view libuwrap/open_close.c @ 58:4890ded06a8b

cp2102-decode-baudtab program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Sep 2023 20:33:26 +0000
parents 80e521d6609c
children
line wrap: on
line source

/*
 * Here we implement functions for opening and closing the libusb device
 * we have located.
 */

#include <stdio.h>
#include <stdlib.h>
#include <usb.h>
#include "open_close.h"

usb_dev_handle *usbwrap_open_dev(struct usb_device *dev, int detach)
{
	usb_dev_handle *usbh;

	usbh = usb_open(dev);
	if (!usbh) {
		fprintf(stderr, "error: usb_open() failed\n");
		exit(1);
	}
	if (detach)
		usb_detach_kernel_driver_np(usbh, 0);
	if (usb_claim_interface(usbh, 0) != 0) {
		fprintf(stderr, "error: usb_claim_interface() failed\n");
		exit(1);
	}
	return usbh;
}

void usbwrap_close_dev(usb_dev_handle *usbh)
{
	usb_release_interface(usbh, 0);
	usb_close(usbh);
}