def run(self):
print "Thread PID no", self.taskid, "is readry!\n > Based on James Ward's PID algorithm"
drive = 0.0
lastdrive = 0.0
#based on James Ward's PID algorithm
while not self._stopevent.isSet():
#PID computation
#timestamp
next = time.time()
#get current boiler temp
latestTemp = self.maximBoiler.getTemp()
#controle de la chaudiere
lastdrive = drive
#if temperature read is correct, start algorithm
if (latestTemp > 0.5):
#calculate next time step
next += self.m_timeStep
#get current target temperature
cTargetTemp = self.getTargetTemp()
#calculate PID update
#boost mode only if boiler target temp is higher than 100C (ECO mode is 90)
if ((BOILER_BOOST_MODE == 1) and (cTargetTemp > 100)):
tgroupe = self.maximGroupe.getTemp()
#stop the boost mode when group temp is higher than boiler temp - 30C (approximate)
bBoostLimit = cTargetTemp - 30
#boost boiler target temperature if we are under a certain value
if ((tgroupe > 0.5) and (tgroupe < bBoostLimit)):
drive = self.pid_update(BOILER_MAX_TEMP - latestTemp,
latestTemp)
else:
drive = self.pid_update(cTargetTemp - latestTemp,
latestTemp)
else:
drive = self.pid_update(cTargetTemp - latestTemp,
latestTemp)
#drive = self.pid_update( self.getTargetTemp() - latestTemp, latestTemp )
#clamp the output power to sensible range
if (drive > 1.0):
drive = 1.0
if (drive < 0.0):
drive = 0.0
#update the boiler power (with PWM) if last state changed
if (drive != lastdrive):
drv = int(drive * 100)
self.setCurrentDrive(drv)
SSRControl.setBoilerPWM(drv)
#wait the remaining time (typically, slot = 1 second)
remain = next - time.time()
if (remain > 0.0):
self._stopevent.wait(remain)
def run(self):
print "Thread PID no", self.taskid, "is readry!\n > Based on James Ward's PID algorithm"
drive = 0.0
lastdrive = 0.0
#based on James Ward's PID algorithm
while not self._stopevent.isSet():
#PID computation
#timestamp
next = time.time()
#get current boiler temp
latestTemp = self.maximBoiler.getTemp()
#controle de la chaudiere
lastdrive = drive
#if temperature read is correct, start algorithm
if ( latestTemp > 0.5 ):
#calculate next time step
next += self.m_timeStep
#get current target temperature
cTargetTemp = self.getTargetTemp()
#calculate PID update
#boost mode only if boiler target temp is higher than 100C (ECO mode is 90)
if((BOILER_BOOST_MODE == 1) and (cTargetTemp > 100)):
tgroupe = self.maximGroupe.getTemp()
#stop the boost mode when group temp is higher than boiler temp - 30C (approximate)
bBoostLimit = cTargetTemp - 30
#boost boiler target temperature if we are under a certain value
if ((tgroupe > 0.5) and (tgroupe < bBoostLimit)):
drive = self.pid_update( BOILER_MAX_TEMP - latestTemp, latestTemp )
else:
drive = self.pid_update( cTargetTemp - latestTemp, latestTemp )
else:
drive = self.pid_update( cTargetTemp - latestTemp, latestTemp )
#drive = self.pid_update( self.getTargetTemp() - latestTemp, latestTemp )
#clamp the output power to sensible range
if ( drive > 1.0 ):
drive = 1.0
if ( drive < 0.0 ):
drive = 0.0
#update the boiler power (with PWM) if last state changed
if ( drive != lastdrive ):
drv = int(drive * 100)
self.setCurrentDrive( drv )
SSRControl.setBoilerPWM( drv )
#wait the remaining time (typically, slot = 1 second)
remain = next - time.time()
if ( remain > 0.0 ):
self._stopevent.wait(remain)
def quitApplicationNicely():
done = True
#be sure to shut down the boiler as well
SSRControl.setBoilerPWM(0)
saveSettings()
task1.stop()
task2.stop()
task3.stop()
task4.stop()
task5.stop()
task7.stop()
task6PID.stop()
time.sleep(0.1)
pygame.quit()
sys.exit(0)
def quitApplicationNicely():
done = True
#be sure to shut down the boiler as well
SSRControl.setBoilerPWM(0)
saveSettings()
task1.stop()
# task2.stop()
# task3.stop()
task4.stop()
task5.stop()
task7.stop()
task6PID.stop()
task8.stop()
time.sleep(0.1)
pygame.quit()
sys.exit(0)
