added OTA support for deploying without USB cable

ESP32/platformio.ini

@@ -13,3 +13,5 @@ platform = espressif32
 board = nodemcu-32s
 framework = arduino
 monitor_speed = 115200
+upload_protocol = espota
+upload_port = 192.168.1.166

ESP32/src/OTA.cpp

@@ -0,0 +1,65 @@
+#include "OTA.h"
+
+#include <ArduinoOTA.h>
+
+detail::OTA OTA;
+
+namespace detail
+{
+	OTA::OTA()
+	{
+	}
+	
+	OTA::~OTA()
+	{
+	}
+	
+	void OTA::begin()
+	{
+		// Port defaults to 3232
+		// ArduinoOTA.setPort(3232);
+		
+		// Hostname defaults to esp3232-[MAC]
+		// ArduinoOTA.setHostname("myesp32");
+		
+		// No authentication by default
+		// ArduinoOTA.setPassword("admin");
+		
+		// Password can be set with it's md5 value as well
+		// MD5(admin) = 21232f297a57a5a743894a0e4a801fc3
+		// ArduinoOTA.setPasswordHash("21232f297a57a5a743894a0e4a801fc3");
+		
+		ArduinoOTA
+		    .onStart([]() {
+		      String type;
+		      if (ArduinoOTA.getCommand() == U_FLASH)
+		        type = "sketch";
+		      else // U_SPIFFS
+		        type = "filesystem";
+		
+		      // NOTE: if updating SPIFFS this would be the place to unmount SPIFFS using SPIFFS.end()
+		      Serial.println("Start updating " + type);
+		    })
+		    .onEnd([]() {
+		      Serial.println("\nEnd");
+		    })
+		    .onProgress([](unsigned int progress, unsigned int total) {
+		      Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
+		    })
+		    .onError([](ota_error_t error) {
+		      Serial.printf("Error[%u]: ", error);
+		      if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed");
+		      else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed");
+		      else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed");
+		      else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed");
+		      else if (error == OTA_END_ERROR) Serial.println("End Failed");
+		    });
+		
+		ArduinoOTA.begin();
+	}
+	
+	void OTA::handle()
+	{
+		ArduinoOTA.handle();
+	}
+}

ESP32/src/OTA.h

@@ -0,0 +1,14 @@
+namespace detail
+{
+	class OTA
+	{
+	public:
+		OTA();
+		~OTA();
+		
+		void begin();
+		void handle();
+	};
+}
+
+extern detail::OTA OTA;

ESP32/src/vehicle-monitor.cpp

@@ -8,6 +8,7 @@
 #include <ESPAsyncWebServer.h>
 
 #include "ADC.h"
+#include "OTA.h"
 
 #include "wifi-credentials.h"
 
@@ -138,6 +139,8 @@ void setup()
 
 	// Also connect as a station (if the configured remote access point is in range)
 	connectWifi();
+	
+	OTA.begin();
 
 	server.on("/api/status", HTTP_GET, [](AsyncWebServerRequest *request){
 		int v = batteryVoltage;
@@ -162,6 +165,8 @@ void setup()
 
 void loop()
 {
+	OTA.handle();
+
 	wl_status_t newWifiStatus = WiFi.status();
 	if(newWifiStatus != wifi_STA_status)
 	{