* use QSerialPortInfo do detect presence of a serial port (fix#836)
* checking for existence of device file does not work on windows
* instead: construct QSerialPortInfo from device name and check, if it is not null
When constructing QSerialPortInfo from device name, this constructor finds the
relevant serial port among the available ones according to the port name name,
and constructs the serial port info instance for that port.
(https://doc.qt.io/qt-5/qserialportinfo.html#QSerialPortInfo-2)
* serial port: set device in error with a failure text, if device name is invalid
Co-authored-by: heiko <heiko@bihr.internal>
* Handle Exceptions in main & Pythoninit
* Have SSDPDiscover generic again
* Have SSDPDiscover generic again
* Change Info- to Debug logs as technical service messages
* Nanoleaf - When switched on, ensure UDP mode
* Include SQL Database in Cross-Compile instructions
* Fix Clazy (QT code checker) and clang Warnings
* Stop LedDevice:write for disabled device
* Nanoleaf: Fix uint printfs
* NanoLeaf: Fix indents to tabs
* NanoLeaf - Add debug verbosity switches
* Device switchability support, FileDevice with timestamp support
* Nanoleaf Light Panels now support External Control V2
* Enhance LedDeviceFile by Timestamp + fix readyness
* Stop color stream, if LedDevice disabled
* Nanoleaf - remove switchability
* Fix MultiColorAdjustment, if led-range is greater lednum
* Fix logging
* LedFileDevice/LedDevice - add testing support
* New "Led Test" effect
* LedDeviceFile - Add chrono include + Allow Led rewrites for testing
* Stabilize Effects for LedDevices where latchtime = 0
* Update LedDeviceFile, allow latchtime = 0
* Distangle LinearColorSmoothing and LEDDevice, Fix Effect configuration updates
* Updates LedDeviceFile - Initialize via Open
* Updates LedDeviceNanoleaf - Initialize via Open, Remove throwing exceptions
* Updates ProviderUDP - Remove throwing exceptions
* Framebuffer - Use precise timer
* TestSpi - Align to LedDevice updates
* Pretty Print CrossCompileHowTo as markdown-file
* Ensure that output is only written when LedDevice is ready
* Align APA102 Device to new device staging
* Logger - Remove clang warnings on extra semicolon
* Devices SPI - Align to Device stages and methods
* Fix cppcheck and clang findings
* Add Code-Template for new Devices
* Align devices to stages and methods, clean-up some code
* Allow to reopen LedDevice without restart
* Revert change "Remove Connect (PriorityMuxer::visiblePriorityChanged -> Hyperion::update) due to double writes"
* Remove visiblePriorityChanged from LedDevice to decouple LedDevice from hyperion logic
* Expose LedDevice getLedCount and align signedness
