Added OTA logic - enable with homeSpan.enableOTA();

TO DO:  Add password for OTA (and require it)

src/HomeSpan.cpp

@@ -29,6 +29,7 @@
 #include <nvs_flash.h>
 #include <sodium.h>
 #include <WiFi.h>
+#include <ArduinoOTA.h>
 
 #include "HomeSpan.h"
 #include "HAP.h"
@@ -207,6 +208,9 @@ void Span::poll() {
   HAPClient::checkNotifications();  
   HAPClient::checkTimedWrites();
 
+  if(otaEnabled)
+    ArduinoOTA.handle();
+
   if(controlButton.primed()){
     statusLED.start(LED_ALERT);
   }
@@ -425,9 +429,48 @@ void Span::checkConnect(){
 
   Serial.print("\nStarting Web (HTTP) Server supporting up to ");
   Serial.print(maxConnections);
-  Serial.print(" simultaneous connections...\n\n");
+  Serial.print(" simultaneous connections...\n");
   hapServer->begin();
 
+  if(otaEnabled){
+    ArduinoOTA.setHostname(hostName);
+
+    ArduinoOTA
+      .onStart([]() {
+        String type;
+        if (ArduinoOTA.getCommand() == U_FLASH)
+          type = "sketch";
+        else // U_SPIFFS
+          type = "filesystem";
+        Serial.println("\n*** OTA Starting:" + type);
+        homeSpan.statusLED.start(LED_OTA_STARTED);
+      })
+      .onEnd([]() {
+        Serial.println("\n*** OTA Completed.  Rebooting...");
+        homeSpan.statusLED.off();
+      })
+      .onProgress([](unsigned int progress, unsigned int total) {
+        Serial.printf("*** Progress: %u%%\r", (progress / (total / 100)));
+      })
+      .onError([](ota_error_t error) {
+        Serial.printf("*** OTA Error[%u]: ", error);
+        if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed\n");
+        else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed\n");
+        else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed\n");
+        else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed\n");
+        else if (error == OTA_END_ERROR) Serial.println("End Failed\n");
+      });    
+    
+    ArduinoOTA.begin();
+    Serial.print("Starting OTA: ");
+    Serial.print(displayName);
+    Serial.print(" at ");
+    Serial.print(WiFi.localIP());
+    Serial.print("\n");
+  }
+
+  Serial.print("\n");
+
   if(!HAPClient::nAdminControllers()){
     Serial.print("DEVICE NOT YET PAIRED -- PLEASE PAIR WITH HOMEKIT APP\n\n");
     statusLED.start(LED_PAIRING_NEEDED);

src/HomeSpan.h

@@ -100,6 +100,7 @@ struct Span{
   unsigned long comModeLife=DEFAULT_COMMAND_TIMEOUT*1000;     // length of time (in milliseconds) to keep Command Mode alive before resuming normal operations
   uint16_t tcpPortNum=DEFAULT_TCP_PORT;                       // port for TCP communications between HomeKit and HomeSpan
   char qrID[5]="";                                            // Setup ID used for pairing with QR Code
+  boolean otaEnabled=false;                                   // enables Over-the-Air updates
 
   WiFiServer *hapServer;                            // pointer to the HAP Server connection
   Blinker statusLED;                                // indicates HomeSpan status
@@ -150,6 +151,7 @@ struct Span{
   void setHostNameSuffix(const char *suffix){hostNameSuffix=suffix;}      // sets the hostName suffix to be used instead of the 6-byte AccessoryID
   void setPortNum(uint16_t port){tcpPortNum=port;}                        // sets the TCP port number to use for communications between HomeKit and HomeSpan
   void setQRID(const char *id);                                           // sets the Setup ID for optional pairing with a QR Code
+  void enableOTA(){otaEnabled=true;}                                      // enables Over-the-Air updates
 };
 
 ///////////////////////////////

src/Settings.h

@@ -87,6 +87,7 @@
 #define     LED_WIFI_CONNECTING   2000                // slow flashing
 #define     LED_AP_STARTED        100,0.5,2,300       // rapid double-blink
 #define     LED_AP_CONNECTED      300,0.5,2,400       // medium double-blink     
+#define     LED_OTA_STARTED       300,0.5,5,500       // rapid 5-blink
 
 /////////////////////////////////////////////////////
 //      Message Log Level Control Macros           //

src/src.ino

@@ -10,9 +10,11 @@ void setup() {
  
   homeSpan.setLogLevel(2);
   
-  homeSpan.setHostNameSuffix("");
+//  homeSpan.setHostNameSuffix("");
   homeSpan.setPortNum(1200);
+  homeSpan.setMaxConnections(16);
 //  homeSpan.setQRID("One1");
+  homeSpan.enableOTA();
 
   homeSpan.begin(Category::Lighting,"HomeSpanTest");