Added I2C-LCD.

Added SoftwareSerial for 2nd MIDI port.
Added MIDI merge.

OSC2MidiGateway.ino

@@ -1,14 +1,3 @@
-// .../Arduino/hardware/espressif/esp32/cores/esp32/HardwareSerial.cpp:
-/*
-  #ifndef RX1
-  #define RX1 35
-  #endif
-
-  #ifndef TX1
-  #define TX1 34
-  #endif
-*/
-
 #if !(defined(ESP32) )
 #error This code is intended to run on the ESP32 platform! Please check your Tools->Board setting.
 #endif
@@ -16,11 +5,36 @@
 // Use from 0 to 4. Higher number, more debugging messages and memory usage.
 #define _WIFIMGR_LOGLEVEL_    3
 
-
 #define DEBUG 1
-#define AP_TRIGGER_PIN 15
+#define MDNS_NAME "osc2midi"
+#define AP_SSID_NAME "OSC2MIDI"
+#define AP_SSID_CONFIG_NAME "OSC2MIDI-Config"
+#define AP_PASSWORD "osc2midi"
+#define MDNS_NAME "osc2midi"
+#define SOFT_SERIAL_RX 18
+#define SOFT_SERIAL_TX 19
 #define AP_TIMEOUT 120
-#define AP_NAME "OSC2MidiBridge"
+#define AP_TRIGGER_PIN 15
+#define AP_DATA_RESET_PIN 15
+#define AP_MODE 23
+#define LCD_I2C_ADDR 0x27
+#define LCD_COL 16
+#define LCD_ROW 2
+
+#define FileFS        SPIFFS
+#define FS_Name       "SPIFFS"
+#define MIN_AP_PASSWORD_SIZE    8
+#define SSID_MAX_LEN            32
+#define PASS_MAX_LEN            64
+#define NUM_WIFI_CREDENTIALS      2
+#define  CONFIG_FILENAME              F("/wifi_cred.dat")
+// You only need to format the filesystem once
+//#define FORMAT_FILESYSTEM
+//#define RESET_AP_DATA
+#define WIFI_MULTI_1ST_CONNECT_WAITING_MS       100
+#define WIFI_MULTI_CONNECT_WAITING_MS           200
+#define WIFICHECK_INTERVAL    1000
+#define HEARTBEAT_INTERVAL    10000
 
 #include <esp_wifi.h>
 #include <WiFi.h>
@@ -49,23 +63,7 @@
 #include "OSC2Midi.h"
 #include <HardwareSerial.h>
 #include <SoftwareSerial.h>
-
+#include <LiquidCrystal_I2C.h>
-#define FileFS        SPIFFS
-#define FS_Name       "SPIFFS"
-#define MIN_AP_PASSWORD_SIZE    8
-#define SSID_MAX_LEN            32
-#define PASS_MAX_LEN            64
-#define NUM_WIFI_CREDENTIALS      2
-#define  CONFIG_FILENAME              F("/wifi_cred.dat")
-// You only need to format the filesystem once
-//#define FORMAT_FILESYSTEM
-//#define RESET_AP_DATA
-#define WIFI_MULTI_1ST_CONNECT_WAITING_MS       100
-#define WIFI_MULTI_CONNECT_WAITING_MS           200
-#define WIFICHECK_INTERVAL    1000
-#define HEARTBEAT_INTERVAL    10000
-#define AP_DATA_RESET_PIN 15
-#define AP_MODE 23
 
 typedef struct
 {
@@ -101,6 +99,7 @@ String AP_PASS;
 IPAddress stationIP   = IPAddress(0, 0, 0, 0);
 IPAddress gatewayIP   = IPAddress(192, 168, 2, 1);
 IPAddress netMask     = IPAddress(255, 255, 255, 0);
+LiquidCrystal_I2C lcd(LCD_I2C_ADDR, LCD_COL, LCD_ROW);
 
 /*
    UART    RX IO   TX IO   CTS   RTS
@@ -110,30 +109,54 @@ IPAddress netMask     = IPAddress(255, 255, 255, 0);
 */
 
 HardwareSerial midi1(2); // RX: 16, TX: 17
-//HardwareSerial midi2(1); // RX: 35, TX: 34 (changed in .../Arduino/hardware/espressif/esp32/cores/esp32/HardwareSerial.cpp!)
+#ifndef D5
-#define D5 (18)
+#define D5 (SOFT_SERIAL_RX)
-#define D6 (19)
+#define D6 (SOFT_SERIAL_TX)
+//#define D7 (23)
+//#define D8 (5)
+//#define TX (1)
+#endif
 SoftwareSerial midi2;
 
 MIDI_CREATE_INSTANCE(HardwareSerial, midi1, MIDI1);
-MIDI_CREATE_INSTANCE(SoftwareSerial, midi2, MIDI2);
 
 void setup()
 {
+  pinMode(AP_TRIGGER_PIN, INPUT_PULLUP);
+  pinMode(AP_DATA_RESET_PIN, INPUT_PULLUP);
+  pinMode(AP_MODE, INPUT_PULLUP);
+
+  Serial.begin(115200);
+  Serial.setDebugOutput(true);
+
+  DEBUG_MSG("<start>\nOSC2Midi\n");
+
+  lcd.init();
+  lcd.backlight();
+  lcd.clear();
+  lcd.noCursor();
+  lcd.setCursor(0, 0);
+  lcd.print("OSC2MIDI");
+
   WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
 
   Serial.print("\nStarting AutoConnectWithFeedBack using " + String(FS_Name));
   Serial.println(" on " + String(ARDUINO_BOARD));
 
-  pinMode(AP_DATA_RESET_PIN, INPUT_PULLUP);
-  pinMode(AP_MODE, INPUT_PULLUP);
 
   if (digitalRead(AP_MODE) == LOW)
   {
-    Serial.println("Mode: AP");
+    Serial.println("Mode AccessPoint");
+    WiFi.softAP(AP_SSID_NAME, AP_PASSWORD);
+    lcd.clear();
+    lcd.setCursor(0, 0);
+    lcd.print("Mode AP");
   }
   else
   {
+    Serial.println("Mode: Client");
+    lcd.clear();
+
 #if defined(FORMAT_FILESYSTEM)
     FileFS.format();
 #endif
@@ -192,8 +215,8 @@ void setup()
     }
 
     // SSID and PW for Config Portal
-    AP_SSID = "OSC2MIDI";
+    AP_SSID = AP_SSID_CONFIG_NAME;
-    AP_PASS = "osc2midi";
+    AP_PASS = AP_PASSWORD;
 
     // From v1.1.0, Don't permit NULL password
     if ( (Router_SSID == "") || (Router_Pass == "") )
@@ -205,9 +228,17 @@ void setup()
       // Starts an access point
       //if (!ESP_wifiManager.startConfigPortal((const char *) ssid.c_str(), password))
       if ( !ESP_wifiManager.startConfigPortal(AP_SSID.c_str(), AP_PASS.c_str()) )
+      {
         Serial.println("Not connected to WiFi but continuing anyway.");
+        lcd.setCursor(0, 0);
+        lcd.print("Mode WiFi Cfg-AP");
+        lcd.setCursor(0, 1);
+        lcd.print("192.168.100.1");
+      }
       else
+      {
         Serial.println("WiFi connected...yeey :)");
+      }
 
       memset(&WM_config, 0, sizeof(WM_config));
 
@@ -279,7 +310,7 @@ void setup()
     else
       Serial.println(ESP_wifiManager.getStatus(WiFi.status()));
 
-    if (!MDNS.begin("osc2midi")) {
+    if (!MDNS.begin(MDNS_NAME)) {
       Serial.println("Error setting up MDNS responder!");
       while (1) {
         delay(1000);
@@ -289,6 +320,12 @@ void setup()
     {
       Serial.println("mDNS started.");
     }
+
+    lcd.clear();
+    lcd.setCursor(0, 0);
+    lcd.print("Mode WiFi client");
+    lcd.setCursor(0, 1);
+    lcd.print(WiFi.localIP());
   }
 
   /*
@@ -297,29 +334,20 @@ void setup()
   */
   midi1.begin(31250);
   midi2.begin(31250, SWSERIAL_8N1, D5, D6, false, 95, 11);
-  
+  midi2.enableIntTx(false);
-  Serial.begin(115200);
-  Serial.setDebugOutput(true);
-
-  DEBUG_MSG("<start>\nOSC2Midi\n");
-
-  pinMode(AP_TRIGGER_PIN, INPUT_PULLUP);
-
-  //WiFi.softAP("OSC2Midi", "1357924680");
 
   udp.begin(8000);
 
   MIDI1.begin(MIDI_CHANNEL_OMNI);
   MIDI1.setHandleControlChange(MidiCCToOSC);
   MIDI1.turnThruOff();
-
-  MIDI2.begin(MIDI_CHANNEL_OMNI);
-  MIDI2.setHandleControlChange(MidiCCToOSC);
-  MIDI2.turnThruOff();
 }
 
 void loop()
 {
+  if (digitalRead(AP_MODE) != LOW)
+    check_status();
+
   // check if we need to configure a AP
   if (digitalRead(AP_TRIGGER_PIN) == LOW)
   {
@@ -330,7 +358,7 @@ void loop()
 
     wm.setConfigPortalTimeout(AP_TIMEOUT);
 
-    if (!wm.startConfigPortal(AP_NAME))
+    if (!wm.startConfigPortal(AP_SSID_NAME))
     {
       DEBUG_MSG("Failed to connect and hit timeout - restarting!\n");
       delay(3000);
@@ -375,36 +403,28 @@ void loop()
     //MIDI1.read();
     if (MIDI1.read())
     {
-      Serial.print("MIDI-IN[1] Type: ");
+      DEBUG_MSG("MIDI-IN[1] Type: ");
-      Serial.print(MIDI1.getType(), DEC);
+      DEBUG_MSG("%3d", MIDI1.getType());
-      Serial.print(" Data1: ");
+      DEBUG_MSG(" Data1: ");
-      Serial.print(MIDI1.getData1(), DEC);
+      DEBUG_MSG("%3d", MIDI1.getData1());
-      Serial.print(" Data2: ");
+      DEBUG_MSG(" Data2: ");
-      Serial.print(MIDI1.getData2(), DEC);
+      DEBUG_MSG("%3d", MIDI1.getData2());
-      Serial.print(" Channel: ");
+      DEBUG_MSG(" Channel: ");
-      Serial.print(MIDI1.getChannel(), DEC);
+      DEBUG_MSG("%0d", MIDI1.getChannel());
-      Serial.println(" Channel: ");
+      DEBUG_MSG("\n");
-    }
+    }
-
+
-    // MIDI-Merger from MIDI2 to MIDI1
+    // MIDI-Merger from (Soft-)MIDI2 to MIDI1
-    if (MIDI2.read())
+    if (midi2.available() > 0)
-    {
+    {
-      MIDI1.send(MIDI2.getType(),
+      while (midi2.available() > 0)
-                 MIDI2.getData1(),
+      {
-                 MIDI2.getData2(),
+        Serial.print("->M:");
-                 MIDI2.getChannel());
+        Serial.println(midi2.peek(), DEC);
-      Serial.print("MIDI-IN[2] Type: ");
+        midi1.write(midi2.read());
-      Serial.print(MIDI2.getType(), DEC);
+      }
-      Serial.print(" Data1: ");
-      Serial.print(MIDI2.getData1(), DEC);
-      Serial.print(" Data2: ");
-      Serial.print(MIDI2.getData2(), DEC);
-      Serial.print(" Channel: ");
-      Serial.print(MIDI2.getChannel(), DEC);
-      Serial.println(" Channel: ");
     }
   }
-  check_status();
 }
 
 void OSCToMidiCC(OSCMessage & msg, int offset)