def serve(self):
try:
self.serve_forever()
except KeyboardInterrupt:
print("Shutting down..")
gpio.all_off()
self.server_close()
print("bye!")
self.shutdown()
def handshake(self):
data = self.request.recv(1024).strip()
# data = data.split('\r\n', 1) ==> TypeError: Type str doesn't support the buffer API
# needs to be: data.split(b'\r\n', 1)
# print(data)
# data = data[1]
# data = data.splitlines()
# print(data)
data = data.split(b"\r\n", 1)[1] # remove the HTTP header, but why?
# print(data)
# data = str(data)
# data = StringIO(data)
# print(data)
headers = message_from_bytes(data) # so that we can use the get method!
# print(headers)
upg = headers.get("Upgrade", None)
# print(">%s<" % upg)
if upg != "websocket":
return
print("Handshaking...")
# turn all pins off
gpio.all_off()
key = headers["Sec-WebSocket-Key"]
# digest = b64encode(sha1(key + self.magic).hexdigest().decode('hex'))
# print(key)
key = key + self.magic
key = key.encode("ascii")
digest = sha1(key)
# print(digest)
digest = digest.hexdigest()
# print(digest)
digest = bytes.fromhex(digest)
# print(digest)
digest = b64encode(digest)
digest = digest.decode("utf8")
# print(digest)
response = "HTTP/1.1 101 Switching Protocols\r\n"
response += "Upgrade: websocket\r\n"
response += "Connection: Upgrade\r\n"
# print(response)
response += "Sec-WebSocket-Accept: "
response += digest
response += "\r\n\r\n"
# print(response)
response = bytes(response.encode("ascii"))
# print(response)
self.handshake_done = self.request.send(response)
def put_to_power_sleep():
voltage = get_battery_voltage()
current = get_battery_current()
try:
if voltage < 2:
voltage = voltage * 10
printf(
"Voltage reading biased: Reading {0} volt and {1} amps".format(
voltage, current))
if voltage < 11.0:
had_slept = None
try:
with open('/media/mmcblk0p1/logs/sleep.log', 'r') as sched_log:
had_slept = sched_log.read()
except:
pass
if had_slept:
all_off(1)
printf(
'Voltage still too low, going back to a long sleep (1 hour). Reading {0} volt and {1} amps'
.format(voltage, current))
call('rm /media/mmcblk0p1/logs/sleep.log', shell=True)
# call(
# "bash /media/mmcblk0p1/amigos/bash/sleep {0}".format(59), shell=True)
else:
with open('/media/mmcblk0p1/logs/sleep.log',
'w+') as sched_log:
sched_log.write('1')
printf(
'Voltage too low, going back to 10 minutes sleep. Reading {0} volt and {1} amps'
.format(voltage, current))
# call(
# "bash /media/mmcblk0p1/amigos/bash/sleep {0}".format(10), shell = True)
elif voltage > 14.0:
printf('Voltage is too high. Reading {0} volt and {1} amps'.format(
voltage, current))
else:
printf(
'Voltage in normal operating range. Reading {0} volt and {1} amps'
.format(voltage, current))
except:
printf('failed to excute put_to_sleep')
traceback.print_exc(
file=open("/media/mmcblk0p1/logs/system.log", "a+"))
# print(sys.path)
try:
gpio.setup()
def simpleprint(self, message):
# print("message %s" % message)
try:
actor = int(message.split()[0])
wert = message.split()[1]
if 0 <= actor <= 3:
# print("actor %d, wert %d" % (actor, wert))
gpio.mag_st(actor, int(wert))
if 4 <= actor <= 7:
if wert == "true":
wert = 0
else:
wert = 1
# print("W="+str(wert))
gpio.pol(actor - 4, wert)
except ValueError:
return
WebSocketServer(port, simpleprint).serve()
finally:
# turn all pins off
gpio.all_off()
