34 lines
659 B
Python
34 lines
659 B
Python
"""
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Example for MPR121 Capacitive Touch Sensor.
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Available from multiple vendors.
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"""
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import sys
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import serial
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import time
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import struct
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import random
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from i2cdriver import I2CDriver
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class MPR121:
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def __init__(self, i2, a = 0x5a):
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self.i2 = i2
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self.a = a
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self.i2.regwr(self.a, 0x5e, 0x0c)
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def read(self):
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""" Return 12 touch detection flags """
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(tb,) = struct.unpack("<H", self.i2.regrd(0x5a, 0, 2))
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return [((tb >> i) & 1) for i in range(12)]
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if __name__ == '__main__':
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i2 = I2CDriver(sys.argv[1])
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i2.reset()
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d = MPR121(i2)
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while 1:
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print(d.read())
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time.sleep(.1)
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