import serial
from Tkinter import *

# all devicefiles - change it, if necessary
devicefiles=['/dev/ttyS0', '/dev/ttyS1', '/dev/ttyUSB0']

# default device, selected at startup
serdevice=serial.Serial('/dev/ttyS0', timeout=0.5)

# number of F-switches (for testing only 4)
maxf=4

# Anfangszustand der Funktionstasten
f1var=[]
for id in range(maxf+1):
	f1var.append(True)

# default value of Power-Switch
powervar=True

# array for the f-switches
fbutton=[]

# Debug-Level, increase, if you want more output
debug=0

def gruss():
	print "Python for UniDecF with SPROG II, Version 0.1, Ralph Sontag"


# serielles Kommando aus comsel lesen und abschicken.
def sercommand():
	x=comsel.get()
	if debug > 0: print "Schreibe: ", x
	serdevice.write(x + '\r\n')
	try:
		y = serdevice.readline()
		if debug > 0: print "Lese: ", y
		ausgabe.insert("10.0",y)
		# y = serdevice.readline()
		# print "Lese: ", y
		# ausgabe.insert("10.0",y)
	except:
		print "Nichts zu lesen"

def power():
	global powervar
	if powervar == True:
		s = '+'
		powervar = False
		power.config(background="green", activebackground='#6f6')
	else:
		s = '-'
		powervar = True
		power.config(background="red", activebackground='#f66')
	comsel.set(s)
	sercommand()

# Funktionstasten, z.B. F1 bei ID 5:
# O 05 81 84 / O 05 80 85
#   0000 0101	# 05 = Adresse
#   1000 0001 	# 
#   1000 0100	# Pruefbyte = excl. Oder
# 
def f1(id):
	global f1var
	if f1var[id] == True:
		f1var[id] = False
		fbutton[id].config(background="red", activebackground='#f66')
	else:
		f1var[id] = True
		fbutton[id].config(background="green", activebackground='#6f6')
	s = 'O '+str(hex(idsel.get()))[2:]+' '
	b = 128
	for f in range(maxf):
		if f1var[f+1] == False:
			if debug > 2: print "Addiere: ", 2**f
			b = b + 2**f
	if f1var[0] == False:
		b = b + 16
	s = s + str(hex(b))[2:]+' '+str(hex(idsel.get() ^ b))[2:]
	comsel.set(s)
	sercommand()

def changedevice(*args):
	try:
		serdevice.close()
	except:
		print "No serial device open"
	serport = devsel.get()
	serdevice.portstr = serport
	if debug > 0: print "New serdevices: ", serdevice
	serdevice.open()

def ende():
	root.destroy()

def make_fcall(value):
    def call_func():
        f1(value)
    return call_func



# Oberflaeche bauen
root = Tk()

devsel = StringVar()
devsel.trace("w", changedevice)
comsel = StringVar()
idsel = IntVar()

# Menue bauen
root.ml = Menu(root)
root.ml.add_command(label="Quit", command=ende)
root.ml.add_command(label="Version", command=gruss)
root.config(menu=root.ml)

# Elemente definieren
label1 = Label (root, pady=10, text="SPROG II \r\nSelect the device file:")
label2 = Label (root, text="Command Monitor")
ausgabe=Text(height=10, width=20)
commandline=Entry(root,textvariable=comsel)
sendcom = Button(root, text="sent command", command=sercommand)
frame1=Frame(root, pady=10)
frame2=Frame(root, pady=10)

# frame1 packen: Power und F-Tasten
power = Button(frame1, width=0, padx=0, text="Power", background="red", activebackground='#f66', command=power)
for id in range(maxf+1):
	fbutton.append(Button(frame1, padx=0,width=0, text="F"+str(id), background="green", activebackground='#6f6', command=make_fcall(id)))

# frame2 packen: Auswahl der Decoder-ID
label3 = Label (frame2, text="Select the Decoder-ID:")
label3.pack()
for id in range(1,10,1):
	Radiobutton(frame2, width=1, text=id, value=id, indicatoron=0, variable=idsel).pack(side=LEFT)
idsel.set(3)


# Elemente anordnen
label1.pack()

for item in devicefiles:
	Radiobutton(root, width=20, text=item, value=item, indicatoron=0, variable=devsel).pack(anchor=W)
devsel.set('/dev/ttyS0')

frame2.pack()
frame1.pack()
power.pack(side=LEFT)
for id in range(maxf+1):
	fbutton[id].pack(side=LEFT)
label2.pack()
ausgabe.pack()
commandline.pack()
sendcom.pack()

root.mainloop()