3. Double watermeter on NodeMCU

Double watermeter on NodeMCU

  • marsault6

    Objective of this project is to survey abnormal flowrate on the 2 main usage of water : home and garden (I had last year a abnormal bill of about 400m3 ....).

    Existing installation :

    • Raspberry Pi3
    • Domoticz
    • Livebox ADSL
    • Router Synology RT1900ac
    • Oregon sensor temperature
    • OWL CM180

    I use ESP8266 on a NodeMCU dev kit with MySensors 2.2 librarie
    Power is provided by a standart USB supply

    Watermeter : G. GIOANOLA USLF/20 with reed switch cable 2.5m3/h 1 pulse/liter

    • 2 independants counter for each way, count of total volume (m3) and flowrate (l/mn)
    • reset on board by push button for all counter
    • separate soft reset for each way counters from Domoticz
    • save counters on EEPROM every 5h (in case of long time WiFi lost)
    • switch rebounce corrected by small soft
    • send result by WiFi to Domoticz

    Very simple schema :
    0_1546528520487_schema.jpg

    And also box:
    0_1546528562671_box_pcb.jpg

    and sketch :

    //==============================================================
//                     DOUBLE WATERMETER using WiFi
//
// - Count Volume and Flowrate for 2 physical watermeter by reed switch
// - send values every 1 mn through WiFi
// - possible hard reset of the 2 counters by switch on board
// - possible of soft reset for each counter from Domoticz
// - save values every about each 5h on EEPROM (in case of lost local network)
// - soft treatement about debouncing reed switch
//
// material and soft :
// - watermeter G. GIOANOLA 2.5 m3/h - 1 pulse / liter 
// - ESP8266 on NodeMCU dev kit
// - MySensors 2.20 librarie
// - Domoticz 3.8153
// - Raspberry Pi 3
// - use a static IP in the local network
//
// Objectives :
// Verify leakage and usage for home and garden, send alerte
//
// All constant on this sketch are adapted to a max flowrate of 2.5 m3/h
//
// Philippe Marsault / France 
//==============================================================
//
// References :
//
// MySensors Library
// https://www.mysensors.org/download/sensor_api_20
//
// Article decrivant la transmission EDF Linky Arduino en protocole OWL180
// http://domotique.web2diz.net/teleinfo-edf-arduino-sans-fil-avec-rfxcom/
//
// Présentation de l’ESP8266
// https://www.ekito.fr/people/presentation-de-l-esp8266/
//
// Utilisation de l'EEPROM
// https://www.carnetdumaker.net/articles/stocker-des-donnees-en-memoire-eeprom-avec-une-carte-arduino-genuino/
// Sinon voir fonctions "savestate" et "loadstate" de la bibliothèque Mysensors
// (save et load operent seulement sur 1 byte)
// https://www.mysensors.org/apidocs-beta/group__MySensorsCoregrp.html#ga07bd2de06f11e34fca1fa77621d164ec
//
// NodeMcu v1.0 (ESP8266 12E) store/read a value from EEPROM
// http://www.esp8266.com/viewtopic.php?p=66197
//
// Documentation nodeMCU
// https://nodemcu.readthedocs.io/en/master/
// https://tttapa.github.io/ESP8266/Chap01%20-%20ESP8266.html
//
// Chargement des caractéristiques de carte NodeMCU ESP12E
// https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls
//
// Building a WiFi Gateway using ESP8266
// https://www.mysensors.org/build/esp8266_gateway
// https://projetsdiy.fr/mysensors-version2-decouverte-nouveautes-convertir-sketch/
//
// Driver  Windows 10 du CP210x (port USB de la carte NodeMCU) (pour raccordement au PC)
// https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
//
// Utilisation des PIN avec Interrupt
// http://www.electronicwings.com/nodemcu/nodemcu-gpio-interrupts-with-arduino-ide
// Debouncing switch
// https://www.microcontrollertips.com/debouncing-switches-in-hardware-and-software-faq/
// http://www.ganssle.com/debouncing-pt2.htm
//
// Charger le driver CH340G pour connecter NodeMCU a un PC Win 10
// Installer l'interface de developpement Arduino IDE sur https://www.arduino.cc
// Connecter PC et carte Nodemcu avec un cable micro USB (pour smartphone)
// programmation : appuyer sur la touche FLASH puis sur RESET et relacher FLASH
// 
// Utilisation avec Domoticz
// https://projetsdiy.fr/mysensors-v2-gateway-wifi-esp8266-jeedom-domoticz/#Preparer_le_programme_de_la_Gateway
// Configurer avec une adresse IP fixe (option recommandée)
//
//==============================================================
//
// MYSENSORS librarie
//
/**
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0 - Henrik EKblad
 * Contribution by a-lurker and Anticimex,
 * Contribution by Norbert Truchsess <norbert.truchsess@t-online.de>
 * Contribution by Ivo Pullens (ESP8266 support)
 *
 * DESCRIPTION
 * The EthernetGateway sends data received from sensors to the WiFi link.
 * The gateway also accepts input on ethernet interface, which is then sent out to the radio network.
 *
 * VERA CONFIGURATION:
 * Enter "ip-number:port" in the ip-field of the Arduino GW device. This will temporarily override any serial configuration for the Vera plugin.
 * E.g. If you want to use the defualt values in this sketch enter: 192.168.178.66:5003
 *
 * LED purposes:
 * - To use the feature, uncomment any of the MY_DEFAULT_xx_LED_PINs in your sketch, only the LEDs that is defined is used.
 * - RX (green) - blink fast on radio message recieved. In inclusion mode will blink fast only on presentation recieved
 * - TX (yellow) - blink fast on radio message transmitted. In inclusion mode will blink slowly
 * - ERR (red) - fast blink on error during transmission error or recieve crc error
 *
 * See http://www.mysensors.org/build/esp8266_gateway for wiring instructions.
 * nRF24L01+  ESP8266
 * VCC        VCC
 * CE         GPIO4
 * CSN/CS     GPIO15
 * SCK        GPIO14
 * MISO       GPIO12
 * MOSI       GPIO13
 * GND        GND
 *
 * Not all ESP8266 modules have all pins available on their external interface.
 * This code has been tested on an ESP-12 module.
 * The ESP8266 requires a certain pin configuration to download code, and another one to run code:
 * - Connect REST (reset) via 10K pullup resistor to VCC, and via switch to GND ('reset switch')
 * - Connect GPIO15 via 10K pulldown resistor to GND
 * - Connect CH_PD via 10K resistor to VCC
 * - Connect GPIO2 via 10K resistor to VCC
 * - Connect GPIO0 via 10K resistor to VCC, and via switch to GND ('bootload switch')
 *
  * Inclusion mode button:
 * - Connect GPIO5 via switch to GND ('inclusion switch')
 *
 * Hardware SHA204 signing is currently not supported!
 *
 * Make sure to fill in your ssid and WiFi password below for ssid & pass.
 */

// Enable debug prints to serial monitor
//#define MY_DEBUG

// Use a bit lower baudrate for serial prints on ESP8266 than default in MyConfig.h
#define MY_BAUD_RATE 9600

// Enables and select radio type (if attached)
//#define MY_RADIO_NRF24  --> mise en commentaire : pas de module radio
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95

#define MY_GATEWAY_ESP8266

#define MY_ESP8266_SSID "XXXXXXXXX"
#define MY_ESP8266_PASSWORD "YYYYYYYYYYY"

// Enable UDP communication
//#define MY_USE_UDP  // If using UDP you need to set MY_CONTROLLER_IP_ADDRESS below

// Set the hostname for the WiFi Client. This is the hostname
// it will pass to the DHCP server if not static.
#define MY_ESP8266_HOSTNAME "NodeMCU controleur eau"

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
#define MY_IP_ADDRESS 192,168,2,51

// If using static ip you can define Gateway and Subnet address as well
#define MY_IP_GATEWAY_ADDRESS 192,168,2,1
#define MY_IP_SUBNET_ADDRESS 255,255,255,0

// The port to keep open on node server mode
#define MY_PORT 5003

// How many clients should be able to connect to this gateway (default 1)
// 2 counters and 2 switch for reset
#define MY_GATEWAY_MAX_CLIENTS 4

// Controller ip address. Enables client mode (default is "server" mode).
// Also enable this if MY_USE_UDP is used and you want sensor data sent somewhere.
//#define MY_CONTROLLER_IP_ADDRESS 192, 168, 178, 68

// Enable inclusion mode
//#define MY_INCLUSION_MODE_FEATURE

// Enable Inclusion mode button on gateway
//#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
//#define MY_INCLUSION_MODE_DURATION 60
// Digital pin used for inclusion mode button
//#define MY_INCLUSION_MODE_BUTTON_PIN  3

// Set blinking period for led on the board
#define MY_DEFAULT_LED_BLINK_PERIOD 100

// Flash leds on rx/tx/err
// Led pins used if blinking feature is enabled above
//#define MY_DEFAULT_ERR_LED_PIN 16  // Error led pin
//#define MY_DEFAULT_RX_LED_PIN  16  // Receive led pin
//#define MY_DEFAULT_TX_LED_PIN  16  // the PCB, on board LED

//--------------------------------------------------------------
// Table  PIN / GPIO
// https://github.com/esp8266/Arduino/issues/584
//--------------------------------------------------------------

#define D0 16
#define D1  5 // I2C Bus SCL (clock)
#define D2  4 // I2C Bus SDA (data)
#define D3  0
#define D4  2 // Same as "LED_BUILTIN", but inverted logic
#define D5 14 // SPI Bus SCK (clock)
#define D6 12 // SPI Bus MISO 
#define D7 13 // SPI Bus MOSI
#define D8 15 // SPI Bus SS (CS)
#define D9  3 // RX0 (Serial console)
#define D10 1 // TX0 (Serial console)

//--------------------------------------------------------------
// Call libraries 
//--------------------------------------------------------------

#if defined(MY_USE_UDP)
#include <WiFiUdp.h>
#endif

#include <ESP8266WiFi.h>
#include <MySensors.h>

#include <SPI.h>
#include <SoftwareSerial.h>
#include <EEPROM.h>

//--------------------------------------------------------------
// Declare and initialize MySensors variables
// Volume (m3), flowrate (l/mn) and flowrate (m3/h) for flowmeter 1 and 2
// Binary used to reset counter A ou B
//--------------------------------------------------------------

#define CHILD_ID_A  1                        // Id of the compteur A
#define CHILD_ID_B  2                        // Id of the compteur B
#define CHILD_ID_AR 3                        // Id of the reset compteur A
#define CHILD_ID_BR 4                        // Id of the reset compteur B
MyMessage flowMsg_A(CHILD_ID_A,V_FLOW);     // flowrate (l/mn)
MyMessage flowMsg_m3_A(CHILD_ID_A,V_VAR1);  // flowrate (m3/h)
MyMessage volumeMsg_A(CHILD_ID_A,V_VOLUME); // volume (m3)
MyMessage flowMsg_B(CHILD_ID_B,V_FLOW);     // flowrate (l/mn)
MyMessage flowMsg_m3_B(CHILD_ID_B,V_VAR2);  // flowrate (m3/h)
MyMessage volumeMsg_B(CHILD_ID_B,V_VOLUME); // volume (m3)
MyMessage light_msgA(CHILD_ID_AR, V_STATUS );// Reset watermeter A
MyMessage light_msgB(CHILD_ID_BR, V_STATUS );// Reset watermeter B

//--------------------------------------------------------------
// type of variables
//--------------------------------------------------------------

const long delay_TX_volume = 60000;    // delay (millisecondes) between send to Raspberry (every minutes)
      long ref_time_TX_ms;             // Time reference to compute data transmission delay
const long delay_EEPROM = 18000000;    // delay (millisecondes) between save on EEPROM (every 5h)
                                       // 100.000 cycles -> 57 years
      long ref_time_EP_ms;             // Time reference to compute EEPROM save

const int eeprom_adr_vol_total = 0;    // adress to write in EEPROM

const int pulses_par_litre_A = 1;      // pulses per liter (depending watermeter caracteristics)
const int pulses_par_litre_B = 1;      // pulses per liter (depending watermeter caracteristics)

unsigned long vol_litres_total_A;      // Total volume (liter) (4 octets)
unsigned long vol_litres_total_B;      // Total volume (liter) (4 octets)

// utilisé dans la fonction void comptage ()
unsigned long pulses_compteur_total_A; // nombre d impulsions (4 octets)
unsigned long pulses_compteur_total_B; // nombre d impulsions (4 octets)
unsigned long pulses_compteur_debit_A;
unsigned long pulses_compteur_debit_B;
float litres_precis_A; // variable pour les compteurs à + de 1 impulsion par litre
float litres_precis_B; // variable pour les compteurs à + de 1 impulsion par litre
float volume_m3_A;     // volume total en m3
float volume0_m3_A;    // volume total en m3 pour calcul debit
float volume_m3_B;     // volume total en m3
float volume0_m3_B;    // volume total en m3 pour calcul debit
float flowrate_lmn_A;
float flowrate_lmn_B;
float flowrate_m3h_A;
float flowrate_m3h_B;
float coeff_flowrate;

int val_A;
int val_B;
int val_old_A=HIGH;
int val_old_B=HIGH;

const int PIN_compteur_eau_A = D1;  // broche D1 Input pin number to count water meter pulses 
const int PIN_compteur_eau_B = D2;  // broche D2 Input pin number to count water meter pulses
const int PIN_reset          = D5;  // broche D5 Input pin number to reset water meter pulses A & B
const int PIN_LED_BUILTIN    = D4;  // broche D4 Led on board / inverted logic

void setup() {
//==============================================================
// Fonction appelée lors de la mise sous tension de l'Arduino
//==============================================================

  // INPUT is connected only by switch to GND
  pinMode(PIN_compteur_eau_A,INPUT_PULLUP); // use PIN_compteur_eau as INPUT  
  pinMode(PIN_compteur_eau_B,INPUT_PULLUP); // use PIN_compteur_eau as INPUT
  pinMode(PIN_reset,         INPUT_PULLUP); // use PIN_reset        as INPUT
  // OUTPUT is not connected
  pinMode(PIN_LED_BUILTIN, OUTPUT);  // use PIN link to the blue LED as OUTPUT (for blinking)

// Initialize values
  
  Serial.begin(MY_BAUD_RATE);     // Serial port board <-> PC for debug
  
 /* -----------------------------------------------------------------
   Interrupt is NOT used to avoid switch rebounce count
   small code is implemented to limid rebounce counting in the loop
 ----------------------------------------------------------------- */
  
  // Link between PIN, routine and type of signal for software interrupt
  //attachInterrupt(digitalPinToInterrupt(PIN_compteur_eau_A),count_pulses_A, FALLING); 
  //attachInterrupt(digitalPinToInterrupt(PIN_compteur_eau_B),count_pulses_B, FALLING);
  //attachInterrupt(digitalPinToInterrupt(PIN_reset)         ,reset_count_AB, FALLING); 

  reset_count_A();
  reset_count_B();

  Serial.println();
  Serial.println("== Compteur Eau v1.00 =="); 
  
  // Restore volume values from EEPROM when module restart (power On)
  Serial.println("== EEPROM =="); 
  EEPROM.begin(32); // max size needed for storage
  EEPROM.get(eeprom_adr_vol_total   , vol_litres_total_A     );
  EEPROM.get(eeprom_adr_vol_total+4 , pulses_compteur_total_A);
  EEPROM.get(eeprom_adr_vol_total+8 , vol_litres_total_B     );
  EEPROM.get(eeprom_adr_vol_total+12, pulses_compteur_total_B);
  
  // Display volume to terminal PC (port USB emulation COM) 
  Serial.print("Volume A : ");
  Serial.print(vol_litres_total_A);
  Serial.print(" -- Volume B : ");
  Serial.println(vol_litres_total_B);

  // Initialisation des volumes pour calcul du debit en entree de boucle
  litres_precis_A = float(vol_litres_total_A);
  litres_precis_B = float(vol_litres_total_B);
  volume_m3_A = litres_precis_A*0.001;
  volume_m3_B = litres_precis_B*0.001;
  volume0_m3_A = volume_m3_A;
  volume0_m3_B = volume_m3_B;

  // Blink led at the end of setup (10 times)
  LED_blink(10);
  
  Serial.println("");
  Serial.println("----- End of Setup -----");  
}

void presentation()
{
  /*
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("UV Sensor", "1.2");
  // Register all sensors to gateway (they will be created as child devices)
  present(CHILD_ID_UV, S_UV);
  */
  // Present locally attached sensors here
  
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Water Meter", "1.0");

  // Register this device as Waterflow sensor
  present(CHILD_ID_A, S_WATER, "Compteur A");
  present(CHILD_ID_B, S_WATER, "Compteur B");
  present(CHILD_ID_AR,S_DIMMER, "Reset Compteur A");
  present(CHILD_ID_BR,S_DIMMER, "RESET Compteur B");

  Serial.println("----- End of presentation -----");  
}

void receive(const MyMessage &message)
{
  //When receiving a V_STATUS command, execute reset counter A

  if ( message.type == V_STATUS ) {
    Serial.println( "V_STATUS command received..." );

    int lstate = message.getInt();
    if (( lstate < 0 ) || ( lstate > 1 )) {
      Serial.println( "V_STATUS data invalid (should be 0/1)" );
      return;
    }
    if ( lstate == 1 && message.sensor == 3) {
      Serial.println( "Reset command received watermeter A" );
      reset_count_A();
      return;
    }
    if ( lstate == 1 && message.sensor == 4) {
      Serial.println( "Reset command received watermeter B" );
      reset_count_B();
      return;
    }

  } else {
    Serial.println( "Invalid command received..." );
    return;
  }
}

void loop() {
//==============================================================
// Infinite loop
//==============================================================

 // RESET counter by switch ?
 
  int val=digitalRead(PIN_reset);
  
  if(val==LOW) {
   reset_count_A();
   reset_count_B();
   Print_volume();
   LED_blink(1); // blink LED (and then wait to avoid switch rebounce)
  }

  // test for switch A
  int val_A=digitalRead(PIN_compteur_eau_A);
  
  if(val_A==LOW && val_old_A==HIGH ) {
    count_pulses_A(); // increment pulse counter
    delay(200); // wait to avoid rebounce
    val_old_A=LOW;
  } else {
    if(val_A==HIGH ) val_old_A=HIGH;
  }

  // test for switch B
  int val_B=digitalRead(PIN_compteur_eau_B);
  
  if(val_B==LOW && val_old_B==HIGH ) {
    count_pulses_B(); // increment pulse counter
    delay(200); // wait to avoid rebounce
    val_old_B=LOW;
  } else {
    if(val_B==HIGH ) val_old_B=HIGH;
  }
    
  // Calculate exact total volume (unit m3) - take in account pulse number for counter with >= 1 pulse/liter
  //calcul du volume exact total en m3 (tient compte du nombre d'impulsions - valable pour compteur a + de 1 pulse par litre)
  litres_precis_A = float(vol_litres_total_A)+ float(1.0/float(pulses_par_litre_A)*float(pulses_compteur_total_A));
  litres_precis_B = float(vol_litres_total_B)+ float(1.0/float(pulses_par_litre_B)*float(pulses_compteur_total_B));
  volume_m3_A = litres_precis_A*0.001;
  volume_m3_B = litres_precis_B*0.001;
 
 /* -----------------------------------------------------------------
  Test time interval for transmission to Raspberry
  millis() -> number of milliseconde since module power ON
              reset every about 50 days ...
  ref_time_TX_ms -> time reference in the loop
  delay_TX_volume -> delay between transmissions to Raspberry (ms)
 ----------------------------------------------------------------- */
  
  if (millis() - ref_time_TX_ms > delay_TX_volume){
    
  // Compute flowrate as l/mn : volume difference divide by time
  // flowrate = 1000.0*60.0*1000.0*(volume_m3-volume0_m3)/float(millis() - ref_time_TX_ms)
    coeff_flowrate = 60000000.0/float(millis() - ref_time_TX_ms);
    
    flowrate_lmn_A = coeff_flowrate*(volume_m3_A-volume0_m3_A);
    flowrate_lmn_B = coeff_flowrate*(volume_m3_B-volume0_m3_B);

  // Equivalent m3/h
    flowrate_m3h_A = flowrate_lmn_A * 0.06 ;
    flowrate_m3h_B = flowrate_lmn_B * 0.06 ;
  
  // update time reference between transmissions
    ref_time_TX_ms = millis(); 
  // update volume reference between transmissions
    volume0_m3_A = volume_m3_A;
    volume0_m3_B = volume_m3_B;
  
  // Display volume values on terminal PC (port USB emulation COM)
    Print_volume();
    
  // Display flowrate values on terminal PC (port USB emulation COM) unit l/mn and m3/h
    Serial.print("Flowrate A (l/mn) : "); // send on serial port in ASCII format
    Serial.print(flowrate_lmn_A,2); // send value on serial port 
    Serial.print(" (l/mn) ou "); 
    Serial.print(flowrate_m3h_A,3); // send value on serial port
    Serial.print(" (m3/h) -- Flowrate B (l/mn) : "); 
    
    Serial.print(flowrate_lmn_B,2); // send value on serial port 
    Serial.print(" (l/mn) ou "); 
    Serial.print(flowrate_m3h_B,3); // send value on serial port
    Serial.println(" (m3/h)"); 
  
  // Send values to gateway with MySensors protocol
    send(volumeMsg_A.set(volume_m3_A, 3));     // Send volume value to gateway - format x.xxx
    send(volumeMsg_B.set(volume_m3_B, 3));     // Send volume value to gateway - format x.xxx
    send(flowMsg_A.set(flowrate_lmn_A, 1));    // Send flowrate value to gateway - format x.x (l/mn)
    send(flowMsg_B.set(flowrate_lmn_B, 1));    // Send flowrate value to gateway - format x.x (l/mn)
    // Values for database
    send(flowMsg_m3_A.set(flowrate_m3h_A, 1)); // Send flowrate value to gateway - format x.x (m3/h) VAR1
    send(flowMsg_m3_B.set(flowrate_m3h_B, 1)); // Send flowrate value to gateway - format x.x (m3/h) VAR2
  // Blink LED to indicate sending to gateway
    LED_blink(1);
  }

 /* -----------------------------------------------------------------
    Save volume values on EEPROM
 ----------------------------------------------------------------- */  
  if (millis() - ref_time_EP_ms > delay_EEPROM){
    
  // Message on terminal : save on EEPROM
    Serial.println("");
    Serial.println("-- Sauvegarde sur EEPROM --");
 
  //save current volume and pulses on EEPROM (permanent)
  // in case of loose of power supply or WiFi
  // Write reduce life time of EEPROM (max < 100 000 cycles)
    EEPROM.put(eeprom_adr_vol_total   , vol_litres_total_A     );
    EEPROM.put(eeprom_adr_vol_total+4 , pulses_compteur_total_A);
    EEPROM.put(eeprom_adr_vol_total+8 , vol_litres_total_B     );
    EEPROM.put(eeprom_adr_vol_total+12, pulses_compteur_total_B);
    EEPROM.commit(); // Save changes to the flash (eeprom)
    Serial.println("-- EEPROM.put --- ");
    Print_volume();
  
  // update time reference between transmissions
    ref_time_EP_ms = millis(); 

  // Read again EEPROM to verify and print on terminal
    Serial.println("-- Verification ecriture sur EEPROM --");
    EEPROM.get(eeprom_adr_vol_total   , vol_litres_total_A     );
    EEPROM.get(eeprom_adr_vol_total+4 , pulses_compteur_total_A);
    EEPROM.get(eeprom_adr_vol_total+8 , vol_litres_total_B     );
    EEPROM.get(eeprom_adr_vol_total+12, pulses_compteur_total_B);
    Serial.println("-- EEPROM.get --- ");
    Print_volume();

  }
// End of loop
}

void count_pulses_A(){
//==============================================================
// Take in account each pulse in a integer "pulses_compteur_total_A"
// test if pulse count reach value for 1 liter
//==============================================================

  pulses_compteur_total_A++; // increment pulse counter
  
  if (pulses_compteur_total_A >= pulses_par_litre_A) 
    {
  // 1 L still count then reset pulse counter and increment volume counter
    pulses_compteur_total_A = 0;
    vol_litres_total_A++;
    }
  Serial.print("-- vol_litres_total_A : ");
  Serial.println(vol_litres_total_A);
}

void count_pulses_B(){
//==============================================================
// Take in account each pulse in a integer "pulses_compteur_total_B"
// test if pulse count reach value for 1 liter
//==============================================================

  pulses_compteur_total_B++; // increment pulse counter
  
  if (pulses_compteur_total_B >= pulses_par_litre_B) 
    {
  // 1 L still count then reset pulse counter and increment volume counter
    pulses_compteur_total_B = 0;
    vol_litres_total_B++;
    }
  Serial.print("-- vol_litres_total_B : ");
  Serial.println(vol_litres_total_B);
}

void reset_count_AB(){
//==============================================================
// Reset counter A & B
// (not used in this sketch witch switch)
//==============================================================

  reset_count_A();
  reset_count_B();
}

void reset_count_A(){
//==============================================================
// Reset counter B
// Will be save in EEPROM after delay_EEPROM time
//==============================================================

  pulses_compteur_total_A = 0;
  pulses_compteur_debit_A = 0;
  vol_litres_total_A = 0;
  flowrate_lmn_A = 0;
  volume0_m3_A = 0;
  volume_m3_A = volume0_m3_A;
  ref_time_TX_ms = millis();        // Initialize to current time for transmission
  ref_time_EP_ms = ref_time_TX_ms;  // Initialize to current time for EEPROM save
  Serial.println(" ------ RESET COUNTER A ---- ");
}

void reset_count_B(){
//==============================================================
// Reset counter B
// Will be save in EEPROM after delay_EEPROM time
//==============================================================

  pulses_compteur_total_B = 0;
  pulses_compteur_debit_B = 0;
  vol_litres_total_B = 0;
  flowrate_lmn_B = 0;
  volume0_m3_B = 0;
  volume_m3_B = volume0_m3_B;
  ref_time_TX_ms = millis();        // Initialize to current time for transmission
  ref_time_EP_ms = ref_time_TX_ms;  // Initialize to current time for EEPROM save
  Serial.println(" ------ RESET COUNTER B ---- ");
}

void LED_blink(byte N_blink){
//==============================================================
// Blink the led N_blink time 
// MY_DEFAULT_LED_BLINK_PERIOD ms On / MY_DEFAULT_LED_BLINK_PERIOD ms Off
//==============================================================
  for(byte i = 0; i < N_blink; ++i)    // Loop for N_blink blink
  {
  digitalWrite(PIN_LED_BUILTIN, LOW); // turn the LED on (LOW is the voltage level)
  delay(MY_DEFAULT_LED_BLINK_PERIOD);  // time to wait (millisecond)
  
  digitalWrite(PIN_LED_BUILTIN, HIGH);  // turn the LED off by making the voltage HIGH
  delay(MY_DEFAULT_LED_BLINK_PERIOD);  // time to wait (millisecond)
  }
}

void Print_volume(){
//==============================================================
// Print volumes on serial terminal 
//==============================================================
    Serial.println("");
    Serial.print("volume total A (L) : ");
    Serial.print(vol_litres_total_A,3);      // format x.xxx
    Serial.print(" -- volume total B (L) : ");
    Serial.println(vol_litres_total_B,3);    // format x.xxx
}
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