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Hi,

Here is a part of the 'usb' output:

USB 0 (EHCI) v1.10, v1.01 DDK, v1.01 HCD
Control, Interrupt, Bulk, High speed

Device Address : 1
Upstream Host Controller : 0
Upstream Device Address : 0
Upstream Port : 4
Upstream Port Speed : High
Vendor : 0x0951 (Kingston)
Product : 0x1600 (DataTraveler II )
Device Release : r1.00
USB Spec Release : v2.00
Serial Number : 5B6502002021

Which function from USB library can read the Serial Number field?
Is it usbd_string() ?
If yes how to determine it second parametr, called 'index' ?

Reagrds,
Jacek

Hi,

Here is my code:

#include <stdio.h
#include <stdlib.h
#include <errno.h
#include <sys/usbdi.h

#define VENDOR 0x0951
#define DEVICE 0x1600

usbd_device_ident_t interest = {
VENDOR,
DEVICE,
USBD_CONNECT_WILDCARD,
USBD_CONNECT_WILDCARD,
USBD_CONNECT_WILDCARD,
};

usbd_funcs_t funcs = {
_USBDI_NFUNCS,
NULL,
NULL,
NULL
};

usbd_connect_parm_t cparms = {
NULL,
USB_VERSION,
USBD_VERSION,
0,
0, // argc
NULL, // *argv
0,
&interest,
&funcs
};

struct usbd_connection *connection;
struct usbd_device *device;
usbd_device_instance_t instance;

usbd_device_descriptor_t *ddesc=NULL;
struct usbd_desc_node *node=NULL;
usbd_string_descriptor_t *sdesc=NULL;

int main (void) {
int error,status;
int devno,hostid;
char* ID;

error = usbd_connect (&cparms, &connection);
if (error != EOK) {
printf ("\n usbd_connect() error number: %d \n",error);
return -1;
}

instance.config = 1;
instance.iface = 0;
instance.alternate = 0;

for (hostid =0; hostid < 8; ++hostid) {
for (devno = 0; devno < 16; ++devno) {
memset(&instance, USBD_CONNECT_WILDCARD,
sizeof(usbd_device_instance_t));
instance.path = hostid, instance.devno = devno;
status = usbd_attach(connection, &instance,0,&device);
// the device has been found
if (status == EOK) {
ddesc = usbd_device_descriptor(device,&node );
if (ddesc == NULL ) {
printf("\n usbd_device_descriptor () error !!\n");
return -1;
}
// is it a specific device ?
if (ddesc->idVendor == VENDOR) {
sdesc = usbd_languages_descriptor(device,&node );
ID = usbd_string(device,3,sdesc->bString[0]);
printf ("\n I found it -> hostid: %d, devno: %d, seriall
number:
%s \n",hostid,devno,ID);
if (usbd_detach (device) != EOK)
printf ("\n usbd_detach (): error ! \n");
}
else {
if (usbd_detach (device) != EOK)
printf ("\n usbd_detach (): error ! \n");
}
}
}
}
if (usbd_disconnect(connection )!= EOK)
printf ("\n usbd_disconnect (): error ! \n");

return 0;
}

and it works fine under QNX Neutrino.

But I have some problems under QNX4.
I compile application as follows:
# cc -lusbdi -liomgr -T1 -o usb_test usb_test.c

but it returns everytime:
# ./usb_test

usbd_connect() error number: 275

Why I can't connect to the USB stack ?
Am I doing something wrong ?

Regards,
Jacek


U¿ytkownik "Jacek Rudnicki" <jacek.rudnicki@quantum.com.pl> napisa³ w
wiadomo¶ci news:fbme0d$kp9$1@inn.qnx.com...
Hi,

Here is a part of the 'usb' output:

USB 0 (EHCI) v1.10, v1.01 DDK, v1.01 HCD
Control, Interrupt, Bulk, High speed

Device Address : 1
Upstream Host Controller : 0
Upstream Device Address : 0
Upstream Port : 4
Upstream Port Speed : High
Vendor : 0x0951 (Kingston)
Product : 0x1600 (DataTraveler II )
Device Release : r1.00
USB Spec Release : v2.00
Serial Number : 5B6502002021

Which function from USB library can read the Serial Number field?
Is it usbd_string() ?
If yes how to determine it second parametr, called 'index' ?

Reagrds,
Jacek