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author | Gregory Nutt <gnutt@nuttx.org> | 2013-11-10 14:08:45 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-11-10 14:08:45 -0600 |
commit | 09adf63b2a9d364123bff73902472a974dc1b0b2 (patch) | |
tree | 4e246ca2a0ed312359613b5c002bd924562afa1f /apps/examples/i2schar/i2schar.h | |
parent | 9336004836dc64aa433b8ec963113604b26ee784 (diff) | |
download | nuttx-09adf63b2a9d364123bff73902472a974dc1b0b2.tar.gz nuttx-09adf63b2a9d364123bff73902472a974dc1b0b2.tar.bz2 nuttx-09adf63b2a9d364123bff73902472a974dc1b0b2.zip |
Add apps/examples/i2schar that will eventually use the I2C character drvier to verify I2S
Diffstat (limited to 'apps/examples/i2schar/i2schar.h')
-rw-r--r-- | apps/examples/i2schar/i2schar.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/apps/examples/i2schar/i2schar.h b/apps/examples/i2schar/i2schar.h new file mode 100644 index 000000000..9596f7dc4 --- /dev/null +++ b/apps/examples/i2schar/i2schar.h @@ -0,0 +1,177 @@ +/**************************************************************************** + * examples/examples/i2schar/i2schar.h + * + * Copyright (C) 2013 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. + * + ****************************************************************************/ + +#ifndef __APPS_EXAMPLES_I2SCHAR_I2SCHAR_H +#define __APPS_EXAMPLES_I2SCHAR_I2SCHAR_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <pthread.h> + +/**************************************************************************** + * Definitions + ****************************************************************************/ +/* Configuration ************************************************************/ +/* CONFIG_NSH_BUILTIN_APPS - Build the I2SCHAR test as an NSH built-in + * function. Default: Built as a standalone problem + * CONFIG_EXAMPLES_I2SCHAR_DEVPATH - The default path to the I2S character + * device. Default: /dev/i2schar0 + */ + +#ifndef CONFIG_AUDIO_I2SCHAR +# error "I2S character device support is not enabled (CONFIG_AUDIO_I2SCHAR)" +#endif + +#ifndef CONFIG_EXAMPLES_I2SCHAR_DEVPATH +# define CONFIG_EXAMPLES_I2SCHAR_DEVPATH "/dev/is2char0" +#endif + +#ifdef CONFIG_EXAMPLES_I2SCHAR_TX +# ifndef CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS +# define CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS 4 +# endif +# ifndef CONFIG_EXAMPLES_I2SCHAR_TXSTACKSIZE +# define CONFIG_EXAMPLES_I2SCHAR_TXSTACKSIZE 1536 +# endif +#else +# undef CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS +# define CONFIG_EXAMPLES_I2SCHAR_TXBUFFERS 0 +#endif + +#ifdef CONFIG_EXAMPLES_I2SCHAR_RX +# ifndef CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS +# define CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS 4 +# endif +# ifndef CONFIG_EXAMPLES_I2SCHAR_RXSTACKSIZE +# define CONFIG_EXAMPLES_I2SCHAR_RXSTACKSIZE 1536 +# endif +#else +# undef CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS +# define CONFIG_EXAMPLES_I2SCHAR_RXBUFFERS 0 +#endif + +#ifndef CONFIG_EXAMPLES_I2SCHAR_BUFSIZE +# efine CONFIG_EXAMPLES_I2SCHAR_BUFSIZE 256 +#endif + +/* Debug ********************************************************************/ + +#ifdef CONFIG_CPP_HAVE_VARARGS +# ifdef CONFIG_DEBUG +# define message(...) syslog(__VA_ARGS__) +# define msgflush() +# else +# define message(...) printf(__VA_ARGS__) +# define msgflush() fflush(stdout) +# endif +#else +# ifdef CONFIG_DEBUG +# define message syslog +# define msgflush() +# else +# define message printf +# define msgflush() fflush(stdout) +# endif +#endif + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +struct i2schar_state_s +{ + bool initialized; + FAR char *devpath; +#ifdef CONFIG_EXAMPLES_I2SCHAR_TX + int txcount; +#endif +#ifdef CONFIG_EXAMPLES_I2SCHAR_RX + int rxcount; +#endif +}; + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +extern struct i2schar_state_s g_i2schar; + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Name: i2schar_devinit() + * + * Description: + * Perform architecuture-specific initialization of the I2s hardware and + * registration of the I2S character driver CHAR hardware. If + * CONFIG_EXAMPLES_I2SCHAR_DEVINIT is defined, then board-specific logic + * must provide this function. + * + ****************************************************************************/ + +#ifdef CONFIG_EXAMPLES_I2SCHAR_DEVINIT +int i2schar_devinit(void); +#endif + +/**************************************************************************** + * Name: i2schar_transmitter() + * + * Description: + * This is the entry point for the transmitter thread. + * + ****************************************************************************/ + +#ifdef CONFIG_EXAMPLES_I2SCHAR_TX +pthread_addr_t i2schar_transmitter(pthread_addr_t arg); +#endif + +/**************************************************************************** + * Name: i2schar_receiver() + * + * Description: + * This is the entry point for the receiver thread. + * + ****************************************************************************/ + +#ifdef CONFIG_EXAMPLES_I2SCHAR_RX +pthread_addr_t i2schar_receiver(pthread_addr_t arg); +#endif + +#endif /* __APPS_EXAMPLES_I2SCHAR_I2SCHAR_H */ |