Marlin: G35 Outputs long string then hangs firmware

[RealDeuce]

Bug Description

The tramming_point_name[] array is PROGMEM and points to PGMSTR() strings... this apparently means it can't be used with SERIAL_ECHOPAIR() on Arduino.

On my CR-10 v3 with original Creality board, the first output sent a long string of characters to the serial port and then hung.

My Configurations

MyConfig.zip

Steps to Reproduce

1. Build for original Creality board with ASSISTED_TRAMMING
2. Execute G35 command over serial port.

Expected behavior:

Instructions for tramming are printed

Actual behavior:

The first tramming point name is printed as a very long sequence of letters followed by the instructions after which the firmware hangs and a reboot is required.

Additional Information

Fixed for me with this commit, but the pull request requirements are too onerous for me to be arsed. I know the patch isn't sufficient as-is, but I'm too busy to follow it through properly.

Basically, I just use serialprintPGM((char *)pgm_read_ptr(&tramming_point_name[i])); for the names and it works for me now.

[sjasonsmith]

@Speaka reported the same issue in #19896 and verified that the included fix in this Bug report worked.
They also volunteered to prepare a PR for it, so hopefully we will see that show up in the next several days.

[Speaka]

Please test with this PR.

[sjasonsmith]

Thanks for stepping up and filing the PR @Speaka!

[RealDeuce]

Works for me, thanks a lot @Speaka!