Modbus bridge write

[jeroenst]

Description:

Related issue (if applicable): fixes issues in #9586

I have done a lot of work to finish the modbus writing.

I have tested all function codes for the modbus send cmd and the modbustcp connection.

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works with Tasmota core ESP32 V.2.0.4.1 N/A
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

Results of automated testing via ModbusTCP:

Testing function code 1
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x01 0x00 0x90 0x00 0x16 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x01 0x03 0x00 0x01 0x02    => OK!

Testing function code 2
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x02 0x00 0x90 0x00 0x16 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x02 0x03 0x00 0x01 0x02    => OK!

Testing function code 3
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x03 0x00 0x90 0x00 0x02 
RX: 0x00 0x01 0x00 0x00 0x00 0x07 0xf7 0x03 0x04 0x00 0x00 0x00 0x01    => OK!

Testing function code 4
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x04 0x00 0x90 0x00 0x02 
RX: 0x00 0x01 0x00 0x00 0x00 0x07 0xf7 0x04 0x04 0x00 0x00 0x00 0x01    => OK!

Testing function code 5 ON
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x05 0x00 0x90 0xff 0x00 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x05 0x00 0x90 0xff 0x00    => OK!

Testing function code 5 OFF
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xff 0x05 0x00 0x90 0x00 0x00 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xff 0x05 0x00 0x90 0x00 0x00    => OK!

Testing function code 6
TX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x06 0x00 0x90 0x00 0x01 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x06 0x00 0x90 0x00 0x01    => OK!

Testing function code 15
TX: 0x00 0x01 0x00 0x00 0x00 0x09 0xf7 0x10 0x00 0x90 0x00 0x15 0x02 0x06 0xc4 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x10 0x00 0x90 0x00 0x15    => OK!

Testing function code 16
TX: 0x00 0x01 0x00 0x00 0x00 0x09 0xf7 0x10 0x00 0x90 0x00 0x01 0x02 0x06 0xc4 
RX: 0x00 0x01 0x00 0x00 0x00 0x06 0xf7 0x10 0x00 0x90 0x00 0x01    => OK!

[arendst]

Thx.

[jeroenst]

My pleasure, it was a lot of work, more than I expected.

I thought all the commit messages would be squashed during merge, next time I will squash the merge request first.

[henfri]

Hello,

thanks for this development!
Does this allow to read Modbus-TCP and write Modbus-RTU (and vice versa)?
Where do I find documentation?

Best regards,
Hendrik

[Tom-Bom-badil]

Hi Hendrik,

AFAIK the questioned functionality was part of another recent project. Not sure if they finished.

/tom

[henfri]

Thanks!

[jeroenst]

Code is finished but on beta status.

Here you can find the documentation:

https://tasmota.github.io/docs/Modbus-Bridge/

[nikito7]

This works like TCP_BRIDGE?

Tcp_bridge is RTUoverTCP

[isaacncz]

Code is finished but on beta status.

Here you can find the documentation:

https://tasmota.github.io/docs/Modbus-Bridge/

hi, i would like to request for stating the version of Tasmota supported in the documentation