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1、实用如何编写Linux下的USB键盘驱动1.指定USB键盘驱动所需的头文件:#include/*内核头文件，含有内核一些常用函数的原型定义*/#include/*定义内存分配的一些函数*/#include/*模块编译必须的头文件*/#include/*输入设备相关函数的头文件*/#include/*linux初始化模块函数定义*/#include/*USB设备相关函数定义*
2、/2.定义键盘码表数组：/*使用第一套键盘扫描码表:A-1E;B-30;C-2E…*/staticunsignedcharusb_kbd_keycode[256]={0,0,0,0,30,48,46,32,18,33,34,35,23,36,37,38,50,49,24,25,16,19,31,20,22,47,17,45,21,44,2,3,4,5,6,7,8,9,10,11,28,1,14,15,57,12,13,26,27,43,43,39,40,41,51,52,53,58,59,60,61,62,63,64,65,66,67,68,87
3、,88,99,70,119,110,102,104,111,107,109,106,105,108,103,69,98,55,74,78,96,79,80,81,75,76,77,71,72,73,82,83,86,127,116,117,183,184,185,186,187,188,189,190,191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,115,114,0,0,0,121,0,89,93,124,92,94,95,0,0,0,122,123,90,91,8
4、5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29,42,56,125,97,54,100,126,164,166,165,163,161,115,114,113,150,158,159,128,136,177,178,176,142,152,173,140};3.编写设备ID表：static
5、structusb_device_idusb_kbd_id_table[]={{USB_INTERFACE_INFO(3,1,1)},/*3,1,1分别表示接口类,接口子类,接口协议;3,1,1为键盘接口类;鼠标为3,1,2*/{}/*Terminatingentry*/};MODULE_DEVICE_TABLE(usb,usb_kbd_id_table);/*指定设备ID表*/4.定义USB键盘结构体：structusb_kbd{structinput_dev*dev;/*定义一个输入设备*/structusb_device*usbdev;/*
6、定义一个usb设备*/文档实用unsignedcharold[8];/*按键离开时所用之数据缓冲区*/structurb*irq/*usb键盘之中断请求块*/,*led/*usb键盘之指示灯请求块*/;unsignedcharnewleds;/*目标指定灯状态*/charname[128];/*存放厂商名字及产品名字*/charphys[64];/*设备之节点*/unsignedchar*new;/*按键按下时所用之数据缓冲区*/structusb_ctrlrequest*cr;/*控制请求结构*/unsignedchar*leds;/*当前指示
7、灯状态*/dma_addr_tcr_dma;/*控制请求DMA缓冲地址*/dma_addr_tnew_dma;/*中断urb会使用该DMA缓冲区*/dma_addr_tleds_dma;/*指示灯DAM缓冲地址*/};1.编写USB键盘驱动结构(任何一个LINUX下的驱动都有个类似的驱动结构)：/*USB键盘驱动结构体*/staticstructusb_driverusb_kbd_driver={.name="usbkbd",/*驱动名字*/.probe=usb_kbd_probe,/*驱动探测函数,加载时用到*/.disconnect=usb_
8、kbd_disconnect,/*驱动断开函数,在卸载时用到*/.id_table=usb_kbd_id_table,/*驱动设备ID表
