在C / C ++ / Java中查找USB设备的信息

Question

I need to list existing USB hub and the devices connected in the hub using my C++ program.

I can able to print the USB Hub and devices connected in hub from terminal using the commands

lsusb lsusb -v

I want to use that feature in my C++ program.

How I can do this programmatically. Is there any C++ classes available to use in my Qt application or in c or java.this is one help taken from https://unix.stackexchange.com/questions/61484/find-the-information-of-usb-devices-in-c

#include <stdio.h>
#include <usb.h>
main(){
struct usb_bus *bus;
struct usb_device *dev;
usb_init();
usb_find_busses();
usb_find_devices();
for (bus = usb_busses; bus; bus = bus->next)
    for (dev = bus->devices; dev; dev = dev->next){
        printf("Trying device %s/%s\n", bus->dirname, dev->filename);
        printf("\tID_VENDOR = 0x%04x\n", dev->descriptor.idVendor);
        printf("\tID_PRODUCT = 0x%04x\n", dev->descriptor.idProduct);
    }

} does anyone know how to compile this??? im facing problem

Answer 1

You need to install libusb-dev and libusb

sudo apt-get update
sudo apt-get install libusb
sudo apt-get install libusb-dev

After that compile your code with -lusb

gcc usbtest.c -o usbtest -lusb

Answer 2

Check this: How to execute a command and get output of command within C++ using POSIX?

You could use system() if you do not need the stdout / stderr .

You could use popen() if you want to capture the stdout .

You could use execlp() to run the command you desire. The function call for your question would be something like execlp("ls","Isusb","Isusb","-v")
Read this for more information: http://linux.about.com/library/cmd/blcmdl3_execlp.htm