Linux Type-B Multitouch: Track Contact Identity Separately from the Slot Number
Why can a two-finger evdev reader move the wrong contact when it treats ABS_MT_SLOT as a permanent finger identifier or clears unchanged coordinates every frame?
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V4L2 Multi-Planar Capture: Separate Memory Planes from YUV Color Planes
Why does an NV12 frame contain luma and chroma planes while its V4L2 buffer description can still use one contiguous memory allocation?
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STM32H563 SRAM ECC Byte Writes: Explain the Hidden Read Before the Write
How can a byte or halfword SRAM store detect an ECC double error even when the firmware appears to be only writing memory?
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STM32G474 ADC After Idle: Apply the First-Conversion Workaround to the Correct Silicon Revisions
Why can a slowly sampled ADC give a bad first result after more than one millisecond of inactivity, and why must the first rather than second conversion be discarded for this erratum?
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STM32G474 Clock Failure Recovery: A Running Core Does Not Restore Peripheral Timing
After HSE failure switches the system clock to HSI16, which timing assumptions and output protections still need recovery before normal operation resumes?
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SiteWise Interpolated Queries: Keep the Output Grid Separate from the Data Search Window
Why does changing intervalWindowInSeconds alter which interpolated values are available without changing the requested output spacing?
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Greengrass Platform Manifests: Put Specific Matches Before the Fallback
Why can a valid component recipe select a generic artifact or lifecycle on an industrial gateway even when a matching architecture-specific manifest exists?
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STM32G474 PWM Dithering: Measure the 16-Cycle Average Without Promising Finer Individual Edges
What resolution does TIM1 dithering actually add, and why should a single PWM pulse still move in whole timer-clock steps?
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STM32H563 I3C IBI Payloads: Qualify Interrupt Data Separately from Private Transfers
Why can a sensor private read succeed while its I3C in-band interrupt payload is incompatible with the STM32H563 controller?
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STM32G474 ADC Auto-Delay: Explain Why Unread Results Make Hardware Triggers Disappear
Why does an external ADC trigger stream stop producing one sample per trigger when AUTDLY is enabled and software reads ADC_DR late?
