AlohaFrame.h

00001 #ifndef ALOHAFRAME_H_
00002 #define ALOHAFRAME_H_
00003 
00004 #include <stdint.h>
00005 
00006 #define MAX_FRAME_SZ 20
00007 #define MAX_PAYLOAD_SZ 16
00008 #define FIXED_BYTE MAX_FRAME_SZ - MAX_PAYLOAD_SZ
00009 #define ALOHA_MAX_TYPE 16
00010 
00011 class AlohaFrame
00012 {
00013 private:
00014     uint8_t _buffer[MAX_FRAME_SZ];
00015 
00016     bool _isVerified;
00017     
00018 public:
00019     typedef enum 
00020     {
00021         Aloha_Join_Request = 0x0,
00022         Aloha_Join_Accepted,
00023         Aloha_Join_Denied,
00024         Aloha_Authentication,
00025         Aloha_Deauthentication,
00026         Aloha_RTS,
00027         Aloha_CTS,
00028         Aloha_Data,
00029         Aloha_ACK,
00030         Aloha_NACK,
00031     } AlohaType_t;
00032 
00033 public:
00034     AlohaFrame();
00035     AlohaFrame(uint8_t *data, uint8_t sz=MAX_PAYLOAD_SZ);
00036     ~AlohaFrame();
00037 
00038 public:
00039     void generateCrc();
00040 
00041     bool verify();
00042 
00043     uint8_t serialize(uint8_t *buffer);
00044 
00045 public:
00046     void setType(uint8_t type);
00047     void setPayloadLength(uint8_t length);
00048     void setSourceAddress(uint8_t sa);
00049     void setDestinationAddress(uint8_t da);
00050     void setFullMessageFlag(uint8_t fmf);
00051     void setSequenceID(uint8_t seqid);
00052     void setPayload(uint8_t idx, uint8_t payload);
00053 
00054     uint8_t getType();
00055     uint8_t getPayloadLength();
00056     uint8_t getSourceAddress();
00057     uint8_t getDestinationAddress();
00058     uint8_t getFullMessageFlag();
00059     uint8_t getSequenceID();
00060     uint8_t getPayload(uint8_t idx);
00061     uint8_t getCrc();
00062 
00063 #ifdef _DEBUG
00064 public:
00065     void unit_test();
00066 #endif
00067 };
00068 
00069 #endif