SparkFun-DMX to LED-Shield mit ESP32-Thing-Plus-C

[editanstalt]

Hallo.
Dies ist mein erster Beitrag. Feedback willkommen

Ich hab ein Problem beim Empfangen/Verarbeiten eines DMX-Signals mit der genannter Hardware.
Mit meinem jetzigen Sketch, welcher auf das Input-example des SparkFunDMX-Library basiert.

/*
  Reads DMX data from channel 1
  
  By: Dryw Wade
  SparkFun Electronics
  Date: 10/3/2023
  License: GNU. See license file for more information but you can
  basically do whatever you want with this code.
  This example runs two servos and a number of LED's off of 5 DMX channels
  
  Feel like supporting open source hardware?
  Buy a board from SparkFun! https://www.sparkfun.com/products/15110
  
  Hardware Connections:
  Connect a Thing Plus board to the SparkFun DMX Shield, and connect a DMX XLR-3
  cable between the shield and another device that inputs DMX data. You can use
  a second board and shield running Example 1!
*/

// Inlcude DMX library
#include <SparkFunDMX.h>
// Inlcude FastLED library
#include <FastLED.h>

// Create DMX object
SparkFunDMX dmx;

// Create serial port to be used for DMX interface. Exact implementation depends
// on platform, this example is for the ESP32
HardwareSerial dmxSerial(1);

// Enable pin for DMX shield (Free pin on Thing Plus or Feather pinout)
uint8_t enPin = 4;

// Number of DMX channels, can be up to 512
//ex uint16_t numChannels = 3;
//Channel Definitions
//#define TOTAL_CHANNELS 3
uint16_t TOTAL_CHANNELS = 3;

#define HUE_CHANNEL 1
//#define SATURATION_CHANNEL 2
//#define VALUE_CHANNEL 3

//Fixture Hardware Definitions
// How many leds in your strip? Uncomment the corresponding line
#define NUM_LEDS 20 //1 Inch

// The LuMini rings need two data pins connected
#define DATA_PIN 19
#define CLOCK_PIN 18

// Define the array of leds
CRGB ring[NUM_LEDS];


void setup()
{
    Serial.begin(115200);
    Serial.println("initialzed...");

    // Begin DMX serial port
    dmxSerial.begin(DMX_BAUD, DMX_FORMAT);

    // Begin DMX driver
    dmx.begin(dmxSerial, enPin, TOTAL_CHANNELS);

    // Set communicaiton direction, which can be changed on the fly as needed
    dmx.setComDir(DMX_READ_DIR);

    Serial.println("DMX initialized!");

  // Begin LED driver
  LEDS.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR>(ring, NUM_LEDS);
  LEDS.setBrightness(32); //LEDs dimmed for testing purposes
}


void loop()
{

  dmx.update();
  
    // Wait until dmx-data has been received
    while(dmx.dataAvailable() == false)
    {
        // Must call update() to actually check for received data
        dmx.update();
    }

    // Data has been received, read out channels
    uint8_t hue = dmx.readByte(HUE_CHANNEL);
  //uint8_t saturation = dmx.readByte(SATURATION_CHANNEL);
  //uint8_t value = dmx.readByte(VALUE_CHANNEL);

    if(hue > 0 ){    //without this if-condition most readings are = 0 resulting in wrong hue on LED-ring
    Serial.print("DMX: read value from hue channel: ");
    Serial.println(hue);

  for (int led = 0; led < NUM_LEDS; led++)
  {
    //ring[led] = CHSV(hue, saturation, value);
    ring[led] = CHSV(hue, 255, 255); //saturation and value set to 255 just for testing
  }
  FastLED.show();

   }

}

Ein eingehendes Signal über DMX Kanal 1 (ändernde Werte 0-255) kommt an, aber die meiste Zeit wird der Wert als 0 interpretiert. Siehe Serial:

Der Wert soll im genannten Sketch die Farbe(=hue) eines LED-Rings verändern. Dies gelingt nur annähernd, wenn ich behelfmässig ein if(hue!=0) -Bedingung stelle. Siehe Serial:

Leider leidet dabei die Reaktionsgeschwindigkeit der Farbänderung: vermutlich weil halt nach wie vor die meisten Werte als 0 gelesen werden.

Sieht jemensch, wo die Ursache liegen könnte?
Vielen Dank!

Libraries:
SparkfunDMX v2.0.1
https://github.com/sparkfun/SparkFunDMX
FastLED v3.6.0
https://github.com/FastLED/FastLED

SparkFun-DMX to LED-Shield
https://learn.sparkfun.com/tutorials/sparkfun-esp32-dmx-to-led-shield/all

Sparkfun Thing Plus ESP32 Wroom USB-C
https://learn.sparkfun.com/tutorials/esp32-thing-plus-usb-c-hookup-guide?_gl=154k98a_gaMjExODgzMDY1Ni4xNzA2MDI2NDUz_ga_T369JS7J9N*MTcwOTg5NTQ1Mi4xNS4xLjE3MDk4OTU1NDQuMzcuMC4w&_ga=2.268942390.611241178.1709895454-2118830656.1706026453

[editanstalt]

Das hier ist das unveränderte DMX-Input Sketch der Library.

Hier passiert mir dasselbe:
Die meisten Lesungen = 0.

/*
  Reads DMX data from channel 1
  
  By: Dryw Wade
  SparkFun Electronics
  Date: 10/3/2023
  License: GNU. See license file for more information but you can
  basically do whatever you want with this code.
  This example runs two servos and a number of LED's off of 5 DMX channels
  
  Feel like supporting open source hardware?
  Buy a board from SparkFun! https://www.sparkfun.com/products/15110
  
  Hardware Connections:
  Connect a Thing Plus board to the SparkFun DMX Shield, and connect a DMX XLR-3
  cable between the shield and another device that inputs DMX data. You can use
  a second board and shield running Example 1!
*/

// Inlcude DMX library
#include <SparkFunDMX.h>

// Create DMX object
SparkFunDMX dmx;

// Create serial port to be used for DMX interface. Exact implementation depends
// on platform, this example is for the ESP32
HardwareSerial dmxSerial(2);

// Enable pin for DMX shield (Free pin on Thing Plus or Feather pinout)
uint8_t enPin = 4;

// Number of DMX channels, can be up tp 512
uint16_t numChannels = 1;

void setup()
{
    Serial.begin(115200);
    Serial.println("SparkFun DMX Example 2 - Input");

    // Begin DMX serial port
    dmxSerial.begin(DMX_BAUD, DMX_FORMAT);

    // Begin DMX driver
    dmx.begin(dmxSerial, enPin, numChannels);

    // Set communicaiton direction, which can be changed on the fly as needed
    dmx.setComDir(DMX_READ_DIR);

    Serial.println("DMX initialized!");
}

void loop()
{
    // Wait until data has been received
    while(dmx.dataAvailable() == false)
    {
        // Must called update() to actually check for received data
        dmx.update();
    }

    // Data has been received, read out channel 1
    uint8_t data = dmx.readByte(1);
    
    Serial.print("DMX: read value from channel 1: ");
    Serial.println(data);
}

[editanstalt]

Es gibt eine Github Diskussion, wo offenbar dasselbe Problem besteht.
Dort wird meines Wissens eine Lösung gefunden durch Anpassungen der Library, welche in aktueller Library Version implementiert wurden.
Siehe:https://github.com//sparkfun/SparkFunDmx/issues/10

Trotzdem klappt bei meinem Setup noch nicht. hmmm:
Falls jemand eine andere Herangehensweise empfehlen kann, möglichst mit der gleichen Hardware zum Steuern von APA102 LEDs, bin ich auch froh um Hinweise.

Danke!