def post(self, request, format=None):
log.info("User requested that we stop the current program")
api_interface = APIInterface()
# Turn off the heater
api_interface.deactivate()
# Delete the program and driver from Redis so that the backend realizes we're done
api_interface.clear()
log.info("Program stopped successfully")
return Response(status=status.HTTP_200_OK)
def get(self, request, format=None):
api_interface = APIInterface()
out = {
"step": api_interface.current_step,
"temp": api_interface.current_temp,
"target": api_interface.target_temp,
"step_time_remaining": api_interface.step_time_remaining,
"program_time_remaining": api_interface.program_time_remaining,
"program": api_interface.program
}
return Response(out, status=status.HTTP_200_OK)
def post(self, request, format=None):
api_interface = APIInterface()
try:
# look up the driver and program in the database
driver = models.Driver.objects.get(id=request.data['driver'])
program = models.Program.objects.get(id=request.data['program'])
log.info(
"Received request to start program: ID: {id}, NAME: {name}".
format(id=program.id, name=program.name))
# convert to JSON, which our Python backend is expecting
json_driver = serializers.DriverSerializer(driver)
json_program = serializers.ProgramSerializer(program)
# update the selected driver and program in Redis, so that our backend can know which ones to use
api_interface.driver = json_driver.data
api_interface.program = json_program.data['steps']
log.info("Program steps: {steps}".format(
steps=str(json_program.data['steps'])))
except Exception as e:
log.exception("Could not start program")
return Response(status=status.HTTP_400_BAD_REQUEST,
data={"error": e.message})
else:
# Flip the switch and the backend will start running the program once it detects the change (usually within a second)
api_interface.activate()
log.info("Program started.")
return Response(status=status.HTTP_200_OK)
def post(self, request, format=None):
api_interface = APIInterface()
try:
# look up the driver and program in the database
driver = models.Driver.objects.get(id=request.data['driver'])
program = models.Program.objects.get(id=request.data['program'])
log.info("Received request to start program: ID: {id}, NAME: {name}".format(id=program.id, name=program.name))
# convert to JSON, which our Python backend is expecting
json_driver = serializers.DriverSerializer(driver)
json_program = serializers.ProgramSerializer(program)
# update the selected driver and program in Redis, so that our backend can know which ones to use
api_interface.driver = json_driver.data
api_interface.program = json_program.data['steps']
log.info("Program steps: {steps}".format(steps=str(json_program.data['steps'])))
except Exception as e:
log.exception("Could not start program")
return Response(status=status.HTTP_400_BAD_REQUEST, data={"error": e.message})
else:
# Flip the switch and the backend will start running the program once it detects the change (usually within a second)
api_interface.activate()
log.info("Program started.")
return Response(status=status.HTTP_200_OK)
def post(self, request, format=None):
log.info("User requested that we stop the current program")
api_interface = APIInterface()
# Turn off the heater
api_interface.deactivate()
# Delete the program and driver from Redis so that the backend realizes we're done
api_interface.clear()
log.info("Program stopped successfully")
return Response(status=status.HTTP_200_OK)
from device import heater
from interface import APIInterface
from device import thermometer
import Adafruit_MAX31855.MAX31855 as MAX31855
import RPi.GPIO as GPIO
# Disable the temperature probe logger because it produces annoying and useless messages
maxlog = logging.getLogger('Adafruit_MAX31855.MAX31855')
maxlog.disabled = True
# Set up a logger for application notifications and errors
log = logging.getLogger("heater")
# We use rotating log files so that if there is a crash mid-run, we will lose the least amount possible.
# 5120 bytes is around 50 lines of log messages
handler = RotatingFileHandler('/var/log/piwarmer/heater.log',
maxBytes=5120,
backupCount=10000)
formatter = logging.Formatter(
'%(asctime)s\t%(name)s\t%(levelname)s\t\t%(message)s')
handler.setFormatter(formatter)
log.addHandler(handler)
log.setLevel(logging.DEBUG)
if __name__ == "__main__":
api_interface = APIInterface()
thermometer = thermometer.Thermometer(MAX31855.MAX31855(24, 23, 18))
heater = heater.Heater(GPIO)
with ProgramRunner(api_interface, thermometer, heater) as program:
program.run()
def post(self, request, format=None):
api_interface = APIInterface()
api_interface.skip_step()
log.info("User skipped a step")
return Response(status=status.HTTP_200_OK)
def post(self, request, format=None):
api_interface = APIInterface()
api_interface.skip_step()
log.info("User skipped a step")
return Response(status=status.HTTP_200_OK)