linux系统USB键盘驱动源码+使用说明文档.zip

linux系统下USB键盘驱动源码+使用文档说明 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. 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…*/ static unsigned char usb_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, 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, 85, 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 struct usb_device_id usb_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*/ { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, usb_kbd_id_table);/*指定设备ID表*/ 4. 定义USB键盘结构体： struct usb_kbd { struct input_dev *dev; /*定义一个输入设备*/ struct usb_device *usbdev;/*定义一个usb设备*/ unsigned char old[8]; /*按键离开时所用之数据缓冲区*/ struct urb *irq/*usb键盘之中断请求块*/, *led/*usb键盘之指示灯请求块*/; unsigned char newleds;/*目标指定灯状态*/ char name[128];/*存放厂商名字及产品名字*/ char phys[64]