S4__esp32_osc_actuator.cpp

// //////////////////////////////////////////////////////////////////////////
// this sketch reads out three sensors and sends their values over OSC
// it also accepts an incoming message to activate the relay
// //////////////////////////////////////////////////////////////////////////

#include <Arduino.h>
#include <easywifi.h>
#include <WiFiUdp.h>
#include <OSCMessage.h>

#define WIFI_SSID "hslab_2.4GhHz"
#define WIFI_PASSWORD "enterenter"

int reading1, reading2, reading3;

int times_per_second = 200;
int refresh_rate = 1000 / times_per_second;

int threshold = 2000;

WiFiUDP Udp;                                // A UDP instance to let us send and receive packets over UDP
const IPAddress destination(192, 168, 50, 255);
const unsigned int rxport = 54321;          // remote port to receive OSC
const unsigned int txport = 12345;        // local port to listen for OSC packets (actually not used 

void setup() {
  // initialize serial communication 
  // over the USB wire back to our computer
  Serial.begin( 9600 );
  while(!Serial) ;

  // define which pins in our sketch 
  // will be used as inputs and which as outputs
  pinMode(A2, INPUT);
  pinMode(A3, INPUT);
  pinMode(A4, INPUT);

  // connect to existing wifi access point as client
  if( wifi_connect_as_client(WIFI_SSID, WIFI_PASSWORD) ) {
    // print debugging information
    wifi_print_mode();
    wifi_print_ip(); // print our known ip address
  } else {
    Serial.print("Failed to connect to wifi ");
    Serial.print( WIFI_SSID );
    Serial.println();
  }

  Udp.begin(rxport);
  Serial.print("Listening on port ");
  Serial.println(rxport);
}

void osc_dispatch(String addr, int value) {
  // these two lines craft the message (with an address and a parameter)
  OSCMessage out( addr.c_str() );
  out.add( value );

  // these 4 lines that follow send out the message
  Udp.beginPacket(destination, txport);
  out.send(Udp);
  //Udp.endPacket();
  out.empty();
}

void on_relay(OSCMessage &msg, int offset) {
//  Serial.println("I got the message for the relay, but I am doing nothing with it");
  Serial.println( "Message received: on_relay" );

  float val = msg.getFloat(0);

  Serial.print( "value of message: " );
  Serial.println( val );

  if(val > 0.5f) {
    Serial.println("RELAY ON");
    digitalWrite(33, HIGH); // ON
  } else {
    Serial.println("RELAY OFF");
    digitalWrite(33, LOW); // OFF
  }

}

void osc_incoming_message_pump() {
  // check if we have any incoming OSC in the queue
  if( (size = Udp.parsePacket()) > 0) {
    // read the entire package coming in
    while( size-- ) {
      in.fill( Udp.read() );
    }
    // check that OSC package doesn't contain any errors
    if( !in.hasError() ) {
      // this is the incoming message router
      in.route("*", on_relay);
    }
  }
} // osc_incoming_message_pump()

void loop() {
  OSCMessage in;
  int size;

  // read all of my sensor values and store them in a variable
  reading1 = analogRead(A2);
  reading2 = analogRead(A3);
  reading3 = analogRead(A4);

  // send out those readings wrapped as OSC messages onto the network
  osc_dispatch("/sensor/one/luis", reading1);
  osc_dispatch("/sensor/two/luis", reading2);
  osc_dispatch("/sensor/three/luis", reading3);
  
  osc_incoming_message_pump();

  delay(refresh_rate); // this is our refresh rate // is in milliseconds 1 sec = 1000 ms (1000 / 200 = 5)
}