2004-08-20 Marcel Telka <marcel@telka.sk>
* src/tap/Makefile.am (libtap_a_SOURCES): Added cable/lattice.c. * src/tap/cable.c (cable_drivers): Added lattice_cable_driver (patch 1012138, Jerome Debard). * src/tap/cable/lattice.c: New file (patch 1012138, Jerome Debard). git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@609 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Marcel Telka
21 years ago
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/*
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* $Id$
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*
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* Lattice Parallel Port Download Cable Driver
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* Copyright (C) 2002, 2003 ETC s.r.o.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by Marcel Telka <marcel@telka.sk>, 2002, 2003.
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*
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*/
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#include "sysdep.h"
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#include "cable.h"
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#include "parport.h"
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#include "chain.h"
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#include "generic.h"
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/*
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* 0 - STROBE (pin 1)
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* 1 - AUTOFD (pin 14)
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* 2 - INIT (pin 16)
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* 3 - SELECT (pin 17)
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* data D[7:0] (pins 9:2)
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* 7 - BUSY (pin 11)
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* 6 - ACK (pin 10)
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* 5 - PE (pin 12)
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* 4 - SEL (pin 13)
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* 3 - ERROR (pin 15)
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*/
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#define TDI 0
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#define TCK 1
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#define TMS 2
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#define TRST 4
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#define TDO 6
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static int
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lattice_init( cable_t *cable )
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{
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if (parport_open( cable->port ))
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return -1;
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PARAM_TRST(cable) = 1;
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return 0;
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}
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static void
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lattice_clock( cable_t *cable, int tms, int tdi )
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{
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tms = tms ? 1 : 0;
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tdi = tdi ? 1 : 0;
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parport_set_data( cable->port, (0 << TCK) | (tms << TMS) | (tdi << TDI) | (1 << TRST) );
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cable_wait();
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parport_set_data( cable->port, (1 << TCK) | (tms << TMS) | (tdi << TDI) | (1 << TRST) );
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cable_wait();
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}
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static int
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lattice_get_tdo( cable_t *cable )
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{
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parport_set_data( cable->port, (0 << TCK) | (1 << TRST) );
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cable_wait();
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return (parport_get_status( cable->port ) >> TDO) & 1;
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}
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static int
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lattice_set_trst( cable_t *cable, int trst )
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{
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return parport_set_data( cable->port, trst << TRST );
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}
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cable_driver_t lattice_cable_driver = {
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"Lattice",
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N_("Lattice Parallel Port JTAG Cable"),
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generic_connect,
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generic_disconnect,
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generic_cable_free,
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lattice_init,
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generic_done,
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lattice_clock,
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lattice_get_tdo,
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lattice_set_trst,
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generic_get_trst
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};
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