101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
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/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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#ifndef AC97C_H
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#define AC97C_H
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//------------------------------------------------------------------------------
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// Constants
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//------------------------------------------------------------------------------
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/// The channel is already busy with a transfer.
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#define AC97C_ERROR_BUSY 1
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/// The transfer has been stopped by the user.
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#define AC97C_ERROR_STOPPED 2
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/// Codec channel index.
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#define AC97C_CHANNEL_CODEC 0
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/// Channel A index.
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#define AC97C_CHANNEL_A 1
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/// Channel B index.
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#define AC97C_CHANNEL_B 2
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/// Codec transmit/receive transfer index.
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#define AC97C_CODEC_TRANSFER 0
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/// Channel A receive transfer index.
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#define AC97C_CHANNEL_A_RECEIVE 1
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/// Channel A transmit transfer index.
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#define AC97C_CHANNEL_A_TRANSMIT 2
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/// Channel B receive transfer index.
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#define AC97C_CHANNEL_B_RECEIVE 3
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/// Channel B transmit transfer index.
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#define AC97C_CHANNEL_B_TRANSMIT 4
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//------------------------------------------------------------------------------
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// Types
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//------------------------------------------------------------------------------
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/// AC97C transfer callback function.
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typedef void (*Ac97Callback)(void *pArg,
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unsigned char status,
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unsigned int remaining);
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//------------------------------------------------------------------------------
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// Exported functions
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//------------------------------------------------------------------------------
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extern void AC97C_Configure();
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extern void AC97C_ConfigureChannel(unsigned char channel, unsigned int cfg);
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extern void AC97C_AssignInputSlots(unsigned char channel, unsigned int slots);
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extern void AC97C_AssignOutputSlots(unsigned char channel, unsigned int slots);
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extern unsigned char AC97C_Transfer(
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unsigned char channel,
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unsigned char *pBuffer,
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unsigned int numSamples,
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Ac97Callback callback,
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void *pArg);
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extern unsigned char AC97C_IsFinished(unsigned char channel);
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extern void AC97C_WriteCodec(unsigned char address, unsigned short data);
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extern unsigned short AC97C_ReadCodec(unsigned char address);
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extern void AC97C_SetChannelSize(unsigned char channel, unsigned char size);
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extern void AC97C_CancelTransfer(unsigned char channel);
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#endif //#ifndef AC97C_H
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