🔨 Moves to an Object Oriented structure
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This commit is contained in:
Daniel Svitan
parent
96abe93c3e
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1
peripheral/.gitignore
vendored
Normal file
1
peripheral/.gitignore
vendored
Normal file
@ -0,0 +1 @@
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.env.json
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@ -5,127 +5,158 @@ import urequests
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import machine
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from machine import Pin
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led = Pin(15, Pin.OUT)
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trigger = Pin(2, Pin.OUT)
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echo = Pin(3, Pin.IN)
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sound = 340 * 100 # m/s * centi = cm/s
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threshold = 15 # cm
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sound_speed = 340 * 100 # m/s * centi = cm/s
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print("Starting door alarm...")
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ssid = "HUAWEI-2EEt-2G"
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password = "hxtU2dvx"
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server = "https://192.168.100.16:5031"
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token = ""
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ultra_counter = 0
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ultra_threshold = 3
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# opened state from previous iteration
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previous_opened = False
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# TODO: add if open for more than 1 minute, send alert
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class App:
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ssid: str
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password: str
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server: str
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token: str
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opened: bool = False
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previously_opened: bool = False
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ultra_opened_counter: int = 0
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ultra_opened_threshold: int = 3
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def connect():
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print("Connecting...")
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wlan = network.WLAN(network.STA_IF)
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wlan.active(False)
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utime.sleep_ms(250)
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wlan.active(True)
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utime.sleep_ms(250)
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led = Pin(15, Pin.OUT)
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trigger = Pin(2, Pin.OUT)
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echo = Pin(3, Pin.IN)
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wlan.connect(ssid, password)
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utime.sleep_ms(100)
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def __init__(self):
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print("Loading .env.json...")
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with open(".env.json") as stream:
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data = ujson.load(stream)
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i = 0
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while not wlan.isconnected():
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print(f"Waiting for connection{(i % 3 + 1) * "."}{3 * " "}", end="\r")
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i += 1
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for _ in range(4):
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led.toggle()
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utime.sleep_ms(250)
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network = data.get("network")
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if network is None:
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print("'network' missing in env")
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exit(1)
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if i % 10 == 0:
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print("Attempting to restart connection...")
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wlan.connect(ssid, password)
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for i in range(10):
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led.toggle()
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utime.sleep_ms(50)
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server = data.get("server")
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if server is None:
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print("'server' missing in env")
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exit(1)
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print(f"Connected with IP {wlan.ifconfig()[0]}")
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# update server to default value
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send_req(False)
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self.ssid = network.get("ssid")
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self.password = network.get("password")
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self.server = server.get("address")
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self.token = server.get("token")
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if self.ssid is None or \
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self.password is None or \
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self.server is None or \
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self.token is None:
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print("missing properties in env")
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exit(1)
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def send_req(opened: bool):
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print("Updating state...", end="\r")
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def connect(self):
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print("Connecting to wifi...")
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wlan = network.WLAN(network.STA_IF)
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wlan.active(False)
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utime.sleep_ms(250)
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wlan.active(True)
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utime.sleep_ms(250)
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data = {"opened": opened}
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raw = ujson.dumps(data)
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try:
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r = urequests.post(f"{server}/write",
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headers={"Authorization": token, "Content-Type": "application/json"},
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data=raw)
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print(f"State updated [{r.status_code}]")
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except Exception as e:
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print(f"Error occurred: {e}")
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def ultra():
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global ultra_counter, previous_opened
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trigger.low()
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utime.sleep_us(2)
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trigger.high()
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utime.sleep_us(10)
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trigger.low()
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# echo goes high as soon as sound wave is sent
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# and returns to low once sound gets back
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while echo.value() == 0:
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sent_time = utime.ticks_us() # us
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while echo.value() == 1:
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received_time = utime.ticks_us() # us
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delta_time = received_time - sent_time # us
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distance = delta_time / 1_000_000 * sound / 2
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print(f"distance: {distance} cm")
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if distance < threshold:
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# door closed
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led.low()
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ultra_counter = 0
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# was it closed just now?
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if previous_opened:
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send_req(False)
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previous_opened = False
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else:
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# door opened
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led.high()
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ultra_counter += 1
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# was it opened just now?
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if not previous_opened:
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send_req(True)
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previous_opened = True
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connect()
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i = 0
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# T = 500ms f = 2 Hz
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while True:
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ultra()
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if i == 20: # every 10 seconds, blink for 100ms
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led.toggle()
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wlan.connect(self.ssid, self.password)
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utime.sleep_ms(100)
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led.toggle()
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utime.sleep_ms(400)
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i = 0
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else:
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utime.sleep_ms(500)
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i += 1
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i = 0
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while not wlan.isconnected():
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print(f"Waiting for connection{(i % 3 + 1) * "."}{3 * " "}", end="\r")
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i += 1
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for _ in range(4):
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self.led.toggle()
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utime.sleep_ms(250)
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if i % 10 == 0:
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print("Attempting to restart connection...")
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wlan.connect(self.ssid, self.password)
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for i in range(10):
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self.led.toggle()
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utime.sleep_ms(50)
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print(f"Connected with IP {wlan.ifconfig()[0]}")
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self.update_server()
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def update_server(self):
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print("Updating state...", end="\r")
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data = {"opened": self.opened}
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raw = ujson.dumps(data)
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try:
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r = urequests.post(f"{self.server}/open",
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headers={"Authorization": self.token, "Content-Type": "application/json"},
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data=raw)
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print(f"State updated [{r.status_code}]")
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except Exception as e:
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print(f"Error occurred: {e}")
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def ultra(self):
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self.trigger.low()
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utime.sleep_us(2)
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self.trigger.high()
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utime.sleep_us(10)
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self.trigger.low()
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# echo goes high as soon as sound wave is sent
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# and returns to low once sound gets back
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sent_time = utime.ticks_us()
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while self.echo.value() == 0:
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sent_time = utime.ticks_us() # us
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received_time = utime.ticks_us()
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while self.echo.value() == 1:
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received_time = utime.ticks_us() # us
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delta_time = received_time - sent_time # us
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distance = delta_time / 1_000_000 * sound_speed / 2
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print(f"distance: {distance} cm")
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if distance < threshold:
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# door closed
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self.led.low()
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self.ultra_opened_counter = 0
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# was it closed just now?
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if self.previously_opened:
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self.update_server()
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self.previously_opened = False
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else:
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# door opened
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self.led.high()
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self.ultra_opened_counter += 1
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# was it opened just now?
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if not self.previously_opened:
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self.update_server()
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self.previously_opened = True
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def run(self):
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print("Starting door alarm...")
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self.connect()
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i = 0
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# T = 500ms f = 2 Hz
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while True:
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try:
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self.ultra()
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if i >= 20: # every 10 seconds, blink for 100ms
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self.led.toggle()
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utime.sleep_ms(100)
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self.led.toggle()
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utime.sleep_ms(400)
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i = 0
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else:
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utime.sleep_ms(500)
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except Exception as e:
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print(f"Fatal exception occurred: {e}")
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i += 1
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if __name__ == "__main__":
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App().run()
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