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147 lines
4.9 KiB
147 lines
4.9 KiB
/**************************************************************************** |
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* examples/cdcacm/cdcacm_main.c |
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* |
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* Copyright (C) 2012 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#include <sys/types.h> |
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#include <stdio.h> |
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#include <debug.h> |
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#include <nuttx/usb/usbdev.h> |
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#include <nuttx/usb/cdcacm.h> |
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#include "cdcacm.h" |
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/**************************************************************************** |
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* Definitions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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/* All global variables used by this example are packed into a structure in |
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* order to avoid name collisions. |
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*/ |
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struct cdcacm_state_s g_cdcacm; |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* sercon_main |
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* |
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* Description: |
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* This is the main program that configures the CDC/ACM serial device. |
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* |
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****************************************************************************/ |
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int sercon_main(int argc, char *argv[]) |
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{ |
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int ret; |
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/* Check if there is a non-NULL USB mass storage device handle (meaning that the |
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* USB mass storage device is already configured). |
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*/ |
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if (g_cdcacm.handle) |
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{ |
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message("sercon:: ERROR: Already connected\n"); |
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return EXIT_FAILURE; |
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} |
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/* Then, in any event, enable trace data collection as configured BEFORE |
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* enabling the CDC/ACM device. |
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*/ |
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usbtrace_enable(TRACE_BITSET); |
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/* Initialize the USB CDC/ACM serial driver */ |
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message("sercon: Registering CDC/ACM serial driver\n"); |
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ret = cdcacm_initialize(CONFIG_EXAMPLES_CDCACM_DEVMINOR, &g_cdcacm.handle); |
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if (ret < 0) |
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{ |
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message("sercon: ERROR: Failed to create the CDC/ACM serial device: %d\n", -ret); |
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return EXIT_FAILURE; |
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} |
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message("sercon: Successfully registered the CDC/ACM serial driver\n"); |
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return EXIT_SUCCESS; |
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} |
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/**************************************************************************** |
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* serdis_main |
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* |
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* Description: |
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* This is a program entry point that will disconnect the CDC/ACM serial |
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* device. |
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* |
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****************************************************************************/ |
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int serdis_main(int argc, char *argv[]) |
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{ |
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/* First check if the USB mass storage device is already connected */ |
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if (!g_cdcacm.handle) |
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{ |
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message("serdis: ERROR: Not connected\n"); |
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return EXIT_FAILURE; |
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} |
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/* Then, in any event, disable trace data collection as configured BEFORE |
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* enabling the CDC/ACM device. |
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*/ |
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usbtrace_enable(0); |
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/* Then disconnect the device and uninitialize the USB mass storage driver */ |
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cdcacm_uninitialize(g_cdcacm.handle); |
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g_cdcacm.handle = NULL; |
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message("serdis: Disconnected\n"); |
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return EXIT_SUCCESS; |
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}
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