TransferCore.h

00001 // TransferCore.h 2013/9/14
00002 #pragma once
00003 #include "SWD.h"
00004 
00005 // DAP Transfer Request
00006 #define DAP_TRANSFER_MATCH_VALUE        (1<<4)
00007 #define DAP_TRANSFER_MATCH_MASK         (1<<5)
00008 
00009 // DAP Transfer Response
00010 #define DAP_TRANSFER_MISMATCH           (1<<4)
00011 
00012 template<typename T>
00013 T LD(uint8_t* buf) {
00014     T data = 0;
00015     for(int i = sizeof(T)-1; i >= 0; i--) {
00016         data <<= 8;
00017         data |= buf[i];
00018     }
00019     return data;
00020 }
00021 
00022 template<typename T>
00023 void ST(uint8_t* buf, T data) {
00024     for(int i = 0; i < sizeof(T); i++) {
00025         buf[i] = data>>(8*i);
00026     }
00027 }
00028 
00029 class transData {
00030 public:
00031     void init(uint8_t* base, int pos);
00032     void append(uint32_t data);
00033     uint8_t* data();
00034     int length();
00035 
00036     template<typename T>
00037     T get() {
00038         T data = LD<T>(_base+_pos);
00039         _pos += sizeof(T);
00040         return data;
00041     }
00042 protected:
00043     uint8_t* _base;
00044     int _pos;
00045 };
00046 
00047 class TransferCore {
00048 public:
00049     int Transfer(SWD* swd, uint8_t* request, uint8_t* response);
00050     int TransferBlock(SWD* swd, uint8_t* request, uint8_t* response);
00051     uint16_t  match_retry; // Number of retries if read value does not match
00052     uint32_t  match_mask;  // Match Mask
00053 private:
00054     uint8_t read(uint8_t cmd);
00055     uint8_t write(uint8_t cmd);
00056     uint8_t read_block(uint8_t cmd, int count);
00057     uint8_t write_block(uint8_t cmd, int count);
00058 
00059     bool post_read;
00060     bool check_write;
00061     transData reqData;  
00062     transData resData;
00063     int response_count;
00064 protected:
00065     SWD* _swd;
00066 };