[Marlin] M108 - Break and Continue
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📅Update: 2020/09/18
The command requires EMERGENCY_PARSER for full effectiveness. (Otherwise a full queue blocks the parser.)
Some G-code commands cause Marlin to go into a closed loop, waiting indefinitely for a certain state or event. For example, waits for the target temperature to be reached, and waits for an LCD click.
In the case of , the command stops waiting for the target temperature and continues processing G-code. This may result in "cold extrude" messages. For a full stop use .
In the case of the command acts like the LCD button, breaking out of and continuing to process the G-code queue.
With both EMERGENCY_PARSER and HOST_KEEPALIVE_FEATURE enabled, hosts will be able to prompt for continuation or cancellation, confirming with and cancelling with .
M108
Use as a "Continue" button in your host software.