIO_KEY "cs"*/
//'''''''''''''''''''''''''''''''''''''''''''''''''''''''
//String AIO_SERVER, AIO_SERVERPORT,AIO_USERNAME ,AIO_KEY;
WiFiClient client;
static char buffer[50];
//Adafruit_MQTT_Client mqtt(&client,AIO_SERVER,AIO_SERVERPORT,AIO_USERNAME,AIO_KEY);
//Adafruit_MQTT_Subscribe onoffbutton=Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "fdv");
void MQTT_connect();
//''''''''''''''''''''''''''''''''''''''''''''''''''''''''
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println();
WiFiManager wifiManager;
decide_port();
//clean FS, for testing
//SPIFFS.format();
//read configuration from FS json
Serial.println("mounting FS...");
if (SPIFFS.begin()) {
Serial.println("mounted file system");
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
Serial.println("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("opened config file");
size_t size = configFile.size();
// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial);
if (json.success()) {
Serial.println("\nparsed json");
strcpy(mqtt_server,json["mqtt_server"]);
strcpy(mqtt_port,json["mqtt_port"]);
strcpy(device_name,json["device_name"]);
strcpy(mqtt_key,json["mqtt_key"]);
strcpy( method_and_time,json["method_and_time"]);
strcpy(USERNAME,json["USERNAME"]);
strcpy(feed,json["feed"]);
} else {
Serial.println("failed to load json config");
}
configFile.close();
}
}
} else {
Serial.println("failed to mount FS");
}
//end read
// The extra parameters to be configured (can be either global or just in the setup)
// After connecting, parameter.getValue() will get you the configured value
// id/name placeholder/prompt default length
WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 20);
WiFiManagerParameter custom_mqtt_port("port", "mqtt port", mqtt_port, 6);
WiFiManagerParameter custom_device_name("device_name", " device_name", device_name, 10);
WiFiManagerParameter custom_username("username", "username",USERNAME,50);
WiFiManagerParameter custom_feed("feed", "feed",feed,50);
WiFiManagerParameter custom_mqtt_key("mqtt_key", "mqtt_key",mqtt_key,50);
WiFiManagerParameter custom_method_and_time("method_and_time", "method_and_time",method_and_time,20);
//WiFiManager
//Local intialization. Once its business is done, there is no need to keep it around
// WiFiManager wifiManager;
//set config save notify callback
wifiManager.setSaveConfigCallback(saveConfigCallback);
//set static ip
// wifiManager.setSTAStaticIPConfig(IPAddress(10,0,1,99), IPAddress(10,0,1,1), IPAddress(255,255,255,0));
//add all your parameters here
wifiManager.addParameter(&custom_mqtt_server);
wifiManager.addParameter(&custom_mqtt_port);
wifiManager.addParameter(&custom_device_name);
wifiManager.addParameter(&custom_username);
wifiManager.addParameter(&custom_feed);
wifiManager.addParameter(&custom_mqtt_key);
wifiManager.addParameter(&custom_method_and_time);
//reset settings - for testing
//wifiManager.resetSettings();
//set minimu quality of signal so it ignores AP's under that quality
//defaults to 8%
//wifiManager.setMinimumSignalQuality();
//sets timeout until configuration portal gets turned off
//useful to make it all retry or go to sleep
//in seconds
//wifiManager.setTimeout(120);
//fetches ssid and pass and tries to connect
//if it does not connect it starts an access point with the specified name
//here "AutoConnectAP"
//and goes into a blocking loop awaiting configuration
if (!wifiManager.autoConnect("AutoConnectAP", "password")) {
Serial.println("failed to connect and hit timeout");
delay(3000);
//reset and try again, or maybe put it to deep sleep
// ESP.reset();
delay(5000);
}
//if you get here you have connected to the WiFi
Serial.println("connected...yeey :)");
//read updated parameters
strcpy(mqtt_server,custom_mqtt_server.getValue());
strcpy(mqtt_port,custom_mqtt_port.getValue());
strcpy(device_name,custom_device_name.getValue());
strcpy(mqtt_key,custom_mqtt_key.getValue());
strcpy(method_and_time,custom_method_and_time.getValue());
strcpy(USERNAME,custom_username.getValue());
strcpy(feed,custom_feed.getValue());
//save the custom parameters to FS
if (shouldSaveConfig) {
Serial.println("saving config");
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
json["mqtt_server"] = mqtt_server;
json["mqtt_port"] = mqtt_port;
json["device_name"] = device_name;
json["mqtt_key"] = mqtt_key;
json["method_and_time"] = method_and_time;
json["USERNAME"] = USERNAME;
json["feed"] = feed;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
Serial.println("failed to open config file for writing");
}
json.printTo(Serial);
json.printTo(configFile);
configFile.close();
//end save
}
strcpy(Username_and_feed,USERNAME);
strcat(Username_and_feed,feed);
// uint16_t mqtt_port(mqtt_port);
// Adafruit_MQTT_Client mqtt(&client,mqtt_server,mqtt_port,USERNAME,mqtt_key);
// Adafruit_MQTT_Subscribe Light=Adafruit_MQTT_Subscribe(&mqtt,Username_and_feed);
Serial.println("local ip");
Serial.println(WiFi.localIP());
// port(mqtt_port);
decide_port();
}
//uint16_t bb=1883;
Adafruit_MQTT_Client mqtt(&client,mqtt_server,Port,USERNAME,mqtt_key);
Adafruit_MQTT_Subscribe Light=Adafruit_MQTT_Subscribe(&mqtt,Username_and_feed);
uint32_t x=0;