Usb鼠标驱动使用LIBUSB

Usb mouse driver using LIBUSB

本文关键字:LIBUSB 鼠标 Usb      更新时间:2023-10-16

我想在Ubuntu上尝试"userspace"驱动程序(它不是我的代码)。我有这样的代码:

#include <stdio.h>
#include <string.h>
#include <usb.h>
#include <usbpp.h>
#define DEBUG_LEVEL 0
struct usb_bus *busses,*bus,*dbus;
int main(int argc, char *argv[])
{
        struct usb_device *dev;
        char *buf;
        int n,x,r, ret;
        char *ibus, *idev;
        char string[64];
        int found = 0;       
        usb_dev_handle *udev;
        usb_set_debug(DEBUG_LEVEL);
        usb_init(); //initilize the usb library
        usb_find_busses();
        usb_find_devices();
        busses=usb_get_busses();
        //use the command line arguments for Bus and Device
        if (argc >= 3) {
                ibus = argv[1];
                idev = argv[2];
        }
        else { printf("Usage: usbtest <Bus> <Device> [<numBytes>])n"); exit(1); }
        printf("Bus = %s Device = %sn", ibus, idev);
        for (bus=busses; bus && (found == 0); bus=bus->next) { // busses loop
                if (strcmp(bus->dirname, ibus) == 0) {
                        for (dev=bus->devices; dev; dev=dev->next) { // devices loop
                                if (strcmp(dev->filename, idev) == 0) { dbus=bus; found=1; break; }
                        }
                }
        }
        if (found == 0) { printf("Unable to find the required device !nexitingn"); exit(1); }
        printf("Found devicen");
        printf("Now we are dealing with device from vendor ID : %d (%x) n",dev->descriptor.idVendor,dev->descriptor.idVendor);
        printf("Trying to open the device...n");
        if (udev=usb_open(dev)) printf("Device opened successfully.n");
        else { printf("Operation failed :-("); exit(1);}
        buf=(char*)calloc(1,100);
        if (usb_get_driver_np(udev,0,buf,100)) printf("Could not read the driver name :-( %sn",buf); 
        else printf("Kernel Using Driver :n");
        // detach the driver from the kernel , seems to be just like rmmod? 
        if (usb_detach_kernel_driver_np(udev,0)) printf("Error detaching the device :-(n"); 
        else printf("Device detached successfully from the kernel.n");
        // reserving the device interface for our application, if another driver/software
        //is using the device , it will return 'interface busy'
        if (r=usb_claim_interface(udev,0)) printf("Interface Claimed !!n"); 
        printf("Interface Claim Status : %dn",r);
        printf("Device Protocol : %dn",dev->descriptor.bDeviceProtocol);
        printf("Report Length : %dn",dev->descriptor.bLength);
        printf("Decriptor Type : %dn",dev->descriptor.bDescriptorType);
        printf("End Points : %dn",dev->config->interface->altsetting->bNumEndpoints);
        printf("Interface Class : %dn",dev->config->interface->altsetting->bInterfaceClass);
        printf("Protocol : %dn",dev->config->interface->altsetting->bInterfaceProtocol);
        printf("Interface Number: %dn",dev->config->interface->altsetting->bInterfaceNumber);
        printf("Device Filename : %sn",dev->filename);
        printf("Bus Dir Name : %sn",dbus->dirname);
        usb_get_string_simple(udev,dev->descriptor.iManufacturer,string,sizeof(string));
        printf("Device Manfucaturer : %sn",string);
        usb_get_string_simple(udev,dev->descriptor.iProduct,string,sizeof(string));
        printf("Product Name : %sn",string);
        usb_get_string_simple(udev,dev->descriptor.iSerialNumber,string,sizeof(string));
        printf("Device Serial Number: %sn",string);
        printf("End point addresses : 0x%xn",dev->config->interface->altsetting->endpoint->bEndpointAddress);
        int numBytes = 4;
        int errCount = 0;
        unsigned char endPoint = 0x81;
    int i;
    int tmp1 = 5;
    int tmp2 = 5;
        // reset usb device if command line numBytes = 0 and exit
        if (argc == 4 && atoi(argv[3]) == 0) { usb_reset(udev); exit(0); }
        // use command line value for numBytes if supplied
        if (argc == 4) numBytes = atoi(argv[3]);
        if (numBytes > 64) numBytes = 64;
        while (1) {  
                for (x=0; x<numBytes; x++)  string[x]=0;
                // read numBytes bytes using interrupt_read,
                r = usb_interrupt_read(udev, endPoint, string, numBytes, 0); 
                system("clear");
        tmp1+=string[1];
        tmp2+=string[2];
        if (tmp1>=0 && tmp2>=0 && tmp1<=150 && tmp2<=50){
        for (i=0;i<tmp2;i++) printf("n");
        for (i=0;i<tmp1;i++) printf(".");
        if (string[0]==0) printf ("X");
        else if (string[0]==1) printf("L");
        else if(string[0]==2) printf("R");
        else if(string[0]==3) printf("LR");
        else if(string[0]==4) printf("M");
        }
        else {
          if(tmp1<0) tmp1=0;
          else if (tmp1>150) tmp1=150;
          if (tmp2<0) tmp2=0;
          else if (tmp2>50) tmp2=50;
        }
        if (string[3]==1) printf ("nSCROLL UP");
        if (string[3]==-1) printf ("nSCROLL DOWN");
        printf ("n(%d, %d)",tmp1,tmp2);
        if ( r < 0 ) errCount++;
                if (errCount >= 100) break; 
                usb_clear_halt(udev,endPoint); 
        }
        printf("Closing Device.n");
        usb_release_interface(udev,0);
        usb_close(udev);
        return EXIT_SUCCESS;
}

在这段代码使用API从libusb-0.1 -但我不知道它的确切版本。可能-它是libusb-0.1.12(它有两个头"usb.h"answers"usbpp.h",在这段代码中使用)。我已经在ubuntu上下载了这个版本,使用

安装它
./configure && make && make install && sudo ldconfig

之后我试着做

gcc -c mouse.c -w

来编译此代码。但它不能编译。它在"usbpp.h"(在标准中包括"string"或"list")或其他史密斯中有不同的错误。谁能告诉我,我到底做错了什么?我怎么能尝试这个代码?PS -我试着在ubuntu 9.04和ubuntu 12上测试这段代码,两者都是虚拟机。这是我大学的任务。

usbpp.h是一个c++头文件,但是你运行的GCC是一个c编译器。

我找到了另一种解决这个问题的方法:

gcc -o mouse ./mouse.cpp -lstdc++ -lusb