\u4e00\u3001\u7f16\u5199\u5ba2\u6237\u7aef\u4ee3\u7801
\n
\n\u4e8c\u3001\u7f16\u5199\u8bbe\u5907\u7aef\u63a7\u5236\u4ee3\u7801
\n[codesyntax lang=”python”]
\nfrom machine import Pin, Timer
\nfrom neopixel import NeoPixel
\nfrom simple import MQTTClient
\nimport time
\nimport network<\/p>\n
#\u5b9a\u4e49RGB\u63a7\u5236\u5bf9\u8c61
\n#\u63a7\u5236\u5f15\u811a\u4e3a16\uff0cRGB\u706f\u4e32\u80545\u4e2a
\npin=16
\nrgb_num=5
\nrgb_led=NeoPixel(Pin(pin,Pin.OUT),rgb_num) <\/p>\n
#\u5b9a\u4e49RGB\u989c\u8272
\nRED = (255, 0, 0)
\nORANGE = (255, 165, 0)
\nYELLOW = (255, 150, 0)
\nGREEN = (0, 255, 0)
\nBLUE = (0, 0, 255)
\nINDIGO = (75, 0, 130)
\nVIOLET = (138, 43, 226)
\nBLACK = (0, 0, 0)<\/p>\n
COLORS = (RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, VIOLET)<\/p>\n
def RGB_led_off():
\n for i in range(rgb_num):
\n rgb_led[i]=(0, 0, 0)
\n rgb_led.write()<\/p>\n
def RGB_led_on():
\n for color in COLORS:
\n for i in range(rgb_num):
\n rgb_led[i]=(color[0], color[1], color[2])
\n rgb_led.write()
\n time.sleep_ms(100)
\n time.sleep_ms(1000)<\/p>\n
#\u4ee5\u4e0bMQTT\u76f8\u5173
\nmsg = “”
\nmsg_count=0
\nled1 = Pin(15, Pin.OUT) # \u5b9a\u4e49LED\u63a7\u5236\u5bf9\u8c61<\/p>\n
# \u914d\u7f6e\u4fe1\u606f
\nCONFIG = {
\n “ssid”: “liujh”,
\n “password”: “”,
\n “mqtt_server”: “”,
\n “mqtt_port”: 1083,
\n “client_id”: “ESP32_Client”,
\n “topic”: “mytest”,
\n “mqtt_broker_username”: “ljh”,
\n “mqtt_broker_password”: “”
\n}<\/p>\n
# WIFI\u8fde\u63a5\u51fd\u6570
\ndef wifi_connect(ssid, password, retries=5, delay=15): # Wi-Fi\u8fde\u63a5\u51fd\u6570
\n wlan = network.WLAN(network.STA_IF) # STA\u6a21\u5f0f
\n wlan.active(True) # \u6fc0\u6d3b\u7f51\u7edc\u63a5\u53e3
\n start_time = time.time() # \u8bb0\u5f55\u5f00\u59cb\u8fde\u63a5\u7684\u65f6\u95f4<\/p>\n
if not wlan.isconnected():
\n print(“Connecting to network…”)
\n wlan.connect(ssid, password) # \u8fde\u63a5\u5230\u6307\u5b9aWIFI
\n while not wlan.isconnected():
\n led1.value(1) # LED\u95ea\u70c1\u8868\u793a\u6b63\u5728\u5c1d\u8bd5\u8fde\u63a5
\n time.sleep_ms(300)
\n led1.value(0)
\n time.sleep_ms(300)<\/p>\n
# \u8d85\u8fc715\u79d2\u672a\u8fde\u63a5\u6210\u529f\uff0c\u89c6\u4e3a\u8d85\u65f6
\n if time.time() – start_time > delay:
\n print(“WIFI Connect Timeout!”)
\n led1.value(0) # \u8d85\u65f6\u540e\u5173\u95edLED
\n return False<\/p>\n
led1.value(1) # LED\u5e38\u4eae
\n print(“Network connected!”)
\n print(“Network information:”, wlan.ifconfig())
\n return True<\/p>\n
#\u8bbe\u7f6e MQTT \u56de\u8c03\u51fd\u6570,\u6709\u4fe1\u606f\u65f6\u5019\u6267\u884c
\ndef mqtt_callback(topic,msg):
\n # \u5c06\u5b57\u8282\u7c7b\u578b\u7684\u6d88\u606f\u89e3\u7801\u4e3a\u5b57\u7b26\u4e32
\n message_str = msg.decode(‘utf-8’)
\n print(“topic: {}”.format(topic))
\n print(“msg: {}”.format(message_str))
\n print(f”Received message from topic {topic}: {message_str}”)
\n if message_str == “on”:
\n print(“\u8981\u6211\u5f00\u706f\u4e86\u54e6!”)
\n RGB_led_on()
\n client.publish(CONFIG[‘topic’], “switch on! switch on! switch on! switch on! switch on! “) #\u8fd9\u91cc\u4e00\u53d1\u4e2d\u6587\u5c31\u51fa\u9519\uff0c\u539f\u56e0\u4e0d\u660e
\n if message_str == “off”:
\n print(“\u8981\u5173\u706f\u554a\uff1f”)
\n RGB_led_off()
\n client.publish(CONFIG[‘topic’], “switch off! switch off! switch off! switch off! switch off! “)
\n if message_str == “bye”: # \u73b0\u5728msg\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4e0e\u5b57\u7b26\u4e32\u8fdb\u884c\u6bd4\u8f83
\n print(f”\u518d\u89c1\u6d88\u606f\u6765\u4e86\u5566 —> {topic}: {message_str}”)
\n client.publish(CONFIG[‘topic’], “no bye bye!”)<\/p>\n
# \u4e3b\u7a0b\u5e8f
\nif __name__ == “__main__”:
\n if wifi_connect(CONFIG[‘ssid’], CONFIG[‘password’]):
\n try:
\n SERVER=””
\n PORT=1083
\n CLIENT_ID=”ESP32_Client” #\u5ba2\u6237\u7aefID
\n TOPIC=”mytest” #TOPIC\u540d\u79f0
\n client = MQTTClient(CLIENT_ID, SERVER, PORT, “”, “”) #\u5efa\u7acb\u5ba2\u6237\u7aef
\n #client = MQTTClient(CONFIG[‘client_id’], CONFIG[‘mqtt_server’], CONFIG[‘mqtt_port’],
\n # CONFIG[‘mqtt_broker_username’], CONFIG[‘mqtt_broker_password’], keepalive=60)
\n client.set_callback(mqtt_callback) #\u914d\u7f6e\u56de\u8c03\u51fd\u6570
\n client.connect()
\n client.subscribe(TOPIC) #\u8ba2\u9605\u4e3b\u9898
\n client.publish(TOPIC, CONFIG[‘client_id’])
\n print(f”MQTT Connected \u3001Subscribed and first publish message -> {CONFIG[‘topic’]}:{CONFIG[‘client_id’]}”)
\n except Exception as e:
\n print(e)<\/p>\n
while True:
\n msg_count += 1
\n msg = f”Message {msg_count} from ESP32″
\n if msg_count % 6 ==0 :
\n try:
\n client.publish(CONFIG[‘topic’], msg)
\n print(f”send message to topic {CONFIG[‘topic’]}:{msg}”)
\n except Exception as e:
\n print(f”MQTT connection failed: {e}”)<\/p>\n
client.check_msg()
\n print(msg)
\n time.sleep(1) # \u4f11\u772010\u79d2<\/p>\n
[\/codesyntax]<\/p>\n","protected":false},"excerpt":{"rendered":"
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