Julian Oes 3c39095271
[Sponsored by Holybro] Support for Kakute H743-Wing (#24669)
* hrt: Fix PPM input on channel 2

The CCMR1_PPM define for PPM input on channel 2 was incorrectly set to 2,
which was setting bits for channel 1 instead of channel 2. This prevented
PPM input from functioning properly on channel 2.

Changed CCMR1_PPM for channel 2 from 2 to (1 << 8), which correctly
configures the CC2S bits for input capture mode on TI2.

This fixes an issue noted in the existing code comment:
"FIXME! There is an interaction in the CCMR registers that prevents
using Chan 1 as the timer and chan 2 as the PPM"

Tested on STM32H743 with PPM input on PC7 (TIM8_CH2).

* rc_input: enable sharing serial and PPM pin

By setting RC_SERIAL_PORT_SHARED_PPM_PIN_GPIO_RX it is now possible to
use the same pin on the STM32 for PPM input as well as serial input.

* boards: Add support for Holybro KakuteH7-Wing
2025-05-04 14:44:11 -08:00
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