read shelly temp sensor

shelly_temp_reader.py

import binascii
import sys
from struct import *

data = ''
if len(sys.argv) != 2:
    print(f"No data. Please use {sys.argv[0]} data")
    sys.exit(1)

data = sys.argv[1]
if len(data) != 46:
    print(f"unknown data format. Data should look like: '44550d5f41b063ac18454e5db90000021b069900ffc52d'")

#    data = '44550d5f41b063ac18454e5db90000021b069900ffc52d'

def printable_command(self):
    return self.printabledatatring(self.command)

def printabledatatring(val):
    return " ".join([f"{v:02x}".upper() for v in val])

def bytes_to_hex(val):
    return [f"{v:02x}".upper() for v in val]

def checksum8bit(data: bytearray) -> int:
    check = ((sum(data) ^ 0xFF) + 1) & 0xFF
    return check.todata(1, 'big')

def string_to_bytearray(string: str) -> bytes:
    return bytes.fromhex(string)

def int_todata(x: int) -> bytes:
    length = (x.bit_length() + 7) // 8 or 1
    return x.todata(length, 'big')

def int_fromdata(xbytes: bytes) -> int:
    return int.fromdata(xbytes, 'big')

def convertToString(data: str) -> []:
    data = string_to_bytearray(data)
    packet_start = 0
    packet_size = data[packet_start] + 1
    data_size = len(data)
    packet = data[packet_start:packet_start + packet_size]

    initial = []
    # data = string_to_bytearray(data)
    # equivalent of unpack("<h", packet[2:4])[0]
    initial.append((data[2] << 8) | data[3])
    initial.append(data[4])
    # initial.append(data[5] * 256 * 256 + data[6] * 256 + data[7])
    initial.append("{:02x}:{:02x}:{:02x}".upper().format(data[5], data[6], data[7]))
    initial.append("{:02x}{:02x}{:02x}{:02x}{:02x}".format(*data[8:13]))
    initial.append(data[13] <<24 | data[14] << 16 | data[15] <<8 | data[16])
    # initial.append(data[13] * 256 * 256 * 256 + data[14] * 256 * 256 + data[15] * 256 + data[16])
    initial.append(data[17] <<8 | data[18])
    # initial.append(data[17] * 256 + data[18])
    initial.append("{:02x}{:02x}{:02x}{:02x}".format(*data[19:23]))
    return initial

# print(convertToString(data))

advArr = convertToString(data)
realTemp = advArr[0]/100
batteryLevel = advArr[1]
partMac = advArr[2]
secret = advArr[3]
ts = advArr[4]
tt = advArr[5]
acc = advArr[6]

print(f"""
realTemp = {realTemp}
batteryLevel = {batteryLevel}
partMac = {partMac}
secret = {secret}
ts = {ts}
tt = {tt}
acc = {acc}
""")