[BUG] stepper.cpp - expression must have a constant value / cannot be used as a constant

[classicrocker883]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

Okay I am not sure if this is a bug with negative implications, or it is just whatever it is.

So everything compiles fine, no errors or warnings to note otherwise.
However, when I go to this file:

Marlin\src\module\stepper.cpp: line ~530

constexpr uint32_t timer_setup_ns = cycles_to_ns(timer_read_add_and_store_cycles);
constexpr hal_timer_t PULSE_HIGH_TICK_COUNT = ns_to_pulse_timer_ticks(_min_pulse_high_ns - _MIN(_min_pulse_high_ns, timer_setup_ns));
constexpr hal_timer_t PULSE_LOW_TICK_COUNT = ns_to_pulse_timer_ticks(_min_pulse_low_ns - _MIN(_min_pulse_low_ns, timer_setup_ns));

I get red squiggles under these 3 constexpr and this error:

expression must have a constant value
stepper.cpp(528, 37): the value of variable "SystemCoreClock" (declared at line 51 of "\.platformio\packages\framework-arduinoststm32\system\Drivers\CMSIS\Device\ST\STM32F1xx\Include\system_stm32f1xx.h") cannot be used as a constant
stepper.cpp(529, 47): expression cannot be interpreted
stepper.cpp(530, 46): expression cannot be interpreted

removing constexpr from each 3 will remove this error and also compile successfully.

Bug Timeline

No response

Expected behavior

Expect no warnings/errors

Actual behavior

Compiles correctly.
Everything else seems to be fine,
except this error appears.

Steps to Reproduce

1. Load STM32 configs (Ender-3V2)
2. STM32F103RE_creality in platformio.ini
3. Build
4. navigate to Marlin\src\module\stepper.cpp
5. warnings should popup under "PROBLEMS" tab / red squiggles appear under code in question

Version of Marlin Firmware

bugfix-2.1.x

Printer model

No response

Electronics

No response

LCD/Controller

No response

Other add-ons

No response

Bed Leveling

None

Your Slicer

None

Host Software

None

Don't forget to include

• A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

No response

[dbuezas]

Same here

[thisiskeithb]

So everything compiles fine, no errors or warnings to note otherwise.

Closing since there are no compile errors or warnings.

[thisiskeithb]

@classicrocker883: Please only open bug reports for confirmed bugs.

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