31 lines
782 B
Python
31 lines
782 B
Python
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"""Hynitron CST816S touch contoller driver for MicroPython."""
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import watch
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class CST816S:
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"""Hynitron CST816S I2C touch controller driver."""
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def __init__(self):
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self.dbuf = bytearray(6)
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pass
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def get_event(self, queue):
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"""Receive a touch event.
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Check for a pending touch event and, if an event is pending,
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prepare it ready to go in the event queue.
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:return: True if an event is received, False otherwise.
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"""
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dbuf = self.dbuf
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try:
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watch.i2c.readfrom_mem_into(21, 1, dbuf)
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except OSError:
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return False
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queue[0] = dbuf[0]
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queue[1] = ((dbuf[2] & 0xf) << 8) + dbuf[3]
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queue[2] = ((dbuf[4] & 0xf) << 8) + dbuf[5]
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return True
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