Browse Source

Add timeout and reconnect support

reconnect
sqozz 4 years ago
parent
commit
5c06fc131a
  1. 29
      example.py
  2. 54
      sem6000.py

29
example.py

@ -1,16 +1,23 @@
from sem6000 import SEMSocket
import time
socket = SEMSocket('f0:c7:7f:0d:e7:17')
from sem6000 import SEMSocket
# auto_reconnect_timeout enabled auto reconnect if sending a command fails. Valid values:
# None (default): everything that fails throws NotConnectedException's
# -1: infinite retries
# integer: seconds before exception is thrown
socket = SEMSocket('f0:c7:7f:0d:e7:17', auto_reconnect_timeout=None)
socket.login("1337")
socket.changePassword("1234")
socket.login("1234")
#socket.changePassword("1337")
#socket.login("1337")
#socket.changePassword("1234")
#socket.login("1234")
while True:
break;
time.sleep(1)
socket.getStatus()
socket.setStatus(True)
print("=== {} ({}) ===".format(socket.mac_address, "on" if socket.powered else "off"))
print("\t{}V {}A → {}W@{}Hz".format(socket.voltage, socket.current, socket.power, socket.frequency))
try:
socket.getStatus()
socket.setStatus(True)
print("=== {} ({}) ===".format(socket.mac_address, "on" if socket.powered else "off"))
print("\t{}V {}A → {}W@{}Hz".format(socket.voltage, socket.current, socket.power, socket.frequency))
except SEMSocket.NotConnectedException:
socket.reconnect(-1) #infinite reconnect attempts

54
sem6000.py

@ -1,11 +1,11 @@
from bluepy import btle
import struct
import time
import pdb
import uuid
class SEMSocket():
password = "0000"
auto_reconnect_timeout = None
powered = False
voltage = 0
current = 0
@ -16,18 +16,19 @@ class SEMSocket():
read_char = None
write_char = None
notify_char = None
connected = False
def __init__(self, mac):
def __init__(self, mac, auto_reconnect_timeout = None):
self.mac_address = mac
self.btle_device = btle.Peripheral(self.mac_address,addrType=btle.ADDR_TYPE_PUBLIC,iface=0)
self.btle_handler = self.BTLEHandler(self)
self.auto_reconnect_timeout = auto_reconnect_timeout
try:
self.reconnect()
except self.NotConnectedException:
# initial connection may fail. It is up to the code what to do
pass
self.custom_service = self.btle_device.getServiceByUUID(0xfff0)
self.read_char = self.custom_service.getCharacteristics("0000fff1-0000-1000-8000-00805f9b34fb")[0]
print(self.read_char.read())
self.write_char = self.custom_service.getCharacteristics("0000fff3-0000-1000-8000-00805f9b34fb")[0]
self.notify_char = self.custom_service.getCharacteristics("0000fff4-0000-1000-8000-00805f9b34fb")[0]
self.btle_device.setDelegate(self.btle_handler)
class NotConnectedException(Exception):
pass
class BTLEMessage():
MAGIC_START = bytearray([0x0f])
@ -73,6 +74,9 @@ class SEMSocket():
self.__data[1] = 1 + len(self.__payload) + 1 # cmd + payload + checksum
def send(self):
if not self.__btle_device.connected:
self.__btle_device.reconnect(self.__btle_device.auto_reconnect_timeout)
self.__btle_device.write_char.write(self.__data, True)
self.__btle_device.btle_device.waitForNotifications(5)
@ -110,7 +114,6 @@ class SEMSocket():
print ("Unknown message from Handle: 0x" + format(cHandle,'02X') + " Value: "+ format(data))
def getStatus(self):
print("GetStatus")
#15, 5, 4, 0, 0, 0, 5, -1, -1
cmd = bytearray([0x04])
payload = bytearray([0x00, 0x00, 0x00])
@ -118,7 +121,6 @@ class SEMSocket():
msg.send()
def setStatus(self, status):
print("SetStatus:", status)
# 0f 06 03 00 01 00 00 05 ff ff -> on
# 0f 06 03 00 00 00 00 04 ff ff -> off
cmd = bytearray([0x03])
@ -127,7 +129,6 @@ class SEMSocket():
msg.send()
def login(self, password):
print("Login")
self.password = password
cmd = bytearray([0x17])
payload = bytearray()
@ -145,7 +146,6 @@ class SEMSocket():
msg.send()
def changePassword(self, newPassword):
print("Change Password")
cmd = bytearray([0x17])
payload = bytearray()
payload.append(0x00)
@ -162,6 +162,32 @@ class SEMSocket():
msg = self.BTLEMessage(self, cmd, payload)
msg.send()
def __reconnect(self):
try:
self.btle_device = btle.Peripheral(self.mac_address,addrType=btle.ADDR_TYPE_PUBLIC,iface=0)
self.btle_handler = self.BTLEHandler(self)
self.custom_service = self.btle_device.getServiceByUUID(0xfff0)
self.read_char = self.custom_service.getCharacteristics("0000fff1-0000-1000-8000-00805f9b34fb")[0]
self.write_char = self.custom_service.getCharacteristics("0000fff3-0000-1000-8000-00805f9b34fb")[0]
self.notify_char = self.custom_service.getCharacteristics("0000fff4-0000-1000-8000-00805f9b34fb")[0]
self.btle_device.setDelegate(self.btle_handler)
except btle.BTLEException as e:
self.connected = False
else:
self.connected = True
def reconnect(self, timeout = None):
if timeout == None:
self.__reconnect()
else:
reconnect_start = time.time()
while abs(reconnect_start - time.time()) < timeout or timeout == -1:
self.__reconnect()
if not self.connected:
raise self.NotConnectedException
#def SynVer(self):
# print("SynVer")
# self.read_char.read_value()

Loading…
Cancel
Save