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AnHardt a129078927 Add an emergency-command parser to MarlinSerial (supporting M108)
Add an emergency-command parser to MarlinSerial's RX interrupt.

The parser tries to find and execute M108,M112,M410 before the commands disappear in the RX-buffer.

To avoid false positives for M117, comments and commands followed by filenames (M23, M28, M30, M32, M33) are filtered.

This enables Marlin to receive and react on the Emergency command at all times - regardless of whether the buffers are full or not. It remains to convince hosts to send the commands. To inform the hosts about the new feature a new entry in the M115-report was made. "`EMERGENCY_CODES:M112,M108,M410;`".

The parser is fast. It only ever needs two switch decisions and one assignment of the new state for every character.

One problem remains. If the host has sent an incomplete line before sending an emergency command the emergency command could be omitted when the parser is in `state_IGNORE`.
In that case the host should send "\ncommand\n"

Also introduces M108 to break the waiting for the heaters in M109, M190 and M303.

Rename `cancel_heatup` to `wait_for_heatup` to better see the purpose.
9 years ago
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Cartesio Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
Felix Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
Hephestos Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
Hephestos_2 Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
K8200 Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
K8400 Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
RepRapWorld/Megatronics Fix spelling in a config comment 9 years ago
RigidBot Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
SCARA Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
TAZ4 Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
WITBOX Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
adafruit/ST7565 Fix spelling in a config comment 9 years ago
delta Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
makibox Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago
tvrrug/Round2 Add an emergency-command parser to MarlinSerial (supporting M108) 9 years ago