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comparison libuwrap/open_close.c @ 12:80e521d6609c

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libuwrap: implement USB device open and close
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 07 Sep 2023 06:39:49 +0000
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11:fe4231326fb2 12:80e521d6609c
1 /*
2 * Here we implement functions for opening and closing the libusb device
3 * we have located.
4 */
5
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <usb.h>
9 #include "open_close.h"
10
11 usb_dev_handle *usbwrap_open_dev(struct usb_device *dev, int detach)
12 {
13 usb_dev_handle *usbh;
14
15 usbh = usb_open(dev);
16 if (!usbh) {
17 fprintf(stderr, "error: usb_open() failed\n");
18 exit(1);
19 }
20 if (detach)
21 usb_detach_kernel_driver_np(usbh, 0);
22 if (usb_claim_interface(usbh, 0) != 0) {
23 fprintf(stderr, "error: usb_claim_interface() failed\n");
24 exit(1);
25 }
26 return usbh;
27 }
28
29 void usbwrap_close_dev(usb_dev_handle *usbh)
30 {
31 usb_release_interface(usbh, 0);
32 usb_close(usbh);
33 }