142 lines
5.2 KiB
C
142 lines
5.2 KiB
C
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//*****************************************************************************
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// mcasp_if.h
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//
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// MCASP interface APIs.
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//
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// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
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//
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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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// 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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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software 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 FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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// mcasp_if.h - Defines and prototypes for MultiChannel Audio Serial Port.
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//
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//*****************************************************************************
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#ifndef __MCASP_IF_H__
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#define __MCASP_IF_H__
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#define WFIFO_NUMDMA_WORDS 1
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#define MCASP_DMA_PORT_ADDR 0x4401E200
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//
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// Update the sampling freq, channels, sample length appropriately
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//
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typedef enum {
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SAMPLING_FREQ_8_KHZ = 8000,
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SAMPLING_FREQ_11_X_KHZ = 11025,
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SAMPLING_FREQ_16_KHZ = 16000,
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SAMPLING_FREQ_22_X_KHZ = 22050,
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SAMPLING_FREQ_32_KHZ = 32000,
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SAMPLING_FREQ_44_1_KHZ = 44100,
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SAMPLING_FREQ_48_KHZ = 48000
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} tESamplFreq;
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typedef enum {
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CH_MONO = 1,
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CH_STEREO = 2
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} tENumChannels;
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typedef enum {
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BIT_8_PCM = 8,
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BIT_16_PCM = 16,
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BIT_24_PCM = 24,
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BIT_32_PCM = 32
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} tESampleLen;
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#define I2S_MODE_RX 0x01
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#define I2S_MODE_TX 0x02
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#define I2S_MODE_RX_TX 0x03
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//
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// Audio Renderer Interface APIs
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//
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extern void AudioRendererInit();
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extern void AudioCapturerInit();
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extern void AudioInit();
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extern void McASPInit();
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extern void AudioRendererSetupCPUMode(void (*pfnAppCbHndlr)(void));
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extern void AudioRendererSetupDMAMode(void (*pfnAppCbHndlr)(void),
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unsigned long ulCallbackEvtSamples);
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extern void AudioCapturerSetupCPUMode(void (*pfnAppCbHndlr)(void));
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extern long AudioCapturerSetupDMAMode(void (*pfnAppCbHndlr)(void),
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unsigned long ulCallbackEvtSamples);
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extern long AudioSetupDMAMode(void (*pfnAppCbHndlr)(void),
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unsigned long ulCallbackEvtSamples,
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unsigned char RxTx);
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extern unsigned int* AudioRendererGetDMADataPtr();
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extern unsigned int* AudioCapturerGetDMADataPtr();
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extern void AudioCapturerConfigure(int iSamplingFrequency,
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short sNumOfChannels,
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short sBitsPerSample);
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extern void AudioRendererConfigure(int iSamplingFrequency,
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short sNumOfChannels,
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short sBitsPerSample);
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extern void AudioRendererStart();
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extern void AudioCapturerStart();
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extern void AudioRendererStop();
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extern void AudioRendererDeInit();
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extern unsigned int BitClockConfigure(int iSamplingFrequency,
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short sNumOfChannels,
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short sBitsPerSample);
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extern void AudioCaptureRendererConfigure(unsigned char bitsPerSample,
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unsigned short bitRate,
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unsigned char noOfChannels,
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unsigned char RxTx,
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unsigned char dma);
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extern void Audio_Start(unsigned char RxTx);
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __MCASP_IF_H__
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