Pin aliases bug, please reopen issue

peac · October 26, 2022, 3:54pm

Hi,

I’ve been redirected from the discord to discourse to ask that this stale issue is reopened :

github.com/Klipper3d/klipper

board_pins aliases in multi-mcu system

opened 10:36PM - 22 Jan 22 UTC

closed 12:07AM - 07 Mar 22 UTC

jsteele22

Stale

I'm not sure if this is a bug or a feature request, or something in between. …I have a custom system with several (2, but possibly more) MCUs attached to a Raspberry pi. The ability to easily integrate multiple MCUs is, IMO, one of the strongest "selling" points for klipper! Today I tried to tidy up my configuration using the [board_pins] feature. Based on my reading of the docs, I tried the following in my printer.cfg (highly abbreviated): [board_pins mcu_pins] mcu: mcu aliases: extruder_heater=PA7 [board_pins mcu1_pins] mcu: mcu1 aliases: extruder_sensor=PA1 [extruder] heater_pin: extruder_heater sensor_pin: extruder_sensor # Nope This does not work. Klipper looks for and cannot find an alias 'extruder_sensor' on the first MCU ('mcu'), even though it was explicitly declared to be on 'mcu1' I had to modify all the references to mcu1 aliases to explicitly indicate mcu1, as follows: [extruder] heater_pin: extruder_heater sensor_pin: mcu1:extruder_sensor # Works, but not so nice... In this form it works. But this means that in order to use pin aliases, one must still explicitly reference some details of the hardware setup. This kind of ruins the nice abstraction that could otherwise be achieved. I don't know if this was an oversight, a bug, a well-thought-out policy, or a "get-to-it later" situation. But thanks for listening!

Thank you

Topic		Replies	Views
BUG: Multi use pins / shared pins don't work if aliased General Discussion	13	1594	December 5, 2022
I have problems with alias board_pins General Discussion	2	624	November 9, 2022
Intentional or an aliasing related bug? Developers	7	1415	January 13, 2022
Strange "Alias" Behaviour on Toolhead Extruder Thermistor General Discussion	7	271	November 25, 2023
Multiple aliases referencing the same pin Developers	3	1909	April 26, 2022

Pin aliases bug, please reopen issue

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