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paritometre_sketch.ino
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paritometre_sketch.ino
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/*
* Code pour puce ESP8266
* - Connexion à un réseau Wi-Fi domestique
* - LED stable: pas de problème, clignotante: en attente, SOS: aïe
* - deep sleep pour économiser l'énergie
*
*/
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <Servo.h>
#include <Task.h>
extern "C" {
#include "user_interface.h"
}
#define DEFAULT_SLEEPING_TIME 28 * 1000000
TaskManager taskManager;
struct SleepState {
uint8_t persistentCount;
uint8_t persistentServoPosition;
};
SleepState state;
// nos codes pour le wi-fi
const char* ssid = "YOUR-SSID";
const char* password = "YOUR-PASSWORD";
// backup wi-fi
const char* ssidb = "YOUR-BACKUP-SSID";
const char* passwordb = "YOUR-BACKUP-PASSWORD";
// notre broker MQTT
const char* mqtt_server = "YOUR-BROKER";
// LED externe et servomoteur
int ledPin = 13;
Servo myservo;
// wifi
WiFiClient espClient;
PubSubClient client(espClient);
// on compte les tentatives pour eviter un blocage dans une boucle
int WiFiattempts = 0;
int MQTTattempts = 0;
int suscriptionAttempts = 0;
void lightenLED(float seconds){
digitalWrite(ledPin, HIGH);
delay(500 * seconds);
digitalWrite(ledPin, LOW);
delay(250);
}
void sendSOS() {
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(500);
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(1000);
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(500);
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(500);
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(1000);
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(500);
}
void setup_wifi() {
digitalWrite(ledPin, HIGH);
delay(100);
Serial.print("On se connecte a ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
delay(250);
Serial.print(".");
WiFiattempts += 1;
if( WiFiattempts == 45 ){
sendSOS();
Serial.println("backup wifi");
WiFi.begin(ssidb, passwordb);
}
if( WiFiattempts > 60 ){
sendSOS();
taskManager.EnterSleep(DEFAULT_SLEEPING_TIME, &state, sizeof(state));
}
}
randomSeed(micros());
Serial.println("");
Serial.println("Connexion WiFi etablie");
Serial.println("Addresse IP: ");
Serial.println(WiFi.localIP());
}
// s'execute quand on recoit une commande
void callback(char* topic, byte* payload, unsigned int length)
{
Serial.print("Commande du broker: ");
digitalWrite(ledPin, LOW);
int targetPos;
for(int i=0;i<length;i++)
{
// Serial.println(payload[i]);
if((int)payload[i]>194||(int)payload[i]<0)
break;
Serial.print((int)payload[i]);
Serial.println();
// On bouge le servo progressivement
// en utilisant d'abord servo.read()
int currentPos = myservo.read();
targetPos = (int)payload[i];
int pos;
Serial.print("Current pos = ");
Serial.print((int) currentPos);
Serial.println();
if (currentPos == targetPos){
Serial.println("Same pos.");
} else if (currentPos < (int)payload[i]) {
for (pos = currentPos; pos <= targetPos; pos += 1) {
myservo.write(pos);
Serial.println((int) pos);
delay(150);
}
} else {
for (pos = currentPos; pos >= targetPos; pos -= 1) {
myservo.write(pos);
Serial.println((int) pos);
delay(150);
}
}
break;
}
digitalWrite(ledPin, HIGH);
delay(250);
digitalWrite(ledPin, LOW);
delay(250);
digitalWrite(ledPin, HIGH);
Serial.println("Execution correcte, retour compteur a zero");
state.persistentCount = 0;
state.persistentServoPosition = targetPos;
// on dort
Serial.println("Je pars en deep sommeil");
taskManager.EnterSleep(DEFAULT_SLEEPING_TIME, &state, sizeof(state));
}//end callback
void reconnect() {
// Loop until we're reconnected
while (!client.connected())
{
Serial.print("Connection MQTT...");
// ID random
String clientId = "YOUR-TOPIC";
clientId += String(random(0xffff), HEX);
// On tente la connexion
// NB Ajout mdp?
// if (client.connect(clientId.c_str(), "bieg-client", "r4reLo0phOle")) {
if (client.connect(clientId.c_str()))
{
Serial.println("Connexion faite");
// Souscription à la commande
client.subscribe("YOUR-TOPIC");
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println("nouvel essai dans 5 sec");
suscriptionAttempts += 1;
// On s'arrete apres deux essais (ca repartira de zero)
if(suscriptionAttempts > 2){
Serial.println("Deep sleep apres deux suscriptionAttempts ratees");
taskManager.EnterSleep(DEFAULT_SLEEPING_TIME, &state, sizeof(state)); // (25e6); // dodo 25 secondes
}
delay(5000);
}
}
} //end reconnect()
void setup() {
Serial.begin(115200);
if (!taskManager.RestartedFromSleep(static_cast<void*>(&state), sizeof(state))) {
// Premier démarrage
Serial.println("Je dormais pas");
state.persistentCount = 120;
// si pas encore de valeur stockee en memoire
if((state.persistentServoPosition < 10) || (state.persistentServoPosition > 180)){
state.persistentServoPosition = 50;
}
}
pinMode(ledPin, OUTPUT);
myservo.write(state.persistentServoPosition);
myservo.attach(2); // NodeMCU: GIO2 = D4
Serial.println("");
Serial.print("Decompte en memoire: ");
Serial.println(state.persistentCount);
Serial.print("Position servo en memoire: ");
Serial.println(state.persistentServoPosition);
// 1 declenchement par heure
// 1h = 3600 secondes
// lancer au 120e declenchement
if(state.persistentCount < 2){
Serial.println("Moins de 120 -> stand by");
state.persistentCount++;
delay(2000); // pour flasher plus facilement - sinon deconnecter les pins RST et D0
taskManager.EnterSleep(DEFAULT_SLEEPING_TIME, &state, sizeof(state)); // 60 seconds
}else{
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
}
}
void loop() {
if (!client.connected()) {
MQTTattempts += 1;
if (MQTTattempts > 5) {
// on arrete la boucle: deep sleep
Serial.println("Deep sleep apres cinq MQTTattempts");
taskManager.EnterSleep(DEFAULT_SLEEPING_TIME, &state, sizeof(state)); // (25e6); // 60e6
}
reconnect();
}
client.loop();
}