test_ez_audio.h

ADSP 地层驱动

/*********************************************************************************

Copyright(c) 2005 Analog Devices, Inc. All Rights Reserved. 

This software is proprietary and confidential.  By using this software you agree
to the terms of the associated Analog Devices License Agreement.  


Description:
			This is the source code for the Blackfin EZ-Audio Power On Self Test 
			(POST).
			
*********************************************************************************/
#ifndef _TEST_EZ_AUDIO_H_
#define _TEST_EZ_AUDIO_H_




//////////////////////////////////////////////////////////////////////////////
// 						common defines
//////////////////////////////////////////////////////////////////////////////
// SPI transfer mode
#define TIMOD_DMA_TX 0x0003


#define AUDIO_IN_BUF_LEN			256
#define NUM_TEST_FREQUENCIES 		7
#define REQUIRED_SAMPLES			((256) * 250)
#define SAMPLE_RATE_T 				((float)48000.0)
#define SAMPLES_PER_SIN 			(float)((float)SAMPLE_RATE_T/g_fDesired_Freq)
#define AMPLITUDE					((float)(0xFFFFFFFF/2))//((float)8388607)			
#define PI							((float)3.141592765309)

#define ACCEPTABLE_DEVIATION_PCT	((float)0.15)
#define ACCEPTABLE_DEVIATION		(g_fDesired_Freq  * ACCEPTABLE_DEVIATION_PCT)
#define MAX_DESIRED_FREQ			(g_fDesired_Freq + ACCEPTABLE_DEVIATION)
#define MIN_DESIRED_FREQ			(g_fDesired_Freq - ACCEPTABLE_DEVIATION)
#define MIN_SIGNAL_STRENGTH			(float)20.0


//////////////////////////////////////////////////////////////////////////////
// 						External Globals
//////////////////////////////////////////////////////////////////////////////
extern volatile float 			g_fDesired_Freq;
extern volatile float 			g_fSamplesPerSin;
extern volatile int 			g_iBufferSampleSize;

extern volatile unsigned char 	g_ucAudioInEnable;
extern volatile long  			g_lSampleCount;
extern volatile int 			g_iSampleIndex;
extern unsigned int 			g_uiOutputSampleIndex;

extern volatile long 			g_lAudioInputBufferL[AUDIO_IN_BUF_LEN];
extern volatile long 			g_lAudioInputBufferR[AUDIO_IN_BUF_LEN];
extern volatile long 			g_lAudioOutputBufferRef[AUDIO_IN_BUF_LEN];


//////////////////////////////////////////////////////////////////////////////
// 						Function prototypes
//////////////////////////////////////////////////////////////////////////////
int Test_Channel(long* psRealIn);



#endif //#ifndef _TEST_EZ_AUDIO_H_