Touch Panel Debugging and Data Analysis

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Questions and Answers

What is the value of the "es_enable" register in /proc/touchpanel/debug_info/main_register?

0

What is the value of "PWR_FLAG" in /proc/touchpanel/debug_info/main_register?

1

What is the value of "EDGE_REJECT" in /proc/touchpanel/debug_info/main_register?

1

The touch screen driver supports the self_delta proc node.

<p>False (B)</p> Signup and view all the answers

The touch screen driver supports the self_raw proc node.

<p>False (B)</p> Signup and view all the answers

What is the type of data stored in the baseline_data array in /proc/touchpanel/debug_info/baseline?

<p>Integer values</p> Signup and view all the answers

What is the highest numerical value in the first row of the diff_data array in /proc/touchpanel/debug_info/delta?

<p>7</p> Signup and view all the answers

Flashcards

touch_count

The number of touch events detected by the touch panel.

PWR_FLAG

Indicates the power status of the touch panel.

EDGE_REJECT

Whether to ignore spurious touch events.

/proc/touchpanel/debug_info/main_register

A system file providing touch panel debug information.

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JITTER_FLAG

A flag indicating if jitter (timing variations) is detected in touch events.

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HEADSET_FLAG

A flag indicating if a headset is detected.

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diff_data

Array of numbers representing differences between successive measurements of touch panel actions.

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/proc/touchpanel/debug_info/delta

System file storing delta data of touch panel events.

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basline_data

Data representing the baseline of touch panel actions.

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Study Notes

Touch Panel Debug Information

  • System Status:
    • es_enable: 0 (likely disabled)
    • touch_count: 0 (no touch detected)
    • PWR_FLAG: 1 (power flag set)
    • EDGE_REJECT: 1 (edge rejection is enabled)
    • JITTER_FLAG: 0 (no jitter detected)
    • HEADSET_FLAG: 0 (no headset detected)
    • HOPPING_FIX_FREQ_FLAG: 0 (hopping fix frequency feature not active)
    • HOPPING_POLLING_FLAG: 0 (hopping polling feature not active)
    • DEBUG_DIFFDATA_FLAG: 0
    • DEBUG_WKG_COORD_FLAG: 0
    • DEBUG_WKG_COORD_RECORD_FLAG: 0
    • DEBUG_WATER_POLLING_FLAG: 0

Delta Data

  • diff_data: Numerical data representing touch panel sensor changes over time.

  • Multiple numeric arrays represent the fluctuations, likely differences in the sensors' readings across several time points, or consecutive sensor measurements. Negative values suggest decreased pressure or movement away from the expected position. The dataset is relatively large, indicating a significant number of measurements.

Baseline Data

  • basline_data: Numerical data, likely representing the baseline sensor readings. Similar to diff_data, this array provides a potential reference point for touch input analysis. The raw values indicate precise sensor readings.

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