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python-itho-wpu
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refactor(itho-wpu): check messageclass in a central function

This commit is contained in:
Pim van den Berg 2020-11-15 15:09:32 +01:00
parent 1a57a8bd9b
commit 273a22a4c0
1 changed files with 19 additions and 24 deletions
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43
itho-wpu.py
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@ -42,17 +42,19 @@ def export_to_influxdb(action, measurements):
print('Failed to write to influxdb: ', e)
actions = {
"getnodeid": [0x90, 0xE0],
"getserial": [0x90, 0xE1],
"getdatatype": [0xA4, 0x00],
"getdatalog": [0xA4, 0x01],
}
def parse_args():
parser = argparse.ArgumentParser(description='Itho WPU i2c master')
actions = [
"getnodeid",
"getserial",
"getdatatype",
"getdatalog",
]
parser.add_argument('--action', nargs='?', required=True,
choices=actions, help="Execute an action")
choices=actions.keys(), help="Execute an action")
parser.add_argument('--loglevel', nargs='?',
choices=["debug", "info", "warning", "error", "critical"],
help="Loglevel")
@ -126,12 +128,6 @@ class I2CMaster:
self.queue = queue
def compose_request(self, action):
actions = {
"getnodeid": [0x90, 0xE0],
"getserial": [0x90, 0xE1],
"getdatatype": [0xA4, 0x00],
"getdatalog": [0xA4, 0x01],
}
# 0x80 = source, 0x04 = msg_type, 0x00 = length
request = [0x80] + actions[action] + [0x04, 0x00]
request.append(self.calculate_checksum(request))
@ -166,10 +162,20 @@ class I2CMaster:
self.i.close()
def is_messageclass_valid(action, response):
if int(response[1], 0) != actions[action][0] and int(response[2], 0) != actions[action][1]:
logger.error(f"Response MessageClass != {actions[action][0]} {actions[action][1]} "
f"({action}), but {response[1]} {response[2]}")
return False
return True
def process_response(action, response, args):
if int(response[3], 0) != 0x01:
logger.error(f"Response MessageType != 0x01 (response), but {response[3]}")
return
if not is_messageclass_valid(action, response):
return
if action == "getdatalog":
measurements = process_datalog(response)
@ -182,10 +188,6 @@ def process_response(action, response, args):
def process_nodeid(response):
if int(response[1], 0) != 0x90 and int(response[2], 0) != 0xE0:
logger.error(f"Response MessageClass != 0x90 0xE0 (getnodeid), but {response[1]} {response[2]}")
return
manufacturergroup = ((int(response[5], 0) << 8) + int(response[6], 0))
manufacturer = int(response[7], 0)
hardwaretype = int(response[8], 0)
@ -202,18 +204,11 @@ def process_nodeid(response):
def process_serial(response):
if int(response[1], 0) != 0x90 and int(response[2], 0) != 0xE1:
logger.error(f"Response MessageClass != 0x90 0xE1 (getserial), but {response[1]} {response[2]}")
return
serial = (int(response[5], 0) << 16) + (int(response[6], 0) << 8) + int(response[7], 0)
logger.info(f"Serial: {serial}")
def process_datalog(response):
if int(response[1], 0) != 0xA4 and int(response[2], 0) != 0x01:
logger.error(f"Response MessageClass != 0xA4 0x01 (getdatalog), but {response[1]} {response[2]}")
return
# 0 = Byte
# 1 = UnsignedInt
# 2 = SignedIntDec2