Power Clamp error - Githubissues

darckat038 commented 1 month ago

Hi, i'm getting {'Error': 'Check device key or version', 'Err': '914', 'Payload': None} when trying to access the status of my tuya 3 phase power clamp. Here is the code:

import tinytuya

#Connect to Device
d = tinytuya.OutletDevice(
    dev_id='bf7e7e409fbda19014zwrs',
    address='192.168.2.80',
    local_key=")7@;aNs%`?5`])R)",
    version=3.4)

def getStatus(o):
    status = o.receive()
    return status

print(getStatus(d))

I already checked the key and version with the "wizard" and they are correct. Recently i updated that device with the latest firmare. Could that be the problem? Also i would like to point out that i'm using the power clamp on the Smart Life app. Thanks for the help.

jasonacox commented 1 month ago

Hi @darckat038 - some suggestions:

Some of the Tuya devices do not respond to more than one connection. Stop the SmartLife app and try the script to see if ti works.
When you upgrade the firmware, it will assign a new local key. I assume you already re-ran the wizard to get the new key but if not, you should.
When you ran wizard was it able to poll the device? Note the version number and the local key it uses to ensure they are the same as you are showing in your script.
Power cycle - this isn't going to be easy for this device, but some Tuya devices become unstable and need a full power cycle to reset.
Turn on debug mode: tinytuya.set_debug(True) to see if it provides more insight.

darckat038 commented 1 month ago

Thanks for the fast answer. However i did as you said and:

I stopped all the other connections to SmartLife app, but nothing new
I tried re-run wizard but the key and the version were already the last given
it was able to poll the device but it displayed No Response
i still didn't try this but i will
with the debug mode on it says
```
DEBUG:TinyTuya [1.13.2]
```

DEBUG:Python 3.12.0 (tags/v3.12.0:0fb18b0, Oct 2 2023, 13:03:39) [MSC v.1935 64 bit (AMD64)] on win32 DEBUG:Using pyca/cryptography 42.0.5 for crypto, GCM is supported DEBUG:sending payload quick DEBUG:final payload: b'0123456789abcdef' DEBUG:payload encrypted=b'000055aa0000000100000003000000441bbe5d9b00db73758c880f324d0f9e45948caf4fbef52658d664fb5b7610980b7078fb1d2e19988fc92ba813e8a18beecdbd4471b57726a5f3ad10c7563ef4b60000aa55' DEBUG:_recv_all(): no data? b'' DEBUG:_recv_all(): no data? b'' DEBUG:received null payload (None), fetch new one - 1 retries remaining DEBUG:_recv_all(): no data? b'' DEBUG:_recv_all(): no data? b'' DEBUG:received null payload (None) but out of recv retries, giving up DEBUG:session key negotiation failed on step 1 DEBUG:ERROR Check device key or version - 914 - payload: null {'Error': 'Check device key or version', 'Err': '914', 'Payload': None}

jasonacox commented 1 month ago

I should have noticed this before, but your code is only using the receive() function. I don't see where you are sending the request for status. I would try something like:

import tinytuya
tinytuya.set_debug(True)

# Connect to Device
d = tinytuya.OutletDevice(
    dev_id='DEVICE_ID_HERE',
    address='IP_ADDRESS_HERE',
    local_key='LOCAL_KEY_HERE', 
    version=3.3)

# Get Status
data = d.status() 
print(f"set_status() result: {data}")

it was able to poll the device but it displayed No Response

Ugh. It would be good to confirm if a power cycle fixes this. Can you post a link to the Tuya "3 phase power clamp" that you are using? At a minimum it would be good to see if anyone in the community has one and has had success at getting it to work.

darckat038 commented 1 month ago

Hey, sorry for my delay in the response. However i managed to solve the problem, i don't know how exactly, but i think the power clamp only needed to be powered off and then on. Thanks for the help.

jasonacox / tinytuya

Power Clamp error #497