搞得这个MicroPython啊,亦可赛艇。
经过上一篇文章,已经配置好了WiFi连接和Webrepl,下面我们来尝试与ESP8266来通信,在GPIO2上我接入了一个DS18x20温度传感器,通过访问ESP8266的8267端口,来获得ESP8266上传感器的数值。

main.py:
(在ESP8266上的socket库叫usocket,json库叫ujson)

 from ds18020 import DS18020
 import usocket
 import ujson
 import esp
 host = '0.0.0.0'
 port = 8267

 ds = DS18020(2)
 ds_addr = ds.getaddr()

 s = usocket.socket()
 s.bind((host,port))
 s.listen(6)
 while True:
     client,addr = s.accept()
     print('Client IP:',addr[0])
     info = {}
     info['flash_size'] = str(esp.flash_size())
     info['flash_free'] = str(esp.freemem())
     info['flash_id'] = str(esp.flash_id())
     info['ds18x20_temp'] = str(ds.gettemp(ds_addr[0]))
     print(info)
     client.send(ujson.dumps(info))
     info = {}
     client.close()

ds18020.py
(很惭愧,只做了一点的微小工作)

 import onewire
 import ds18x20
 import time
 from machine import Pin
 class DS18020:
     def __init__(self,pin):
         self.pin = Pin(pin)
     def getaddr(self):
         ow = onewire.OneWire(self.pin)
         self.ds = ds18x20.DS18X20(ow)
         roms = self.ds.scan()
         return roms
     def gettemp(self,addr):
         self.ds.convert_temp()
         time.sleep_ms(450)
         return self.ds.read_temp(addr)

效果:
31_0.PNG
今天还是挺冷的。

文章版权:远望江来 - 人的一生当然要靠自我奋斗,当然也要考虑历史的行程

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