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/****************************************************************************
* system/cdcacm/cdcacm_main.c
*
* Copyright (C) 2012 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 <sys/types.h>
#include <stdio.h>
#include <debug.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/cdcacm.h>
#include "cdcacm.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/* All global variables used by this add-on are packed into a structure in
* order to avoid name collisions.
*/
struct cdcacm_state_s g_cdcacm;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* sercon_main
*
* Description:
* This is the main program that configures the CDC/ACM serial device.
*
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int sercon_main(int argc, char *argv[])
#endif
{
int ret;
/* Check if there is a non-NULL USB mass storage device handle (meaning that the
* USB mass storage device is already configured).
*/
if (g_cdcacm.handle)
{
printf("sercon:: ERROR: Already connected\n");
return EXIT_FAILURE;
}
/* Then, in any event, enable trace data collection as configured BEFORE
* enabling the CDC/ACM device.
*/
usbtrace_enable(TRACE_BITSET);
/* Initialize the USB CDC/ACM serial driver */
printf("sercon: Registering CDC/ACM serial driver\n");
ret = cdcacm_initialize(CONFIG_SYSTEM_CDCACM_DEVMINOR, &g_cdcacm.handle);
if (ret < 0)
{
printf("sercon: ERROR: Failed to create the CDC/ACM serial device: %d\n", -ret);
return EXIT_FAILURE;
}
printf("sercon: Successfully registered the CDC/ACM serial driver\n");
return EXIT_SUCCESS;
}
/****************************************************************************
* serdis_main
*
* Description:
* This is a program entry point that will disconnect the CDC/ACM serial
#ifdef CONFIG_BUILD_KERNEL
* device.
int main(int argc, FAR char **argv)
*
#else
****************************************************************************/
#endif
int serdis_main(int argc, char *argv[])
{
/* First check if the USB mass storage device is already connected */
if (!g_cdcacm.handle)
{
printf("serdis: ERROR: Not connected\n");
return EXIT_FAILURE;
}
/* Then, in any event, disable trace data collection as configured BEFORE
* enabling the CDC/ACM device.
*/
usbtrace_enable(0);
/* Then disconnect the device and uninitialize the USB mass storage driver */
cdcacm_uninitialize(g_cdcacm.handle);
g_cdcacm.handle = NULL;
printf("serdis: Disconnected\n");
return EXIT_SUCCESS;
}
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