error message transmission now happens via uarthandler

UartHandler.hpp

@@ -7,7 +7,7 @@
 class UartHandler
 {
     public:
-        static UartHandler& getInstance();
+        static UartHandler& getInstance() noexcept;
 
         // Will attempt to initialize the serial port, returns status.
         // May block up to 1000ms.
@@ -15,14 +15,17 @@ class UartHandler
 
         void close();
 
-        void poll();
+        void poll() noexcept;
         // Will write the next available whole line into char* (provide at least 16 bytes!)
         // Returns whether any data was written.
         // If data available is longer than 16 bytes, an error will be raised.
-        bool getNextPacket(char* dest);
+        bool getNextPacket(char* dest) noexcept;
+
+        size_t send(const char* buf, size_t nbytes);
+        size_t send(const String& str);
 
         // Returns how many packets are ready for reading
-        uint8_t getNumAvailablePackets() const;
+        uint8_t getNumAvailablePackets() const noexcept;
 
         bool isOpen() const noexcept;