Linux USB HID Device test Code

/****************************************************************** author:drivermonkey* Mail:[email  protected]* phone:18575593141* qq:196568501* blog:http://blog.csdn.net/drivermonkey* Date:02/07/2015 ************** /#include <pthread.h> #include <string.h> #include <stdio.h> #include <ctype.h> #include <fcntl.h> #include <errno.h> #include <stdio.h># Include <stdlib.h> #include <unistd.h> #define Hid_max_packet_size 64#define hid_buffer_size (10*1024*1024 )//10M bytestypedef struct {char null_array[hid_max_packet_size];} buffer_offset_size_t;static Char hid_read_buffer[hid_buffer_size];static char hid_write_buffer[hid_buffer_size]; static int hid_file_handle = 0;static Const char* hid_file_name = "/dev/hidg0"; static int hid_init (void); static int hid_re AD (void* buffer, int buffer_size), static int hid_write (void* buffer, int buffer_size);/******************************* ********************* Function Name:main * author:drivermonkey * function Description:main function just for HID temp testing * Input argv: * Output argv: * Return: * Be careful: *****************************************************************/in T Main (void) {int read_size = 0;int Test_count = 100;hid_init (); while (test_count--) {memset (Hid_read_buffer, 0x00, hid_ buffer_size); read_size = Hid_read (Hid_read_buffer, hid_buffer_size);//printf ("Getting report::%s \ n", Hid_read_ buffer); memset (Hid_write_buffer, 0x00, hid_buffer_size); strcpy (Hid_write_buffer, Hid_read_buffer); Hid_write (hid_ Write_buffer, read_size);} return 0;} /***************************************************************** * Function name:hid_init * Author:DriverMonkey * Function description:init HID * Input argv: * Output argv: * return:>= 0-no Error < 0-reading error * be Carefu L:must be called Befoore HID is used! /static int Hid_init (void) {if (hid_fIle_handle = open (Hid_file_name, O_RDWR, 0666)) < 0) {perror (hid_file_name); return hid_file_handle;} Else{return Hid_file_handle;}} /***************************************************************** * Function Name:hid_read * Author:DriverMonkey * Function description:read Data Form HID driver * Input argv:buffer_size-buffer size * Output Argv:buffer-buffer to S Ave reading out data * return:>= 0-read size < 0-reading error * be careful: ********************************** /static int Hid_read (void* buffer, int buffer_size) {if (buffer = = NULL) {perror ("hid_ READ::p ointer error! "); return-1;} Return read (hid_file_handle, buffer, buffer_size);} /***************************************************************** * Function Name:hid_read * Author:DriverMonkey * Function description:read Data Form HID driver * Input argv:buffer_size-buffer size * Output Argv:buffer-buffer to S Ave reading out data * return:>= 0-no error < 0-reading error * be careful: *****************************************************************/static int hid_write (void* buffer,  int buffer_size) {int Return_v = 0;int Writting_count = Buffer_size/hid_max_packet_size;int remainding_size = buffer_size % hid_max_packet_size;buffer_offset_size_t* Buffer_offset = (buffer_offset_size_t*) buffer;if (buffer = = NULL) {perror ( "Hid_write::p ointer error!"); return-1;} while (writting_count--) {Return_v = write (Hid_file_handle, buffer_offset,hid_max_packet_size); if (Return_v < 0) { Perror ("hid_write::writting error!"); return Return_v;} buffer_offset++;} Return_v = Write (Hid_file_handle, Buffer_offset, remainding_size); return return_v;}

Linux USB HID Device test Code