178 lines
6.0 KiB
C
178 lines
6.0 KiB
C
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/****************************************************************************
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* examples/examples/i2schar/i2schar.h
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*
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* Copyright (C) 2013 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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#ifndef __APPS_EXAMPLES_I2SCHAR_I2SCHAR_H
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#define __APPS_EXAMPLES_I2SCHAR_I2SCHAR_H
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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 <pthread.h>
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* CONFIG_NSH_BUILTIN_APPS - Build the I2SCHAR test as an NSH built-in
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* function. Default: Built as a standalone problem
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* CONFIG_EXAMPLES_I2SCHAR_DEVPATH - The default path to the I2S character
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* device. Default: /dev/i2schar0
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*/
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#ifndef CONFIG_AUDIO_I2SCHAR
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# error "I2S character device support is not enabled (CONFIG_AUDIO_I2SCHAR)"
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#endif
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#ifndef CONFIG_EXAMPLES_I2SCHAR_DEVPATH
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# define CONFIG_EXAMPLES_I2SCHAR_DEVPATH "/dev/is2char0"
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#endif
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#ifdef CONFIG_EXAMPLES_I2SCHAR_TX
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# ifndef CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS
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# define CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS 4
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# endif
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# ifndef CONFIG_EXAMPLES_I2SCHAR_TXSTACKSIZE
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# define CONFIG_EXAMPLES_I2SCHAR_TXSTACKSIZE 1536
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# endif
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#else
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# undef CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS
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# define CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS 0
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#endif
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#ifdef CONFIG_EXAMPLES_I2SCHAR_RX
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# ifndef CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS
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# define CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS 4
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# endif
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# ifndef CONFIG_EXAMPLES_I2SCHAR_RXSTACKSIZE
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# define CONFIG_EXAMPLES_I2SCHAR_RXSTACKSIZE 1536
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# endif
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#else
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# undef CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS
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# define CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS 0
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#endif
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#ifndef CONFIG_EXAMPLES_I2SCHAR_BUFSIZE
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# efine CONFIG_EXAMPLES_I2SCHAR_BUFSIZE 256
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#endif
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/* Debug ********************************************************************/
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#ifdef CONFIG_CPP_HAVE_VARARGS
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# ifdef CONFIG_DEBUG
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# define message(...) syslog(__VA_ARGS__)
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# define msgflush()
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# else
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# define message(...) printf(__VA_ARGS__)
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# define msgflush() fflush(stdout)
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# endif
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#else
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# ifdef CONFIG_DEBUG
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# define message syslog
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# define msgflush()
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# else
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# define message printf
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# define msgflush() fflush(stdout)
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# endif
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct i2schar_state_s
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{
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bool initialized;
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FAR char *devpath;
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#ifdef CONFIG_EXAMPLES_I2SCHAR_TX
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int txcount;
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#endif
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#ifdef CONFIG_EXAMPLES_I2SCHAR_RX
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int rxcount;
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#endif
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};
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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extern struct i2schar_state_s g_i2schar;
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: i2schar_devinit()
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*
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* Description:
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* Perform architecuture-specific initialization of the I2s hardware and
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* registration of the I2S character driver CHAR hardware. If
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* CONFIG_EXAMPLES_I2SCHAR_DEVINIT is defined, then board-specific logic
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* must provide this function.
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*
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****************************************************************************/
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#ifdef CONFIG_EXAMPLES_I2SCHAR_DEVINIT
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int i2schar_devinit(void);
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#endif
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/****************************************************************************
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* Name: i2schar_transmitter()
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*
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* Description:
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* This is the entry point for the transmitter thread.
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*
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****************************************************************************/
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#ifdef CONFIG_EXAMPLES_I2SCHAR_TX
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pthread_addr_t i2schar_transmitter(pthread_addr_t arg);
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#endif
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/****************************************************************************
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* Name: i2schar_receiver()
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*
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* Description:
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* This is the entry point for the receiver thread.
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*
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****************************************************************************/
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#ifdef CONFIG_EXAMPLES_I2SCHAR_RX
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pthread_addr_t i2schar_receiver(pthread_addr_t arg);
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#endif
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#endif /* __APPS_EXAMPLES_I2SCHAR_I2SCHAR_H */
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