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/* JTAG low level functions and base class for cables
Copyright (C) 2004 Andrew Rogers
Additions (C) 2005-2013 Uwe Bonnes
bon@elektron.ikp.physik.tu-darmstadt.de
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Changes:
Dmitry Teytelman [dimtey@gmail.com] 14 Jun 2006 [applied 13 Aug 2006]:
Code cleanup for clean -Wall compile.
Extensive changes to support FT2232 driver.
*/
#ifndef IOBASE_H
#define IOBASE_H
#define BLOCK_SIZE 65536
#define CHUNK_SIZE 128
#define TICK_COUNT 2048
#include "cabledb.h"
class IOBase
{
protected:
bool verbose;
unsigned char ones[CHUNK_SIZE], zeros[CHUNK_SIZE];
unsigned char tms_buf[CHUNK_SIZE];
unsigned int tms_len; /* in Bits*/
protected:
IOBase();
public:
virtual ~IOBase() {}
public:
virtual int Init(struct cable_t *cable, const char *devopt, unsigned int freq);
virtual void flush() {}
virtual void Usleep(unsigned int usec);
public:
void setVerbose(bool v) { verbose = v; }
void shiftTDITDO(const unsigned char *tdi, unsigned char *tdo, int length, bool last=true);
void shiftTDI(const unsigned char *tdi, int length, bool last=true);
void shiftTDO(unsigned char *tdo, int length, bool last=true);
void shift(bool tdi, int length, bool last=true);
void set_tms(bool value);
void flush_tms(int force);
protected:
virtual void txrx_block(const unsigned char *tdi, unsigned char *tdo, int length, bool last)=0;
virtual void tx_tms(unsigned char *pat, int length, int force)=0;
virtual void settype(int subtype) {}
private:
void nextTapState(bool tms);
};
#endif // IOBASE_H
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