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toshiba.py
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toshiba.py
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"""
Packet processor for Toshiba air conditioner
with wired remote controller connected to AB bus.
Tested with NTS-F1403Y1 indoor unit (residential central AC).
!!! SOME MODIFICATIONS MAY BE REQUIRED !!!
!!! FOR USE WITH OTHER TYPES OF INDOOR UNITS. !!!
"""
from enum import IntEnum
from collections import namedtuple
import time
import struct
import threading
from logging import getLogger
from transitions import Machine
# from transitions.extensions import GraphMachine as Machine
from transitions.extensions.states import add_state_features, Timeout
RETRY_WAIT = 1.0 # timeout in seconds for command or query reply
WSTAT_WAIT = 2.0
QUERY_INTERVAL = 60.0
logger = getLogger(__name__)
lock = threading.Lock()
class State(IntEnum):
START = 0
IDLE = 1
CMD = 2
QUERY1 = 3
QUERY2 = 4
SSAVE = 5
FILTER = 6
HUMID = 7
HMDTGL = 8
WSTAT = 9
def __str__(self):
if self.value == 0:
text = 'starting up'
elif self.value == 1:
text = 'idle'
elif self.value == 2:
text = 'command sent'
elif self.value == 3:
text = 'sensor query'
elif self.value == 4:
text = 'extra query'
elif self.value == 5:
text = 'setting save mode'
elif self.value == 6:
text = 'resetting filter'
elif self.value == 7:
text = 'setting humidifier'
elif self.value == 8:
text = 'toggling humidifier'
elif self.value == 9:
text = 'waiting status update'
return text
@add_state_features(Timeout)
class CustomMachine(Machine):
pass
states = [
{
'name': State.START,
'on_enter': 'start_enter', 'on_exit': 'start_exit'
},
State.IDLE,
{
'name': State.CMD, 'timeout': RETRY_WAIT,
'on_timeout': 'send_timeout', 'on_exit': 'send_exit'
},
{
'name': State.WSTAT, 'timeout': WSTAT_WAIT,
'on_timeout': 'wstat_timeout', 'on_exit': 'wstat_exit'
},
{
'name': State.QUERY1, 'timeout': RETRY_WAIT,
'on_timeout': 'send_timeout', 'on_exit': 'send_exit'
},
{
'name': State.QUERY2, 'timeout': RETRY_WAIT,
'on_timeout': 'send_timeout', 'on_exit': 'send_exit'
},
{
'name': State.SSAVE, 'timeout': RETRY_WAIT,
'on_timeout': 'send_timeout', 'on_exit': 'send_exit'
},
{
'name': State.FILTER, 'timeout': RETRY_WAIT,
'on_timeout': 'send_timeout', 'on_exit': 'send_exit'
},
{
'name': State.HUMID, 'timeout': RETRY_WAIT,
'on_timeout': 'hmd_timeout', 'on_exit': 'hmd_exit'
},
{
'name': State.HMDTGL, 'timeout': RETRY_WAIT,
'on_timeout': 'send_timeout', 'on_exit': 'send_exit'
},
]
class StateMachine(object):
def __init__(self, ac):
self.ac = ac
self.callback = None
self.hmd = None
self.retry = 0
self.machine = CustomMachine(
model=self, states=states, initial=State.START,
auto_transitions=False, send_event=True,
before_state_change='state_change'
)
self.machine.add_transition(
trigger='reset',
source='*',
dest=State.START,
)
self.machine.add_transition(
trigger='idle',
source=[
State.START, State.CMD, State.WSTAT, State.QUERY1,
State.QUERY2, State.SSAVE, State.FILTER, State.HUMID
],
dest=State.IDLE,
)
self.machine.add_transition(
trigger='cmd',
source=[State.IDLE, State.WSTAT],
dest=State.CMD,
after='send_packet', unless='rx_only'
)
self.machine.add_transition(
trigger='wstat', source=State.CMD, dest=State.WSTAT,
)
self.machine.add_transition(
trigger='query1', source=State.IDLE, dest=State.QUERY1,
after='send_packet', unless='rx_only'
)
self.machine.add_transition(
trigger='query2', source=State.IDLE, dest=State.QUERY2,
after='send_packet', unless='rx_only'
)
self.machine.add_transition(
trigger='ssave', source=State.IDLE, dest=State.SSAVE,
after='send_packet', unless='rx_only'
)
self.machine.add_transition(
trigger='filter', source=State.IDLE, dest=State.FILTER,
after='send_packet', unless='rx_only'
)
self.machine.add_transition(
trigger='humid',
source=[State.IDLE, State.HMDTGL], dest=State.HUMID,
after='set_humid', unless='rx_only'
)
self.machine.add_transition(
trigger='hmdtgl', source=State.HUMID, dest=State.HMDTGL,
after='send_packet', unless='rx_only'
)
self.machine.add_transition(
trigger='self',
source=[
State.CMD, State.QUERY1, State.QUERY2,
State.SSAVE, State.FILTER, State.HMDTGL
],
dest='=',
)
def state_change(self, event):
if callable(self.ac.state_cb):
self.ac.state_cb(str(event.transition.dest).lower())
def start_enter(self, _event):
if callable(self.ac.start_cb):
self.ac.start_cb()
def start_exit(self, event):
if event.transition.dest != event.transition.source:
if callable(self.ac.ready_cb):
self.ac.ready_cb()
def rx_only(self, _event):
return self.ac.transmit is None
def send_packet(self, event):
logger.debug('send_packet')
self.retry = 0
callback = event.kwargs.get('callback')
if callback is not None:
self.callback = event.kwargs.get('callback')
func, args = self.callback
try:
func(*args)
except Exception as e:
logger.error('state machine packet send failed: %s', e)
# pylint: disable=no-member
self.idle()
def send_timeout(self, _event):
self.retry += 1
if self.retry < 2:
logger.debug('send_timeout retry: %d', self.retry)
elif self.retry < 5:
logger.warning('send_timeout retry: %d', self.retry)
else:
logger.error('send_timeout retry: %d, abort', self.retry)
# pylint: disable=no-member
self.idle()
return
func, args = self.callback
func(*args)
# pylint: disable=no-member
self.self()
def send_exit(self, event):
if (event.transition.dest != event.transition.source
and event.transition.dest != State.WSTAT.name):
self.callback = None
def wstat_timeout(self, _event):
# pylint: disable=no-member
self.cmd()
def wstat_exit(self, event):
if event.transition.dest != State.CMD.name:
self.callback = None
def set_humid(self, event):
hmd = event.kwargs.get('value')
if hmd is not None:
if self.ac.humid == hmd:
# pylint: disable=no-member
self.idle()
else:
self.hmd = hmd
self.ac.toggle_humid()
def hmd_timeout(self, _event):
self.ac.toggle_humid()
def hmd_exit(self, event):
if event.transition.dest != State.HMDTGL.name:
self.hmd = None
CmdSetItem = namedtuple('CmdSetItem', 'bits cmd text')
CommandSets = namedtuple('CommandSets', 'power mode fan save humid')
CMDSETS = CommandSets(
# power
(
CmdSetItem(0b1, '1', 'on'),
CmdSetItem(0b0, '0', 'off')
),
# mode
(
CmdSetItem(0b001, 'H', 'heat'),
CmdSetItem(0b010, 'C', 'cool'),
CmdSetItem(0b011, 'F', 'fan'),
CmdSetItem(0b100, 'D', 'dry'),
CmdSetItem(0b101, 'A', 'auto heat'),
CmdSetItem(0b110, '', 'auto cool')
),
# fan
(
CmdSetItem(0b101, 'L', 'low'),
CmdSetItem(0b100, 'M', 'med'),
CmdSetItem(0b011, 'H', 'high'),
CmdSetItem(0b010, 'A', 'auto')
),
# save mode
(
CmdSetItem(0b11, 'R', 'off'),
CmdSetItem(0b00, 'S', 'on')
),
# humidifier
(
CmdSetItem(0b1, '1', 'on'),
CmdSetItem(0b0, '0', 'off')
)
)
CmdSetting = namedtuple('CmdSetting', 'var value')
class Aircon():
MAX_TMP = 29
MIN_TMP = 18
def __init__(self, addr):
self.transmit = None
self.start_cb = None
self.ready_cb = None
self.state_cb = None
self.update_cb = None
self.status_cb = None
self.update = False
self.queue = []
self.tx_waiting_packet = None
self.tx_packet = None
self.cmd_setting = None
self.machine = StateMachine(self)
self.addr = addr
self.state1 = None
self.state2 = None
self.params = None
self.power = None
self.mode = None
self.save1 = None
self.clean = None
self.fan_lv = None
self.temp1 = None
self.temp2 = None
self.save = None
self.filter = None
self.vent = None
self.humid = None
self.pwr_lv1 = 0
self.pwr_lv2 = 0
self.filter_time = 0
self.sensor = {}
self.extra = {}
self.q_time = 0.0
@property
def state(self):
# pylint: disable=no-member
return self.machine.state
def loop(self):
with lock:
if self.tx_waiting_packet is not None:
self.transmit(self.tx_waiting_packet)
self.tx_waiting_packet = None
if self.state == State.IDLE:
if self.queue:
func, kwargs = self.queue.pop(0)
try:
func(**kwargs)
except Exception as e:
logger.error('executing queue failed: %s', e)
elif self.update:
if callable(self.update_cb):
# pylint: disable=not-callable
self.update_cb()
self.update = False
elif time.time() - self.q_time > QUERY_INTERVAL:
self.power_query()
self.filter_query()
self.sensor_query(0x02)
self.sensor_query(0x03)
self.sensor_query(0x04)
self.sensor_query(0x60)
self.sensor_query(0x61)
self.sensor_query(0x62)
self.sensor_query(0x63)
self.sensor_query(0x65)
self.sensor_query(0x6a)
self.q_time = time.time()
self.update = True
elif self.state == State.WSTAT:
var = self.cmd_setting.var
value = getattr(self, var)
if (var == 'mode'
and self.bits_to_text('mode', value).startswith('auto')):
value = self.cmd_to_bits('mode', 'A')
if value == self.cmd_setting.value:
# pylint: disable=no-member
self.machine.idle()
self.cmd_setting = None
elif self.state == State.SSAVE:
p0 = self.tx_packet
if (p0[7] >> 4) & 0b11 == self.save:
# pylint: disable=no-member
self.machine.idle()
elif self.state == State.FILTER:
if self.filter == 0:
# pylint: disable=no-member
self.machine.idle()
elif self.state == State.HUMID:
if self.humid == self.machine.hmd:
# pylint: disable=no-member
self.machine.idle()
def _transmit(self, p):
with lock:
self.tx_waiting_packet = p
def parse(self, p):
if p[0] == 0x00:
if p[1] == 0xfe:
self.parse_broadcast(p)
elif p[1] == 0x52:
self.parse_params(p)
elif p[1] == self.addr:
self.parse_reply(p)
def parse_broadcast(self, p):
if p[2] == 0x58:
payload = p[6:14]
self.state1 = payload
self.temp2 = (payload[5] >> 1) - 35
self.save1 = payload[7] & 0b1
if self.state == State.START:
# pylint: disable=no-member
self.machine.idle()
ext = True
elif p[2] == 0x1c:
payload = p[6:12]
self.state2 = payload
ext = False
if p[2] == 0x58 or p[2] == 0x1c:
self.power = payload[0] & 0b1
self.mode = (payload[0] >> 5) & 0b111
self.save = (payload[0] >> 3) & 0b11
self.clean = (payload[1] >> 2) & 0b1
self.fan_lv = (payload[1] >> 5) & 0b111
self.filter = (payload[2] >> 7) & 0b1
self.vent = (payload[2] >> 2) & 0b1
self.humid = (payload[2] >> 1) & 0b1
self.temp1 = (payload[4] >> 1) - 35
if callable(self.status_cb):
# pylint: disable=not-callable
self.status_cb(ext)
def parse_params(self, p):
if p[2] == 0x11:
self.params = p[6:8]
def parse_reply(self, p):
if p[2] == 0x18 and p[4] == 0x80 and p[5] == 0xa1:
if self.state == State.CMD:
# pylint: disable=no-member
self.machine.wstat()
elif self.state == State.HMDTGL:
# pylint: disable=no-member
self.machine.humid()
if p[2] == 0x1a and p[4] == 0x80 and p[5] == 0xef:
if self.state == State.QUERY1:
p0 = self.tx_packet
if p[8] == 0x2c:
self.sensor[p0[11]] = (
struct.unpack('>h', bytes(p[9:11]))[0]
)
else:
self.sensor[p0[11]] = None
# pylint: disable=no-member
self.machine.idle()
if p[2] == 0x18 and p[4] == 0x80 and p[5] == 0xe8:
if self.state == State.QUERY2:
p0 = self.tx_packet
self.extra[p0[9]] = p[6:11]
if p0[9] == 0x94:
self.pwr_lv1 = p[9]
self.pwr_lv2 = p[10]
elif p0[9] == 0x9e:
self.filter_time = (p[9] << 8) + p[10]
# pylint: disable=no-member
self.machine.idle()
def bits_to_text(self, cmdtype, bits):
text = f'{bits:b}'
for csi in getattr(CMDSETS, cmdtype):
if csi.bits == bits:
text = csi.text
break
return text
def cmd_to_bits(self, cmdtype, cmd):
if cmd == '':
raise ValueError(
f'empty command: type: {cmdtype}'
)
bits = None
for csi in getattr(CMDSETS, cmdtype):
if csi.cmd == cmd:
bits = csi.bits
break
if bits is None:
raise ValueError(
f'invalid command: type: {cmdtype}, value: {cmd}'
)
return bits
def gen_pkt(self, header, payload):
assert len(header) == 3
p = []
p += header
p.append(len(payload))
p += payload
ck = 0x0
for c in p:
ck ^= c
p.append(ck)
self.tx_packet = p
return p
def set_power(self, cmd):
logger.info('set_power: %s', cmd)
kwargs = {'callback': (self._set_power, (cmd,))}
# pylint: disable=no-member
self.queue.append((self.machine.cmd, kwargs))
def _set_power(self, cmd):
value = self.cmd_to_bits('power', cmd)
self.cmd_setting = CmdSetting('power', value)
header = [self.addr, 0x00, 0x11]
payload = [0x08, 0x41]
byte = 0x02 | value
payload.append(byte)
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def set_mode(self, cmd):
logger.info('set_mode: %s', cmd)
kwargs = {'callback': (self._set_mode, (cmd,))}
# pylint: disable=no-member
self.queue.append((self.machine.cmd, kwargs))
def _set_mode(self, cmd):
value = self.cmd_to_bits('mode', cmd)
self.cmd_setting = CmdSetting('mode', value)
header = [self.addr, 0x00, 0x11]
payload = [0x08, 0x42]
payload.append(value)
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def set_cmd(self, head, mode, fan_lv, temp):
assert mode is not None
assert fan_lv is not None
assert temp >= self.MIN_TMP
assert temp <= self.MAX_TMP
header = [self.addr, 0x00, 0x11]
payload = [0x08, 0x4c]
mode = mode & 0b111
byte = head << 3 | mode
payload.append(byte)
fan_lv = fan_lv & 0b111
byte = 0b111000 | fan_lv
payload.append(byte)
temp = (temp + 35) << 1
payload.append(temp)
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def set_temp(self, temp):
logger.info('set_temp: %s', temp)
kwargs = {'callback': (self._set_temp, (temp,))}
# pylint: disable=no-member
self.queue.append((self.machine.cmd, kwargs))
def _set_temp(self, temp):
assert self.state != State.START
if not isinstance(temp, int):
raise TypeError('temp is not integer')
if temp < self.MIN_TMP or temp > self.MAX_TMP:
raise ValueError('invalid temp value')
self.cmd_setting = CmdSetting('temp1', temp)
modes = ['heat', 'dry', 'cool', 'auto heat', 'auto cool']
if self.bits_to_text('mode', self.mode) not in modes:
raise ValueError('set temp in invalid mode')
self.set_cmd(0b01, self.mode, self.fan_lv, temp)
def set_fan(self, cmd):
logger.info('set_fan: %s', cmd)
kwargs = {'callback': (self._set_fan, (cmd,))}
# pylint: disable=no-member
self.queue.append((self.machine.cmd, kwargs))
def _set_fan(self, cmd):
assert self.state != State.START
value = self.cmd_to_bits('fan', cmd)
self.cmd_setting = CmdSetting('fan_lv', value)
self.set_cmd(0b10, self.mode, value, self.temp1)
def sensor_query(self, qid):
logger.debug('sendor_query: %s', qid)
self.sensor[qid] = 0
kwargs = {'callback': (self._sensor_query, (qid,))}
# pylint: disable=no-member
self.queue.append((self.machine.query1, kwargs))
def _sensor_query(self, qid):
assert qid < 0xff
header = [self.addr, 0x00, 0x17]
payload = [0x08, 0x80]
payload += [0xef, 0x00, 0x2c, 0x08, 0x00]
payload.append(qid)
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def extra_query(self, qid):
logger.debug('extra_query: %s', qid)
self.extra[qid] = 0
kwargs = {'callback': (self._extra_query, (qid,))}
# pylint: disable=no-member
self.queue.append((self.machine.query2, kwargs))
def _extra_query(self, qid):
assert qid in [0x94, 0x9e]
header = [self.addr, 0x00, 0x15]
payload = [0x08, 0xe8]
payload += [0x00, 0x01, 0x00]
payload.append(qid)
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def power_query(self):
self.extra_query(0x94)
def filter_query(self):
self.extra_query(0x9e)
def set_save(self, cmd):
logger.info('set_save: %s', cmd)
kwargs = {'callback': (self._set_save, (cmd,))}
# pylint: disable=no-member
self.queue.append((self.machine.ssave, kwargs))
def _set_save(self, cmd):
assert self.state != State.START
bits = self.cmd_to_bits('save', cmd)
header = [self.addr, 0xfe, 0x10]
payload = [0x00, 0x4c]
a = 0b100000 | self.mode
payload.append(a)
a = bits << 4 | 0b1000 | self.fan_lv
payload.append(a)
a = (self.temp1 + 35) << 1
payload.append(a)
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def reset_filter(self):
logger.info('reset_filter')
kwargs = {'callback': (self._reset_filter, ())}
# pylint: disable=no-member
self.queue.append((self.machine.filter, kwargs))
def _reset_filter(self):
header = [self.addr, 0xfe, 0x10]
payload = [0x00, 0x4b]
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def toggle_humid(self):
logger.info('toggle_humid')
modes = ['heat', 'auto heat']
if self.bits_to_text('mode', self.mode) not in modes:
# pylint: disable=no-member
self.machine.idle()
return
if self.bits_to_text('power', self.power) == 'off':
# pylint: disable=no-member
self.machine.idle()
return
kwargs = {'callback': (self._toggle_humid, ())}
# pylint: disable=no-member
self.machine.hmdtgl(**kwargs)
def _toggle_humid(self):
header = [self.addr, 0x00, 0x11]
payload = [0x08, 0x52, 0x01]
p = self.gen_pkt(header, payload)
# pylint: disable=not-callable
self._transmit(p)
def set_humid(self, cmd):
logger.info('set_humid: %s', cmd)
kwargs = {'cmd': cmd}
self.queue.append((self._set_humid, kwargs))
def _set_humid(self, cmd):
assert self.state != State.START
value = self.cmd_to_bits('humid', cmd)
# pylint: disable=no-member
self.machine.humid(value=value)
def reset(self):
self.queue = []
self.machine.reset()
self.tx_packet = None
self.cmd_setting = None