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Allow heaters to stay full On when PWM=127

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In previous version, even with PWM = 127, the system turns the FET off
and then on in the next cycle. This bevavior may increase the FET heat
dissipation.
It was fixed keeping the FET always On when PWM=127.
This commit is contained in:
Alex Borro 2013-11-27 18:13:38 -02:00
parent a94e588765
commit 35905ea4f9
1 changed files with 11 additions and 10 deletions
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21
Marlin/temperature.cpp
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@ -1057,41 +1057,42 @@ ISR(TIMER0_COMPB_vect)
#ifdef HEATERS_PARALLEL #ifdef HEATERS_PARALLEL
WRITE(HEATER_1_PIN,1); WRITE(HEATER_1_PIN,1);
#endif #endif
} } else WRITE(HEATER_0_PIN,0);
#if EXTRUDERS > 1 #if EXTRUDERS > 1
soft_pwm_1 = soft_pwm[1]; soft_pwm_1 = soft_pwm[1];
if(soft_pwm_1 > 0) WRITE(HEATER_1_PIN,1); if(soft_pwm_1 > 0) WRITE(HEATER_1_PIN,1); else WRITE(HEATER_1_PIN,0);
#endif #endif
#if EXTRUDERS > 2 #if EXTRUDERS > 2
soft_pwm_2 = soft_pwm[2]; soft_pwm_2 = soft_pwm[2];
if(soft_pwm_2 > 0) WRITE(HEATER_2_PIN,1); if(soft_pwm_2 > 0) WRITE(HEATER_2_PIN,1); else WRITE(HEATER_2_PIN,0);
#endif #endif
#if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1 #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
soft_pwm_b = soft_pwm_bed; soft_pwm_b = soft_pwm_bed;
if(soft_pwm_b > 0) WRITE(HEATER_BED_PIN,1); if(soft_pwm_b > 0) WRITE(HEATER_BED_PIN,1); else WRITE(HEATER_BED_PIN,0);
#endif #endif
#ifdef FAN_SOFT_PWM #ifdef FAN_SOFT_PWM
soft_pwm_fan = fanSpeedSoftPwm / 2; soft_pwm_fan = fanSpeedSoftPwm / 2;
if(soft_pwm_fan > 0) WRITE(FAN_PIN,1); if(soft_pwm_fan > 0) WRITE(FAN_PIN,1); else WRITE(FAN_PIN,0);
#endif #endif
} }
if(soft_pwm_0 <= pwm_count) { if(soft_pwm_0 < pwm_count) {
WRITE(HEATER_0_PIN,0); WRITE(HEATER_0_PIN,0);
#ifdef HEATERS_PARALLEL #ifdef HEATERS_PARALLEL
WRITE(HEATER_1_PIN,0); WRITE(HEATER_1_PIN,0);
#endif #endif
} }
#if EXTRUDERS > 1 #if EXTRUDERS > 1
if(soft_pwm_1 <= pwm_count) WRITE(HEATER_1_PIN,0); if(soft_pwm_1 < pwm_count) WRITE(HEATER_1_PIN,0);
#endif #endif
#if EXTRUDERS > 2 #if EXTRUDERS > 2
if(soft_pwm_2 <= pwm_count) WRITE(HEATER_2_PIN,0); if(soft_pwm_2 < pwm_count) WRITE(HEATER_2_PIN,0);
#endif #endif
#if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1 #if defined(HEATER_BED_PIN) && HEATER_BED_PIN > -1
if(soft_pwm_b <= pwm_count) WRITE(HEATER_BED_PIN,0); if(soft_pwm_b < pwm_count) WRITE(HEATER_BED_PIN,0);
#endif #endif
#ifdef FAN_SOFT_PWM #ifdef FAN_SOFT_PWM
if(soft_pwm_fan <= pwm_count) WRITE(FAN_PIN,0); if(soft_pwm_fan < pwm_count) WRITE(FAN_PIN,0);
#endif #endif
pwm_count += (1 << SOFT_PWM_SCALE); pwm_count += (1 << SOFT_PWM_SCALE);