KAKUTEH7: add LSM6DSK320X support

[zebulon-86]

Summary

This PR updates the existing KAKUTEH7 target config to enable support for LSM6DSV16X and LSM6DSK320X.

This is a config-only change for an existing target. No new target is introduced, and no driver implementation changes are included.

Hardware Context

The existing KAKUTEH7 target supports the ICM42688P. This PR adds LSM6DSV16X and LSM6DSK320X support using the existing SPI4, chip select, INT1 data-ready interrupt, and sensor alignment configuration.

The schematic and PCB review confirms that the existing IMU interface and target pin configuration remain unchanged.

Validation

• Built KAKUTEH7 firmware successfully.
• Verified in Betaflight Configurator that the flashed target is identified as HBRO/KAKUTEH7.
• Verified hardware detection for LSM6DSV16X:
  • GYRO: (1) LSM6DSV16X enabled locked dma
  • ACC: LSM6DSV16X
• Verified hardware detection for LSM6DSK320X:
  • GYRO: (1) LSM6DSK320X enabled locked dma
  • ACC: LSM6DSK320X
    Attached Configurator and CLI status screenshots:

HBRO/KAKUTEH7 target identification

LSM6DSV16X CLI status

LSM6DSK320X CLI status

• Verified the existing target alignment works correctly on hardware.
• Blackbox data from an LSM6DSK320X manual flight of about 116 seconds shows no failsafe events and normal recovery during aggressive maneuvers.

Checklist

• passed Betaflight team's schematics review
• passed hardware samples testing
• follows applicable target and hardware guidelines
• N/A: follows connector standards (no connector changes)
• flight tested (LSM6DSK320X)
• comments/issues resolved

Summary by CodeRabbit

• Chores
  • Added support for the LSM6DSK320X combined accelerometer/gyroscope, expanding hardware compatibility for supported flight controllers.

[coderabbitai]

Walkthrough

Added a single #define USE_ACCGYRO_LSM6DSK320X macro to configs/KAKUTEH7/config.h to enable the LSM6DSK320X combined accelerometer/gyro driver at build time.

Changes

Sensor driver enablement

Layer / File(s)	Summary
Sensor selection macro configs/KAKUTEH7/config.h	A #define USE_ACCGYRO_LSM6DSK320X macro was added to select the LSM6DSK320X combined accelerometer/gyro sensor driver.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• betaflight/config#1081: Both PRs add the USE_ACCGYRO_LSM6DSK320X sensor-selection macro in board configs/*/config.h.
• betaflight/config#1048: Adds the same USE_ACCGYRO_LSM6DSK320X compile-time macro in other target config files.
• betaflight/config#1028: Adds USE_ACCGYRO_LSM6DSK320X in a different board config to enable the same sensor.

Suggested labels

Betaflight Supported

Suggested reviewers

• sugaarK
• haslinghuis
• ot0tot

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The PR description is detailed and provides context, validation, and a checklist; however, it does not follow the template structure and leaves critical items unchecked (schematics review, comments resolved).
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The PR title states 'KAKUTEH7: add LSM6DSK320X support' which accurately reflects the actual change in the raw summary (adding USE_ACCGYRO_LSM6DSK320X macro). However, the PR objectives indicate the broader context includes LSM6DSV16X support that was later removed.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[sugaarK]

we won't approve adding the LSM6DSV16X its not flyable as far as gyro platforms go. we have spent over a year working with and in parallel with sam on making this work and the consensus from our team and the STM mems team is its not suitable for use on flight controllers.
the LSM6DSK320X is good the DSV16 is not.

[sugaarK]

remove the DSV16 define... its not suitable for use on flight controllers

[zebulon-86]

Updated.

LSM6DSV16X support has been removed from this PR. The change is now limited to LSM6DSK320X support for KAKUTEH7.

[zebulon-86]

@sugaarK Updated as requested.

LSM6DSV16X support has been removed, and this PR is now limited to LSM6DSK320X support for KAKUTEH7.

Could you please take another look when you have time?