[BUG] M43 on STM32F4 doesn't work correctly

[ellensp]

Did you test the latest bugfix-2.0.x code?

Yes, and the problem still exists.

Bug Description

M43 does not show all used pins on a STM32F4 based controller

Expected behavior

M43 should list all pins

Actual behavior

M43 starts listing at PA8 onwards.

Steps to Reproduce

1. Download Marlin
2. set #define SERIAL_PORT -1
3. set #define MOTHERBOARD BOARD_MKS_ROBIN_NANO_V3
4. set #define PINS_DEBUGGING
5. Compile and upload
6. Send a M43, note missing pins

Version of Marlin Firmware

latest bugfix

Electronics

As an example MKS Robin Nano V3, but I know the skr V2 also has this issue

Additional information & file uploads

m43.txt

But this board has for example the following all not listed.
#define HEATER_BED_PIN PA0 // HOT BED
#define E1_DIR_PIN PA1
#define TEMP_1_PIN PA2 // TH2
#define E1_ENABLE_PIN PA3
#define HEATER_1_PIN PB0 // HEATER2

[ellensp]

This seems to have something to do with if the pin is analog capable it doesn't get listed.

[ellensp]

m43_expected.txt
This is the expected and current result.

[ellensp]

pr created, closing issue as superfluous

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.