IOControl library updates

[mikee47]

Fixes

Fix request ID defaulting to "null" string

bugfix: Device state handling

• Device::stop() doesn't update state
• Clear fault state on successful request

Fix toString(Request) not available compiler error

Fix issue with TX DONE interrupt on RP2040

• Fires when FIFO drops below 25% so needs more padding.

Fix Modbus GenericRequest 'bad_node' error

Bugfix: Cannot flush uart from ISR (RS485)

Fix possible double-call during modbus execute event

Bugfix: activeConfig not set in Serial

Fix uninitialised default values

Fix RFSwitch output initialisation and idling

Improvements

Use nested namespaces (C++17)

Device::nodeIdMax() is calculated, doesn't need to be virtual

Tidy up Device factory inheritance

Add devmgr findDevice method template to handle up-casting

Add device parameter to support minimum interval between transactions

Put toString function overloads in global namespace

Omit command from JSON responses if undefined

Improve DMX512

• Fix segment not being set
• Add device fade option
• Implement query command
• Tidy up Request::nodeSet() and nodeAdjust(), virtualise setValue()

Improve RS485

• Add gpio numbers to Serial::open()

Revise modbus PDU structure

• Structure for input/holding registers is identical
• Add methods for accessing coil bits

RS485 devices can override default transaction timeout

Add modbus GenericRequest support, plus transfer callback hook

Allow RS485 per-request Slave Address override (e.g. for broadcast requests)

Reduce RS485 debug verbosity

Complete RS485 receive using timer to avoid premature request completion. This enables support for general RS232 communication where responses may be a bit bursty.

Add Custom class. May serve as a useful starting point for new devices.

New devices

Add RI-D35 modbus energy meter

Add STM8Relay modbus relay board support.

• New 4-channel modbus board uses coil commands (0-based) and has 4 digital inputs
• Use update command to change stm8relay slave address

Add NT18B07 NTC temperature sensor board

Add STS fan controller sample project
This is a real application used to control three PWM fans for cooling a hybrid solar inverter.
Uses RPi Pico as hardware can generate PWM and measure speed.

[what-the-diff]

PR Summary

• Subproject Commit Update in IOControl Folder
  A part of the project called 'subproject' found in the 'IOControl' folder has been refreshed. This change usually means that some improvements or bug fixes have been added, ensuring better performance and stability.