#
# receive and display messages depending on signal sent from daughter boards
#
# Seowoo Kim
# HTMAA 2017
#

from Tkinter import *
import serial

WINDOW = 600 # window size
eps = 0.75 # filter fraction
filt = 0.0 # filtered value


def idle(parent,canvas):
   global filt, eps
   #
   # idle routine
   #
   byte2 = 0
   byte3 = 0
   byte4 = 0
   ser.flush()
   #
   # find framing 
   #

   
   while 1:
      x = ord(ser.read())

      if (x == 49):
        canvas.create_text(.1*WINDOW,.1*WINDOW,text="1",font=("Helvetica", 24),tags="text",fill="#0000b0")
        canvas.pack()
        canvas.itemconfigure("text",text="                   Object 1 is not patented")
        canvas.update()
        parent.after_idle(idle,parent,canvas)

      if (x == 50):
        canvas.create_text(.1*WINDOW,.1*WINDOW,text="1",font=("Helvetica", 24),tags="text",fill="#0000b0")
        canvas.pack()
        canvas.itemconfigure("text",text="                   Object 2 is not patented")
        canvas.update()
        parent.after_idle(idle,parent,canvas)

      #if (x == 3):
      #  canvas.create_text(.1*WINDOW,.1*WINDOW,text="1",font=("Helvetica", 24),tags="text",fill="#0000b0")
      #  canvas.pack()
      #  canvas.itemconfigure("text",text="                   Object 3 is not patented")
   

      #if (x == 4):
      #  canvas.create_text(.1*WINDOW,.1*WINDOW,text="1",font=("Helvetica", 24),tags="text",fill="#0000b0")
      #  canvas.pack()
      #  canvas.itemconfigure("text",text="                   Object 4 is not patented")

#
#  check command line arguments
#
if (len(sys.argv) != 2):
   print "command line: hello.txrx.45.py serial_port"
   sys.exit()
port = sys.argv[1]
#
# open serial port
#
ser = serial.Serial(port,9600)
ser.setDTR()
#
# set up GUI
#
root = Tk()
root.title('hello.txrx.45.py (q to exit)')
root.bind('q','exit')
canvas = Canvas(root, width=WINDOW, height=.25*WINDOW, background='white')
#
# start idle loop
#
root.after(100,idle,root,canvas)
root.mainloop()