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runner.py
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runner.py
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import utime
from machine import UART, Pin
import network
from umqtt.robust2 import MQTTClient
import secrets
import uasyncio
LED = Pin("LED", Pin.OUT)
LED.off()
down_green_button = Pin(12, Pin.IN, Pin.PULL_DOWN)
uart = UART(1, 9600, tx=Pin(4), rx=Pin(5))
class Desk:
move_up_data = [241, 241, 1, 0, 1, 126]
move_down_data = [241, 241, 2, 0, 2, 126]
stop_data = [241, 241, 43, 0, 43, 126]
memory_and_current_height_data = [241, 241, 7, 0, 7, 126]
height_limits_data = [241, 241, 12, 0, 12, 126]
current_height = None
max_height = None
min_height = None
mqtt_client = None
def __init__(self):
self.uart = UART(1, 9600, tx=Pin(4), rx=Pin(5))
self.data_queue = []
self.tasks = []
@classmethod
def send(cls, command: list):
uart.write(bytearray(command))
def get_memory_and_current_height(self):
"""
Returns: 5 data blocks, first 4 appear to be saved memory slots, unclear how to decode. Last block is current
height
"""
self.send(self.memory_and_current_height_data)
def move_up(self):
self.send(self.move_up_data)
def move_down(self):
self.send(self.move_down_data)
def stop(self):
self.send(self.stop_data)
def go_to_height(self, height: int) -> None:
first = height // 256
second = height % 256
third = (27 + 2 + first + second) % 256
self.send([241, 241, 27, 2, first, second, third, 126])
def get_height_limits(self):
self.send(self.height_limits_data)
def check_rx(self):
data = self.uart.read()
if not data:
return
self.data_queue.extend(list(data))
@classmethod
def validate_data_block(cls, block: list):
if block[:2] != [242, 242]:
raise InvalidDataException(f"Bad block being returned: {block}")
if block[-1] != 126:
raise InvalidDataException(f"Bad block being returned: {block}")
data = block[2:-2]
validation_int = sum(data) % 256
if block[-2] != validation_int:
raise InvalidDataException(f"Invalid block being returned: {block}")
def get_next_block(self):
if not self.data_queue:
return
for i, d in enumerate(self.data_queue):
if self.data_queue[i:i+2] != [242, 242]:
continue
for ii, dd in enumerate(self.data_queue[i+2:]):
if dd != 126:
continue
next_block = self.data_queue[i:ii+3]
try:
self.validate_data_block(next_block)
except InvalidDataException as e:
print(e)
return
self.data_queue = self.data_queue[ii+3:]
return next_block
def process_height_data(self, data):
height = data[2] * 256 + data[3]
if self.current_height == height:
return
print(f"Height: {height}mm")
self.current_height = height
self.mqtt_client.publish(b'desk/height/read', f'{height // 10}'.encode())
@classmethod
def process_memory_data(cls, data):
print(f"Not sure how to process memory data yet: {data}")
def process_limit_data(self, data):
max_height_limit = data[2] * 256 + data[3]
min_height_limit = data[4] * 256 + data[5]
print(f"Max height detected: {max_height_limit}")
print(f"Min height detected: {min_height_limit}")
self.max_height = max_height_limit
self.min_height = min_height_limit
def process_data(self, data):
if data[:2] == [1, 3]:
self.process_height_data(data)
elif data[:2] in [[37, 2], [38, 2], [39, 2], [40, 2]]:
self.process_memory_data(data)
elif data[:2] == [7, 4]:
self.process_limit_data(data)
async def loop_check(self):
while True:
self.check_rx()
await uasyncio.sleep_ms(100)
async def process_queue(self):
while True:
await uasyncio.sleep_ms(100)
if not self.data_queue:
continue
next_block = self.get_next_block()
if not next_block:
continue
actual_data = next_block[2:-2]
self.process_data(actual_data)
class InvalidDataException(Exception):
pass
def connect_to_wifi():
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.config(pm=0xa11140)
wlan.connect(secrets.SSID, secrets.PASS)
utime.sleep(5)
print(f"Connected: {wlan.isconnected()}")
while not wlan.isconnected():
LED.on()
utime.sleep_ms(250)
wlan.connect(secrets.SSID, secrets.PASS)
LED.off()
print("Successfully connected to WLAN")
def connect_to_mqtt():
mqtt_server = 'homeassistant.local'
client = MQTTClient("umqtt_client", mqtt_server, user=secrets.MQTT_USER, password=secrets.MQTT_PASS)
client.DEBUG = True
client.KEEP_QOS0 = False
# Option, limits the possibility of only one unique message being queued.
client.NO_QUEUE_DUPS = True
# Limit the number of unsent messages in the queue.
client.MSG_QUEUE_MAX = 2
client.set_callback(handle_events)
if not client.connect(clean_session=False):
print("New session being set up")
client.subscribe(b"desk/height/set")
utime.sleep_ms(500)
if client.is_conn_issue():
while client.is_conn_issue():
print(client.conn_issue)
# If the connection is successful, the is_conn_issue
# method will not return a connection error.
client.reconnect()
else:
print("resubscribing")
client.resubscribe()
print('Connected to %s MQTT Broker' % (mqtt_server))
return client
desk = Desk()
def handle_events(topic, msg, retained, duplicate):
print(topic, msg, retained, duplicate)
if topic != b'desk/height/set':
return
desk.go_to_height(10 * int(msg))
async def async_main(client):
desk.tasks.append(uasyncio.create_task(desk.loop_check()))
desk.tasks.append(uasyncio.create_task(desk.process_queue()))
desk.get_height_limits()
desk.get_memory_and_current_height()
desk.mqtt_client = client
while True:
client.check_msg()
await uasyncio.sleep_ms(100)
def main():
connect_to_wifi()
mqtt_client = connect_to_mqtt()
uasyncio.run(async_main(mqtt_client))
"""
[1, 6, 0, 0] -> M pressed (ready to save state)
[1, 5] -> End of data
[129, 213] -> 1
RJ45 Mappings:
RJ45 ->
Solid Blue -> White -> GPIO0 (tx)
Solid Orange -> Brown -> GPIO1 (rx)
Solid Green -> Purple -> Nothing (memory recall)
Solid Brown -> Yellow -> GPI014 (down)
Stripe Blue -> Red -> Power Rail (5V)
Striped Brown -> Green -> GPIO15 (up)
Striped Orange -> Grey -> M Button
Striped Green -> Black -> Ground
Ground -> Ground
RJ12
Green
Blue
Black
Red -> 1V
purple
Blue -> Blue -> Not used
Pink -> Purple -> Not used
BT -> PIN -> Breadboard
White -> Ground -> Black
Red -> 5V -> Green
Green -> T -> Red
Blue -> R -> Yellow
TX -> GPIO0
RX -> GPIO1
Yellow -> Ground
Red -> 5V
gr - tx
blac - rx
"""
"""
Move to 70cm
[241, 241, 43, 0, 43, 126]
[241, 241, 27, 2, 2, 188, 219, 126]
After V drop
[131, 131, 249, 251, 31, 225, 245, 3, 0]
2*256 +188 = 700 = 70cm
[131, 131, 249, 251, 85, 225, 43, 3, 0] = 725
[131, 131, 249, 251, 159, 225, 117, 3, 0] = 688
[131, 131, 249, 249, 245, 225, 201, 3, 0] = 901calc
Bluetooth commands:
[241, 241, 27, 2, 3, 32, 64, 126] -> Go to height
[241, 241, 1, 0, 1, 126] -> Up
[241, 241, 2, 0, 2, 126] -> Down
[241, 241, 43, 0, 43, 126] -> Stop
Command:
[241, 241, 254, 0, 254, 126] -> Occurs on inital BT connection
Response:
[
242, 242, 254, 0, 254, 126,
242, 242, 13, 1, 2, 16, 126,
242, 242, 14, 1, 0, 15, 126,
242, 242, 15, 2, 0, 7, 24, 126,
242, 242, 16, 2, 2, 81, 101, 126,
242, 242, 17, 2, 2, 145, 166, 126,
242, 242, 18, 2, 0, 156, 176, 126,
242, 242, 19, 1, 35, 55, 126,
242, 242, 20, 1, 75, 96, 126,
242, 242, 21, 1, 45, 67, 126,
242, 242, 22, 1, 100, 123, 126,
242, 242, 23, 1, 1, 25, 126,
242, 242, 24, 1, 1, 26, 126,
242, 242, 25, 1, 0, 26, 126,
242, 242, 28, 1, 55, 84, 126,
242, 242, 29, 1, 1, 31, 126,
242, 242, 30, 1, 1, 32, 126
]
Command:
[241, 241, 12, 0, 12, 126]
Response:
[242, 242, 7, 4, 4, 226, 2, 88, 75, 126]
Command:
[241, 241, 7, 0, 7, 126]
Response:
[
242, 242, 37, 2, 25, 102, 166, 126,
242, 242, 38, 2, 22, 86, 148, 126,
242, 242, 39, 2, 49, 100, 190, 126,
242, 242, 40, 2, 59, 130, 231, 126,
242, 242, 1, 3, 3, 31, 15, 53, 126
]
BT COMMAND: [241, 241, 12, 0, 12, 126]
DATA: [242, 242, 7, 4, 4, 226, 2, 88, 75, 126]
Memory Samples:
---------------
[242, 242, 37, 2, 26, 133, 198, 126, 242, 242, 38, 2, 22, 86, 148, 126, 242, 242, 39, 2, 49, 100, 190, 126, 242, 242, 40, 2, 59, 130, 231, 126, 242, 242, 1, 3, 2, 195, 15, 216, 126]
[242, 242, 37, 2, 26, 133, 198, 126, 242, 242, 38, 2, 22, 86, 148, 126, 242, 242, 39, 2, 49, 100, 190, 126, 242, 242, 40, 2, 59, 130, 231, 126, 242, 242, 1, 3, 2, 195, 15, 216, 126]
[242, 242, 37, 2, 38, 52, 129, 126, 242, 242, 38, 2, 38, 52, 130, 126, 242, 242, 39, 2, 38, 52, 131, 126, 242, 242, 40, 2, 38, 52, 132, 126, 242, 242, 1, 3, 3, 131, 15, 153, 126]
min
19, 243, 45 = 599 (31.53)
23, 40, 102 = 652 (28.35)
26, 133, 198 = 707 (27.19)
28, 81, 148 = 737 (26.32)
35, 211, 29 = 860 (24.57)
59, 129, 227 = 1240 (21.02)
max
"""