DISCUSSION: Developing Linux Device Drivers using Libusb API

reinoud · 08-11-2009, 06:30 PM

Most Compiler problems fixed by including:

stdbool.h (otherwise it doesn't know bool and true) and string.h (to remedy warnings about strlen)
Also, in C99 i can't use for (int i=0 bla bla)
first define int i; for (i=0 blabla) does the job.

Also rename read to read_from_device and write to write_to_device

muthumb14 · 03-23-2010, 07:15 AM

yes I agree that we can detaect the mounted USB through LIBUSB, could we write the program to detect the FILEs in the USB and to opne the FILEs etc..

Rgds,
Muthu

arkroan · 11-18-2010, 02:38 AM

Quote:

Configuration and Endpoints are one of the two important descriptors of any USB device. These descriptors are defined using the

Does this guide end at this point?? I am not able to see any more of it.

arkroan · 11-18-2010, 02:52 AM

Quote:

Originally Posted by alain91

Hello,

Here is the end of the article :

Important attributes of USB devices useful in device driver coding
Configuration and Endpoints are one of the two important descriptors of any USB device. These desciptors are defined using the “struct usb_config_descriptor” and “struct_usb_endpoint_descriptor” respectively .

dev->descriptor.idVendor : Reveals the Vendor-Id of the USB device connected to the system.

dev->descriptor.idProduct : Reveals the Product-Id of the USB device connected to the system.

dev->descriptor.iManufacturer : Reveals the name of the Manufacturer USB device connected to the system.

EndpointAddress:Combination of endpoint address and enpoint direction on a USB device.

InterfaceNumber : One of the several interfaces that is allocated to the connected USB device.

AlternateSetting:This is part of the a single interface allocated to the USB device.

Prerequites for Libusb programming
Linux system with Kernel 2.4 above series.
Proficiency in C language.
Good understanding of USB device internals.
Idea about USBFS.

Oh now i see it.. Sorry for the previous post.