Several small optimizations.

OSC2MIDI.ino

@@ -1,5 +1,5 @@
 // Use from 0 to 4. Higher number, more debugging messages and memory usage.
-#define _WIFIMGR_LOGLEVEL_    4
+#define _WIFIMGR_LOGLEVEL_  1
 #define DEBUG               1
 
 #include <WiFi.h>
@@ -22,10 +22,8 @@
 #define AP_PASSWORD           "osc2midi"
 #define AP_SSID_CONFIG_NAME   "OSC2MIDI-Config"
 #define AP_CONFIG_PASSWORD    "osc2midi"
-#define MDNS_NAME "osc2midi"
 #define SOFT_SERIAL_RX        18
 #define SOFT_SERIAL_TX        19
-#define AP_TIMEOUT 120
 #define AP_DATA_RESET_PIN     35
 #define AP_MODE_PIN           34
 #define LCD_I2C_ADDR          0x27
@@ -50,7 +48,7 @@ HardwareSerial midi1(2); // RX: 16, TX: 17
 //#define TX (1)
 #endif
 SoftwareSerial midi2;
-uint32_t k_rate_last = millis();
+uint32_t k_rate_last;
 bool ap_mode_state = digitalRead(AP_MODE_PIN);
 
 MIDI_CREATE_INSTANCE(HardwareSerial, midi1, MIDI1);
@@ -62,44 +60,58 @@ void setup()
 
   Serial.begin(115200);
   Serial.setDebugOutput(true);
-  Serial.println("<start>");
+  Serial.println(F("OSC2MIDI (c)2020 H. Wirtz <wirtz@parasitstudio.de>"));
 
   lcd.init();
   lcd.backlight();
   lcd.clear();
   lcd.noCursor();
-  lcd.setCursor(0, 0);
-  lcd.print("* OSC2MIDI *");
+  lcd.setCursor(2, 0);
+  lcd.print(F("* OSC2MIDI *"));
+  lcd.setCursor(0, 1);
+  lcd.print(F("(c)parasiTstudio"));
   delay(1000);
 
   if (ap_mode_state == LOW)
   {
-    Serial.println("Mode Access-Point");
-    WiFi.softAP(AP_SSID_NAME, AP_PASSWORD);
+    DEBUG_MSG("Mode Access-Point\n");
+
+    if (!WiFi.softAPConfig(IPAddress(192, 168, 4, 1), IPAddress(192, 168, 4, 1), IPAddress(255, 255, 255, 0))) {
+      DEBUG_MSG("AP Config Failed\n");
+    }
+
+    if (!WiFi.softAP(AP_SSID_NAME, AP_PASSWORD))
+    {
+      DEBUG_MSG("Failed to start AP\n");
+      lcd.print(F("Failed "));
+      delay(1000);
+      lcd.print(F("- restart"));
+      delay(1000);
+      ESP.restart();
+    }
+
     lcd.clear();
     lcd.setCursor(0, 0);
-    lcd.print("Mode AP");
+    lcd.print(F("Mode AP"));
     lcd.setCursor(0, 1);
     lcd.print(WiFi.softAPIP());
   }
   else
   {
-    Serial.println("Mode Client");
+    DEBUG_MSG("Mode Client\n");
 
     WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
 
-    //WiFiManager, Local intialization. Once its business is done, there is no need to keep it around
     WiFiManager wm;
 
     if (digitalRead(AP_DATA_RESET_PIN) != LOW)
     {
       wm.resetSettings();
-      Serial.println("Resetting AP data");
+      DEBUG_MSG("Resetting AP data\n");
       lcd.clear();
       lcd.setCursor(0, 0);
-      lcd.print("Resetting AP data");
+      lcd.print(F("Resetting AP data"));
       delay(2000);
-      //ESP.restart();
     }
 
     // Automatically connect using saved credentials,
@@ -107,45 +119,44 @@ void setup()
     // if empty will auto generate SSID, if password is blank it will be anonymous AP (wm.autoConnect())
     // then goes into a blocking loop awaiting configuration and will return success result
 
-    // res = wm.autoConnect(); // auto generated AP name from chipid
-    // res = wm.autoConnect("AutoConnectAP"); // anonymous ap
     lcd.clear();
     lcd.setCursor(0, 0);
-    lcd.print("Mode Config-AP");
+    lcd.print(F("Mode Config-AP"));
     lcd.setCursor(0, 1);
-    lcd.print("192.168.4.1");
+    lcd.print(F("192.168.4.1"));
 
     if (!wm.autoConnect(AP_SSID_CONFIG_NAME, AP_CONFIG_PASSWORD))
     {
-      Serial.println("Failed to connect");
-      lcd.print("Failed");
-      delay(2000);
+      DEBUG_MSG("Failed to connect\n");
+      lcd.print(F("Failed"));
+      delay(1000);
+      lcd.print(F("- restart"));
+      delay(1000);
       ESP.restart();
     }
     else {
       //if you get here you have connected to the WiFi
-      Serial.println("Connected");
+      DEBUG_MSG("Connected\n");
 
       if (!MDNS.begin(MDNS_NAME))
       {
-        Serial.println("Error setting up MDNS responder!");
+        DEBUG_MSG("Error setting up MDNS responder!\n");
       }
       else
       {
-        Serial.println("mDNS started.");
+        DEBUG_MSG("mDNS started.\n");
       }
     }
 
     lcd.clear();
     lcd.setCursor(0, 0);
-    lcd.print("Mode WiFi client");
+    lcd.print(F("Mode WiFi client"));
     lcd.setCursor(0, 1);
     lcd.print(WiFi.localIP());
   }
 
   udp.begin(UDP_RECV_PORT);
-  Serial.print("Listening for UDP packets on port ");
-  Serial.println(UDP_RECV_PORT);
+  DEBUG_MSG("Listening for UDP packets on port %d\n", UDP_RECV_PORT);
 
   midi1.begin(31250); // 16,17
   midi2.begin(31250, SWSERIAL_8N1, D5, D6, false, 95, 11);
@@ -154,6 +165,8 @@ void setup()
   MIDI1.begin(MIDI_CHANNEL_OMNI);
   MIDI1.setHandleControlChange(MidiCCToOSC);
   MIDI1.turnThruOff();
+
+  k_rate_last = millis();
 }
 
 void loop()
@@ -188,8 +201,7 @@ void loop()
     if (clientIP == tmpIP)
     {
       clientIP = tmpIP;
-      Serial.print("Connection from: ");
-      Serial.print(clientIP);
+      DEBUG_MSG("Connection from: %s", clientIP);
     }
   }
 
@@ -212,18 +224,24 @@ void loop()
   {
     while (midi2.available() > 0)
     {
-      Serial.print("MIDI-IN[2]: ");
-      Serial.println(midi2.peek(), DEC);
+      DEBUG_MSG("MIDI-IN[2]: %03d\n", midi2.peek());
       midi1.write(midi2.read());
     }
   }
 
   // Do something at control rate
-  if (k_rate_last < (millis() - K_RATE))
+  if ((millis() - K_RATE) > k_rate_last)
   {
+    k_rate_last = millis();
     if (ap_mode_state != digitalRead(AP_MODE_PIN))
+    {
+      lcd.clear();
+      lcd.setCursor(0, 0);
+      lcd.print("Changing mode...");
+      delay(500);
       ESP.restart();
     }
+  }
 }
 
 void OSCToMidiCC(OSCMessage & msg, int offset)

debug.h

@@ -1,7 +1,7 @@
 #ifndef DEBUG_H
 #define DEBUG_H
 
-#ifdef DEBUG
+#if defined(DEBUG) && DEBUG > 0
 
 #define DEBUG_ESP_PORT Serial
 #define DEBUG_MSG(...) Serial.printf( __VA_ARGS__ )
@@ -15,7 +15,7 @@
       if (msg.isFloat(i)) { Serial.printf("f:%f\t", msg.getFloat(i)); } \
       if (msg.isInt(i)) { Serial.printf("i:%d\t", msg.getInt(i)); } \
     } \
-    Serial.printf("\n"); \
+    Serial.print(F("\n")); \
   } while(0);
  
 #else