mirror of
https://github.com/pommi/python-itho-wpu.git
synced 2024-11-21 13:52:15 +01:00
298 lines
10 KiB
Python
Executable File
298 lines
10 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
import argparse
|
|
import i2c_raw
|
|
import logging
|
|
import pigpio
|
|
import queue
|
|
import sys
|
|
import time
|
|
import os
|
|
import datetime
|
|
from collections import namedtuple
|
|
|
|
consolelogformatter = logging.Formatter("%(asctime)-15s %(levelname)s: %(message)s")
|
|
logger = logging.getLogger('stdout')
|
|
logger.setLevel(logging.INFO)
|
|
stdout_log_handler = logging.StreamHandler(sys.stdout)
|
|
stdout_log_handler.setFormatter(consolelogformatter)
|
|
logger.addHandler(stdout_log_handler)
|
|
|
|
|
|
def export_to_influxdb(action, measurements):
|
|
from influxdb import InfluxDBClient
|
|
|
|
influx_client = InfluxDBClient(
|
|
host=os.getenv('INFLUXDB_HOST', 'localhost'),
|
|
port=os.getenv('INFLUXDB_PORT', 8086),
|
|
username=os.getenv('INFLUXDB_USERNAME', 'root'),
|
|
password=os.getenv('INFLUXDB_PASSWORD', 'root'),
|
|
database=os.getenv('INFLUXDB_DATABASE')
|
|
)
|
|
json_body = [
|
|
{
|
|
"measurement": action,
|
|
"time": datetime.datetime.utcnow().replace(microsecond=0).isoformat(),
|
|
"fields": measurements,
|
|
}
|
|
]
|
|
try:
|
|
influx_client.write_points(json_body)
|
|
except Exception as e:
|
|
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')
|
|
|
|
parser.add_argument('--action', nargs='?', required=True,
|
|
choices=actions.keys(), help="Execute an action")
|
|
parser.add_argument('--loglevel', nargs='?',
|
|
choices=["debug", "info", "warning", "error", "critical"],
|
|
help="Loglevel")
|
|
parser.add_argument('--master-only', action='store_true', help="Only run I2C master")
|
|
parser.add_argument('--slave-only', action='store_true', help="Only run I2C slave")
|
|
parser.add_argument('--slave-timeout', nargs='?', type=int, default=60,
|
|
help="Slave timeout in seconds when --slave-only")
|
|
parser.add_argument('--export-to-influxdb', action='store_true',
|
|
help="Export results to InfluxDB")
|
|
|
|
args = parser.parse_args()
|
|
return args
|
|
|
|
|
|
class I2CSlave():
|
|
def __init__(self, address, queue):
|
|
self.address = address
|
|
self.queue = queue
|
|
self.pi = pigpio.pi()
|
|
if not self.pi.connected:
|
|
logger.error("not pi.connected")
|
|
return
|
|
|
|
def set_callback(self):
|
|
logger.debug("set_callback()")
|
|
self.event_callback = self.pi.event_callback(pigpio.EVENT_BSC, self.callback)
|
|
self.pi.bsc_i2c(self.address)
|
|
|
|
def callback(self, id, tick):
|
|
logger.debug(f"callback({id}, {tick})")
|
|
s, b, d = self.pi.bsc_i2c(self.address)
|
|
result = None
|
|
if b:
|
|
logger.debug(f"Received {b} bytes! Status {s}")
|
|
result = [hex(c) for c in d]
|
|
logger.debug(f"Callback Response: {result}")
|
|
if self.is_checksum_valid(result) and self.is_length_valid(result):
|
|
self.queue.put(result)
|
|
else:
|
|
logger.debug(f"Received number of bytes was {b}")
|
|
|
|
def is_checksum_valid(self, b):
|
|
s = 0x80
|
|
for i in b[:-1]:
|
|
s += int(i, 0)
|
|
checksum = 256 - (s % 256)
|
|
if checksum == 256:
|
|
checksum = 0
|
|
if checksum != int(b[-1], 0):
|
|
logger.debug(f"Checksum invalid (0x{checksum:02x} != {b[-1]})")
|
|
return False
|
|
return True
|
|
|
|
def is_length_valid(self, b):
|
|
length_in_msg = int(b[4], 0)
|
|
actual_length = len(b) - 6
|
|
if length_in_msg != actual_length:
|
|
logger.debug(f"Length invalid ({length_in_msg} != {actual_length})")
|
|
return False
|
|
return True
|
|
|
|
def close(self):
|
|
self.event_callback.cancel()
|
|
self.pi.bsc_i2c(0)
|
|
self.pi.stop()
|
|
|
|
|
|
class I2CMaster:
|
|
def __init__(self, address, bus, queue):
|
|
self.i = i2c_raw.I2CRaw(address=address, bus=bus)
|
|
self.queue = queue
|
|
|
|
def compose_request(self, action):
|
|
# 0x80 = source, 0x04 = msg_type, 0x00 = length
|
|
request = [0x80] + actions[action] + [0x04, 0x00]
|
|
request.append(self.calculate_checksum(request))
|
|
return request
|
|
|
|
def calculate_checksum(self, request):
|
|
s = 0x82
|
|
for i in request:
|
|
s += i
|
|
checksum = 256 - (s % 256)
|
|
if checksum == 256:
|
|
checksum = 0
|
|
return checksum
|
|
|
|
def execute_action(self, action):
|
|
request = self.compose_request(action)
|
|
result = None
|
|
for i in range(0, 20):
|
|
logger.debug(f"Executing action: {action}")
|
|
self.i.write_i2c_block_data(request)
|
|
time.sleep(0.21)
|
|
logger.debug("Queue size: {}".format(self.queue.qsize()))
|
|
if self.queue.qsize() > 0:
|
|
result = self.queue.get()
|
|
break
|
|
|
|
if result is None:
|
|
logger.error(f"No valid result in 20 requests")
|
|
return result
|
|
|
|
def close(self):
|
|
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)
|
|
if args.export_to_influxdb:
|
|
export_to_influxdb(action, measurements)
|
|
elif action == "getnodeid":
|
|
process_nodeid(response)
|
|
elif action == "getserial":
|
|
process_serial(response)
|
|
|
|
|
|
def process_nodeid(response):
|
|
hardware_info = {
|
|
0: {
|
|
"name": "HCCP",
|
|
"type": {
|
|
13: "WPU",
|
|
15: "Autotemp",
|
|
}
|
|
}
|
|
}
|
|
manufacturergroup = ((int(response[5], 0) << 8) + int(response[6], 0))
|
|
manufacturer = hardware_info[int(response[7], 0)]["name"]
|
|
hardwaretype = hardware_info[int(response[7], 0)]["type"][int(response[8], 0)]
|
|
productversion = int(response[9], 0)
|
|
listversion = int(response[10], 0)
|
|
|
|
logger.info(f"ManufacturerGroup: {manufacturergroup}, Manufacturer: {manufacturer}, "
|
|
f"HardwareType: {hardwaretype}, ProductVersion: {productversion}, "
|
|
f"ListVersion: {listversion}")
|
|
|
|
|
|
def process_serial(response):
|
|
serial = (int(response[5], 0) << 16) + (int(response[6], 0) << 8) + int(response[7], 0)
|
|
logger.info(f"Serial: {serial}")
|
|
|
|
|
|
def process_datalog(response):
|
|
# 0 = Byte
|
|
# 1 = UnsignedInt
|
|
# 2 = SignedIntDec2
|
|
Field = namedtuple('Field', 'index type label description')
|
|
datalog = [
|
|
Field(0, 0x92, "t_out", "Buitentemperatuur"),
|
|
Field(2, 0x92, "t_boiltop", "Boiler laag"),
|
|
Field(4, 0x92, "t_boildwn", "Boiler hoog"),
|
|
Field(6, 0x92, "t_evap", "Verdamper temperatuur"),
|
|
Field(8, 0x92, "t_suct", "Zuiggas temperatuur"),
|
|
Field(10, 0x92, "t_disc", "Persgas temperatuur"),
|
|
Field(12, 0x92, "t_cond", "Vloeistof temperatuur"),
|
|
Field(14, 0x92, "t_source_r", "Naar bron"),
|
|
Field(16, 0x92, "t_source_s", "Van bron"),
|
|
Field(18, 0x92, "t_ch_supp", "CV aanvoer"),
|
|
Field(20, 0x92, "t_ch_ret", "CV retour"),
|
|
Field(22, 0x92, "p_sens", "Druksensor (Bar)"),
|
|
Field(24, 0x92, "i_tr1", "Stroom trafo 1 (A)"),
|
|
Field(26, 0x92, "i_tr2", "Stroom trafo 2 (A)"),
|
|
Field(34, 0x10, "in_flow", "Flow sensor bron (l/h)"),
|
|
Field(37, 0x0, "out_ch", "Snelheid cv pomp (%)"),
|
|
Field(38, 0x0, "out_src", "Snelheid bron pomp (%)"),
|
|
Field(39, 0x0, "out_dhw", "Snelheid boiler pomp (%)"),
|
|
Field(44, 0xc, "out_c1", "Compressor aan/uit"),
|
|
Field(45, 0xc, "out_ele", "Elektrisch element aan/uit"),
|
|
Field(46, 0xc, "out_trickle", "Trickle heating aan/uit"),
|
|
Field(47, 0xc, "out_fault", "Fout aanwezig (0=J, 1=N)"),
|
|
Field(48, 0xc, "out_fc", "Vrijkoelen actief (0=uit, 1=aan)"),
|
|
Field(51, 0x92, "ot_room", "Kamertemperatuur"),
|
|
Field(55, 0x0, "ot_mod", "Warmtevraag (%)"),
|
|
Field(56, 0x0, "state", "State (0=init,1=uit,2=CV,3=boiler,4=vrijkoel,5=ontluchten)"),
|
|
Field(57, 0x0, "sub_state", "Substatus (255=geen)"),
|
|
Field(67, 0x0, "fault_reported", "Fout gevonden (foutcode)"),
|
|
Field(92, 0x10, "tr_fc", "Vrijkoelen interval (sec)"),
|
|
]
|
|
message = response[5:]
|
|
measurements = {}
|
|
for d in datalog:
|
|
if d.type == 0x0 or d.type == 0x12 or d.type == 0xc:
|
|
m = message[d.index:d.index+1]
|
|
num = int(m[0], 0)
|
|
elif d.type == 0x10:
|
|
m = message[d.index:d.index+2]
|
|
num = ((int(m[0], 0) << 8) + int(m[1], 0))
|
|
elif d.type == 0x92:
|
|
m = message[d.index:d.index+2]
|
|
num = ((int(m[0], 0) << 8) + int(m[1], 0))
|
|
if num >= 32768:
|
|
num -= 65536
|
|
num = round(num / 100, 2)
|
|
logger.info(f"{d.description}: {num}")
|
|
measurements[d.label] = num
|
|
return measurements
|
|
|
|
|
|
if __name__ == "__main__":
|
|
args = parse_args()
|
|
|
|
if args.loglevel:
|
|
logger.setLevel(args.loglevel.upper())
|
|
|
|
q = queue.Queue()
|
|
|
|
if not args.master_only:
|
|
slave = I2CSlave(address=0x40, queue=q)
|
|
slave.set_callback()
|
|
if args.slave_only:
|
|
time.sleep(args.slave_timeout)
|
|
|
|
if not args.slave_only:
|
|
master = I2CMaster(address=0x41, bus=1, queue=q)
|
|
if args.action:
|
|
result = master.execute_action(args.action)
|
|
logger.debug(f"Response: {result}")
|
|
master.close()
|
|
|
|
if result is not None:
|
|
process_response(args.action, result, args)
|
|
|
|
if not args.master_only:
|
|
slave.close()
|