bissen21/Marlin_Firmware
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Allow increasing the software PWM frequency.

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This commit is contained in:
Erik van der Zalm
2013-06-09 12:52:49 +02:00
parent 8b0d82e9db
commit c8dcc7c208
4 changed files with 46 additions and 22 deletions
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36
Marlin/planner.cpp
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@ -473,22 +473,24 @@ void check_axes_activity()
disable_e2();
}
#if defined(FAN_PIN) && FAN_PIN > -1
#ifndef FAN_SOFT_PWM
#ifdef FAN_KICKSTART_TIME
static unsigned long fan_kick_end;
if (tail_fan_speed) {
if (fan_kick_end == 0) {
// Just starting up fan - run at full power.
fan_kick_end = millis() + FAN_KICKSTART_TIME;
tail_fan_speed = 255;
} else if (fan_kick_end > millis())
// Fan still spinning up.
tail_fan_speed = 255;
} else {
fan_kick_end = 0;
}
#endif//FAN_KICKSTART_TIME
analogWrite(FAN_PIN,tail_fan_speed);
#ifdef FAN_KICKSTART_TIME
static unsigned long fan_kick_end;
if (tail_fan_speed) {
if (fan_kick_end == 0) {
// Just starting up fan - run at full power.
fan_kick_end = millis() + FAN_KICKSTART_TIME;
tail_fan_speed = 255;
} else if (fan_kick_end > millis())
// Fan still spinning up.
tail_fan_speed = 255;
} else {
fan_kick_end = 0;
}
#endif//FAN_KICKSTART_TIME
#ifdef FAN_SOFT_PWM
fanSpeedSoftPwm = tail_fan_speed;
#else
analogWrite(FAN_PIN,tail_fan_speed);
#endif//!FAN_SOFT_PWM
#endif//FAN_PIN > -1
#ifdef AUTOTEMP
@ -757,7 +759,7 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
block->acceleration_st = axis_steps_per_sqr_second[Z_AXIS];
}
block->acceleration = block->acceleration_st / steps_per_mm;
block->acceleration_rate = (long)((float)block->acceleration_st * 8.388608);
block->acceleration_rate = (long)((float)block->acceleration_st * (16777216.0 / (F_CPU / 8.0)));
#if 0 // Use old jerk for now
// Compute path unit vector