From: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Date: Mon, 11 Jul 2016 13:23:42 +0000 (+0200)
Subject: tcl: add mrb command to mem_helper.tcl
X-Git-Tag: v0.10.0-rc1~148
X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=commitdiff_plain;h=7a0473bbb6cd4d83ce43fc4b722083b315b80a98

tcl: add mrb command to mem_helper.tcl

add "mrb" command to read a byte of memory into a variable

Change-Id: I5ddc9fbcc55958a249548627bd15824df6dc0d61
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/3542
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
---

diff --git a/tcl/mem_helper.tcl b/tcl/mem_helper.tcl
index a3d92cb82d..86ad00f7eb 100644
--- a/tcl/mem_helper.tcl
+++ b/tcl/mem_helper.tcl
@@ -10,6 +10,15 @@ proc mrw {reg} {
 add_usage_text mrw "address"
 add_help_text mrw "Returns value of word in memory."
 
+proc mrb {reg} {
+	set value ""
+	mem2array value 8 $reg 1
+	return $value(0)
+}
+
+add_usage_text mrb "address"
+add_help_text mrb "Returns value of byte in memory."
+
 # mmw: "memory modify word", updates value of $reg
 #       $reg <== ((value & ~$clearbits) | $setbits)
 proc mmw {reg setbits clearbits} {