#!/usr/bin/python
 
import serial,sys,getopt
 
try:
	opts, args = getopt.getopt(sys.argv[1:], "x:y:s:b")
except getopt.GetoptError, err:
	# print help information and exit:
	print str(err) # will print something like "option -a not recognized"
	sys.exit(2)

x=0
y=0
s=""
clear = False

for o, a in opts:
	if o == "-x":
		x = a
	elif o == "-y":
		y = a
	elif o == "-s":
		s = a
	elif o == "-b":
		clear = True
	else:
		assert False, "Unhandled option"
 
# Open the serial port on J16
 
ser = serial.Serial(
	port='/dev/ttyS3', 
	baudrate=115200, 
	timeout=1,
	parity=serial.PARITY_NONE,
	stopbits=serial.STOPBITS_ONE,
	bytesize=serial.EIGHTBITS
)  
 
ser.write("U")		# Autobaud char
rtc = ser.read(1)	# Wait for a reply

if clear==True:
	ser.write("E")		# Clear screen
	rtc = ser.read(1)	# Wait for a reply

ser.write("s%c%c%c%c%c%s%c" % (int(x),int(y),1,0xFF,0xFF,s,0x00))		
rtc = ser.read(1)	# Wait for a reply

ser.close()			# Close port