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/* Monitor JTAG signals instead of using physical cable
Copyright (C) 2004 Andrew Rogers
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 */
#include <stdio.h>
#include "iodebug.h"
using namespace std;
bool IODebug::txrx(bool tms, bool tdi)
{
int tdo;
fprintf(stderr, "txrx(%d,%d) enter tdo>",tms,tdi);
scanf("%d",&tdo);
return tdo!=0;
}
void IODebug::tx(bool tms, bool tdi)
{
fprintf(stderr, "tx(%d,%d)\n",tms,tdi);
}
void IODebug::tx_tdi_byte(unsigned char tdi_byte) {
}
void IODebug::txrx_block(const unsigned char *tdi, unsigned char *tdo,
int length, bool last)
{
int i=0;
int j=0;
unsigned char tdo_byte=0;
unsigned char tdi_byte=tdi[j];
while(i<length-1){
tdo_byte=tdo_byte+(txrx(false, (tdi_byte&1)==1)<<(i%8));
tdi_byte=tdi_byte>>1;
i++;
if((i%8)==0){ // Next byte
tdo[j]=tdo_byte; // Save the TDO byte
tdo_byte=0;
j++;
tdi_byte=tdi[j]; // Get the next TDI byte
}
};
tdo_byte=tdo_byte+(txrx(last, (tdi_byte&1)==1)<<(i%8));
tdo[j]=tdo_byte;
return;
}
void IODebug::tx_tms(unsigned char *pat, int length, int force)
{
int i;
unsigned char tms = pat[0];
for (i = 0; i < length; i++)
{
tx((tms & 0x01),false);
tms = tms >> 1;
}
}
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