Python开发板DIY小型家庭气象站的方法是什么

这篇文章主要介绍"Python开发板DIY小型家庭气象站的方法是什么"，在日常操作中，相信很多人在Python开发板DIY小型家庭气象站的方法是什么问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"Python开发板DIY小型家庭气象站的方法是什么"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

　　BMP180是一直常见的气压传感器，BMP180是一款高精度、小体积、超低能耗的压力传感器，可以应用在移动设备中,它的性能卓越，精度最低可以达到0.03hPa，并且耗电极低，只有3μA；BMP180采用强大的8-pin陶瓷无引线芯片承载（LCC）超薄封装，可以通过I2C总线直接与各种微处理器相连。

　　BMP180实物图

　　硬件接线图

　　效果展示图

　　连接完毕后，将font.py，upcd8544.py与bmp180的库导入，就可以通过以下方法分别读取温度、气压、海拔高度了。

　　导入需要的类库，编辑好main.py，直接运行就ok了，下面是main.py的程序源码

# main.py -- put your code here!import pybimport upcd8544from machine import SPI,Pinfrom ubinascii import hexlifyfrom ubinascii import *from bmp180 import BMP180bmp=BMP180(2)SPI = pyb.SPI(1) #DIN=>X8-MOSI/CLK=>X6-SCK#DIN =>SPI(1).MOSI 'X8' data flow (Master out, Slave in)#CLK =>SPI(1).SCK  'X6' SPI clockRST    = pyb.Pin('X20')CE     = pyb.Pin('X19')DC     = pyb.Pin('X18')LIGHT  = pyb.Pin('X17')lcd_5110 = upcd8544.PCD8544(SPI, RST, CE, DC, LIGHT)while True:        tem=bmp.getTemp()        press=bmp.getPress()        altitude=bmp.getAltitude()        lcd_5110.lcd_write_string('Tem:',0,0)        lcd_5110.lcd_write_string(str(tem),0,1)        lcd_5110.lcd_write_string('C',65,1)        lcd_5110.lcd_write_string('Press:',0,2)        lcd_5110.lcd_write_string(str(press),0,3)        lcd_5110.lcd_write_string('Pa',65,3)            lcd_5110.lcd_write_string('Hight:',0,4)        lcd_5110.lcd_write_string(str(altitude),0,5)        lcd_5110.lcd_write_string('M',65,5)bmp180.py库的源码import pybfrom pyb import I2CBMP180_I2C_ADDR = const(0x77)class BMP180():    def __init__(self, i2c_num):        self.i2c = I2C(i2c_num, I2C.MASTER, baudrate = 100000)        self.AC1 = self.short(self.get2Reg(0xAA))        self.AC2 = self.short(self.get2Reg(0xAC))        self.AC3 = self.short(self.get2Reg(0xAE))        self.AC4 = self.get2Reg(0xB0)        self.AC5 = self.get2Reg(0xB2)        self.AC6 = self.get2Reg(0xB4)        self.B1 = self.short(self.get2Reg(0xB6))        self.B2 = self.short(self.get2Reg(0xB8))        self.MB = self.short(self.get2Reg(0xBA))        self.MC = self.short(self.get2Reg(0xBC))        self.MD = self.short(self.get2Reg(0xBE))        self.UT = 0        self.UP = 0        self.B3 = 0        self.B4 = 0        self.B5 = 0        self.B6 = 0        self.B7 = 0        self.X1 = 0        self.X2 = 0        self.X3 = 0    def short(self, dat):        if dat > 32767:            return dat - 65536        else:            return dat        def setReg(self, dat, reg):        buf = bytearray(2)        buf[0] = reg        buf[1] = dat        self.i2c.send(buf, BMP180_I2C_ADDR)            def getReg(self, reg):        buf = bytearray(1)        buf[0] = reg        self.i2c.send(buf, BMP180_I2C_ADDR)        t = self.i2c.recv(1, BMP180_I2C_ADDR)        return t[0]        def get2Reg(self, reg):        a = self.getReg(reg)        b = self.getReg(reg + 1)        return a*256 + b     def measure(self):        self.setReg(0x2E, 0xF4)        pyb.delay(5)        self.UT = self.get2Reg(0xF6)        self.setReg(0x34, 0xF4)        pyb.delay(5)        self.UP = self.get2Reg(0xF6)    def getTemp(self):        self.measure()        self.X1 = (self.UT - self.AC6) * self.AC5/(1<<15)        self.X2 = self.MC * (1<<11) / (self.X1 + self.MD)        self.B5 = self.X1 + self.X2        return (self.B5 + 8)/160            def getPress(self):        self.getTemp()        self.B6 = self.B5 - 4000        self.X1 = (self.B2 * (self.B6*self.B6/(1<<12))) / (1<<11)        self.X2 = (self.AC2 * self.B6)/(1<<11)        self.X3 = self.X1 + self.X2        self.B3 = ((self.AC1*4+self.X3) + 2)/4        self.X1 = self.AC3 * self.B6 / (1<<13)        self.X2 = (self.B1 * (self.B6*self.B6/(1<<12))) / (1<<16)        self.X3 = (self.X1 + self.X2 + 2)/4        self.B4 = self.AC4 * (self.X3 + 32768)/(1<<15)        self.B7 = (self.UP-self.B3) * 50000        if self.B7 < 0x80000000:            p = (self.B7*2)/self.B4        else:            p = (self.B7/self.B4) * 2        self.X1 = (p/(1<<8))*(p/(1<<8))        self.X1 = (self.X1 * 3038)/(1<<16)        self.X2 = (-7357*p)/(1<<16)        p = p + (self.X1 + self.X2 + 3791)/16        return p        def getAltitude(self):        p = self.getPress()        return (44330*(1-(p/101325)**(1/5.255)))    def get(self):        t = []        t.append(self.getPress())        t.append(self.getAltitude())        t.append(self.getTemp())        return t

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