tmc5262: Add stepper driver support#892
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TMCErrorCheck.get_status() previously hardcoded the TMC2240 ADC formula `(adc_value - 2038) / 7.7` for any driver that exposes an `adc_temp` field. Drivers with a different ADC width or scaling - for example the TMC5262 (9-bit ADC, formula `1.042*v - 264.6`) - had no way to use the shared monitor without reporting bogus temperatures. This adds an optional `temp_from_adc(adc_value) -> celsius` callable that drivers can attach to their `mcu_tmc` instance. TMCErrorCheck reads it via `getattr` at construction; if absent (TMC2240 and all existing drivers), the default formula is used unchanged. No behavior change for any existing driver. Signed-off-by: Rogerio Goncalves <rogerlz@gmail.com>
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Adds Kalico support for the ADI/Trinamic TMC5262 stepper driver:
65V/4.25A RMS, integrated MOSFETs, integrated current sense, SPI-only.
Validated on hardware (NorthPrint3D stepstick on Octopus Pro V1.1) and
in production (2x TMC5262 replacing TMC2240 on the X/Y axes).
Notable differences from TMC2240/TMC5160:
* Mandatory PLL init via klippy:connect handler.
* No GLOBALSCALER - current via CURRENT_RANGE + CURRENT_RANGE_SCALE +
IRUN, auto-ranged to fit run_current.
* GCONF.step_dir must be set for external step/dir mode.
* Stall signal via DO_CONF.do0_stall / do1_stall (not GCONF.diag*_stall).
* Temperature monitoring uses the new temp_from_adc hook.
Includes:
* klippy/extras/tmc5262.py - driver module
* test/test_tmc5262.py - unit tests
* test/klippy/tmc5262.{cfg,test} - integration test pair
* docs/Config_Reference.md - new [tmc5262] section
Signed-off-by: Rogerio Goncalves <rogerlz@gmail.com>
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Summary
Adds Kalico support for the ADI/Trinamic TMC5262 stepper driver (65V / 4.25A RMS, integrated MOSFETs, integrated current sense, SPI-only).
This branch is two commits:
tmc5262: Add stepper driver supportNew
[tmc5262]driver module, with the notable differences from TMC2240/TMC5160 handled:klippy:connecthandlerGLOBALSCALER— current is set viaCURRENT_RANGE+CURRENT_RANGE_SCALE+IRUN, auto-ranged to fitrun_currentGCONF.step_dirset for external step/dir modeDO_CONF.do0_stall/do1_stall(notGCONF.diag*_stall)temp_from_adchookIncludes the driver module, unit tests, a klippy integration test pair (
test/klippy/tmc5262.{cfg,test}), and a new[tmc5262]section indocs/Config_Reference.md.tmc: Allow drivers to provide a chip-specific ADC->°C conversionTMCErrorCheck.get_status()previously hardcoded the TMC2240 ADC formula(adc_value - 2038) / 7.7for any driver exposing anadc_tempfield. This adds an optionaltemp_from_adc(adc_value) -> celsiuscallable that a driver can attach to itsmcu_tmc; if absent the default formula is used unchanged. No behavior change for any existing driver.Test plan
pytest test/test_tmc5262.py— 53 passedtest/klippy/tmc5262.{cfg,test})🤖 Generated with Claude Code