1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
# AD5206 digipot code
#
# Copyright (C) 2017,2018 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
from . import bus
class ad5206:
def __init__(self, config):
self.spi = bus.MCU_SPI_from_config(
config, 0, pin_option="enable_pin", default_speed=25000000)
scale = config.getfloat('scale', 1., above=0.)
for i in range(6):
val = config.getfloat('channel_%d' % (i+1,), None,
minval=0., maxval=scale)
if val is not None:
self.set_register(i, int(val * 256. / scale + .5))
def set_register(self, reg, value):
self.spi.spi_send([reg, value])
def load_config_prefix(config):
return ad5206(config)
|
