* introducing external MLink module telemetry as module PPM subtype
* implemented fix for sensor discovery display not showing all detected sensors (is in separate PR too)
implemented PPM subtypes in Companion
* add PPM subtype to model printer
finalize subtypes for PPM in Companion
* added logic to try to use HW UART with inverters turned off first (e.g. NV14), then, if not successfull use soft serial inverted (== uninverted data due to HW inverters on PCB)
changed start bit detection IRQ priority from 5 to the previous 0 (also in separate PR)
* extended telemetry timeout to 2s due to slow Mlink RSSI update rate
* changed the "NOTLM" sub-type texts to:
- "No Telem" for 128x64 (this is the max numbers of characters it can take)
- "No Telemetry" everything else including Companion
* Companion:
- lower case 1st charachter on PpmSubTypeStrings to ppmSubTypeStrings
- added telemetry hooks for ppmSubTypeStrings stringx
* simplified serial port initialization for MLink telemetry
* editorial change: corrected obsolete comment
* WiP: new module interface
* WiP: softserial timer DMA
* WiP: setup() and send() in one step
and remove methods specific to internal or external module
* fixes and extra port config
* horus targets
* module ports have moved
* T8 support (only internal module)
* fix nv14
* stupid GCC....
* disable BT
* remove nv14 telem driver
* remove old aux serial driver
* Move module buffers out of pulses.h
* Soft serial fixes and PXX1 support
* Fixed PPM module output
* Fixed CLI
* compilation fixes
* Ported bluetooth and flysky gimbal to new serial driver
* Re-enable soft-serial RX
* fixes and cleanup
* nv14 fixes
* Fix flysky gimbals
* Ghost module
* 16 bytes of RAM
* Remove getByte from module API
* Ghost cleanup
* fix: _half_duplex_input() must be called after usart init
* WiP
* more cleanup
* Remove board specific settings from PXX1 / PXX2 drivers
* A bit of PXX2 header cleanup
* Add support for OVER8 and ONEBIT
* Add some support for inverters (NV14 / EL18)
* Support NV14 power fixes in generic board
* Fix polarity handling
* Fix RX DMA
* Fix mixer not running
* Add soft-serial polarity control
* Quick fix for telemetry polling while module port is changed
* Fix bootloader DEBUG
* Fix MPM telemetry
* Fix pulse start
* DSM2 soft-serial fallback
* DSMP async module restart
* Fix CRSF LUA upstream
* Remove global variable telemetryProtocol
* Use HAL/LL constants
* Fix various issue with AFHDS3 and NV14/EL18 internal module
* Fixed S.PORT unit tests
* fix: update widx after writing at current index
* fix: init error condition
* Fix: possible infinite loop in _find_port()
* Add support for bidir S.PORT init
* Add support for "getLastByte" in HW serial driver
* PXX1: Add support for S.PORT based on IDLE callback
* Fix rebase error
* Fix softserial _rx_fifo_push()
* Add softserial support for waitForTxCompleted()
* Fix MPM flashing (internal / external)
* Fixed external MPM
* Activate RX DMA on internal module
Seems to work with serial passthrough without issues, at least on the L3R PRO.
* Fix softserial DMA on stdlcd F4 targets
* Add softserial support for 32bit timers (mostly TIM2)
* More precise soft-serial
* Fix MPM update using inverters & HW uart
* Raise S.PORT DMA/USART IRQ prio to achieve faster switching to input
* Remove useless delays
* Fix flashing external ELRS module
* Added a retry mechanism for FrSky S.PORT update
* Remove useless enableRx()
* External FrSky modules are all flashed via S.PORT
* Remove power management unit update
This was only used on the first batch of X-lite.
