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mcu: Initial support for multiple micro-controllers

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Add initial support for controlling multiple independent
micro-controllers from a single Klippy host instance.  Add basic
support for synchronizing the clocks of the additional mcus to the
main mcu's clock.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2017-08-14 11:46:35 -04:00
parent cee200e509
commit 3ccecc568d
5 changed files with 172 additions and 53 deletions
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11
config/example-extras.cfg
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@@ -42,6 +42,17 @@
# the fan is disabled. The default is 50 Celsius.
# Additional micro-controllers (one may define any number of sections
# with an "mcu" prefix). Additional micro-controllers introduce
# additional pins that may be configured as heaters, steppers, fans,
# etc.. For example, if an "[mcu extra_mcu]" section is introduced,
# then pins such as "extra_mcu:ar9" may then be used elsewhere in the
# config (where "ar9" is a hardware pin name or alias name on the
# given mcu).
#[mcu my_extra_mcu]
# See the "mcu" section in example.cfg for configuration parameters.
# Statically configured digital output pins (one may define any number
# of sections with a "static_digital_output" prefix). Pins configured
# here will be setup as a GPIO output during MCU configuration.