handle receiving and distributing on NMEA messages

lib/serial/GwSerial.h

@@ -7,19 +7,24 @@ class SerialWriter;
 class GwSerial{
     private:
         GwBuffer *buffer;
-        GwBuffer *readBuffer;
+        GwBuffer *readBuffer=NULL;
         GwLog *logger; 
         SerialWriter *writer;
         uart_port_t num;
         bool initialized=false;
+        bool allowRead=true;
+        GwBuffer::WriteStatus write();
+        int id=-1;
+        int overflows=0;
+        size_t enqueue(const uint8_t *data, size_t len);
     public:
         static const int bufferSize=200;
-        GwSerial(GwLog *logger,uart_port_t num);
+        GwSerial(GwLog *logger,uart_port_t num,int id,bool allowRead=true);
         ~GwSerial();
         int setup(int baud,int rxpin,int txpin);
         bool isInitialized();
-        size_t enqueue(const uint8_t *data, size_t len);
-        GwBuffer::WriteStatus write();
-        const char *read();
+        void sendToClients(const char *buf,int sourceId);
+        void loop(bool handleRead=true);
+        bool readMessages(GwBufferWriter *writer);
 };
 #endif