/**************************************************************************/
// DMX input test with serial enabled causes hang and WDT reset
// on esp8266 arduino v2.4.0+ but not v2.3.0 and earlier.
/**************************************************************************/
#include <ESP8266WiFi.h>
#include <LXESP8266UARTDMX.h>
#define LED_PIN D5
int got_dmx = 0;

#define CRASH true //This causes WDT reset in esp8266 arduino v2.4

void setup() {
  WiFi.forceSleepBegin(); //not using WiFi, sleep to prevent background activity
  #if CRASH
  Serial.begin(250000); //This causes WDT reset in esp8266 arduino v2.4
  #endif
  pinMode(LED_PIN, OUTPUT);
  pinMode(D0, OUTPUT);
  digitalWrite(D0, LOW); //_RE receiver enable pin, set low to receive
  ESP8266DMX.setDataReceivedCallback(&gotDMXCallback);
  delay(1000);        //avoid boot print??
  ESP8266DMX.startInput();
}

void gotDMXCallback(int slots) {
  got_dmx = slots;
}

void loop() {
  if ( got_dmx ) {
    //ESP8266 PWM is 10bit 0-1024
    analogWrite(LED_PIN,2*ESP8266DMX.getSlot(1));
  }
  else {
    digitalWrite(LED_PIN, !digitalRead(LED_PIN));
    delay(20);
  }
}