mi smart sensor gateway - check status

[pete111]

hi does your python library work for smart sensor gateway, too?
I would like to check status of smart sensor alarm gateway - how do do this please?
Also option to arm/disarm alarm would be great.

[rytilahti]

You can use Gateway class to access (at least some) gateways, you can access the alarm functionality using alarm property. See https://python-miio.readthedocs.io/en/latest/api/miio.gateway.html#miio.gateway.GatewayAlarm for the list of available methods. Example could look something like this:

from miio import Gateway

gw = Gateway("ipaddr")
alarm = gw.alarm
print("current status: %s" % alarm.status())
print("turning on: %s" % alarm.on())

[pete111]

You can use Gateway class ... ```

wow, that is super cool :) Thank you!
Btw, any idea please, why it takes so long to get response from gateway? (usually 5-15 seconds) I hoped it will be very fast to get response, but it takes sometimes up to 15 secods (sometimes 1 second, sometimes time out occures).

[rytilahti]

Thanks to @starkillerOG who has been working on the gateway support :-)

To the responsiveness issue, poor network connectivity, maybe? Some devices are also more reluctant to answer to the initial handshake sometimes, I suppose, so there may be some retries going on.

[pete111]

I found out, that I can check status of device 3 or 5 times, each next time is response delayed +5 seconds more, and then device stops responding (no response anymore) with:
ERROR:miio.miioprotocol:Got error when receiving: timed out
Error: No response from the device

but in the xiaomi home app everything is working and "ping ip" also works ok with 3ms response. that is strange.

[pete111]

After a day I can confirm, that something is corrupted when using your library to get status of gateway (or any other cmd). After approx. 5 times of trials gateway switches to "No response from the device".

[rytilahti]

Maybe it's related to the sequence numbers? miiocli doesn't save the last used numbers, so it could be that the device blocks the access after it has answered to the "same" request multiple times inside some time frame.

You could try if the device keep responding to handshakes (e.g., miiocli discover --handshake) multiple times. If that works fine, then it is probably related to either the sequence numbers or the message payloads.

[pete111]

miiocli discover --handshake shows Error: No such command 'discover'

[rytilahti]

Sorry, I forgot that miiocli didn't have that. You can use this for testing it: mirobo discover --handshake 1

[pete111]

thanks, I am getting constantly this:

INFO:miio.miioprotocol:Sending discovery to <broadcast> with timeout of 5s..
INFO:miio.miioprotocol:Discovery done

[rytilahti]

Hmh, maybe it is broadcasting over the wrong interface (if you have many), as it is not detecting any devices whatsoever.

You could alternatively try a python script something like this:

from miio import Device
import time
dev = Device("<ip>", "<token>")
while True:
    print(dev.send_handshake())
    time.sleep(1)  # sleep 1 sec between requests

[pete111]

hi, thanks, python script works and I am getting this every second (just removed data values):

Container:
    data = Container:
        data = b'' (total 0)
        value = b'' (total 0)
        offset1 = 32
        offset2 = 32
        length = 0
    header = Container:
        data = b'!1datavalues' (total 16)
        value = Container:
            length = 32
            unknown = 0
            device_id = unhexlify('another value')
            ts = 2020-07-21 05:23:40
        offset1 = 0
        offset2 = 16
        length = 16
    checksum = b'another datavalues' (total 16)

[rytilahti]

What happens if you call .status() instead of handshake sending? Does it also work? If yes, then it's about the sequence numbers.

[pete111]

What happens if you call .status() instead of handshake sending? Does it also work? If yes, then it's about the sequence numbers.

from miio import Device
import time
dev = Device("ip", "token")
while True:
    print(dev.status())
    time.sleep(1) 

AttributeError: 'Device' object has no attribute 'status'