Created
November 27, 2020 06:34
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Observe Bluetooth advertisements for Govee H5075 and H5177 thermo-gygrometer and print out temperature, humidity, battery level
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import datetime | |
from time import sleep | |
from bleson import get_provider, Observer | |
def c2f(val): | |
return round(32 + 9*val/5, 2) | |
last = {} | |
def temp_hum(values, battery, address): | |
global last | |
# print(values.hex()) | |
values = int.from_bytes(values, 'big') | |
if address not in last or last[address] != values: | |
last[address] = values | |
temp = float(values / 10000) | |
hum = float((values % 1000) / 10) | |
print("{0} {1} Temp: {2} F Humidity: {3} % Battery: {4} %".format(datetime.datetime.now().isoformat(), address, c2f(temp), hum, battery)) | |
def on_advertisement(advertisement): | |
# print(dir(advertisement)) | |
# ['__bytes__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__len__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_name', 'address', 'address_type', 'adv_itvl', 'appearance', 'flags', 'mfg_data', 'name', 'name_is_complete', 'public_tgt_addr', 'raw_data', 'rssi', 'service_data', 'svc_data_uuid128', 'svc_data_uuid16', 'svc_data_uuid32', 'tx_pwr_lvl', 'type', 'uri', 'uuid128s', 'uuid16s', 'uuid32s'] | |
mfg_data = advertisement.mfg_data | |
if mfg_data is not None: | |
# print(advertisement) | |
if advertisement.name == 'GVH5177_9835': | |
address = advertisement.address | |
temp_hum(mfg_data[4:7], mfg_data[7], address) | |
# elif mfg_data[0] == 0x88: | |
elif advertisement.name == 'GVH5075_391D': | |
address = advertisement.address | |
temp_hum(mfg_data[3:6], mfg_data[6], address) | |
# print(mfg_data.hex()) | |
# device info | |
# Advertisement(flags=0x05, name='GVH5075_391D', txpower=None, uuid16s=[UUID16(0xec88)], uuid128s=[], rssi=-29, mfg_data=b'\x88\xec\x00\x03QOd\x00') | |
# Advertisement(flags=0x05, name='GVH5177_9835', txpower=None, uuid16s=[UUID16(0xec88)], uuid128s=[], rssi=-49, mfg_data=b'\x01\x00\x01\x01\x03l\xbfd') | |
adapter = get_provider().get_adapter() | |
observer = Observer(adapter) | |
observer.on_advertising_data = on_advertisement | |
observer.start() | |
while True: | |
sleep(60) | |
observer.stop() |
Hi @tchen I forked your gist and added support for the Govee H5102. Thanks for your script.
By the way, on Linux if you use the
setcap
command as in the bleson instructions, https://bleson.readthedocs.io/en/latest/installing.html, then you do not need root permissions.
@mukoan Thank you for the tip!
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It also works nicely for my GVH5104_1F19, thanks a lot!
I have put my device into the freezer, bluetooth connection was still there.
Just the values returned didn't match the displayed values anymore, once going below 0 degC.
This has fixed the issue (I don't know much about python, it could be done in a better way probably):