A new example executed by python program

Photosensitive detection/crds/deviceinstance.yaml

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+apiVersion: devices.kubeedge.io/v1alpha2
+kind: Device
+metadata:
+  name: light
+  labels:
+    description: 'light'
+    manufacturer: 'test'
+spec:
+  deviceModelRef:
+    name: light-model
+  nodeSelector:
+    nodeSelectorTerms:
+      - matchExpressions:
+          - key: ''
+            operator: In
+            values:
+              - pi32-1
+status:
+  twins:
+    - propertyName: light-status
+      desired:
+        metadata:
+          type: string
+        value: ''

Photosensitive detection/crds/devicemodel.yaml

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+apiVersion: devices.kubeedge.io/v1alpha2
+kind: DeviceModel
+metadata:
+  name: light-model
+  namespace: default
+spec:
+  properties:
+    - name: light-status
+      description: Light collected from the edge device
+      type:
+        string:
+          accessMode: ReadOnly
+          defaultValue: ''

Photosensitive detection/light-mapper/light.py

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+#!/usr/bin/python
+# encoding:utf-8
+import json
+import sys
+import os
+import paho.mqtt.client as mqtt
+import time
+
+
+import RPi.GPIO as GPIO
+import time
+
+
+
+TASK_TOPIC = "$hw/events/device/" + "light" + "/twin/update"
+
+client_id = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))
+
+client = mqtt.Client(client_id, transport='tcp')
+
+client.connect("192.168.1.204", 1883, 60)
+client.loop_start()
+
+
+def clicent_main(message: str):
+
+    time_now = time.strftime('%Y-%m-%d %H-%M-%S', time.localtime(time.time()))
+    payload = {"event_id":"","timestamp":0,"twin":{"light-status":{"actual": {"value": "%s"%message}, "metadata": {"type":"Updated"}}}}
+
+    client.publish(TASK_TOPIC, json.dumps(payload, ensure_ascii=False))
+
+    return True
+
+pin_pqrs=24
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(pin_pqrs, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
+try:
+    while True:
+        status = GPIO.input(pin_pqrs)
+        if status == False:
+            print('1')
+            clicent_main('light')
+        else:
+            print('0')
+            clicent_main('no_light')
+        time.sleep(0.5)
+except KeyboradInterrupt:
+    GPIO.cleanup()
+

Photosensitive detection/lightdeployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: light-mapper
+  labels:
+    app: light
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: light
+  template:
+    metadata:
+      labels:
+        app: light
+    spec:
+      hostNetwork: true
+      nodeSelector:
+        name: pi32-1
+      containers:
+      - name: light
+        image:  yangrl/light-py:dev
+        imagePullPolicy: IfNotPresent
+        command: ["python3","-u", "/light.py"]
+        securityContext:
+          privileged: true

lightsensor-demo

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+