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Added tools for evaluating gyroscope accuracy and IMU polling rates. #13209
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Merged
slouken
merged 10 commits into
libsdl-org:main
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HilariousCow:Gyro-Instrumentation-For-TestController
Jun 13, 2025
Merged
Added tools for evaluating gyroscope accuracy and IMU polling rates. #13209
slouken
merged 10 commits into
libsdl-org:main
from
HilariousCow:Gyro-Instrumentation-For-TestController
Jun 13, 2025
+999
−19
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…IMU polling rates. This adds a visual suite to the testcontroller tool to help validate IMU data from new gamepad drivers and HID implementations. The 3D gizmo renders accumulated rotation using quaternion integration of gyroscope packets. If a controller is rotated 90° in real space, the gizmo should reflect a 90° change, allowing quick detection of incorrect sensitivity or misaligned axes. Also includes: - Euler angle readout (pitch, yaw, roll) - Real-time drift calibration display with noise gating and progress - Accelerometer vector overlay - Live polling rate estimation to verify update frequency Intended for developers working on controller firmware or SDL backend support to confirm correctness of IMU data processing.
slouken
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slouken
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…lay to show degrees per second not radians per second. I checked the radians per second against a turn table with a fixed 42degree per second rotation rate.
…asuring a average turn table rate for the sake of calibrating gyro rate.
…n-For-TestController
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Description
Adds a visual suite to the testcontroller tool to help validate IMU data from new gamepad drivers and HID implementations.
Intended for developers working on controller firmware or SDL HID support to confirm correctness of IMU data processing.
The 3D gizmo renders accumulated rotation using quaternion integration of gyroscope packets. If a controller is rotated 90° in real space, the gizmo should reflect a 90° change, allowing quick detection of incorrect sensitivity or misaligned axes.
Also includes: