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Automaton changes. Keep heater ON during probing only if pwm is high

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This commit is contained in:
leptun 2019-10-06 12:44:45 +03:00
parent 7650e2b60c
commit dde61bb444
1 changed files with 9 additions and 7 deletions
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16
Firmware/heatbed_pwm.cpp
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@ -140,14 +140,16 @@ ISR(TIMER0_OVF_vect) // timer compare interrupt service routine
case States::ONE: // state ONE - we'll either stay in ONE or change to FALL
OCR0B = 255;
slowCounter += slowInc; // this does software timer_clk/256 or less
if( slowCounter < pwm ){
return;
if (!bedPWMDisabled){ //disable heating as soon as possible
if( slowCounter < pwm ){
return;
}
if( (soft_pwm_bed << 1) >= (255 - slowInc - 1) ){ //@@TODO simplify & explain
// if slowInc==2, soft_pwm == 251 will be the first to do short drops to zero. 252 will keep full heating
return; // want full duty for the next ONE cycle again - so keep on heating and just wait for the next timer ovf
}
}
if( (soft_pwm_bed << 1) >= (255 - slowInc - 1) ){ //@@TODO simplify & explain
// if slowInc==2, soft_pwm == 251 will be the first to do short drops to zero. 252 will keep full heating
return; // want full duty for the next ONE cycle again - so keep on heating and just wait for the next timer ovf
}
if (bedPWMDisabled){
else if (pwm > 200){ //if duty cycle is high and BED PWM is disabled keep heater on. Prevents overcooling
return;
}
// otherwise moving towards FALL