mysensors_registre_airchaud/registre_airchaud_code.ino

#define MY_DEBUG
// Enable and select radio type attached 
#define MY_RADIO_RF24
// #define MY_RF24_PA_LEVEL RF24_PA_MIN
// #define MY_RF24_PA_LEVEL RF24_PA_LOW
// #define MY_RF24_PA_LEVEL RF24_PA_HIGH
#define MY_RF24_PA_LEVEL RF24_PA_MAX

#define MY_RF24_CHANNEL 14

#define MY_REPEATER_FEATURE

#define MY_DEFAULT_RX_LED_PIN A0
#define MY_DEFAULT_TX_LED_PIN A1
#define MY_DEFAULT_ERR_LED_PIN A2

#include <SPI.h>
#include <MySensors.h>

// https://lastminuteengineers.com/multiple-ds18b20-arduino-tutorial/
#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 11 on the Arduino
#define ONE_WIRE_BUS 7
// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

#define ROTATION_CHILD_ID 0
#define CHILD_ID_TEMP 1

MyMessage dimmerMsg(ROTATION_CHILD_ID, V_DIMMER);
MyMessage lightMsg(ROTATION_CHILD_ID, V_LIGHT); // we need init light message to make the dimmer appear in HA
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);

/* 
control a 28BYJ-48 stepper motor with ULN2003 driver board
https://www.makerguides.com/28byj-48-stepper-motor-arduino-tutorial/
*/
#include "Stepper.h"
// Define number of steps per rotation:
const int stepsPerRevolution = 2048; // can be 4096
// ULN2003 Wiring:
// Pin 3 to IN1
// Pin 4 to IN2
// Pin 5 to IN3
// Pin 6 to IN4

// Create stepper object called 'myStepper', note the pin order:
Stepper myStepper = Stepper(stepsPerRevolution, 3, 5, 4, 6);

int prevDimValue=0;
int newDimValue=0;
char convBuffer[10];


float DTemp;
float old_DTemp;


void presentation()  
{ 
  #ifdef MY_DEBUG
    Serial.println("- - - - - presentation - - - - -");
  #endif
  
  sendSketchInfo("Registre Air Chaud", "0.2");

  present(ROTATION_CHILD_ID, S_DIMMER, "rotation");
  present(CHILD_ID_TEMP, S_TEMP, "Temperature");
}

void setup() {
  #ifdef MY_DEBUG
    Serial.println("- - - - - setup - - - - -");
  #endif
  
  myStepper.setSpeed(5); // Set the speed to 5 rpm:

  // todo make a homing of stepper motor OR find a way to sensorize where it is
  
  send(dimmerMsg.set(prevDimValue));
  send(lightMsg.set(1));

  sensors.begin();
}

void loop() {
  #ifdef MY_DEBUG
    // Serial.println("- - - - - loop - - - - -");
  #endif

  sensors.requestTemperatures();
  old_DTemp = DTemp;
  DTemp = sensors.getTempCByIndex(0);
  if (DTemp != old_DTemp && DTemp != -127)
  {
    send(msgTemp.set(DTemp, 1));
    old_DTemp = DTemp;
  }
  
  delay(5000);
}

// Handle incoming messages 
void receive(const MyMessage &message) {

  #ifdef MY_DEBUG
    Serial.println("- - - - - receive - - - - -");
    Serial.print("Last reading for sensor: ");
  #endif

  if (message.type == V_LIGHT) {

    #ifdef MY_DEBUG
      Serial.println("- - - - - receive V_LIGHT - - - - -");
    #endif

  } else if (message.type == V_DIMMER) {

    #ifdef MY_DEBUG
      Serial.println("- - - - - receive V_DIMMER - - - - -");
    #endif

    newDimValue = atoi(message.getString(convBuffer));

    #ifdef MY_DEBUG
      Serial.print("prevDimValue: ");
      Serial.println(prevDimValue);  
      Serial.print("newDimValue: ");
      Serial.println(newDimValue);
    #endif
    
    int quart = stepsPerRevolution / 4; // how many rotation do we want max (here 45° so from 0 to 512 steps)
    int diff = prevDimValue - newDimValue; // get the difference between the previous and the new dimm value
    prevDimValue = newDimValue; // record new dimm as previous dimm
    int steps = (quart / 100) * diff; // convert diff on percent to steps
    #ifdef MY_DEBUG
      Serial.print("quart: ");
      Serial.println(quart);
      Serial.print("diff: ");
      Serial.println(diff);
      Serial.print("steps: ");
      Serial.println(steps);
    #endif
    
    myStepper.step(steps); // move the stepper

    // todo release the stepper motor to free power consumption
  }
}