jvfan#jvfan.github.io#2019-09-02-USB鼠标驱动简单示例1

--- layout: post title: USB鼠标驱动简单示例 subtitle: USB鼠标移动产生中断执行定义好的函数 date: 2019-9-2 author: Jerry Chen header-img: img/post-bg-debug.png catalog: true tags: - 应用 - USB鼠标 --- ### 开始 首先从内核中**去掉**鼠标驱动： 路径：Device Drivers ---> HID Devices ---> USB Human Interface Device (full HID) support #### 编写USB鼠标驱动 首先关于匹配信息：采用协议的方式匹配，也就是不按照厂商id和产品id进行匹配，而是只要使用该协议的设备都可以匹配成功。  编写usb_demo_drv.c ``` #include #include #include #include #define DRIVER_VERSION "v1.6" #define DRIVER_AUTHOR "Vojtech Pavlik " #define DRIVER_DESC "USB HID Boot Protocol mouse driver" #define DRIVER_LICENSE "GPL" MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE(DRIVER_LICENSE); static int pipe,maxp,count; static signed char *data; static struct urb *mouse_urb; static dma_addr_t data_dma; //下面是usb鼠标中断执行的函数 static void check_usb_data(struct urb *urb){ printk("count is %d time!\n",count++); //每个usb_submit_urb检测一次，故在执行函数中提交可多次检测 usb_submit_urb(mouse_urb, GFP_KERNEL); } static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); struct usb_endpoint_descriptor *endpoint; printk("usb mouse probe!\n"); //[可选]打印一些描述信息（一般�