标签: hts221

这个版本中，增加了休眠模式的管理，可以通过poweron()和poweroff()函数控制HTS221的休眠，降低功耗。 基本使用方法： from HTS221 import HTS221 hts=HTS221(1) hts.getTemp() hts.getHumi() hts.poweroff() hts.poweron()

小钢炮开发板带有HTS221温湿度传感器，这个温湿度传感器和STH22/si7002不同，不能直接读取温度和湿度，需要通过插值进行计算。 下面是我写的HTS221驱动，可以通过函数直接读取温度和湿度常数。   # HTS221 Humidity and temperature micropython drive # Author: shaoziyang # 2016.4   import pyb from pyb import I2C   HTS_I2C_ADDR = 0x5F   class HTS221(object):     def __init__(self, i2cn):         self.i2c = I2C(i2cn, I2C.MASTER, baudrate = 100000)         # HTS221 Temp Calibration registers         self.T0_OUT = self.get2Reg(0x3C)         self.T1_OUT = self.get2Reg(0x3E)         if self.T0_OUT=0x8000 :             self.T0_OUT -= 65536         if self.T1_OUT=0x8000 :             self.T1_OUT -= 65536         t1 = self.getReg(0x35)          self.T0_degC = (self.getReg(0x32) + (t1%4)*256)/8         self.T1_degC = (self.getReg(0x33)+ ((t1%16)/4)*256)/8         # HTS221 Humi Calibration registers         self.H0_OUT = self.get2Reg(0x36)         self.H1_OUT = self.get2Reg(0x3A)         self.H0_rH = self.getReg(0x30)/2         self.H1_rH = self.getReg(0x31)/2         # set av conf: T=4 H=8         self.setReg(0x81, 0x10)         # set CTRL_REG1: PD=1 BDU=1 ODR=1         self.setReg(0x85, 0x20)          def setReg(self, dat, reg):         buf = bytearray(2)         buf = reg         buf = dat         i2c = self.i2c         i2c.send(buf, HTS_I2C_ADDR)              def getReg(self, reg):         i2c = self.i2c         i2c.send(reg, HTS_I2C_ADDR)         t = i2c.recv(1, HTS_I2C_ADDR)         return t          def get2Reg(self, reg):         a = self.getReg(reg)         b = self.getReg(reg + 1)         return a + b * 256       def av(self, av=''):         i2c = self.i2c         if av != '':             #buf = bytearray(2)             #buf = 0x10;             #buf = av;             #i2c.send(buf, HTS_I2C_ADDR)             self.setReg(av, 0x10)         else:             #i2c.send(0x10, HTS_I2C_ADDR)             #t = i2c.recv(1, HTS_I2C_ADDR)             #return t             return self.getReg(0x10)          def T0_OUT(self):         return self.T0_OUT       def T1_OUT(self):         return self.T1_OUT       def T0_degC(self):         return self.T0_degC       def T1_degC(self):         return self.T1_degC       # calculate Temperature     def getTemp(self):         t = self.get2Reg(0x2A)         return self.T0_degC + (self.T1_degC - self.T0_degC) * (t - self.T0_OUT) / (self.T1_OUT - self.T0_OUT)       def H0_OUT(self):         return self.H0_OUT          def H1_OUT(self):         return self.H1_OUT              def H0_rH(self):         return self.H0_rH              def H1_rH(self):         return self.H1_rH       # calculate Humidity     def getHumi(self):         t = self.get2Reg(0x28)         return self.H0_rH + (self.H1_rH - self.H0_rH) * (t - self.H0_OUT) / (self.H1_OUT - self.H0_OUT)              将hts221.py复制到小钢炮的PYFLASH磁盘，然后就可以使用函数读取温度湿度 PYB: sync filesystems PYB: soft reboot MicroPython v1.7 on 2016-04-17; CANNON with STM32F401xE Type "help()" for more information. from hts221 import HTS221 hts=HTS221(1) hts.getTemp() 22.95221 hts.getHumi() 82.62943