- Mon Dec 25, 2017 6:24 am
#72688
Hi.....(sorry about my english)
I am trying to do an wifi themostat with nodemcu, well, I have finished yet, but know I want to improve it....
I have a problem with the code, you use this like char char Channel_ID[11] = ""; //ThingSpeak Channel ID but thingspeak need this code was unsigned long, how did you fixe the convertion problem?
If I only want to put my apiKey on the mobile or tablet screen its not a problem, but with the code I use, if a want to put the channelnumber too, nodemcu gone crash...
I am trying to do an wifi themostat with nodemcu, well, I have finished yet, but know I want to improve it....
I have a problem with the code, you use this like char char Channel_ID[11] = ""; //ThingSpeak Channel ID but thingspeak need this code was unsigned long, how did you fixe the convertion problem?
If I only want to put my apiKey on the mobile or tablet screen its not a problem, but with the code I use, if a want to put the channelnumber too, nodemcu gone crash...
Code: Select all
#include <FS.h>
#include<ESP8266WiFi.h>
#include "ThingSpeak.h"
#include <DHT.h>
#include <WiFiManager.h>
#include <ArduinoJson.h>
#include <ESP8266mDNS.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
//#include <Adafruit_Sensor.h>
#include <WiFiClient.h>
#include <WiFiServer.h>
#define DHTTYPE DHT22
#include <DoubleResetDetector.h>
#include <LiquidCrystal_I2C.h>
#define DRD_TIMEOUT 100
#define DRD_ADDRESS 0
DoubleResetDetector drd(DRD_TIMEOUT, DRD_ADDRESS);
LiquidCrystal_I2C lcd(0x27, 16, 2);
//Thingspeak parametros
const char* serverThingspeak = "api.thingspeak.com";
char myWriteAPIKey[20] = "myWriteAPIKey";
unsigned long myChannelNumber = 266577;
WiFiManagerParameter custom_myWriteAPIKey("API-Key", "myWriteAPIKey", myWriteAPIKey, 20);
//WiFiManagerParameter custom_myChannelNumber("Channel Number", "SmChannelNumber", myChannelNumber, 10);
const int releCaldera = 16;
const int DHTpin = D4;
float histeresis = 1;
static unsigned long last_loop;
unsigned long int anteriorRefreshDatos = 0;
float temp= 0;
float humi= 0;
float tempDeseada = 00;
int calderaHabilitada;
int estadoRele = 0;
int contconexion = 0;
bool shouldSaveConfig = false;
DHT dht(DHTpin, DHTTYPE);
WiFiClient client;
WiFiServer server(80);
void Init_SPIFFS() {
//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(myWriteAPIKey, json["myWriteAPIKey"]);
//strcpy(myChannelNumber, json["myChannelNumber"]);
} else {
Serial.println("failed to load json config");
}
}
}
} 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
}
void InitWiFiManager() {
WiFiManager wifiManager;
WiFi.setAutoConnect(true);
//wifiManager.setSaveConfigCallback(saveConfigCallback);
//wifiManager.setAPCallback(configModeCallback);
wifiManager.addParameter(&custom_myWriteAPIKey);
//wifiManager.addParameter(&custom_myChannelNumber);
wifiManager.setConfigPortalTimeout(320);
wifiManager.setDebugOutput(true);
//reset settings - for testing
//wifiManager.resetSettings();
//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("BeetConfig")) {
delay(3000);
WiFi.softAPdisconnect(true); //AP Ausschalten
//reset and try again, or maybe put it to deep sleep
ESP.reset();
delay(1000);
}
WiFi.softAPdisconnect(true); //AP Ausschalten
}
void Save_CP_Parameter() {
strcpy(myWriteAPIKey, custom_myWriteAPIKey.getValue());
//strcpy(myChannelNumber, custom_myChannelNumber.getValue());
//save the custom parameters to FS
if (shouldSaveConfig) {
Serial.println("saving config");
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
json["myWriteAPIKey"] = myWriteAPIKey;
json["myChannelNumber"] = myChannelNumber;
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
}
}
void setup() {
lcd.clear();
lcd.begin(16,2);
lcd.init();
lcd.backlight();
dht.begin();
delay(10);
Serial.begin(115200);
Init_SPIFFS();
InitWiFiManager();
Save_CP_Parameter();
pinMode(releCaldera, OUTPUT);
digitalWrite(releCaldera, LOW);
pinMode(LED_BUILTIN, OUTPUT);
Serial.println();
if (drd.detectDoubleReset()) {
Serial.println("Doble reset detectado");
lcd.clear();
lcd.setCursor(0,0);
lcd.print("INTRODUCIR");
lcd.setCursor(0,1);
lcd.print("USUARIO Y PASS");
digitalWrite(LED_BUILTIN, LOW);
delay(1000);
} else {
Serial.println("No se ha detectado doble reset");
digitalWrite(LED_BUILTIN, LOW);
}
pinMode(releCaldera, OUTPUT);
digitalWrite(releCaldera, LOW);
IPAddress _ip = IPAddress(192, 168, 1, 10);
IPAddress _gw = IPAddress(192, 168, 1, 1);
IPAddress _sn = IPAddress(255, 255, 255, 0);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("CONECTANDO...");
delay(2000);
Serial.println("Conectado a la red WIFI :)");
Serial.println("local ip");
Serial.println(WiFi.localIP());
// Start the server
ThingSpeak.begin(client);
Serial.println("Cliente thingspeak iniciado");
server.begin();
Serial.println("Server iniciado");
delay(10000);
}
void refreshDatos(){
if (millis() > anteriorRefreshDatos + 20000){
anteriorRefreshDatos = millis();
float temp = dht.readTemperature();
float humi = dht.readHumidity();
if (isnan(temp) || isnan(humi)){
Serial.println("Fallo en lectura de temperatura y humedad");
return;}
if (calderaHabilitada = 1){
if (temp + histeresis >= tempDeseada && temp > 0) digitalWrite(releCaldera, LOW);
else if (temp < tempDeseada && temp > 0) digitalWrite(releCaldera, HIGH);
else digitalWrite(releCaldera, LOW);
}
Serial.println();
Serial.println("Leyendo datos....");
Serial.print("Temperatura deseada: ");
Serial.println(tempDeseada);
Serial.print("Temperatura: ");
Serial.println(temp);
Serial.print("Humedad: ");
Serial.println(humi);
lcd.setCursor(0,0);
lcd.print("Temp: ");
lcd.print(temp);
lcd.print(" ");
lcd.print((char)223);
lcd.print("C");
lcd.setCursor(0,1);
lcd.print("Hum: ");
lcd.print(humi);
lcd.print(" %");
int estadoRele = digitalRead(releCaldera);
if (estadoRele == LOW)
{
Serial.print("Estado relé caldera: ");
Serial.println("LOW");
lcd.setCursor(15,0);
lcd.print(" ");
} else {
Serial.print("Estado relé caldera: ");
Serial.println("HIGH");
lcd.setCursor(15,0);
lcd.print("C");
}
// Start the server
ThingSpeak.begin(client);
Serial.println("Cliente thingspeak iniciado");
server.begin();
Serial.println("Server iniciado");
delay(10000);
ThingSpeak.setField(1, temp);
ThingSpeak.setField(2, humi);
ThingSpeak.setField(3, estadoRele);
ThingSpeak.setField(4, tempDeseada);
ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
//ThingSpeak.writeFields(String(myChannelNumber).toInt(), myWriteAPIKey);
delay(15000);
Serial.println(myChannelNumber);
Serial.println(myWriteAPIKey);
Serial.println("Enviando datos...");
Serial.println();
}
}
void loop() {
refreshDatos();
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
int val;
if (req.indexOf("/tempDeseada21") != -1){
tempDeseada = 21;
val = 1;
} else if (req.indexOf("/tempDeseada22") != -1){
tempDeseada = 22;
val = 1;
} else if (req.indexOf("/tempDeseada23") != -1){
tempDeseada = 23;
val = 1;
} else if (req.indexOf("/tempDeseada24") != -1){
tempDeseada = 24;
val = 1;
} else if (req.indexOf("/tempDeseada25") != -1){
tempDeseada = 25;
val = 1;
} else if (req.indexOf("/tempDeseada26") != -1){
tempDeseada = 26;
val = 1;
} else if (req.indexOf("/tempDeseada00") != -1){
tempDeseada = 00;
val = 0;
} else {
Serial.println("peticion invalida");
client.stop();
return;
}
// Set GPIO2 according to the request
calderaHabilitada = val;
client.flush();
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
s += (val)?"high":"low";
s += "</html>\n";
// Send the response to the client
client.print(s);
delay(1);
client.stop();
Serial.println("Client disonnected");
}
