Add new packet recieve type: LED Blink Offset

src/LEDManager.cpp

@@ -72,8 +72,18 @@ namespace SlimeVR
         unsigned long time = millis();
         unsigned long diff = time - m_LastUpdate;
 
+        // Consider the offset if it is set
+        if (m_Offset > 0 && m_CurrentStage == OFF)
+        {
+            if (diff < m_Offset) {
+                // Wait until the offset has passed
+                return;
+            }
+
+            m_Offset = 0;
+        }
         // Don't tick the LEDManager *too* often
-        if (diff < 10)
+        else if (diff < 10)
         {
             return;
         }
@@ -209,4 +219,16 @@ namespace SlimeVR
             m_Timer += diff;
         }
     }
+
+    void LEDManager::resetPatternWithOffset(unsigned long offset)
+    {
+        // Turn off the LED
+        off();
+        // Reset the pattern state
+        m_CurrentStage = OFF;
+        // Reset the timer
+        m_Timer = 0;
+        // Set the offset
+        m_Offset = offset;
+    }
 }

src/LEDManager.h

@@ -86,13 +86,20 @@ namespace SlimeVR
          */
         void pattern(unsigned long timeon, unsigned long timeoff, int times);
 
+        /*!
+        *  @brief Resets the timer used for the blinking pattern and adds an offset to when the pattern starts
+        *  @param offset Offset in milliseconds
+        */
+        void resetPatternWithOffset(unsigned long offset);
+
         void update();
 
     private:
         uint8_t m_CurrentCount = 0;
         unsigned long m_Timer = 0;
         LEDStage m_CurrentStage = OFF;
         unsigned long m_LastUpdate = millis();
+        unsigned long m_Offset = 0;
 
         uint8_t m_Pin;
 

src/network/connection.cpp

@@ -689,7 +689,7 @@ void Connection::update() {
 
 			break;
 
-		case PACKET_FEATURE_FLAGS:
+		case PACKET_FEATURE_FLAGS: {
 			// Packet type (4) + Packet number (8) + flags (len - 12)
 			if (len < 13) {
 				m_Logger.warn("Invalid feature flags packet: too short");
@@ -710,6 +710,20 @@ void Connection::update() {
 			}
 
 			break;
+        }
+
+		case PACKET_RECEIVE_LED_OFFSET: {
+			// Packet type (4) + Packet number (8) + offset in ms (4)
+			if (len < 16) {
+				m_Logger.warn("Invalid LED offset packet: too short");
+				break;
+			}
+
+			uint32_t offset = convert_chars<uint32_t>(&m_Packet[12]);
+			ledManager.resetPatternWithOffset(offset);
+			break;
+        }
+
 	}
 }
 

src/network/packets.h

@@ -56,6 +56,7 @@
 #define PACKET_RECEIVE_VIBRATE 2
 #define PACKET_RECEIVE_HANDSHAKE 3
 #define PACKET_RECEIVE_COMMAND 4
+#define PACKET_RECEIVE_LED_OFFSET 23
 
 #define PACKET_INSPECTION_PACKETTYPE_RAW_IMU_DATA 1
 #define PACKET_INSPECTION_PACKETTYPE_FUSED_IMU_DATA 2