23 lines
785 B
Python
23 lines
785 B
Python
# AD5206 digipot code
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#
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# Copyright (C) 2017,2018 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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from . import bus
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class ad5206:
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def __init__(self, config):
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self.spi = bus.MCU_SPI_from_config(
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config, 0, pin_option="enable_pin", default_speed=25000000)
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scale = config.getfloat('scale', 1., above=0.)
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for i in range(6):
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val = config.getfloat('channel_%d' % (i+1,), None,
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minval=0., maxval=scale)
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if val is not None:
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self.set_register(i, int(val * 256. / scale + .5))
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def set_register(self, reg, value):
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self.spi.spi_send([reg, value])
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def load_config_prefix(config):
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return ad5206(config)
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