mirror of https://github.com/Desuuuu/klipper.git
26 lines
921 B
Python
26 lines
921 B
Python
|
# SPI DAC DAC084S085 implementation
|
||
|
|
#
|
||
|
|
# Copyright (C) 2021 Lorenzo Franco <lorenzo.franco@lorenzing.com>
|
||
|
|
#
|
||
|
|
# This file may be distributed under the terms of the GNU GPLv3 license.
|
||
|
|
|
||
|
|
from . import bus
|
||
|
|
|
||
|
|
class dac084S085:
|
||
|
|
def __init__(self, config):
|
||
|
|
self.spi = bus.MCU_SPI_from_config(
|
||
|
|
config, 1, pin_option="enable_pin", default_speed=10000000)
|
||
|
|
scale = config.getfloat('scale', 1., above=0.)
|
||
|
|
for chan, name in enumerate("ABCD"):
|
||
|
|
val = config.getfloat('channel_%s' % (name,), None,
|
||
|
|
minval=0., maxval=scale)
|
||
|
|
if val is not None:
|
||
|
|
self.set_register(chan, int(val * 255. / scale))
|
||
|
|
def set_register(self, chan, value):
|
||
|
|
b1 = (chan << 6) | (1 << 4) | ((value >> 4) & 0x0f)
|
||
|
|
b2 = (value << 4) & 0xf0
|
||
|
|
self.spi.spi_send([b1, b2])
|
||
|
|
|
||
|
|
def load_config_prefix(config):
|
||
|
|
return dac084S085(config)
|