31 lines
1.1 KiB
Python
31 lines
1.1 KiB
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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import pins
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class ad5206:
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def __init__(self, config):
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printer = config.get_printer()
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enable_pin_params = pins.get_printer_pins(printer).lookup_pin(
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'digital_out', config.get('enable_pin'))
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self.mcu = enable_pin_params['chip']
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self.pin = enable_pin_params['pin']
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self.mcu.add_config_object(self)
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scale = config.getfloat('scale', 1., above=0.)
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self.channels = [None] * 6
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for i in range(len(self.channels)):
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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.channels[i] = int(val * 256. / scale + .5)
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def build_config(self):
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for i, val in enumerate(self.channels):
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if val is not None:
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self.mcu.add_config_cmd(
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"send_spi_message pin=%s msg=%02x%02x" % (self.pin, i, val))
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def load_config_prefix(config):
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return ad5206(config)
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