#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <KnxTpUart.h>
#include <PubSubClient.h>

KnxTpUart knx(&Serial1, "15.15.20");

PubSubClient mqtt;

void knxSetup();

void knxLoop();

void mqttLoop();

void mqttSetup();

void wifiSetup();

void setup() {
  Serial.begin(112500);
  delay(500);
  Serial.print("\n\n\nStartup\n");
  knxSetup();
  wifiSetup();
  configTime("Europe/Berlin", "de.pool.ntp.org");
  mqttSetup();
}

void wifiSetup() {
  WiFi.hostname("KnxEsp");
  WiFi.begin("HappyNet", "1Grausame!Sackratte7");
  while (WiFi.localIP() == 0UL) {
    delay(100);
  }

}

void loop() {
  knxLoop();
  mqttLoop();
}

void mqttSetup() {
  mqtt.setServer("10.0.0.50", 1883);
  mqtt.setBufferSize(512);
}

void mqttLoop() {
  if (!mqtt.loop()) {
    if (!mqtt.connect(WiFi.hostname().c_str())) {
      mqtt.disconnect();
    }
  }
}

void knxSetup() {
  Serial1.begin(19200, SERIAL_8E1);
  knx.uartReset();
  knx.setListenToBroadcasts(true);
}

void knxLoop() {
  auto type = knx.serialEvent();
  if (type != KNX_TELEGRAM) {
    return;
  }
  KnxTelegram *t = knx.getReceivedTelegram();
  Serial.printf("%3d / %3d / %3d len=%d, bool=%d\n", t->getTargetMainGroup(), t->getTargetMiddleGroup(), t->getTargetSubGroup(), t->getPayloadLength(), t->getBool());
}