Send hex to rs485

[axel-GB]

I have configured TCP TX, RX and runing TCPStart 8888.
There is Rs485 connected.
Conection from other devices works.

I have a problem with sending a command in Hex from the same TASMOTA runing TCP server to RS.
Command like SerialSend5 FFFFC10FDE
Tested Websend [192.168.1.2:8888] FFFFC10FDE but not working

[sfromis]

When you hand over serial to another device via TCP (ser2net protocol), you can no longer use local serial handling for the same. Your other device has control and that's where you can send and so on. Trying to use http (via WebSend) is badly useless for ser2net, and if it even made sense, it would still not be viable on the same device.

[axel-GB]

I have a Acces Controler connected by RS485 to Serial with Tasmota as TCP Serwer.
I need send command to set TIME for working with TIMERS.
But Now for test I try to open door (it works with android UCP/TCP Widget APP).

Really i send websend [192.168.5.241:8888] FFFFC10FDE

Command you decoded GET /cm?cmnd=FFFFC10FDE HTTP/1.1 is good
Host: 192.168.5.241:8888 you decoded is CORRECT ( It has been hanged by my phone and changed it - soory)
but that what i send isn't what i get and need to correct working.
How have you decoded it ????

Data decoded was correct but do not works to open door. If i get FFFFC10FDE in console it should work, like the android app do.

[sfromis]

Again, it does not make sense to try to use WebSend for serial. Zero sense. Waste of time.

Forgetting everything about WebSend - what command would you use on the Tasmota "server" to send the serial data you want? Maybe something like SerialSend5 xxxxxx ?

That would be the command you could send with WebSend [92.168.5.241] command
Of course make sure to use the IP (or host name) of the Tasmota device owning the serial port without having a config for TCP serial tunnel, and absolutely not a port number used for such tunneling. In general, using MQTT is the preferred strategy for communicating among Tasmota devices, but WebSend can usually also work.

My decoding was just a simple tool to "convert hex to ascii", you can find other such tools by Googling for that phrase.

[axel-GB]

SerialSend does not work to send anything and anywhere.

But from oder device sended
websend [192.168.5.241] FFFFC10FDE
i get:

07:50:51.140 SRC: WebCommand from 192.168.5.220
07:50:51.143 CMD: Grp 0, Cmd 'FFFFC10FDE', Idx 1, Len 0, Pld -99, Data ''
07:50:51.148 RSL: RESULT = {"Command":"Unknown","Input":"FFFFC10FDE"}
and do not work
Please help.
PS. it can be from berry script to because i will nedd to make hex conversion.

[sfromis]

As Tasmota has no command named "FFFFC10FDE", it does not help submitting such a bad command.

That's why I suggested skipping all that talk about WebSend, and make it clear what Tasmota console command you'd use to send those hex bytes, on a Tasmota device owning the serial port without it being configured for TCP.

If that is something with SerialSend5 (that was not a suggestion, merely an example), that would be the command you can use with WebSend. But you need a valid Tasmota command, until you have that, using WebSend does not make sense.

If you do it on a Tasmota device with a serial port configured for TCP, you cannot do anything with that serial port, except from the device you have given control over it to.

[barbudor]

I believe @axel-GB is confused and mixing up 2 different modes of Tasmota

• TcpBridge which is enabled by setting the GPIOs to TcpRX and TcpRX. In that mode Tamsota bridges a TCP port (exemple 8888 and the serial). To use that mode, once you have performed TcpStart 8888 you have to open a socket to port 8888 from another software, most probably a computer and use the socket interface to send binary data (not hex). That is not using the HTTP protocol anywhere. You MUST write a software that open the socket. Any programming language would work (python, C/C++ or even Berry on another Tasmota)

• SerialBridge is enabled using SerBrTx and SerbrRX where Tasmota can send and receive data to/from the serial ports using Tasmota commands such as SerialSend5 FFFFC10FDE. Such commands can be executed from the web console, from rules or sent to Tasmota using MQTT or HTTP (https://ip.of.your.tasmota?cmnd=SerialSend5%20FFFFC10FDE) or from another Tasmota device using the WebSend command such as WebSend [ip.of.your.tasmita] SerialSend5 FFFFC10FDE

So try to understand the differences between both and make your mind up on which mode you want to use

[axel-GB]

Thanks @barbudor.
You write
" You MUST write a software that open the socket. Any programming language would work (python, C/C++ or even Berry on another Tasmota)"

If I have understood that is what I need to do - Open socket in Berry and send data from other Tasmota.

[s-hadinger]

Indeed. Use string.format with %02X

[sfromis]

Simplest is to use f'{month:02X}' giving 0C. Or lower-case x for lower-case hex.

[axel-GB]

Thanks @sfromis , @s-hadinger .
It works. And what is the simples way to get from 2024 only 2 digits 24
year = tasmota.time_dump(tasmota.rtc()['local'])['year']

Because I use
def strReplace(haystack, needle, food)
import string
return string.split(haystack, needle).concat(food)
end

[sfromis]

Right now, year % 100 == 24

Not sure what the related use case of the last part with strReplace is, but usually it is preferable to construct the string as wanted, and possibly placeholders. Like:

var year2 = tasmota.time_dump(tasmota.rtc('local'))['year'] % 100
print(f'Current year is {year2:02i} in two dec digits')
print(f'Current year is {year2:02X} in two hex digits')

(Also note that using tasmota.rtc can be a bit shorter, by only requesting the local value).

[axel-GB]

Thanks.
Marry X-mas.