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docs: Note that i2c is not noise resilient in Config_Reference.md 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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Kevin O'Connor 2022-06-16 18:38:31 -04:00
parent 3f3713ee97
commit 55d1c3728d
1 changed files with 10 additions and 2 deletions
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docs/Config_Reference.md
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@ -4199,6 +4199,13 @@ SPI bus.
The following parameters are generally available for devices using an The following parameters are generally available for devices using an
I2C bus. I2C bus.
Note that Klipper's current micro-controller support for i2c is
generally not tolerant to line noise. Unexpected errors on the i2c
wires may result in Klipper raising a run-time error. Klipper's
support for error recovery varies between each micro-controller type.
It is generally recommended to only use i2c devices that are on the
same printed circuit board as the micro-controller.
``` ```
#i2c_address: #i2c_address:
# The i2c address of the device. This must specified as a decimal # The i2c address of the device. This must specified as a decimal
@ -4212,6 +4219,7 @@ I2C bus.
# the type of micro-controller. # the type of micro-controller.
#i2c_speed: #i2c_speed:
# The I2C speed (in Hz) to use when communicating with the device. # The I2C speed (in Hz) to use when communicating with the device.
# On some micro-controllers changing this value has no effect. The # The Klipper implementation on most micro-controllers is hard-coded
# default is 100000. # to 100000 and changing this value has no effect. The default is
# 100000.
``` ```