一、PyboardCN V2板 一块安全
二、杜邦线:若干spa
三、DHT11模块 一块调试
DHT11 | Pyboard |
VCC | 3.3V-5V |
GND | GND |
DATA | Y1 |
首先将dht.py复制到PYBFLASH磁盘的根目录。复制文件后要安全退出磁盘,而后从新接入,否则找不到文件。先将DHT11按照上图接线,而后输入下面代码:code
>>> from machine import Pin >>> import dht >>> dht = dht.DHT11(Pin("Y1")) >>> dht.measure() >>> print("temperature:",dht.temperature()) temperature: 29 >>> print("humidity:",dht.humidity()) humidity: 53
dht.py文件内容以下:ci
# DHT11/DHT22 driver for MicroPython on ESP8266 # MIT license; Copyright (c) 2016 Damien P. George try: from esp import dht_readinto except: from pyb import dht_readinto class DHTBase: def __init__(self, pin): self.pin = pin self.buf = bytearray(5) def measure(self): buf = self.buf dht_readinto(self.pin, buf) if (buf[0] + buf[1] + buf[2] + buf[3]) & 0xff != buf[4]: raise Exception("checksum error") class DHT11(DHTBase): def humidity(self): return self.buf[0] def temperature(self): return self.buf[2] class DHT22(DHTBase): def humidity(self): return (self.buf[0] << 8 | self.buf[1]) * 0.1 def temperature(self): t = ((self.buf[2] & 0x7f) << 8 | self.buf[3]) * 0.1 if self.buf[2] & 0x80: t = -t return t
注:it