AP_HAL_ChibiOS: add hwdef X-MAV-AP-H743v2

[TompsonTan]

Dear ArduPilot-Autopilot Developer, We are X-MAV, a new manufacturer of flight controllers. We have developed a flight controller AP-H743v2, We will keep developing it and want to add our flight controller to supported hardware.

Best regard!

[andyp1per]

Few minor changes

[andyp1per]

The commits need to be split across subsystems

[TompsonTan]

@andyp1per Hi, can these commits be merged now? Please feel free to let me know if there is any need to change it.

[Hwurzburg]

needs additional documentation....like this: https://github.com/ArduPilot/ardupilot/tree/master/libraries/AP_HAL_ChibiOS/hwdef/IFLIGHT_2RAW_H7

[TompsonTan]

1.changed reserved id;
2.added document readme.md

Please review. Thanks again!

[Hwurzburg]

once final changes made, commits should be squashed and a library split made....you might want to break out the build_types.txt in a separate PR to reserve the bd id so someone else does not get it (first come/first served)...it gets merged almost immediately while this PR might take a review cycle or 2

[TompsonTan]

Done:
1.added SD card interface in the bootloader to allow loading firmware from the SD card.
2.changed serial protocol default setting.
3.updated README.

[TompsonTan]

board id reservation has been separate into another pr https://github.com/ArduPilot/ardupilot/pull/28253. Please merge it, thanks.

[Hwurzburg]

Since this looks close, I squashed and split for you...also removed the double define of OSD_TYPE in the hwdef.dat
did you update the bootloader bin with the new board id?

[TompsonTan]

Since this looks close, I squashed and split for you...also removed the double define of OSD_TYPE in the hwdef.dat did you update the bootloader bin with the new board id?

bootloader of X-MAV-AP-H743v2 with the new board id 1174 updated now.

[Hwurzburg]

Johnson, I squashed the new bootloader and marked for DEVCall
Would it be possible to get a couple of samples? I would like to update my DShot test fixture with an H7 board and this one looks ideal

[TompsonTan]

Johnson, I squashed the new bootloader and marked for DEVCall Would it be possible to get a couple of samples? I would like to update my DShot test fixture with an H7 board and this one looks ideal

ok, i will send you some samples later.