boards: Add board support for Arkin Labs A2M6X board

[ArkinLabs1Support]

This commit introduces initial board support for the A2M6X flight controller developed by Arkin Labs, based on the PX4-V6X standard. The Product ID and Vendor ID have been configured as follows:

CONFIG_CDCACM_PRODUCTID set to 0xAFC6

CONFIG_CDCACM_VENDORID set to 0xA321

For more information, visit our website: https://www.arkinlabs.in/aeromind-6x

Changelog

Feature: Board Support  
- Added support for the new A2M6X flight controller by Arkin Labs  
- Developed following the Pixhawk-6X framework and PX4-V6X standards  
- Documentation will be added in upcoming commits

[github-actions]

This pull request has been automatically closed due to 120 days of inactivity. If you would like to continue, please feel free to reopen it or submit a new PR.

[hamishwillee]

@mrpollo This was not even reviewed before being closed. Can we assign it to someone?

[mrpollo]

I'll take care of it, I just rebased to check CI

[hamishwillee]

Thanks very much. I guess we ask for docs as well?

[mrpollo]

Hi @ArkinLabs1Support,

First, apologies for the long delay in reviewing this PR - it fell through the cracks and we appreciate your patience.

A few items to address:

1. Skynode/Auterion References (non-blocking)

The following files contain Skynode-specific code copied from fmu-v6x. These are harmless (the ver hwbasecmp 009 010 011 checks will never match on A2M6X), but you may want to remove them for cleanliness:

• cmake/upload.cmake - Skynode upload targets (lines 52-64)
• init/rc.board_defaults - Skynode UXRCE_DDS config (lines 228-232)
• init/rc.board_mavlink - Skynode TEL2 mavlink config (lines 247-253)

2. Sensor Configuration Verification

Based on your product page, the sensor set appears to be:

• 3x ICM45686 IMU
• 2x ICP20100 barometer
• 1x RM3100 magnetometer

Can you confirm this matches rc.board_sensors? Also:

• What are the IMU rotation values (-R 0, -R 0, -R 8)? Are these verified against your board orientation?
• The barometers are on I2C buses 2 and 4 - is this correct for your hardware?

3. Documentation

Please add documentation for this board in docs/en/ within this repo. You can use the Pixhawk 6X docs as a reference: https://docs.px4.io/main/en/flight_controller/pixhawk6x

[mrpollo]

4. CI Flash Overflow

The build is failing due to flash overflow:

region 'FLASH' overflowed by 33032 bytes

You'll need to reduce the firmware size by ~32KB. Some suggestions:

1. Remove unused IMU drivers - Your default.px4board includes many IMU drivers you don't need. Since your hardware only has ICM45686, consider removing:

   • CONFIG_DRIVERS_IMU_BOSCH_BMI088
   • CONFIG_DRIVERS_IMU_INVENSENSE_ICM20602
   • CONFIG_DRIVERS_IMU_INVENSENSE_ICM20649
   • CONFIG_DRIVERS_IMU_INVENSENSE_ICM20948
   • CONFIG_DRIVERS_IMU_INVENSENSE_ICM42670P
   • CONFIG_DRIVERS_IMU_INVENSENSE_ICM42688P
   • CONFIG_DRIVERS_IMU_INVENSENSE_IIM42652
   • CONFIG_DRIVERS_IMU_ANALOG_DEVICES_ADIS16470

2. Remove unused barometer driver - You have CONFIG_DRIVERS_BAROMETER_MS5611=y but your hardware uses ICP20100. Remove MS5611.

3. Remove Auterion-specific driver - CONFIG_DRIVERS_POWER_MONITOR_PM_SELECTOR_AUTERION=y is likely not needed for your board.

4. Consider if you need all INS drivers - CONFIG_COMMON_INS=y adds several INS drivers that may not be necessary.

For reference, compare with boards/px4/fmu-v6x/default.px4board which is more selective about included drivers.