nuttx-apps/nshlib/nsh_usbtrace.c

/****************************************************************************
 * apps/nshlib/nsh_usbtrace.c
 *
 *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdio.h>
#include <debug.h>

#include <nuttx/usb/usbdev_trace.h>

#ifdef CONFIG_NSH_USBDEV_TRACE

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/****************************************************************************
 * Private Types
 ****************************************************************************/

/****************************************************************************
 * Private Function Prototypes
 ****************************************************************************/

/****************************************************************************
 * Private Data
 ****************************************************************************/

/****************************************************************************
 * Public Data
 ****************************************************************************/

/****************************************************************************
 * Private Functions
 ****************************************************************************/

/****************************************************************************
 * Name: nsh_tracecallback
 ****************************************************************************/

/****************************************************************************
 * Name: nsh_tracecallback
 *
 * Description:
 *   This is part of the USB trace logic
 *
 ****************************************************************************/

static int usbtrace_syslog(FAR const char *fmt, ...)
{
  va_list ap;
  int ret;

  /* Let vsyslog do the real work */

  va_start(ap, fmt);
  ret = vsyslog(LOG_INFO, fmt, ap);
  va_end(ap);
  return ret;
}

/****************************************************************************
 * Name: nsh_tracecallback
 *
 * Description:
 *   This is part of the USB trace logic
 *
 ****************************************************************************/

static int nsh_tracecallback(struct usbtrace_s *trace, void *arg)
{
  usbtrace_trprintf(usbtrace_syslog, trace->event, trace->value);
  return 0;
}

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: nsh_usbtrace
 *
 * Description:
 *   The function is called from the nsh_session() to dump USB data to the
 *   SYSLOG device.
 *
 * Input Parameters:
 *   None
 *
 * Returned Values:
 *   None
 *
 ****************************************************************************/

void nsh_usbtrace(void)
{
  (void)usbtrace_enumerate(nsh_tracecallback, NULL);
}

#endif /* CONFIG_NSH_USBDEV_TRACE */