int iqrf_get_device_list(usb_addr list[], int n_devices)
{
int n;
n = usb_get_device_list(list, n_devices, false);
if (n < 0)
ERR("can't get device list\n");
return n;
}
int iqrf_get_device_count(void)
{
int n;
n = usb_get_device_list(NULL, 256, true);
if (n < 0)
ERR("can't get device count\n");
return n;
}
static int usbOpenDevice(usb_device_handle **device, int vendor,
char *vendorName, int product, char *productName)
{
usb_device_handle *handle = NULL;
int errorCode = USB_ERROR_NOTFOUND;
static int didUsbInit = 0;
int j;
int r;
if(!didUsbInit){
didUsbInit = 1;
usb_init(&ctx);
}
usb_device **dev_list;
int dev_list_len = usb_get_device_list(ctx, &dev_list);
for (j=0; j<dev_list_len; ++j) {
usb_device *dev = dev_list[j];
struct usb_device_descriptor descriptor;
usb_get_device_descriptor(dev, &descriptor);
if (descriptor.idVendor == vendor && descriptor.idProduct == product) {
char string[256];
/* we need to open the device in order to query strings */
r = usb_open(dev, &handle);
if (!handle) {
errorCode = USB_ERROR_ACCESS;
fprintf(stderr,
"%s: Warning: cannot open USB device: %s\n",
progname, strerror(usb_to_errno(r)));
continue;
}
errorCode = 0;
/* now check whether the names match: */
/* if vendorName not given ignore it (any vendor matches) */
r = usb_get_string_descriptor_ascii(handle, descriptor.iManufacturer & 0xff, string, sizeof(string));
if (r < 0) {
if ((vendorName != NULL) && (vendorName[0] != 0)) {
errorCode = USB_ERROR_IO;
fprintf(stderr,
"%s: Warning: cannot query manufacturer for device: %s\n",
progname, strerror(usb_to_errno(r)));
}
} else {
if (verbose > 1)
fprintf(stderr,
"%s: seen device from vendor ->%s<-\n",
progname, string);
if ((vendorName != NULL) && (vendorName[0] != 0) && (strcmp(string, vendorName) != 0))
errorCode = USB_ERROR_NOTFOUND;
}
/* if productName not given ignore it (any product matches) */
r = usb_get_string_descriptor_ascii(handle, descriptor.iProduct & 0xff, string, sizeof(string));
if (r < 0) {
if ((productName != NULL) && (productName[0] != 0)) {
errorCode = USB_ERROR_IO;
fprintf(stderr,
"%s: Warning: cannot query product for device: %s\n",
progname, strerror(usb_to_errno(r)));
}
} else {
if (verbose > 1)
fprintf(stderr,
"%s: seen product ->%s<-\n",
progname, string);
if((productName != NULL) && (productName[0] != 0) && (strcmp(string, productName) != 0))
errorCode = USB_ERROR_NOTFOUND;
}
if (errorCode == 0)
break;
usb_close(handle);
handle = NULL;
}
}
usb_free_device_list(dev_list,1);
if (handle != NULL){
errorCode = 0;
*device = handle;
}
return errorCode;
}
