gpio_input_demo Directory Reference

Directory dependency graph for gpio_input_demo:

Directories
	src

Detailed Description

Polls the on-board user switch SW1 (P009) and drives LED1 to mirror it – LED1 lit while SW1 is held. There is no UART output; LED1 is the only observable signal.

Nobody presses a button on an unattended bench, and no stimulus GPIO is wired to the SW1 net, so the automated gate cannot test the input path at all. It probes the poll loop's tick counter over SWD instead, which proves the chip is up and the loop is iterating and says nothing whatever about SW1 -> LED1. Confirming that path needs a human at the board, or a driver wired to P009.