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Implement automatic extruder/cold-end fan control based on temperature

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This change allows fan outputs to automatically turn on/off when the
associated nozzle temperature of an extruder is above/below a threshold
temperature.
Multiple extruders can be assigned to the same pin in which case the fan
will turn on when any selected extruder is above the threshold.
It also makes the M42 command compatible with the M106/M107 command.
The majority of the logic in this change will be evaluated by the
compiler at build time (i.e, low code space requirements).
This commit is contained in:
Robert F-C
2013-03-01 21:57:23 +11:00
parent 4eb81a69e6
commit 372e12f83f
4 changed files with 302 additions and 234 deletions
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18
Marlin/Configuration_adv.h
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@@ -71,6 +71,16 @@
// before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu)
//#define FAN_KICKSTART_TIME 100
// Configure fan pin outputs to automatically turn on/off when the associated
// extruder temperature is above/below EXTRUDER_AUTO_FAN_TEMPERATURE.
// Multiple extruders can be assigned to the same pin in which case
// the fan will turn on when any selected extruder is above the threshold.
#define EXTRUDER_0_AUTO_FAN_PIN -1
#define EXTRUDER_1_AUTO_FAN_PIN -1
#define EXTRUDER_2_AUTO_FAN_PIN -1
#define EXTRUDER_AUTO_FAN_TEMPERATURE 50
#define EXTRUDER_AUTO_FAN_SPEED 255 // == full speed
//===========================================================================
//=============================Mechanical Settings===========================
//===========================================================================
@@ -210,9 +220,9 @@
// However, THIS FEATURE IS UNSAFE!, as it will only work if interrupts are disabled. And the code could hang in an interrupt routine with interrupts disabled.
//#define WATCHDOG_RESET_MANUAL
#endif
// Enable the option to stop SD printing when hitting and endstops, needs to be enabled from the LCD menu when this option is enabled.
//#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
// Enable the option to stop SD printing when hitting and endstops, needs to be enabled from the LCD menu when this option is enabled.
//#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED
// extruder advance constant (s2/mm3)
//
@@ -276,7 +286,7 @@ const unsigned int dropsegments=5; //everything with less than this number of st
#else
#define BLOCK_BUFFER_SIZE 16 // maximize block buffer
#endif
//The ASCII buffer for recieving from the serial:
#define MAX_CMD_SIZE 96