linux按按键产生中断

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/input.h>

static irqreturn_t keyboard_interrupt(int irq, void *dev_id)
{
    struct input_event ev;
    int ret;

    ret = input_event(dev_id, EV_KEY, KEY_A, 1); // 模拟按键按下
    if (ret)
        printk(KERN_ERR "Error reading input event\n");

    ret = input_sync(dev_id);
    if (ret)
        printk(KERN_ERR "Error syncing input device\n");

    return IRQ_HANDLED;
}

static int __init keyboard_init(void)
{
    int irq = IRQ_KEYBOARD; // 假设键盘中断号为IRQ_KEYBOARD

    if (request_irq(irq, keyboard_interrupt, IRQF_SHARED, "keyboard", NULL)) {
        printk(KERN_ERR "Unable to claim keyboard irq\n");
        return -EBUSY;
    }

    printk(KERN_INFO "Keyboard interrupt handler registered\n");
    return 0;
}

static void __exit keyboard_exit(void)
{
    free_irq(IRQ_KEYBOARD, NULL);
    printk(KERN_INFO "Keyboard interrupt handler unregistered\n");
}

module_init(keyboard_init);
module_exit(keyboard_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("A simple keyboard interrupt handler");