hi,
the attached patch makes srst controllable with "pod reset=" on
wiggler2[1] (which is actually the whole point of wiggler2 in the
first place and is a very nice feature to have).
tested with a k9jtag[2], which, at least in the srst-controlling
regard is for all intents and purposes identical to wiggler2.
direct links to schematics:
http://web.archive.org/web/20110708075327/http://www.k9spud.com//jtag/schematic-1.0.php
http://www.ccac.rwth-aachen.de/~michaels/files/armjtag/wiggler2.pdf
please consider applying.
thanks,
[1]: http://www.ccac.rwth-aachen.de/~michaels/index.php/hardware/armjtag
[2]: http://web.archive.org/web/20110708074737/http://www.k9spud.com/jtag/
--
[-]
mkdir /nonexistent
From 0b7acaa90fc2b7b56dca4764f2fb0692a6ca2eed Mon Sep 17 00:00:00 2001
From: Tamas TEVESZ <i...@extreme.hu>
Date: Wed, 12 Sep 2012 13:11:19 +0200
Subject: [PATCH] Wiggler2: make SRST# controllable with "pod reset".
---
urjtag/src/tap/cable/wiggler2.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/urjtag/src/tap/cable/wiggler2.c b/urjtag/src/tap/cable/wiggler2.c
index ea2871b..26704e4 100644
--- a/urjtag/src/tap/cable/wiggler2.c
+++ b/urjtag/src/tap/cable/wiggler2.c
@@ -22,10 +22,11 @@
* Written by Marcel Telka <mar...@telka.sk>, 2002, 2003.
*
* Documentation:
- * [1] http://www.ocdemon.net/
- * [2] http://jtag-arm9.sourceforge.net/hardware.html
+ * [1] http://www.ccac.rwth-aachen.de/~michaels/index.php/hardware/armjtag
+ * [2] http://www.ocdemon.net/
+ * [3] http://jtag-arm9.sourceforge.net/hardware.html
*
- * Base on the code for the Macraigor WIGGLER code written by Marcel Telka.
+ * Based on the code for the Macraigor WIGGLER code written by Marcel Telka.
* Modified by Matej Kupljen <matej.kupl...@ultra.si> to support
* the Modified WIGGLER JTAG cable. This has an additional pin, that is
* used for CPU reset. The schematic is based on the source code for the
@@ -73,9 +74,6 @@ wiggler2_init (urj_cable_t *cable)
if (urj_tap_parport_open (cable->link.port) != URJ_STATUS_OK)
return URJ_STATUS_FAIL;
- // TODO: CPU_RESET bit is set to zero here and can't be changed afterwards
- // If CPU_RESET=0 doesn't harm, it means it is an active high signal? - kawk
-
if ((data = urj_tap_parport_get_data (cable->link.port)) < 0)
{
if (urj_tap_parport_set_data (cable->link.port,
@@ -142,7 +140,9 @@ wiggler2_set_signal (urj_cable_t *cable, int mask, int val)
{
int prev_sigs = PARAM_SIGNALS (cable);
- mask &= (URJ_POD_CS_TDI | URJ_POD_CS_TCK | URJ_POD_CS_TMS | URJ_POD_CS_TRST); // only these can be modified
+ /* Only these can be modified */
+ mask &= (URJ_POD_CS_TDI | URJ_POD_CS_TCK | URJ_POD_CS_TMS |
+ URJ_POD_CS_TRST | URJ_POD_CS_RESET);
if (mask != 0)
{
@@ -152,6 +152,7 @@ wiggler2_set_signal (urj_cable_t *cable, int mask, int val)
data |= (sigs & URJ_POD_CS_TCK) ? (1 << TCK) : 0;
data |= (sigs & URJ_POD_CS_TMS) ? (1 << TMS) : 0;
data |= (sigs & URJ_POD_CS_TRST) ? (1 << TRST) : 0;
+ data |= (sigs & URJ_POD_CS_RESET) ? (1 << CPU_RESET) : 0;
urj_tap_parport_set_data (cable->link.port, data | UNUSED_BITS);
PARAM_SIGNALS (cable) = sigs;
}
--
1.7.9.5
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