def standalone():
db = Session()
while True:
try:
log.info("Opening serial port")
ser = serial.Serial('/dev/ttyACM0', 115200, timeout=10)
log.info("Serial port open")
while True:
line = ser.readline()
if line:
(node_id, seq_no, reading_type, reading,
checksum_sent, checksum_calc) = line.split(" ")
r = Reading()
r.node_id = int(node_id)
r.seq_no = int(seq_no)
r.reading_type = reading_type
r.reading = float(reading)
r.checksum_sent = int(checksum_sent, 16)
r.checksum_calc = int(checksum_calc, 16)
db.add(r)
db.commit();
log.info("Read line: %r", line)
except Exception:
log.exception("Exception")
time.sleep(20)
def standalone():
db = Session()
while True:
try:
log.info("Opening serial port")
serial = pyserial.Serial('COM3', 115200, timeout=10) #/dev/ttyACM0
log.info("Serial port open")
while True:
line = str(serial.readline(), 'ascii')
if line:
(node_id, seq_no, reading_type, temperature,
checksum_sent, checksum_calc) = line.split(" ")
reading = Reading()
reading.node_id = int(node_id)
reading.seq_no = int(seq_no)
reading.reading_type = reading_type
reading.reading = float(temperature)
reading.checksum_sent = int(checksum_sent, 16)
reading.checksum_calc = int(checksum_calc, 16)
db.add(reading)
db.commit()
log.info("Read line: %r", line)
setpoint = db.query(Setpoint).filter(Setpoint.zone_id == reading.node_id).order_by(desc(Setpoint.created_at)).first()
if setpoint is not None:
log.info("actual temp %s desired temp %s" % (reading.reading, setpoint.temperature))
if setpoint.temperature > reading.reading:
serial.write(struct.pack('!B', (reading.node_id << 1))) # flip that zone to on
log.info("opening zone %s" % reading.node_id)
else:
serial.write(struct.pack('!B', (reading.node_id << 1) + 1)) # flip that zone to off
log.info("closing zone %s" % reading.node_id)
except Exception:
log.exception("Exception")
time.sleep(20)
