|
| 1 | +""" |
| 2 | +The MIT License (MIT) |
| 3 | +
|
| 4 | +Copyright (c) 2023 Arduino SA |
| 5 | +
|
| 6 | +Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | +of this software and associated documentation files (the "Software"), to deal |
| 8 | +in the Software without restriction, including without limitation the rights |
| 9 | +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | +copies of the Software, and to permit persons to whom the Software is |
| 11 | +furnished to do so, subject to the following conditions: |
| 12 | +
|
| 13 | +The above copyright notice and this permission notice shall be included in |
| 14 | +all copies or substantial portions of the Software. |
| 15 | +
|
| 16 | +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | +THE SOFTWARE. |
| 23 | +
|
| 24 | +HS3003 driver for MicroPython. |
| 25 | +
|
| 26 | +Example usage: |
| 27 | +
|
| 28 | +import time |
| 29 | +from hs3003 import HS3003 |
| 30 | +from machine import Pin, I2C |
| 31 | +
|
| 32 | +bus = I2C(1, scl=Pin(15), sda=Pin(14)) |
| 33 | +hts = HS3003(bus) |
| 34 | +
|
| 35 | +while True: |
| 36 | + rH = hts.humidity() |
| 37 | + temp = hts.temperature() |
| 38 | + print ("rH: %.2f%% T: %.2fC" %(rH, temp)) |
| 39 | + time.sleep_ms(100) |
| 40 | +""" |
| 41 | + |
| 42 | +import struct |
| 43 | + |
| 44 | + |
| 45 | +class HS3003: |
| 46 | + def __init__(self, bus, address=0x44): |
| 47 | + self.bus = bus |
| 48 | + self.address = address |
| 49 | + |
| 50 | + def _read_data(self): |
| 51 | + # Init measurement mode |
| 52 | + self.bus.writeto(self.address, b"") |
| 53 | + # Data fetch |
| 54 | + return struct.unpack(">HH", self.bus.readfrom(self.address, 4)) |
| 55 | + |
| 56 | + def humidity(self): |
| 57 | + """Returns the relative humidity in percent.""" |
| 58 | + h, t = self._read_data() |
| 59 | + return ((h & 0x3FFF) / 16383) * 100 |
| 60 | + |
| 61 | + def temperature(self): |
| 62 | + """Returns the temperature in degrees Celsius.""" |
| 63 | + h, t = self._read_data() |
| 64 | + return ((t >> 2) / 16383) * 165 - 40 |
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