Initial working example

client/platformio.ini

@@ -25,3 +25,6 @@ lib_deps =
 monitor_filters =
     esp32_exception_decoder
     time ; add timestamp with milliseconds for each new line
+
+upload_port = /dev/ttyACM1
+monitor_port = /dev/ttyACM1

client/src/main.cpp

@@ -9,10 +9,14 @@
 #define HOST "192.168.4.1"
 #define PORT 1234
 
-#define BUTTON_PIN 2
+#define POWER_BUTTON_PIN 2
+#define RESET_BUTTON_PIN 3
 
 WiFiClient client;
 
+int previousPowerButtonState = HIGH;
+int previousResetButtonState = HIGH;
+
 void ack();
 
 void setup()
@@ -20,7 +24,8 @@ void setup()
 	Serial.begin(9600);
 	Serial.setDebugOutput(true);
 
-	pinMode(BUTTON_PIN, INPUT_PULLUP);
+	pinMode(POWER_BUTTON_PIN, INPUT_PULLUP);
+	pinMode(RESET_BUTTON_PIN, INPUT_PULLUP);
 
 	// Wait for a USB connection to be established
 	while (!Serial)
@@ -40,33 +45,52 @@ void setup()
 
 void loop()
 {
-	delay(25);
-	Serial.println("ESP32 loopy!");
+	delay(20);
 
-	int buttonState = digitalRead(BUTTON_PIN);
-	if (buttonState == LOW) {
-		Serial.println("Button pressed!");
+	int powerButtonState = digitalRead(POWER_BUTTON_PIN);
+	int resetButtonState = digitalRead(RESET_BUTTON_PIN);
+
+	// Unsupported usecase
+	if (powerButtonState == LOW && resetButtonState == LOW) {
+		previousPowerButtonState = HIGH;
+		previousResetButtonState = HIGH;
+		if (client.connected()) {
+			client.stop();
+		}
+		return;
+	}
+
+	bool isButtonPressed = (previousPowerButtonState == LOW && powerButtonState == LOW)
+	                       || (previousResetButtonState == LOW && resetButtonState == LOW);
+	previousPowerButtonState = powerButtonState;
+	previousResetButtonState = resetButtonState;
+
+	if (isButtonPressed) {
+		String button = (powerButtonState == LOW) ? "power" : "reset";
+
+		Serial.println("Pressed " + button + " button!");
 
 		if (!client.connected() && !client.connect(HOST, PORT)) {
 			Serial.println("Connection failed");
 			return;
 		}
 
-		client.print("button_pressed\n");
-		Serial.println("Sent button press");
+		client.print(button + "_pressed\n");
+		Serial.println("Sent " + button + " button press");
 
 		ack();
 	}
 	else {
-		Serial.println("Button not pressed!");
-
 		if (!client.connected()) {
 			return;
 		}
 
-		client.print("button_released\n");
-		Serial.println("Sent button release");
+		client.print("power_released\n");
+		Serial.println("Sent power button release");
+		ack();
 
+		client.print("reset_released\n");
+		Serial.println("Sent reset button release");
 		ack();
 
 		client.stop();

server/platformio.ini

@@ -25,3 +25,6 @@ lib_deps =
 monitor_filters =
     esp32_exception_decoder
     time ; add timestamp with milliseconds for each new line
+
+upload_port = /dev/ttyACM0
+monitor_port = /dev/ttyACM0

server/src/main.cpp

@@ -12,16 +12,25 @@
 #define HIDDEN true
 #define MAX_CONNECTION 1
 
-#define SWITCH_PIN 2
+#define POWER_PIN 2
+#define RESET_PIN 3
 
 WiFiServer server(PORT);
 
+bool powerPressed = false;
+bool resetPressed = false;
+
+void processButtons();
+void setPowerPin(bool enable);
+void setResetPin(bool enable);
+
 void setup()
 {
 	Serial.begin(9600);
 	Serial.setDebugOutput(true);
 
-	pinMode(SWITCH_PIN, OUTPUT);
+	pinMode(POWER_PIN, OUTPUT);
+	pinMode(RESET_PIN, OUTPUT);
 
 	// Wait for a USB connection to be established
 	while (!Serial)
@@ -37,40 +46,75 @@ void setup()
 
 void loop()
 {
-	digitalWrite(2, HIGH);
-	delay(500);
-	digitalWrite(2, LOW);
-	delay(500);
-
-	Serial.println("ESP32 loopy!");
-
-	// -------------------------------------
-
 	WiFiClient client = server.available();
 	if (client) {
 		Serial.println("Client connected");
 
-		// unsigned long start = 0;
+		unsigned long start = 0;
 		while (client.connected()) {
 			if (client.available()) {
 				String msg = client.readStringUntil('\n');
 				Serial.print("Received: ");
 				Serial.println(msg);
 
-				// Do something with the message, like toggling an LED
+				if (msg == "power_pressed") {
+					powerPressed = true;
+				}
+				else if (msg == "power_released") {
+					powerPressed = false;
+				}
+				else if (msg == "reset_pressed") {
+					resetPressed = true;
+				}
+				else if (msg == "reset_released") {
+					resetPressed = false;
+				}
 
 				client.print("ACK\n");
 				Serial.println("Sent ACK");
-				// start = millis();
+				start = millis();
 			}
 
-			// // Kill lingering connections
-			// if (start != 0 && millis() - start < 1000) {
-			// 	Serial.println("Client kill..");
-			// 	break;
-			// }
+			// Kill lingering connections
+			if (start != 0 && millis() - start > 200) {
+				Serial.println("Client kill..");
+				break;
+			}
+
+			processButtons();
 		}
+
+		setPowerPin(false);
+		setResetPin(false);
+
 		client.stop();
 		Serial.println("Client disconnected");
 	}
 }
+
+// -----------------------------------------
+
+void processButtons()
+{
+	if (powerPressed && resetPressed) {
+		Serial.println("Double input..");
+		setPowerPin(false);
+		setResetPin(false);
+		return;
+	}
+
+	setPowerPin(powerPressed);
+	setResetPin(resetPressed);
+}
+
+void setPowerPin(bool enable)
+{
+	powerPressed = enable;
+	digitalWrite(POWER_PIN, (enable) ? HIGH : LOW);
+}
+
+void setResetPin(bool enable)
+{
+	resetPressed = enable;
+	digitalWrite(RESET_PIN, (enable) ? HIGH : LOW);
+}