Added temperature window to M109. This is needed for systems with no overshoot PID.
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@ -58,6 +58,7 @@
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// Actual temperature must be close to target for this long before M109 returns success
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#define TEMP_RESIDENCY_TIME 10 // (seconds)
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#define TEMP_HYSTERESIS 3 // (degC) range of +/- temperatures considered "close" to the target one
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#define TEMP_WINDOW 1 // (degC) Window around target to start the recidency timer x degC early.
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// The minimal temperature defines the temperature below which the heater will not be enabled It is used
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// to check that the wiring to the thermistor is not broken.
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@ -104,12 +104,12 @@
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// M240 - Trigger a camera to take a photograph
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// M301 - Set PID parameters P I and D
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// M302 - Allow cold extrudes
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// M303 - PID relay autotune S<temperature> sets the target temperature. (default target temperature = 150C)
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// M400 - Finish all moves
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// M500 - stores paramters in EEPROM
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// M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
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// M502 - reverts to the default "factory settings". You still need to store them in EEPROM afterwards if you want to.
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// M503 - print the current settings (from memory not from eeprom)
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// M303 - PID relay autotune S<temperature> sets the target temperature. (default target temperature = 150C)
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// M999 - Restart after being stopped by error
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//Stepper Movement Variables
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@ -940,8 +940,8 @@ void process_commands()
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#ifdef TEMP_RESIDENCY_TIME
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/* start/restart the TEMP_RESIDENCY_TIME timer whenever we reach target temp for the first time
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or when current temp falls outside the hysteresis after target temp was reached */
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if ((residencyStart == -1 && target_direction && !isHeatingHotend(tmp_extruder)) ||
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(residencyStart == -1 && !target_direction && !isCoolingHotend(tmp_extruder)) ||
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if ((residencyStart == -1 && target_direction && (degHotend(tmp_extruder) >= (degTargetHotend(tmp_extruder)-TEMP_WINDOW))) ||
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(residencyStart == -1 && !target_direction && (degHotend(tmp_extruder) <= (degTargetHotend(tmp_extruder)+TEMP_WINDOW))) ||
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(residencyStart > -1 && labs(degHotend(tmp_extruder) - degTargetHotend(tmp_extruder)) > TEMP_HYSTERESIS) )
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{
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residencyStart = millis();
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