def reconnect(hthp: HtHeatpump):
hthp.reconnect()
hthp.login()
yield
hthp.logout()
def main():
parser = argparse.ArgumentParser(
description=textwrap.dedent('''\
Command line tool to create a backup of the Heliotherm heat pump data points.
Example:
$ python3 %(prog)s --baudrate 9600 --csv backup.csv
'SP,NR=0' [Language]: VAL='0', MIN='0', MAX='4'
'SP,NR=1' [TBF_BIT]: VAL='0', MIN='0', MAX='1'
'SP,NR=2' [Rueckruferlaubnis]: VAL='1', MIN='0', MAX='1'
...
'''),
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog=textwrap.dedent('''\
DISCLAIMER
----------
Please note that any incorrect or careless usage of this program as well as
errors in the implementation can damage your heat pump!
Therefore, the author does not provide any guarantee or warranty concerning
to correctness, functionality or performance and does not accept any liability
for damage caused by this program or mentioned information.
Thus, use it on your own risk!
''') + "\r\n")
parser.add_argument(
"-d",
"--device",
default="/dev/ttyUSB0",
type=str,
help=
"the serial device on which the heat pump is connected, default: %(default)s"
)
parser.add_argument(
"-b",
"--baudrate",
default=115200,
type=int,
# the supported baudrates of the Heliotherm heat pump (HP08S10W-WEB):
choices=[9600, 19200, 38400, 57600, 115200],
help=
"baudrate of the serial connection (same as configured on the heat pump), default: %(default)s"
)
parser.add_argument("-j",
"--json",
type=str,
help="write the result to the specified JSON file")
parser.add_argument("-c",
"--csv",
type=str,
help="write the result to the specified CSV file")
parser.add_argument("-t",
"--time",
action="store_true",
help="measure the execution time")
parser.add_argument("-v",
"--verbose",
action="store_true",
help="increase output verbosity by activating logging")
parser.add_argument(
"--without-values",
action="store_true",
help=
"store heat pump data points without their current value (keep it blank)"
)
parser.add_argument(
"--max-retries",
default=2,
type=int,
choices=range(0, 11),
help=
"maximum number of retries for a data point request (0..10), default: %(default)s"
)
args = parser.parse_args()
# activate logging with level DEBUG in verbose mode
if args.verbose:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(level=logging.WARNING)
hp = HtHeatpump(args.device, baudrate=args.baudrate)
start = timer()
try:
hp.open_connection()
hp.login()
rid = hp.get_serial_number()
print("connected successfully to heat pump with serial number {:d}".
format(rid))
ver = hp.get_version()
print("software version = {} ({:d})".format(ver[0], ver[1]))
result = {}
for dp_type in ("SP", "MP"): # for all known data point types
result.update({dp_type: {}})
i = 0 # start at zero for each data point type
while True:
success = False
retry = 0
while not success and retry <= args.max_retries:
data_point = "{},NR={:d}".format(dp_type, i)
# send request for data point to the heat pump
hp.send_request(data_point)
# ... and wait for the response
try:
resp = hp.read_response()
# search for pattern "NAME=...", "VAL=...", "MAX=..." and "MIN=..." inside the answer
m = re.match(
r"^{},.*NAME=([^,]+).*VAL=([^,]+).*MAX=([^,]+).*MIN=([^,]+).*$"
.format(data_point), resp)
if not m:
raise IOError(
"invalid response for query of data point {!r} [{}]"
.format(data_point, resp))
name, value, max, min = m.group(
1, 2, 3, 4) # extract name, value, max and min
if args.without_values:
value = "" # keep it blank (if desired)
print("{!r} [{}]: VAL={!r}, MIN={!r}, MAX={!r}".format(
data_point, name, value, min, max))
# store the determined data in the result dict
result[dp_type].update({
i: {
"name": name,
"value": value,
"min": min,
"max": max
}
})
success = True
except Exception as e:
retry += 1
_logger.warning(
"try #{:d}/{:d} for query of data point {!r} failed: {!s}"
.format(retry, args.max_retries + 1, data_point,
e))
# try a reconnect, maybe this will help
hp.reconnect() # perform a reconnect
try:
hp.login(0) # and a new login
except Exception:
pass # ignore a potential problem
if not success:
_logger.error(
"query of data point {!r} failed after {:d} try/tries".
format(data_point, retry))
break
else:
i += 1
if args.json: # write result to JSON file
with open(args.json, 'w') as jsonfile:
json.dump(result, jsonfile, indent=4, sort_keys=True)
if args.csv: # write result to CSV file
with open(args.csv, 'w') as csvfile:
fieldnames = ["type", "number", "name", "value", "min", "max"]
writer = csv.DictWriter(csvfile,
delimiter='\t',
fieldnames=fieldnames)
writer.writeheader()
for dp_type, content in sorted(result.items(), reverse=True):
for i, data in content.items():
writer.writerow({
"type": dp_type,
"number": i,
"name": data["name"],
"value": data["value"],
"min": data["min"],
"max": data["max"]
})
except Exception as ex:
_logger.error(ex)
sys.exit(1)
finally:
hp.logout() # try to logout for an ordinary cancellation (if possible)
hp.close_connection()
end = timer()
# print execution time only if desired
if args.time:
print("execution time: {:.2f} sec".format(end - start))
sys.exit(0)