FragmentationSession.h

00001 #ifndef _FRAGMENTATION_SESSION_H
00002 #define _FRAGMENTATION_SESSION_H
00003 #ifdef FOTA
00004 
00005 #include "mbed.h"
00006 #include "FragmentationMath.h"
00007 #include "mDot.h"
00008 #include "WriteFile.h"
00009 
00010 #define MAX_PARITY 300
00011 #define FRAG_OFFSET 3
00012 #define MULTICAST_SESSIONS 3
00013 
00014 class FragmentationSession {
00015 
00016     public:
00017         FragmentationSession(mDot* dot, std::vector<uint8_t>* ret, bool* filled, uint32_t* delay);
00018         ~FragmentationSession();
00019         void processCmd(uint8_t* payload, uint8_t size);
00020         void reset();
00021 
00022     private:
00023 
00024         typedef struct {
00025             uint8_t  Padding;
00026             uint8_t  FragmentSize;
00027             uint16_t NumberOfFragments;
00028         } FragmentationSessionOpts_t;
00029 
00030         typedef struct {
00031             bool reset;
00032             bool failed;
00033             uint8_t fragMatrix;
00034             uint8_t blockAckDelay;
00035             uint8_t total_sessions;
00036             uint8_t mcGroupBitMask;
00037             uint8_t current_session;
00038             uint16_t index;
00039             uint16_t last_frag_num;
00040             uint32_t total_frags;
00041             FragmentationMath* math;
00042             FragmentationSessionOpts_t opts;
00043         } fragGroup;
00044 
00045 
00046         enum FragResult {
00047             FRAG_OK,
00048             FRAG_SIZE_INCORRECT,
00049             FRAG_FLASH_WRITE_ERROR,
00050             FRAG_NO_MEMORY,
00051             FRAG_COMPLETE
00052         };
00053 
00054         enum FragCmd {
00055             PACKAGE_VERSION_FRAG,
00056             FRAG_STATUS,
00057             FRAG_SESSION_SETUP,
00058             FRAG_SESSION_DELETE,
00059             DATA_FRAGMENT = 0x08,
00060             CHECKSUM = 0x80
00061         };
00062 
00063         void reset(uint16_t num);
00064         void upgradeFile(uint8_t fragIndex);
00065         bool process_frame(uint8_t fragIndex,uint16_t index, uint8_t buffer[], size_t size);
00066 
00067         mDot* _dot;
00068         WriteFile* _fh;
00069         fragGroup fg[MULTICAST_SESSIONS];
00070 
00071         uint8_t ans;
00072         bool* _filled;
00073         uint32_t* _delay;
00074         uint8_t fragIndex;
00075         std::vector<uint8_t>* _ret;
00076         std::string _org_class;
00077 };
00078 #endif
00079 #endif // _FRAGMENTATION_SESSION_H