serial: Indicate gcode cmd length longer than allowed. #4168
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Refers to issue #4123.
If a gcode command being sent via serial is longer than the MAX_CMD_SIZE and the gcode command does contain a checksum, the checksum given in the command may no longer be part of the command buffer and thus leads to a checksum error although the checksum is valid.
This code adds an error if the command length exceeds the cmd buffer size and thus ensures that the checksum no longer is validated.