class Exo(object):
""" One instanciation for each physical EXO module """
# self.history is a tuple of 8 deque containing (date, value) tuples.
def __init__(self, exoid, send_data):
self.send_data = send_data
self.exoid = exoid
self.mydb = Db()
self.is_present = False
# I must find a way to provide the protocol mpd
# self.protocol = protocol
# self.oldstatus = list()
self.history = tuple([deque(maxlen=HIST) for i in range(8)])
# Not necessary, but ensure queues are not empty.
for i in range(8):
self.history[i].append( ( datetime.datetime.now(), None ) )
def update(self, src, statuslist):
"""
Update the Exo status
And return the list of changes as tupple : ( channel, new_state, last_state )
"""
# self.oldstatus = [self.history[i][-1][1] for i in range(8)]
list_of_changes = list()
for i in range(8):
try:
if self.history[i][-1][1] != statuslist[i]:
now = datetime.datetime.now()
# Ok, we update the Exo history here.
self.history[i].append( ( now, statuslist[i] ) )
# But is it the right place to update the db history ?
self.mydb.history( now, 'EXO', self.exoid, i+1, statuslist[i] )
list_of_changes.append((i+1, statuslist[i], self.history[i][-2][1]))
except IndexOutOfRange:
print("No history yet for this Output.")
return list_of_changes
def update_history(self, dtime, output, status):
""" Used to update from DB history """
data = (dtime, status)
self.history[output - 1].append( data )
def set_output(self, channel, value):
"""Change the status of an EXO channel"""
idx = channel - 1
now = datetime.datetime.now()
# These 2 lines might seem touchy, and should be explained.
self.mydb.history( now, 'EXO', self.exoid, idx+1, value )
self.history[ idx ].append( ( now, value ) )
newdata = [self.history[i][-1][1] for i in range(8)]
# FixMe : The factory shouldn't be called here !!!
self.send_packet( self.exoid + EXOOFFSET, [01] + newdata )
# return [self.history[i][-1][1] for i in range(8)]
return 'Ok'
def send_packet(self, dst, data):
valuelist = [0x23, dst, EXIID, len(data) + 1] + data
# valuelist.append(checksum( data ))
print('Debug : sending packet : ' + ' '.join(
[ '%0.2x' % c for c in valuelist ]))
# packet = ''.join([chr(x) for x in valuelist])
# FixMe
self.send_data(valuelist)
def get_output(self, channel):
"""Get status of an EXO output"""
return self.history[ channel -1 ][-1][1]
