button.c

来自「SMDK2440 boot code, base on vivi」· C语言 代码 · 共 36 行

//#include <stdio.h>
#include <button.h>
#include <vstring.h>
#include <param.h>

static button_handler_t *button_handlers = NULL;

void
add_button_handler(button_handler_t *handler)
{
	if (button_handlers == NULL) {
		button_handlers = handler;
	} else {
		handler->next = button_handlers;
		button_handlers = handler;
	}
}

void
check_buttons(void)
{
	button_handler_t *handler = button_handlers;
	printk("Cheking buttons\n");
	while (handler != NULL) {
		if (handler->func()) {	/* If button is pressed */
			if (handler->name != NULL)
				printk("  Detected %s button.\n", handler->name);
			add_linux_cmd_line(handler->cmdstr);
		}
		if (handler->next != NULL)
			handler = handler->next;
		else
			handler = NULL;
	}
}