From 779c44125a8804dabb40f59b068b55a9ac810096 Mon Sep 17 00:00:00 2001
From: oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Wed, 22 Apr 2009 13:54:04 +0000
Subject: Zach Welch <zw@superlucidity.net> do not pad TMS
git-svn-id: svn://svn.berlios.de/openocd/trunk@1509 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
src/jtag/jlink.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
(limited to 'src')
diff --git a/src/jtag/jlink.c b/src/jtag/jlink.c
index f16be361..a229cec5 100644
--- a/src/jtag/jlink.c
+++ b/src/jtag/jlink.c
@@ -623,6 +623,10 @@ static void jlink_tap_append_step(int tms, int tdi)
int bit_index = tap_length % 8;
u8 bit = 1 << bit_index;
+ // we do not pad TMS, so be sure to initialize all bits
+ if (0 == bit_index)
+ tms_buffer[index] = tdi_buffer[index] = 0;
+
if (tms)
tms_buffer[index] |= bit;
else
@@ -669,15 +673,8 @@ static int jlink_tap_execute(void)
if (!tap_length)
return ERROR_OK;
- /* Pad last byte so that tap_length is divisible by 8 */
- while (tap_length % 8 != 0)
- {
- /* More of the last TMS value keeps us in the same state,
- * analogous to free-running JTAG interfaces. */
- jlink_tap_append_step(last_tms, 0);
- }
-
- byte_length = tap_length / 8;
+ // number of full bytes (plus one if some would be left over)
+ byte_length = tap_length / 8 + !!(tap_length % 8);
usb_out_buffer[0] = EMU_CMD_HW_JTAG3;
usb_out_buffer[1] = 0;
--
cgit v1.2.3