rename global dmx... variables to dmxInput...

This is the first step in supporting both dmx input and dmx output on different pins.

wled00/cfg.cpp

@@ -522,6 +522,13 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
 
   tdd = if_live[F("timeout")] | -1;
   if (tdd >= 0) realtimeTimeoutMs = tdd * 100;
+
+  #ifdef WLED_ENABLE_DMX_INPUT
+    CJSON(dmxInputTransmitPin, if_live_dmx[F("inputRxPin")]);
+    CJSON(dmxInputReceivePin, if_live_dmx[F("inputTxPin")]);
+    CJSON(dmxInputEnablePin, if_live_dmx[F("enablePin")]);
+  #endif
+
   CJSON(arlsForceMaxBri, if_live[F("maxbri")]);
   CJSON(arlsDisableGammaCorrection, if_live[F("no-gc")]); // false
   CJSON(arlsOffset, if_live[F("offset")]); // 0
@@ -1001,6 +1008,11 @@ void serializeConfig() {
   if_live_dmx[F("addr")] = DMXAddress;
   if_live_dmx[F("dss")] = DMXSegmentSpacing;
   if_live_dmx["mode"] = DMXMode;
+  #ifdef WLED_ENABLE_DMX_INPUT
+    if_live_dmx[F("rxPin")] = dmxInputTransmitPin;
+    if_live_dmx[F("txPin")] = dmxInputReceivePin;
+    if_live_dmx[F("enablePin")] = dmxInputEnablePin;
+  #endif
 
   if_live[F("timeout")] = realtimeTimeoutMs / 100;
   if_live[F("maxbri")] = arlsForceMaxBri;

wled00/dmx.cpp

@@ -76,3 +76,70 @@ void initDMX() {
  #endif
 }
 #endif
+
+
+#ifdef WLED_ENABLE_DMX_INPUT
+
+#include <esp_dmx.h>
+
+
+dmx_port_t dmxPort = 2;
+void initDMX() {
+/* Set the DMX hardware pins to the pins that we want to use. */
+  if(dmxInputReceivePin > 0) {
+    USER_PRINTF("Listening for DMX on pin %u\n", dmxInputReceivePin);
+    dmx_set_pin(dmxPort, dmxInputTransmitPin, dmxInputReceivePin, dmxInputEnablePin);
+  }
+  else {
+    USER_PRINTLN("DMX input disabled due to dmxReceivePin not being set");
+    return;
+  }
+
+  /* Now we can install the DMX driver! We'll tell it which DMX port to use and
+    which interrupt priority it should have. If you aren't sure which interrupt
+    priority to use, you can use the macro `DMX_DEFAULT_INTR_FLAG` to set the
+    interrupt to its default settings.*/
+  dmx_driver_install(dmxPort, ESP_INTR_FLAG_LEVEL3);
+}
+  
+bool dmxIsConnected = false;
+unsigned long dmxLastUpdate = 0;
+
+void handleDMXInput() {
+  if(dmxInputReceivePin < 1) {
+    return;
+  }
+  byte dmxdata[DMX_PACKET_SIZE];
+  dmx_packet_t packet;
+  unsigned long now = millis();
+  if (dmx_receive(dmxPort, &packet, 0)) {
+
+    /* We should check to make sure that there weren't any DMX errors. */
+    if (!packet.err) {
+      /* If this is the first DMX data we've received, lets log it! */
+      if (!dmxIsConnected) {
+        USER_PRINTLN("DMX is connected!");
+        dmxIsConnected = true;
+      }
+
+      dmx_read(dmxPort, dmxdata, packet.size);
+      handleDMXData(1, 512, dmxdata, REALTIME_MODE_DMX, 0);
+      dmxLastUpdate = now;
+
+    } else {
+      /* Oops! A DMX error occurred! Don't worry, this can happen when you first
+        connect or disconnect your DMX devices. If you are consistently getting
+        DMX errors, then something may have gone wrong with your code or
+        something is seriously wrong with your DMX transmitter. */
+     DEBUG_PRINT("A DMX error occurred - ");
+     DEBUG_PRINTLN(packet.err);
+    }
+  }
+  else if (dmxIsConnected && (now - dmxLastUpdate > 5000)) {
+    dmxIsConnected = false;
+    USER_PRINTLN("DMX was disconnected.");
+  }
+}
+#else
+void initDMX();
+#endif

wled00/set.cpp

@@ -420,6 +420,12 @@ void handleSettingsSet(AsyncWebServerRequest *request, byte subPage)
     t = request->arg(F("WO")).toInt();
     if (t >= -255  && t <= 255) arlsOffset = t;
 
+#ifdef WLED_ENABLE_DMX_INPUT
+    dmxInputTransmitPin = request->arg(F("IDMT")).toInt();
+    dmxInputReceivePin = request->arg(F("IDMR")).toInt();
+    dmxInputEnablePin= request->arg(F("IDME")).toInt();
+#endif
+
     #ifndef WLED_DISABLE_ALEXA
     alexaEnabled = request->hasArg(F("AL"));
     strlcpy(alexaInvocationName, request->arg(F("AI")).c_str(), 33);

wled00/wled.cpp

@@ -423,6 +423,11 @@ void WLED::setup()
 #ifdef WLED_ENABLE_DMX //reserve GPIO2 as hardcoded DMX pin
   PinManager::allocatePin(2, true, PinOwner::DMX);
 #endif
+#ifdef WLED_ENABLE_DMX_INPUT
+  if(dmxInputTransmitPin > 0) PinManager::allocatePin(dmxInputTransmitPin, true, PinOwner::DMX);
+  if(dmxInputReceivePin > 0) PinManager::allocatePin(dmxInputReceivePin, true, PinOwner::DMX);
+  if(dmxInputEnablePin > 0) PinManager::allocatePin(dmxInputEnablePin, true, PinOwner::DMX);
+#endif
 
   DEBUG_PRINTLN(F("Registering usermods ..."));
   registerUsermods();

wled00/wled.h

@@ -459,7 +459,13 @@ WLED_GLOBAL bool arlsForceMaxBri _INIT(false);                    // enable to f
   WLED_GLOBAL uint16_t DMXStart _INIT(10);        // start address of the first fixture
   WLED_GLOBAL uint16_t DMXStartLED _INIT(0);      // LED from which DMX fixtures start
 #endif
-WLED_GLOBAL uint16_t e131Universe _INIT(1);                       // settings for E1.31 (sACN) protocol (only DMX_MODE_MULTIPLE_* can span over consecutive universes)
+#ifdef WLED_ENABLE_DMX_INPUT
+  WLED_GLOBAL int dmxInputTransmitPin _INIT(0);
+  WLED_GLOBAL int dmxInputReceivePin _INIT(0);
+  WLED_GLOBAL int dmxInputEnablePin _INIT(0);
+#endif
+
+WLED_GLOBAL uint16_t e131Universe _INIT(1);                       // settings for E1.31 (sACN) protocol (only DMX_MODE_MULTIPLE_* can span over consequtive universes)
 WLED_GLOBAL uint16_t e131Port _INIT(5568);                        // DMX in port. E1.31 default is 5568, Art-Net is 6454
 WLED_GLOBAL byte e131Priority _INIT(0);                           // E1.31 port priority (if != 0 priority handling is active)
 WLED_GLOBAL E131Priority highPriority _INIT(3);                   // E1.31 highest priority tracking, init = timeout in seconds

wled00/xml.cpp

@@ -436,6 +436,17 @@ void getSettingsJS(byte subPage, Print& settingsScript)
     printSetFormCheckbox(settingsScript,PSTR("ES"),e131SkipOutOfSequence);
     printSetFormCheckbox(settingsScript,PSTR("EM"),e131Multicast);
     printSetFormValue(settingsScript,PSTR("EU"),e131Universe);
+#ifdef WLED_ENABLE_DMX
+    oappend(SET_F("hideNoDMX();"));  // WLEDMM hide "not compiled in" message    
+#endif    
+#ifndef WLED_ENABLE_DMX_INPUT
+    oappend(SET_F("hideDMXInput();"));  // WLEDMM hide "dmx input" settings
+#else
+    oappend(SET_F("hideNoDMXInput();"));  // WLEDMM hide "not compiled in" message
+    sappend('v',SET_F("IDMT"),dmxInputTransmitPin);
+    sappend('v',SET_F("IDMR"),dmxInputReceivePin);
+    sappend('v',SET_F("IDME"),dmxInputEnablePin);
+#endif
     printSetFormValue(settingsScript,PSTR("DA"),DMXAddress);
     printSetFormValue(settingsScript,PSTR("XX"),DMXSegmentSpacing);
     printSetFormValue(settingsScript,PSTR("PY"),e131Priority);