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/* JTAG low level functions and base class for cables
Copyright (C) 2004 Andrew Rogers
Additions (C) 2005-2011 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:
Sandro Amato [sdroamt@netscape.net] 26 Jun 2006 [applied 13 Jul 2006]:
Added a 'dotted' progress bar
Dmitry Teytelman [dimtey@gmail.com] 14 Jun 2006 [applied 13 Aug 2006]:
Code cleanup for clean -Wall compile.
Extensive changes to support FT2232 driver.
Moved progress bar to ioparport.cpp and ioftdi.cpp.
*/
#include "iobase.h"
#include "utilities.h"
#include <unistd.h>
#include <stdio.h>
#include <string.h>
using namespace std;
IOBase::IOBase()
{
verbose = false;
memset( ones,0xff,CHUNK_SIZE);
memset(zeros, 0,CHUNK_SIZE);
memset(tms_buf, 0,CHUNK_SIZE);
tms_len = 0;
}
int IOBase::Init(struct cable_t *cable, const char *devopt, unsigned int freq)
{
return 0;
}
void IOBase::flush_tms(int force)
{
if (tms_len)
tx_tms(tms_buf, tms_len, force);
memset(tms_buf, 0,CHUNK_SIZE);
tms_len = 0;
}
void IOBase::set_tms(bool val)
{
if( tms_len + 1 > CHUNK_SIZE*8)
flush_tms(false);
if(val)
tms_buf[tms_len/8] |= (1 <<(tms_len &0x7));
tms_len++;
}
void IOBase::shiftTDITDO(const unsigned char *tdi, unsigned char *tdo,
int length, bool last)
{
if(length==0) return;
flush_tms(false);
txrx_block(tdi, tdo, length,last);
return;
}
void IOBase::shiftTDI(const unsigned char *tdi, int length, bool last)
{
shiftTDITDO(tdi, NULL, length,last);
}
// TDI gets a load of zeros, we just record TDO.
void IOBase::shiftTDO(unsigned char *tdo, int length, bool last)
{
shiftTDITDO(NULL, tdo, length,last);
}
// TDI gets a load of zeros or ones, and we ignore TDO
void IOBase::shift(bool tdi, int length, bool last)
{
int len = length;
unsigned char *block = (tdi)?ones:zeros;
flush_tms(false);
while (len > CHUNK_SIZE*8)
{
txrx_block(block, NULL, CHUNK_SIZE*8, false);
len -= (CHUNK_SIZE*8);
}
shiftTDITDO(block, NULL, len, last);
}
void IOBase::Usleep(unsigned int usec)
{
flush_tms(false);
flush();
xc3sprog_Usleep(usec);
}
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