wave.h

IAR编译环境下的AT91SAM7S64芯片的PWM输出演示

//*---------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*---------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*---------------------------------------------------------------------------
//* File Name           : wave.h
//* Object              : wave file description
//*
//* 1.0 21/01/02 JPP    : Creation
//*---------------------------------------------------------------------------

#ifndef wave_h
#define wave_h

//* --------------------------- include file ----------------------------------


//* --------------------------- Constant definition ---------------------------

#define 	WAVE_MONO		1
#define 	WAVE_STEREO		2
#define 	WAVE_TYPE_PCM	1

#define WAVE_SAMPEL_RATE	8000

#define FILE_LOCATION  0x104000
/*---------------------------  Structure definition -------------------------*/

typedef struct
{
	unsigned char riff[4]; 		// The word "riff"
	unsigned int fileSize;
	unsigned char wave[4]; 		// "wave"
	unsigned char fmt[4]; 		// "fmt " (note space)
	unsigned int fmtSize; 		// should be 16
	unsigned short wavType; 	// 0x01 is PCM
	unsigned short monoStereo; 	// mono=1 stereo=2
	unsigned int sampleRate;  	// in Hz???
	unsigned int sampleSpeed; 	// in bytes/second
	unsigned short alignment; 	// block alignment
	unsigned short sampleWidth; // in bits/sample
	unsigned char data[4]; 		// "data"
	unsigned int chunkSize; 	// Bytes in this data section
	unsigned int dataStart; 	// The first actual sample
} WaveHeaderDESC;


typedef struct
{
	WaveHeaderDESC	 *File;
	volatile int	  cmpt;
	int				  block_size;
	char 			 *ptr;
} WaveITDESC;


/*---------------------------  Function Prototyping -------------------------*/

extern void wave_print_header(WaveHeaderDESC *ptHeader);
extern int wave_check_header(WaveHeaderDESC *ptHeader);

extern void Setwave(void);
extern void OutputWave(char *ptr_data,int size);

#endif //* wave_h