icu_extint_demo Directory Reference

Directory dependency graph for icu_extint_demo:

Directories
	src

Detailed Description

Routes the SW1 push-button (P009 -> IRQ13-DS) through the ICU with falling-edge detection and the digital filter at PCLKB / 64, then polls the IRQCR detect bit directly. Each press toggles LED1 and prints a line.

Presses need a human. No bench GPIO is wired to the SW1 net, so nothing automated can inject the falling edge, and the unattended gate can only scrape the banner emitted once after the IRQ is armed. That covers clock, console and ICU bring-up – not the interrupt itself. Wiring a stimulus GPIO to P009 is what would close the gap.

kint_demo reaches the same pin through the board switch API instead of reading IRQCR.