From 0aad574f600f37f08faae603952a4f9644aa92a8 Mon Sep 17 00:00:00 2001
From: Florian Streibelt <florian@freitagsrunde.org>
Date: Tue, 18 Oct 2011 19:23:14 +0200
Subject: [PATCH] commands converted from C-program to python, now replacing
 all calls accordingly

---
 client-barcode/display.py       | 65 +++++++++++++++++++++++++++++----
 client-barcode/freitagskasse.py |  2 +-
 2 files changed, 58 insertions(+), 9 deletions(-)

diff --git a/client-barcode/display.py b/client-barcode/display.py
index 6e2702e..59ad56d 100644
--- a/client-barcode/display.py
+++ b/client-barcode/display.py
@@ -1,8 +1,9 @@
 import serial
 
+
+
 class Display:
 	def __init__(self,portname="/dev/ttyUSB0"):
-		#code here
 		self.serialport=None
 		self.open_port(portname)
 
@@ -13,13 +14,61 @@ class Display:
 
 	def open_port(self,portname):
 		self.serialport = serial.Serial(portname,9600,timeout=2,rtscts=True, dsrdtr=True)
-		self.reset_display()
-		self.send("Hello world")
+		print ("Initializing display:\n  %s\n" % self.serialport )
+		self.cmd_reset()
+		self.write("Hello world")
+
+	def cmd_reset(self):
+		#reset the display
+		self.write("\x1b\x40")
+
+	def cmd_cursor_show(self,on=True):
+		#show or hide the cursor
+		if (on): 
+			self.write("\x1f\x43\x01")
+		else:
+			self.write("\x1f\x43\x00")
+
+	def cmd_blink(self,rate=127):
+		self.write("\x1f\x45%c" % rate)
+
+	def cmd_display_on(self,on=True):
+		# blink-command: 
+		# where the last value defines the blink rate, 
+		# with 0=always on, 255=always off
+		if (on):
+			self.cmd_blink(0)
+		else:
+			self.cmd_blink(255)
+
+	def cmd_curmode_overwrite(self):
+		cmd_curmode(1)			
+
+	def cmd_curmode_vscroll(self):
+		cmd_curmode(2)			
+
+	def cmd_curmode_hscroll(self):
+		cmd_curmode(3)			
+
+	def cmd_curmode(self,val=2):
+		self.write("\x1f%c" % val)
+
+	def cmd_clear(self):
+		self.write("\x0c")
+
+	
+	def cmd_time(self):
+		# activate timer display in lower right corner.
+		# actual time has to be set via display_set_timer.
+		self.write("\x1f\x55")
+
+	def cmd_time_set(self,h,m):
+		# configures hour and minutes of the internal clock and
+		# displays the time in the lower right corner.
+		# turns off when something gets written into the line.
+		# two bytes have to follow with hour and minute
+		self.write("\x1F\x54%c%c" % (h,m) )
 
 
-	def reset_display(self):
-		print ("Initializing display on port %s\n" % self.serialport )
-		#code here
-
-	def send(self,text):
+	def write(self,text):
 		self.serialport.write(text)	
diff --git a/client-barcode/freitagskasse.py b/client-barcode/freitagskasse.py
index 681cba0..d8ce0ba 100644
--- a/client-barcode/freitagskasse.py
+++ b/client-barcode/freitagskasse.py
@@ -581,7 +581,7 @@ def main():
 	global myDisplay
 
 	myDisplay = Display("/dev/ttyUSB0")
-	myDisplay.reset_display()
+	myDisplay.cmd_reset()
 
 	print_display("\x1b\x40\x1f\x43\x00")
 	start_new_thread(display_thread,(1,))