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tmc5160: diag0 support (#3159)

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Allow for diag0 only hardware to use sensorless homing.

Signed-off-by:  Trevor Jones <trevorjones141@gmail.com>
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Trevor Jones 2020-08-09 06:17:51 -06:00 • committed by GitHub
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docs/Sensorless_Homing.md
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@ -59,6 +59,8 @@ homing_retract_dist: 0
The name of the virtual end stop pin is derived from the name of the TMC2130 section. The `homing_retract_dist` setting should be set to zero to disable the second homing move as a second pass is not needed, and attempts to do so are error prone.
The TMC2130 and TMC5160 have both a `diag0_pin` and `diag1_pin` in most known hardware the `diag1_pin` is appropriate. In order for klipper to correctly configure the driver for sensorless homing, the correct configuration property name `diag0_pin` or `diag1_pin` must be used. Which is used is determined by which driver pin is connected to the MCU pin.
ATTENTION: This guide only mentions the mandatory parameters and the ones needed to set up sensorless homing. There are many other options to configure on a TMC2130, make sure to take a look at `config/example-extras.cfg` for all the available options.
## Testing of SPI/UART communication