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from modulators.OOKModulator import OOKModulator
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import numpy as np
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"""
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Nexus Temperature & Humidity Protocol
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"""
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class Nexus_TempHumidity:
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def __init__(self):
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pass
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def generateData(self, id=244, channel=1, temp=30, humidity=100):
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nibbles = self.generatePacket(id, channel, temp, humidity)
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data = []
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for i in range(9):
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mask = 0x08
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for j in range(4):
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if (nibbles[i] & mask):
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data.append(1)
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else:
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data.append(0)
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mask >>= 1
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return data
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def generateSamples(self, baseband_samplerate=2e6, id=244, channel=1, temp=30, humidity=100, numpyType=np.complex64):
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modulator = OOKModulator(baseband_samplerate=baseband_samplerate, am_frequency=22.471e3)
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bits = self.generateData(id, channel, temp, humidity)
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for repeat in range(0, 4):
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for j in bits:
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modulator.addModulation(500)
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modulator.addPadding(1000 * (1 + int(j)))
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modulator.addModulation(500)
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modulator.addPadding(4000)
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return modulator.getSamplesAndReset(numpyType)
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def generatePacket(self, id=244, channel=1, temp=30, humidity=100):
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temp = int(temp * 10)
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packet = [
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(id >> 4) & 0x0f,
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id & 0x0f,
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7 + channel,
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(temp >> 8) & 0x0f,
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(temp >> 4) & 0x0f,
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temp & 0x0f,
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0x0f,
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(humidity >> 4) & 0x0f,
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humidity & 0x0f
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]
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return packet
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