--- tclpuks/prgsrc/puks.tcl	2005/08/26 00:36:53	1.1
+++ tclpuks/prgsrc/puks.tcl	2005/08/29 14:22:27	1.3
@@ -0,0 +1,100 @@
+#!/usr/bin/wish
+
+##############################################################
+#    Global flags and variables
+##############################################################
+
+# Flags
+set waiting_for_key 0
+set question_asked 0
+set timer_started 0
+
+# Channel to talk to the MRC device
+set MRC 0
+
+#  Mapping of MCR codes to keys:  button(code)
+set buttoncode 256
+for {set i 1} {$i <=8} {incr i} {
+    set button($buttoncode) $i
+    set buttoncode [expr $buttoncode*2]
+}
+
+
+##############################################################
+#  Procedures for talking with MRC
+##############################################################
+
+# Open the given device for MRC.  Return 0 if successful, 1 otherwise
+proc open_mrc {device} {
+    global MRC
+    set result [catch {set MRC [open $device r+]}]
+    if {$result !=0} {
+	return $result
+    }
+    fconfigure $MRC -blocking 0  -translation binary \
+	-encoding binary -buffering none -mode  57600,n,8,1
+    
+    puts $MRC s
+    after 200
+    read $MRC
+    puts $MRC r
+    after 200
+    read $MRC
+    return 0
+}
+    
+
+
+# Return the key pressed or 0
+proc readbuffer {} {
+    global MRC  button
+    set key 0
+    set message [read $MRC]
+    binary scan $message s key
+    set key [expr $key & 0xFFFF]
+    if {[catch {set key $button($key)}] == 0} {
+	return $key
+    }
+    return 0
+}
+
+##############################################################
+#   Setup
+##############################################################
+
+button .start -text "Start" -command start
+pack .start
+label .pressed 
+pack .pressed
+
+
+proc start {} {
+    global SRLFILE state idle waiting
+    readbuffer
+    .start configure -state disabled -command {}
+    set state $waiting
+}
+
+proc body  {} {
+    global state idle waiting
+    update idletasks
+    if { $state == $waiting } {
+	set pressed [readbuffer]
+	if { $pressed != 0 } {
+#	    set state $idle
+#	    .start configure -state active -command start
+	    .pressed configure -text "Pressed $pressed"
+	    puts $pressed
+	    readbuffer	}
+    } else {
+	readbuffer
+    }
+    after 10 body
+}
+
+body 
+
+
+
+
+