armsrc/BigBuf.h

   1 //-----------------------------------------------------------------------------
   2 // Jonathan Westhues, Aug 2005
   3 // Gerhard de Koning Gans, April 2008, May 2011
   4 //
   5 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   6 // at your option, any later version. See the LICENSE.txt file for the text of
   7 // the license.
   8 //-----------------------------------------------------------------------------
   9 // BigBuf and functions to allocate/free parts of it.
  10 //-----------------------------------------------------------------------------
  11
  12 #ifndef __BIGBUF_H
  13 #define __BIGBUF_H
  14
  15 #include "common.h"
  16
  17 #define MAX_FRAME_SIZE          256 // maximum allowed ISO14443 frame
  18 #define MAX_PARITY_SIZE         ((MAX_FRAME_SIZE + 7) / 8)
  19 #define MAX_MIFARE_FRAME_SIZE   18  // biggest Mifare frame is answer to a read (one block = 16 Bytes) + 2 Bytes CRC
  20 #define MAX_MIFARE_PARITY_SIZE  3   // need 18 parity bits for the 18 Byte above. 3 Bytes are enough to store these
  21 #define CARD_MEMORY_SIZE        4096
  22 #define DMA_BUFFER_SIZE         512
  23
  24 // 8 data bits and 1 parity bit per payload byte, 1 correction bit, 1 SOC bit, 2 EOC bits
  25 #define TOSEND_BUFFER_SIZE (9 * MAX_FRAME_SIZE + 1 + 1 + 2)
  26
  27 uint8_t *BigBuf_get_addr(void);
  28 uint32_t BigBuf_get_size(void);
  29 uint8_t *BigBuf_get_EM_addr(void);
  30 uint16_t BigBuf_max_traceLen(void);
  31 void BigBuf_initialize(void);
  32 void BigBuf_Clear(void);
  33 void BigBuf_Clear_ext(bool verbose);
  34 void BigBuf_Clear_keep_EM(void);
  35 void BigBuf_Clear_EM(void);
  36 uint8_t *BigBuf_malloc(uint16_t);
  37 uint8_t *BigBuf_calloc(uint16_t);
  38 void BigBuf_free(void);
  39 void BigBuf_free_keep_EM(void);
  40 void BigBuf_print_status(void);
  41 uint32_t BigBuf_get_traceLen(void);
  42 void clear_trace(void);
  43 void set_tracing(bool enable);
  44 void set_tracelen(uint32_t value);
  45 bool get_tracing(void);
  46
  47 bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag);
  48 bool LogTrace_ISO15693(const uint8_t *bytes, uint16_t len, uint32_t ts_start, uint32_t ts_end, uint8_t *parity, bool reader2tag);
  49
  50 uint8_t emlSet(uint8_t *data, uint32_t offset, uint32_t length);
  51
  52 typedef struct {
  53     int max;
  54     int bit;
  55     uint8_t *buf;
  56 } tosend_t;
  57
  58 tosend_t *get_tosend(void);
  59 void tosend_reset(void);
  60 void tosend_stuffbit(int b);
  61
  62 typedef struct {
  63     uint16_t size;
  64     uint8_t *buf;
  65 } dmabuf8_t;
  66
  67 typedef struct {
  68     uint16_t size;
  69     uint16_t *buf;
  70 } dmabuf16_t;
  71
  72 dmabuf8_t *get_dma8(void);
  73 dmabuf16_t *get_dma16(void);
  74 #endif /* __BIGBUF_H */