adding new device

[Rujo]

I appreciate your work. I could find my devices and they are connected. But I do not get any data in the payload back. Most likely, I have not integrated my devices correctly.
How do I add new commands?

[FrBerger83]

Hello,

To add a command, you can add a new function in Commandes.ino or in your main code :

1. you have to find out which dps is used for your command ex :
   for a command such as turn ON : "1":true
   create a byte Pload1[] = { 0x22, 0x31, 0x22, 0x3a, 0x74, 0x72, 0x75, 0x65 } ; //"1":true

then use
tryConnect(5);
getKey( ) ;
ret = sendCommande( Pload1, sizeof(Pload1) );

[Rujo]

I just got TinyTuya working. If I understand your code correctly, it cannot read (yet) data from the devices.
So I am going to try to run a subset of TinyTuya in micropython on an ESP 32. Thanks for your work and for your help.

[FrBerger83]

Hello, I have not been able to run micropython on an ESP32, I have seen many people trying but without any success.
What I would suggest is to first run tinytuya in Python on your computer with a simple command (status) such as

import tinytuya
# Connect to Device
d = tinytuya.OutletDevice(
    dev_id='DEVICE_ID_HERE',
    address='IP_ADDRESS_HERE',      
    local_key='LOCAL_KEY_HERE', 
    version=3.4)
# Get Status
data = d.status() 
print('set_status() result %r' % data)

in order

1. to validate that your device secret key is correct and that your device respond correctly
2. the status command will return all the DPS for your device and show you which DPS are used to turn On or Off your device (I have seen some use dps "1":true, some dps "20":true...)
3. then test the status command on the ESP32 with the same parameters...
   good luck

[Rujo]

Thanks. That is a good idea. I will follow that path. But it only makes sense to me if I can both set and read the data on the device.

I should be more specific because this will be much simpler:
My project is to read data for electrical power and voltage from one device and, based on the data an algorithm will decide to torn the relay of another device on or off. Both devices are V3.4.

[FrBerger83]

yes that's fine and I basically do the same kind of things on an ESPxx:
-reading the status gives you all the data managed by the device (I use an EARU breaker and it gives me Voltage, Watts and amps trhu dps 20, 19,18) and I can turn some devices On/off using dps "1":true /false or other devices (rgb lamps) On/off "20":true /false, my point in reading status, is that it gives you a good way to understand how your device work and what is possible to do. Then you can apply it in a ESPxx program.

[Rujo]

Excellent. I will try it over the weekend

[Rujo]

Thank you. Using your suggestion, adding the device worked well.

But I am still stuck. The ESP8266 can find Tuya devices and print their data.
I can connect to the device, But when I want to read data from a device, I do not get data back after my request.
The encrypting procedure is a bit more than I can usually handle and it is hard for me to make sense of the log.

I have added a function to read epoch time, I have the local key of the device and the version is 3.4.

Can you suggest a way to analyse where the problem lies?
I can send you the logs, but I did not want to flood you with information at this point.

[FrBerger83]

it's ok, just sent it, I will try to look at it.

[Rujo]

I just sent it. It happened to end up a few lines further above.

[Rujo]

I compared the results from EspTuya to the log fromTinyTuya. It used exactly the same credentials for both to read data from a 25A Tuya relay. To avoid artefacts I restarted my PC and than ran the EspTuya code followed by tinyTuya.

From the logs it appears that in EspTuya the code does manage to create the connection, but establishing the handshake fails at the first hurdle because the device sends a message without a payload back. I tried, for hours but it is too difficult for me to follow the code with all these function calls. Could you please have a look at the logs? The ESP log is not complete because it failed early and it does not make sense to follow it much further. For reference, I have also included the Arduino code.
EspTuya_log.docx
tinyTuya_log.docx
EspTuya_nearly_working_EpochTime_25A.txt

@FrBerger83 Is there a way to revert the hashed code into readable text to compare the logs from TinyTuya and EspTuya? I could not run the two applications at exactly the same time, which means that the hashed code is completely different and not comparable in this form.

[FrBerger83]

hello,
here are a few suggestions...
2024 06 07 rujo.pdf

[Rujo]

Thank you so much. You made my day!
It was indeed a problem with the local key. I must have typed it in and mixed up ` with ' (0x60 and 0x27).
But problems always came in pairs, and the IP address had changed without me noticing it.

All working great now.
Can I buy you a coffee?

[FrBerger83]

Thanks for the coffee offer, but it's ok, Glad I could help... Have fun !!!