diff options
Diffstat (limited to 'klippy/heater.py')
| -rw-r--r-- | klippy/heater.py | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/klippy/heater.py b/klippy/heater.py index 359c80bd..909307ac 100644 --- a/klippy/heater.py +++ b/klippy/heater.py @@ -21,7 +21,11 @@ MAX_HEAT_TIME = 5.0 AMBIENT_TEMP = 25. PWM_MAX = 255 +class error(Exception): + pass + class PrinterHeater: + error = error def __init__(self, printer, config): self.printer = printer self.config = config @@ -29,6 +33,8 @@ class PrinterHeater: self.thermistor_c = config.getchoice('thermistor_type', Thermistors) self.pullup_r = config.getfloat('pullup_resistor', 4700.) self.min_extrude_temp = config.getfloat('min_extrude_temp', 170.) + self.min_temp = self.config.getfloat('min_temp') + self.max_temp = self.config.getfloat('max_temp') self.can_extrude = (self.min_extrude_temp <= 0.) self.lock = threading.Lock() self.last_temp = 0. @@ -50,8 +56,8 @@ class PrinterHeater: self.mcu_pwm = self.printer.mcu.create_pwm( heater_pin, 0, MAX_HEAT_TIME) self.mcu_adc = self.printer.mcu.create_adc(thermistor_pin) - min_adc = self.calc_adc(self.config.getfloat('max_temp')) - max_adc = self.calc_adc(self.config.getfloat('min_temp')) + min_adc = self.calc_adc(self.max_temp) + max_adc = self.calc_adc(self.min_temp) self.mcu_adc.set_minmax( SAMPLE_TIME, SAMPLE_COUNT, minval=min_adc, maxval=max_adc) self.mcu_adc.set_adc_callback(REPORT_TIME, self.adc_callback) @@ -102,6 +108,9 @@ class PrinterHeater: #logging.debug("temp: %.3f %f = %f" % (read_time, read_value, temp)) # External commands def set_temp(self, print_time, degrees): + if degrees and (degrees < self.min_temp or degrees > self.max_temp): + raise error("Requested temperature (%.1f) out of range (%.1f:%.1f)" + % (degrees, self.min_temp, self.max_temp)) with self.lock: self.target_temp = degrees def get_temp(self): |