DM816X 实现 USB HID Gadget 鼠标键盘功能【转】
转自：https://my.oschina.net/renyongke/blog/410695
开发环境： 平台： DM8168 内核 ：linux 2.6.32 RDK：DVRRDK_04.00.00.03 USB口：DM8168有两个USB口可供选择，因为特殊原因我选择的是USB1，请根据实际需要选择USB口 ，下面的配置会稍微有些不同。
##1配置内核 依据参照http://processors.wiki.ti.com/index.php/DM81xx_AM38XX_USB_User_Guide#Introduction http://processors.wiki.ti.com/index.php/Usbgeneralpage#One_port_as_host_and_other_port_as_Gadget_.28for_DM81XX.29。 摘录如下：
- Select host and gadget support
Menuconfig->Device Drviers->USB Support <> Support for Host-side USB
[ ] USB verbose debug messages
[] USB announce new devices
*** Miscellaneous USB options ***
......
<*> USB Gadget Support --->
- Select USB OTG support (for TI816X)
Menuconfig->Device Drviers->USB Support
<> Inventra Highspeed Dual Role Controller (TI, ADI, ...)
*** Platform Glue Layer ***
< > TUSB6010
< > OMAP2430 and onwards
< > AM35x
<> TI81XX
TI816X usb connector's ID pin control (from software setting) --->
Force TI816X USB0 to (Host mode) --->
Force TI816X USB1 to (Host mode) --->
Driver Mode (Both host and peripheral: USB OTG (On The Go) Device) --->
[ ] Disable DMA (always use PIO)
[*] Enable debugging messages
- Select Gadget device controller and gadget driver as modules
Menuconfig->Device Drviers->USB Support
<> USB Gadget Support --->
--- USB Gadget Support
[ ] Debugging messages (DEVELOPMENT) (NEW)
[ ] Debugging information files (DEVELOPMENT) (NEW)
[ ] Debugging information files in debugfs (DEVELOPMENT) (NEW)
(2) Maximum VBUS Power usage (2-500 mA) (NEW)
USB Peripheral Controller (Inventra HDRC USB Peripheral (TI, ADI, ...)) --->
<M> USB Gadget Drivers
<M> Gadget Zero (DEVELOPMENT)
[ ] HNP Test Device (NEW)
< > Audio Gadget (EXPERIMENTAL) (NEW)
<M> Ethernet Gadget (with CDC Ethernet support)
[] RNDIS support (NEW)
[ ] Ethernet Emulation Model (EEM) support (NEW)
< > Gadget Filesystem (EXPERIMENTAL) (NEW)
< > Function Filesystem (EXPERIMENTAL) (NEW)
<M> File-backed Storage Gadget
[*] File-backed Storage Gadget testing version
- Unselect the OTG Targeted Peripherals list
Menuconfig->Device Drviers->USB Support
<> Support for Host-side USB
....
[] USB runtime power management (autosuspend) and wakeup
-*- OTG support
[ ] Rely on OTG Targeted Peripherals List
[ ] Disable external hubs
完成以上步骤，先保存退出。
##2设备注册
为了实现设备被识别，需加入设备注册。修改hid.c 路径： DVRRDK_04.00.00.03/ti_tools/linux_lsp/kernel/linux-dvr-rdk/drivers/usb/gadget。
由于鼠标键盘为常见USB设备，设备描述符很好得到，如果是要自定义hid设备请参照usb协议.pdf(网络上很容易找到)。
修改如下
#include <linux/usb/g_hid.h>
/* hid descriptor for a keyboard */
static struct hidg_func_descriptor pcdm8168_keyboard_data = {
.subclass = 0, /* No subclass */
.protocol = 1, /* Keyboard */
.report_length = 8,
.report_desc_length = 63,
.report_desc = {
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
0x09, 0x06, /* USAGE (Keyboard) */
0xa1, 0x01, /* COLLECTION (Application) */
0x05, 0x07, /* USAGE_PAGE (Keyboard) */
0x19, 0xe0, /* USAGE_MINIMUM (Keyboard LeftControl) */
0x29, 0xe7, /* USAGE_MAXIMUM (Keyboard Right GUI) */
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
0x25, 0x01, /* LOGICAL_MAXIMUM (1) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x95, 0x08, /* REPORT_COUNT (8) */
0x81, 0x02, /* INPUT (Data,Var,Abs) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x81, 0x03, /* INPUT (Cnst,Var,Abs) */
0x95, 0x05, /* REPORT_COUNT (5) */
0x75, 0x01, /* REPORT_SIZE (1) */
0x05, 0x08, /* USAGE_PAGE (LEDs) */
0x19, 0x01, /* USAGE_MINIMUM (Num Lock) */
0x29, 0x05, /* USAGE_MAXIMUM (Kana) */
0x91, 0x02, /* OUTPUT (Data,Var,Abs) */
0x95, 0x01, /* REPORT_COUNT (1) */
0x75, 0x03, /* REPORT_SIZE (3) */
0x91, 0x03, /* OUTPUT (Cnst,Var,Abs) */
0x95, 0x06, /* REPORT_COUNT (6) */
0x75, 0x08, /* REPORT_SIZE (8) */
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
0x25, 0x65, /* LOGICAL_MAXIMUM (101) */
0x05, 0x07, /* USAGE_PAGE (Keyboard) */
0x19, 0x00, /* USAGE_MINIMUM (Reserved) */
0x29, 0x65, /* USAGE_MAXIMUM (Keyboard Application) */
0x81, 0x00, /* INPUT (Data,Ary,Abs) */
0xc0 /* END_COLLECTION */
}
};
/*hid descriptor for a mouse*/
static struct hidg_func_descriptor pcdm8168_mouse_data = {
.subclass = 0, /*NO SubClass*/
.protocol = 2, /*Mouse*/
.report_length = 4,
.report_desc_length = 52,
.report_desc={
0x05,0x01, /*Usage Page (Generic Desktop Controls)*/
0x09,0x02, /*Usage (Mouse)*/
0xa1,0x01, /*Collction (Application)*/
0x09,0x01, /*Usage (pointer)*/
0xa1,0x00, /*Collction (Physical)*/
0x05,0x09, /*Usage Page (Button)*/
0x19,0x01, /*Usage Minimum(1)*/
0x29,0x03, /*Usage Maximum(3) */
0x15,0x00, /*Logical Minimum(1)*/
0x25,0x01, /*Logical Maximum(1)*/
0x95,0x03, /*Report Count(5) */
0x75,0x01, /*Report Size(1)*/
0x81,0x02, /*Input(Data,Variable,Absolute,BitFiled)*/
0x95,0x01, /*Report Count(1)*/
0x75,0x05, /*Report Size(5) */
0x81,0x01, /*Input(Constant,Array,Absolute,BitFiled) */
0x05,0x01, /*Usage Page (Generic Desktop Controls)*/
0x09,0x30, /*Usage(x)*/
0x09,0x31, /*Usage(y)*/
0x09,0x38, /*Usage(Wheel)*/
0x15,0x81, /*Logical Minimum(-127)*/
0x25,0x7f, /*Logical Maximum(127)*/
0x75,0x08, /*Report Size(8)*/
0x95,0x02, /*Report Count(2) */
0x81,0x06, /*Input(Data,Variable,Relative,BitFiled)*/
0xc0, /*End Collection*/
0xc0 /*End Collection*/
}
};
static struct platform_device pcdm8168_hid_keyboard = {
.name = "hidg",
.id = 0,
.num_resources = 0,
.resource = 0,
.dev.platform_data = &pcdm8168_keyboard_data,
};
static struct platform_device pcdm8168_hid_mouse = {
.name = "hidg",
.id = 1,
.num_resources = 0,
.resource = 0,
.dev.platform_data = &pcdm8168_mouse_data,
};
static int __init hidg_init(void)
{
int status;
status = platform_device_register(&pcdm8168_hid_keyboard);
if (status < 0)
{
printk("platform_driver hid keyboard:*****wrong\n");
platform_device_unregister(&pcdm8168_hid_keyboard);
return status;
}
status = platform_device_register(&pcdm8168_hid_mouse);
if (status < 0)
{
printk("platform_driver hid mouse:*****wrong\n");
platform_device_unregister(&pcdm8168_hid_mouse);
return status;
}
status = platform_driver_probe(&hidg_plat_driver,
hidg_plat_driver_probe);
if (status < 0)
{
printk("platform_driver_probe:*****wrong\n");
return status;
}
status = usb_composite_probe(&hidg_driver, hid_bind);
if (status < 0)
platform_driver_unregister(&hidg_plat_driver);
return status;
}
static void __exit hidg_cleanup(void)
{
platform_driver_unregister(&hidg_plat_driver);
platform_device_unregister(&pcdm8168_hid_keyboard);
platform_device_unregister(&pcdm8168_hid_mouse);
usb_composite_unregister(&hidg_driver);
}
##3编译 继续完成内核配置的后续操作 1）Build uImage and usb gadget modules
Build the kernel image and the two usb gadget as modules (like g_ether.ko, g_file_storage.ko, g_mass_storage.ko or g_zero.ko ..etc).
编译内核 以及 上方修改的代码 ，根据自己的开发环境编译 我的是 make lsp ##4测试
通过USB线把8168板子和PC机 连接接起来。 1）Insert the two gadget modules
Load the kernel image and Make sure above setup is done before insert the modules. Insert the gadget modules for usb0 port.
insmod <module>.ko (eg: #insert g_ether.ko) Insert the gadget
module for usb1 port.
insmod <module>.ko (eg: #insert g_file_storage.kofile=<filepath> stall=0 buflen=65536)
8168上电，进入工作目录，make init 和 make load（个人需要） 由于我所用板子使用的是USB1，没有使用USB0，但是由于8168的特性，USB0也必须进行配置， 我的配置如下： insmod g_ether.ko insmod g_hid.ko
这时打开PC的设别管理器会发现，8168已经被识别成鼠标和键盘。 为了测试其功能是否正常需要写一小测试程序， 如下：
#include <pthread.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#define BUF_LEN 512
struct options{
const char *opt;
unsigned char val;
};
static struct options kmod[] = {
{.opt = "--left-ctrl", .val = 0x01},
{.opt = "--right-ctrl", .val = 0x10},
{.opt = "--left-shift", .val = 0x02},
{.opt = "--right-shift", .val = 0x20},
{.opt = "--left-alt", .val = 0x04},
{.opt = "--right-alt", .val = 0x40},
{.opt = "--left-meta", .val = 0x08},
{.opt = "--right-meta", .val = 0x80},
{.opt = NULL}
};
static struct options kval[] = {
{.opt = "--return", .val = 0x28},
{.opt = "--esc", .val = 0x29},
{.opt = "--bckspc", .val = 0x2a},
{.opt = "--tab", .val = 0x2b},
{.opt = "--spacebar", .val = 0x2c},
{.opt = "--caps-lock", .val = 0x39},
{.opt = "--f1", .val = 0x3a},
{.opt = "--f2", .val = 0x3b},
{.opt = "--f3", .val = 0x3c},
{.opt = "--f4", .val = 0x3d},
{.opt = "--f5", .val = 0x3e},
{.opt = "--f6", .val = 0x3f},
{.opt = "--f7", .val = 0x40},
{.opt = "--f8", .val = 0x41},
{.opt = "--f9", .val = 0x42},
{.opt = "--f10", .val = 0x43},
{.opt = "--f11", .val = 0x44},
{.opt = "--f12", .val = 0x45},
{.opt = "--insert", .val = 0x49},
{.opt = "--home", .val = 0x4a},
{.opt = "--pageup", .val = 0x4b},
{.opt = "--del", .val = 0x4c},
{.opt = "--end", .val = 0x4d},
{.opt = "--pagedown", .val = 0x4e},
{.opt = "--right", .val = 0x4f},
{.opt = "--left", .val = 0x50},
{.opt = "--down", .val = 0x51},
{.opt = "--kp-enter", .val = 0x58},
{.opt = "--up", .val = 0x52},
{.opt = "--num-lock", .val = 0x53},
{.opt = NULL}
};
int keyboard_fill_report(char report[8],char buf[BUF_LEN],int *hold)
{
char *tok = strtok(buf, " ");
int key = 0;
int i = 0;
for (; tok != NULL; tok = strtok(NULL, " ")) {
if (strcmp(tok, "--quit") == 0)
return -1;
if (strcmp(tok, "--hold") == 0) {
*hold = 1;
continue;
}
if (key < 6) {
for (i = 0; kval[i].opt != NULL; i++)
if (strcmp(tok, kval[i].opt) == 0) {
report[2 + key++] = kval[i].val;
break;
}
if (kval[i].opt != NULL)
continue;
}
if (key < 6)
if (islower(tok[0])) {
report[2 + key++] = (tok[0] - ('a' - 0x04));
continue;
}
for (i = 0; kmod[i].opt != NULL; i++)
if (strcmp(tok, kmod[i].opt) == 0) {
report[0] = report[0] | kmod[i].val;
break;
}
if (kmod[i].opt != NULL)
continue;
if (key < 6)
fprintf(stderr, "unknown option: %s\n", tok);
}
return 8;
}
static struct options mmod[] = {
{.opt = "--b1", .val = 0x01},
{.opt = "--b2", .val = 0x02},
{.opt = "--b3", .val = 0x04},
{.opt = NULL}
};
int mouse_fill_report(char report[8],char buf[BUF_LEN],int *hold)
{
char *tok = strtok(buf, " ");
int mvt = 0;
int i = 0;
for (; tok != NULL; tok = strtok(NULL, " ")) {
if (strcmp(tok, "--quit") == 0)
return -1;
if (strcmp(tok, "--hold") == 0) {
*hold = 1;
continue;
}
for (i = 0; mmod[i].opt != NULL; i++)
if (strcmp(tok, mmod[i].opt) == 0)
{
report[0] = report[0] | mmod[i].val;
break;
}
if (mmod[i].opt != NULL)
continue;
if (!(tok[0] == '-' && tok[1] == '-') && mvt < 2)
{
errno = 0;
report[1 + mvt++] = (char)strtol(tok, NULL, 0);
if (errno != 0)
{
fprintf(stderr, "Bad value:'%s'\n", tok);
report[1 + mvt--] = 0;
}
continue;
}
fprintf(stderr, "unknown option: %s\n", tok);
}
return 3;
}
void print_options(char c)
{
int i = 0;
if (c == 'k') {
printf(" keyboard options:\n"
" --hold\n");
for (i = 0; kmod[i].opt != NULL; i++)
printf("\t\t%s\n", kmod[i].opt);
printf("\n keyboard values:\n"
" [a-z] or\n");
for (i = 0; kval[i].opt != NULL; i++)
printf("\t\t%-8s%s", kval[i].opt, i % 2 ? "\n" : "");
printf( " --quit to close\n");
printf("\n");
}
else if (c == 'm')
{
printf(" mouse options:\n"
" --hold\n");
for (i = 0; mmod[i].opt != NULL; i++)
printf("\t\t%s\n", mmod[i].opt);
printf("\n mouse values:\n"
" Two signed numbers\n"
" --quit to close\n");
}
}
int main(int argc,const char *argv[])
{
const char *filename = NULL;
int fd = 0;
char buf[BUF_LEN];
int cmd_len;
char report[8];
int to_send = 8;
int hold = 0;
fd_set rfds;
int retval,i;
if (argc < 3) {
fprintf(stderr, "Usage: %s devname mouse|keyboard\n",
argv[0]);
return 1;
}
if(argv[2][0] != 'k' && argv[2][0] != 'm')
{
return 2;
}
filename = argv[1];
if ((fd = open(filename, O_RDWR, 0666)) == -1) {
perror(filename);
return 3;
}
print_options(argv[2][0]);
while (42) {
FD_ZERO(&rfds);
FD_SET(STDIN_FILENO, &rfds);
FD_SET(fd, &rfds);
retval = select(fd + 1, &rfds, NULL, NULL, NULL);
if (retval == -1 && errno == EINTR)
continue;
if (retval < 0) {
perror("select()");
return 4;
}
if (FD_ISSET(fd, &rfds)) {
cmd_len = read(fd, buf, BUF_LEN - 1);
printf("recv report:");
for (i = 0; i < cmd_len; i++)
printf(" %02x", buf[i]);
printf("\n");
}
if (FD_ISSET(STDIN_FILENO, &rfds)) {
memset(report, 0x0, sizeof(report));
cmd_len = read(STDIN_FILENO, buf, BUF_LEN - 1);
if (cmd_len == 0)
break;
buf[cmd_len - 1] = '\0';
hold = 0;
memset(report, 0x0, sizeof(report));
if (argv[2][0] == 'k')
to_send = keyboard_fill_report(report, buf, &hold);
else if (argv[2][0] == 'm')
to_send = mouse_fill_report(report, buf, &hold);
if (to_send == -1)
break;
if (write(fd, report, to_send) != to_send) {
perror(filename);
return 5;
}
if (!hold) {
memset(report, 0x0, sizeof(report));
if (write(fd, report, to_send) != to_send) {
perror(filename);
return 6;
}
}
}
}
close(fd);
return 0;
}
需要交叉编译器进行编译，我使用的是arm-none-linux-gnueabi-gcc-4.3.3
编译完成后，把生成的执行文件cp到设备中分别执行 ./pcdm8168_hid /dev/hidg0 k和./pcdm8168_hid /dev/hidg1 m 根据提示进行操作即可。
声明:上文是参考http://www.oschina.net/question/1174645_135969完成的，思路和代码大体是按其思路，只有修改了个别设备描述符
DM816X 实现 USB HID Gadget 鼠标键盘功能【转】的更多相关文章
- USB HID复合设备实例—键盘+鼠标
实现这种USB HID复合设备有两种方法,在<USB HID协议入门>一节已经讲到其中一种方法,说一个USB HID设备可以包含多种功能的报告描述符合集,这样可以实现复合设备,如带鼠标功能 ...
- 使用Gadget 做usb鼠标键盘设备
使用Gadget 做usb鼠标键盘设备 感谢TI社区提供的好帮助啊!http://e2e.ti.com/support/arm/sitara_arm/f/791/p/571771/2103409?pi ...
- 玩转X-CTR100 l USB功能-HOST鼠标键盘
更多塔克创新资讯欢迎登陆[塔克社区 www.xtark.cn ][塔克博客 www.cnblogs.com/xtark/ ] X-CTR100控制器具有MicroUSB接口,支持SLAVE和HOST两 ...
- usb的hid鼠标键盘报告描述符(五)
title: usb的hid鼠标键盘报告描述符 tags: linux date: 2018/12/20/ 18:05:08 toc: true --- usb的hid鼠标键盘报告描述符 https: ...
- linux 读取 USB HID鼠标坐标和点击 在 LCD上显示
首先要,编译内核时启用了 USB HID 设备.启用了 鼠标 . 在开发板上插入usb 时会有如下提示. 可以看到,多了一个 mouse0 和 eventX 打出来的是我的 联想鼠标. 1, 在 终端 ...
- Qt移植对USB鼠标键盘、触摸屏的支持
.USB键盘 经过一番搜索,发现对Qt键盘的支持主要关系到两个方面: 1. 键盘类型确定: 4.7以前的Qt版本,如果是PS2圆孔键盘,Qt编译时需加上选项:-qt-kbd-vr41xx(未测试):如 ...
- USB HID介绍【转】
本文转载自:http://blog.csdn.net/leo_wonty/article/details/6721214 HID是一种USB通信协议,无需安装驱动就能进行交互,在学习HID之前,先来复 ...
- USB HID 协议入门
转载请注明来源:cuixiaolei的技术博客 USB HID设备类的应用场合 USB HID类是USB设备的一个标准设备类,包括的设备非常多.HID类设备定义它属于人机交互操作的设备,用于控制计算机 ...
- USB HID介绍
HID是一种USB通信协议,无需安装驱动就能进行交互,在学习HID之前,先来复习一下USB协议的相关内容. USB设备描述符-概述 当插入USB设备后,主机会向设备请求各种描述符来识别设备.那什么是设 ...
随机推荐
- 第一次Spring会议成果意见汇总
第一组:9-625 只看到了界面,而两台笔记本电脑通过局域网进行通信的功能则没有看到,没有看到实质性的成果.他们的软件还是非常实用的,它仅通过局域网就能通信,大大减少了流量费用,提高了通信效率,希望 ...
- (Alpha)Let's-Chronos分数分配规则
Requirement: 每个团队开一个讨论会,协商讨论团队贡献分的分配方式.每个团队的团队贡献分为50分/人.每个人分数不能相同,请详细说明分数的分配规则. 为了完成此次的团队贡献分的分配任务,我们 ...
- Mybatis：Eclipse引入dtd约束文件使得xml文件有提示
https://blog.csdn.net/lsx2017/article/details/82558135
- 基于 Laravel 的 文件管理
以 laravel 5.5 为例,框架集成了文件系统和云存储功能 可以实现文件夹列表.创建.重命名.删除,文件列表.上传.重命名.删除等操作 一.先进行配置 在 config 文件夹下有 filesy ...
- 改善C++ 程序的150个建议学习之建议7：时刻提防内存溢出
作为一个程序员,对内存溢出问题肯定不陌生,它已经是软件开发历史上存在了近40年的大难题.在内存空间中,当要表示的数据超出了计算机为该数据分配的空 间范围时,就产生了溢出,而溢出的多余数据则可以作为指令 ...
- 微信小程序初窥-环境搭建
关于微信小程序的背景知识,在此不做阐述,可以自行搜索了解.本文将介绍微信小程序的账号的注册,IDE的下载,创建一个实例小程序. 1.注册小程序 前去链接:https://mp.weixin.qq.co ...
- information_schema系列十一
1: INNODB_CMP 和INNODB_CMP_RESET 这两个表存储的是关于压缩INNODB信息表的时候的相关信息, Column name Description PAGE_SIZE Com ...
- linux下转换windows文件格式为unix sed -i 's/\r//' <filename> 转化为unix格式
sed -i 's/\r//' <filename> 转化为unix格式
- MT【77】函数的定义理解
答案:D.比如C 中令$x^2+1=2,x=-1,1,$ 得$f(2)=0,2$与定义矛盾,A,B同理排除. D中注意到$x^2-2x$与$|x-1|$对称轴都是$x=1$. 评:函数的定义,首先是两 ...
- 【刷题】BZOJ 2734 [HNOI2012]集合选数
Description <集合论与图论>这门课程有一道作业题,要求同学们求出{1, 2, 3, 4, 5}的所有满足以 下条件的子集:若 x 在该子集中,则 2x 和 3x 不能在该子集中 ...