143 lines
4.7 KiB
C
143 lines
4.7 KiB
C
/****************************************************************************
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* apps/examples/i2schar/i2schar.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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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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/****************************************************************************
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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 Data
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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 architecture-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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