#!/usr/bin/python3
-import time, socket, os, stat
-from datetime import datetime
import RPi.GPIO as GPIO
-GPIO.setmode(GPIO.BOARD)
-
-# ******** definitions *********
-# logging function
-# TODO: loglevel, log like a real daemon
-def log (what):
- print (datetime.now(),what)
-
-# send to client for information but don't care if it arrives
-def waynesend (conn, what):
- try:
- conn.send(what)
- except:
- log("Couldn't send %s" % str(what))
-
-# for command not found: do nothing with the pins and send a "0" to the client
-def doNothing (conn):
- log ("doing nothing")
- waynesend(conn,b"0")
- pass
-
-# commands: on a pin do a series of timed on/off switches
-class Pinoutput:
- # name is for logging and also used for mapping command names to instances of this class
- # actionsanddelays is a list of pairs: (bool to set on pin, delay in seconds to wait afterwards)
- def __init__ (self, name, pinnumber, actionsanddelays):
- self.name = name
- self.pin = pinnumber
- self.todo = actionsanddelays
- GPIO.setup(pinnumber, GPIO.OUT)
- log ("Pin %d set to be an output pin for %s." % (pinnumber,name))
- # actually send the signal to the pins
- def __call__ (self, conn):
- for (value,delay) in self.todo:
- GPIO.output(self.pin, value)
- log ("%s: Pin %d set to %s." % (self.name,self.pin,str(value)))
- time.sleep(delay)
- # notify success
- waynesend(conn,b"1")
-
-# ******** configuration *********
-
-tuergroupid = 1005
-socketname = "/run/tuer.sock"
-pinlist = [Pinoutput("open", 12, [(True, 0.3), (False, 5.0)]),
- Pinoutput("close", 16, [(True, 0.3), (False, 5.0)]),
- Pinoutput("buzz", 22, [(True, 2.0), (False, 0.1)])]
+import statemachine, actor, pins, tysock, waker
+# initialize GPIO stuff
+GPIO.setmode(GPIO.BOARD)
-# ******** main *********
-# convert list of pin objects to dictionary for command lookup
-pindict = {}
-for pin in pinlist:
- pindict[pin.name.encode()] = pin
+# bring 'em all up
+the_actor = actor.Actor()
+the_machine = statemachine.StateMachine(the_actor)
+the_socket = tysock.TySocket(the_machine)
+the_pins = pins.PinsWatcher(the_machine)
+the_waker = waker.Waker(the_machine)
-# create socket
-sock = socket.socket (socket.AF_UNIX, socket.SOCK_STREAM)
-# delete old socket file and don't bitch around if it's not there
+# we do the socket accept thing in the main thread
try:
- os.unlink (socketname)
-except OSError:
+ the_socket.accept()
+except KeyboardInterrupt:
+ # this is what we waited for!
pass
-# bind socket to file name
-sock.bind (socketname)
-# allow only users in the tuergroup to write to the socket
-os.chown (socketname, 0, tuergroupid)
-os.chmod (socketname, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP)
-# listen to the people, but not too many at once
-sock.listen(1)
-# main loop
-# FIXME: DoS by opening socket but not sending data, because this loop is single threaded; maybe settimeout helps a bit.
-while True:
- # accept connections
- conn, addr = sock.accept()
- # TODO: use addr to determine the client for logging
- # get some data from the client (enough to hold any valid command)
- data = conn.recv (32)
- # log the command
- log("received command: %s" % str(data))
- # lookup the command, if it's not in the dict, use the doNothing function instead
- # and execute the looked up command or doNothing with the connection, so it can respond to the client
- pindict.get(data,doNothing)(conn)
- # close connection cleanly
- conn.close()
+# bring 'em all down
+the_waker.stop()
+the_pins.stop()
+the_socket.stop()
+the_machine.stop()
+the_actor.stop()
-# FIXME will this be executed after receiving a terminating signal?
+# shutdown GPIO stuff
GPIO.cleanup()
-
projects / saartuer.git / blobdiff