diff options
| -rw-r--r-- | Sprinter/heater.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/Sprinter/heater.cpp b/Sprinter/heater.cpp index ebab2a5..69e9e86 100644 --- a/Sprinter/heater.cpp +++ b/Sprinter/heater.cpp @@ -32,6 +32,10 @@ void controllerFan(void); #endif +#ifdef EXTRUDERFAN_PIN + void extruderFan(void); +#endif + // Manage heater variables. For a thermistor or AD595 thermocouple, raw values refer to the // reading from the analog pin. For a MAX6675 thermocouple, the raw value is the temperature in 0.25 // degree increments (i.e. 100=25 deg). @@ -734,6 +738,10 @@ void PID_autotune(int PIDAT_test_temp) controllerFan(); //Check if fan should be turned on to cool stepper drivers down #endif +#ifdef EXTRUDERFAN_PIN + extruderFan(); //Check if fan should be turned on to cool extruder down +#endif + } #if defined (HEATER_USES_THERMISTOR) || defined (BED_USES_THERMISTOR) @@ -844,3 +852,24 @@ void controllerFan() } #endif +#ifdef EXTRUDERFAN_PIN +unsigned long lastExtruderCheck = 0; + +void extruderFan() +{ + if ((millis() - lastExtruderCheck) >= 2500) //Not a time critical function, so we only check every 2500ms + { + lastExtruderCheck = millis(); + + if (analog2temp(current_raw) < EXTRUDERFAN_DEC) + { + WRITE(EXTRUDERFAN_PIN, LOW); //... turn the fan off + } + else + { + WRITE(EXTRUDERFAN_PIN, HIGH); //... turn the fan on + } + } +} +#endif + |