GPIO Button Driver and Capture Trigger

[mu2d2]

Implement GPIO input handling for a momentary push button that will trigger the OCR capture pipeline. Uses either a kernel IRQ handler or userspace libgpiod edge detection. Includes software debounce logic.

DoD:

• Physical button wired to a GPIO pin
• Button press detected via IRQ or libgpiod
• Software debounce prevents multiple triggers from a single press (debounce window documented)
• Button event is communicated to userspace via device node, Unix socket, or signal
• Test program demonstrates: press button creates event logged with timestamp to syslog
• 20 consecutive presses produce exactly 20 events
• GPIO pin conflict check documented (no conflict with I2C, SPI, UART)
• Source committed with Yocto recipe integrating into the image

[mu2d2]

encountering build errors with page-speak core image. Trying to clean and and debug issues. The VM crashed during initial build trying to clean image, and reattempting test

[mu2d2]

issue with local build needed, to clean and edit amount of cores used in parallel computing