3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-08-06 05:24:02 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

mcp4728: Add initial support for the mcp4728 i2c dac chip

Browse source 
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-11-24 19:46:28 -05:00
parent 0da064ccd9
commit c2086796bf
3 changed files with 61 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

30
config/example-extras.cfg
View file

@ -639,6 +639,36 @@
# to not scale the 'wiper_x' parameters.
# Statically configured MCP4728 digital-to-analog converter connected
# via I2C bus (one may define any number of sections with an "mcp4728"
# prefix).
#[mcp4728 my_dac]
#i2c_mcu: mcu
# The name of the micro-controller that the MCP4451 chip is
# connected to. The default is "mcu".
#i2c_address:
# The i2c address that the chip is using on the i2c bus. The default
# is zero.
#channel_a:
#channel_b:
#channel_c:
#channel_d:
# The value to statically set the given MCP4728 channel to. This is
# typically set to a number between 0.0 and 1.0 with 1.0 being the
# highest voltage and 0.0 being the lowest voltage. However, the
# range may be changed with the 'scale' parameter (see below). If a
# channel is not specified then it is left unconfigured.
#scale:
# This parameter can be used to alter how the 'channel_x' parameters
# are interpreted. If provided, then the 'channel_x' parameters
# should be between 0.0 and 'scale'. This may be useful when the
# MCP4728 is used to set stepper voltage references. The 'scale' can
# be set to the equivalent stepper amperage if the MCP4728 were at
# its highest voltage, and then the 'channel_x' parameters can be
# specified using the desired amperage value for the stepper. The
# default is to not scale the 'channel_x' parameters.
# Configure an SX1509 I2C to GPIO expander. Due to the delay incurred
# by I2C communication you should NOT use SX1509 pins as stepper enable,
# step or dir pins or any other pin that requires fast bit-banging. They