dec6713_codec.c

非常好的从codec测试程序,使用了MCASP和IIC

/******************************************************************************/
/*  Copyright 2004 by SEED Electronic Technology LTD.                         */
/*  All rights reserved. SEED Electronic Technology LTD.                      */
/*  Restricted rights to use, duplicate or disclose this code are             */
/*  granted through contract.                                                 */
/******************************************************************************/
/********************************************************************************\
\*DEC6713_CODEC.c		-Codec AIC23B test programme.
\*
\*
\*
\********************************************************************************/
#include <csl.h>
#include <csl_mcasp.h>
#include <csl_i2c.h>
#include <DEC6713.h>
#include <codec.h>
#include <IIC.h>

extern far void vectors();
Uint32 DataBuffer[1000] = {0};
Uint32 i;
Uint32 TempData=0;
Uint32 Reg=0;
/********************************************************************************/
/********************************************************************************/
void main()
 {
	MCASP_Handle hMcasp;
	I2C_Handle hI2C;

	for(i=0;i<1000;i++)
	DataBuffer[i] = 0;
	/* Initialize CSL. */
	CSL_init();
	
	/* Initialize DEC6713 board. */
	DEC6713_init();
	IRQ_setVecs(vectors);     /* point to the IRQ vector table	*/
  	IRQ_globalEnable();       /* Globally enable interrupts       */ 
  	IRQ_nmiEnable();          /* Enable NMI interrupt */
//  	IRQ_map(IRQ_EVT_VINT1, 11);
//    IRQ_map(IRQ_EVT_VINT0, 12);
//    IRQ_reset(IRQ_EVT_VINT1);
//    IRQ_reset(IRQ_EVT_VINT1);
	/****************************************************************************/
	//TempReg = DEC6713_CTL_REG;
	//DEC6713_cpld_rset(TempReg,0x40);
	/****************************************************************************/
	/* Initialize I2C0. */
		/* Open I2C0. */
		hI2C = I2C_open(I2C_DEV0,I2C_OPEN_RESET);
		
		/* If i2c model clock frequency is lower, perhaps timer delay should be 
		   added between aic23 registers writting */
		/* Set all parts of AIC23 begin to work. */
		I2C_write16(hI2C,Power_Down_Control,0x00);
		//DEC6713_wait(100);
		/* Set digital interface for AIC23. */
		I2C_write16(hI2C,Digital_Audio_Interface_Format,0x53);//0x52
		//DEC6713_wait(100);
		/* Set analog channel for AIC23. */
		I2C_write16(hI2C,Analog_Audio_Path_Control,0x10);
		//DEC6713_wait(100);
		/* Set digital channel for AIC23. */
		I2C_write16(hI2C,Digital_Audio_Path_Control,0x01);
		//DEC6713_wait(100);
		/* Set sample rate for AIC23. */
		I2C_write16(hI2C,Sample_Rate_Control,0x00);
		//DEC6713_wait(100);
		/* Set volume for headphone. */
		I2C_write16(hI2C,Left_Channel_Headphone_Volume_Control,0xF9);
		//DEC6713_wait(100);
		/* Set volume for line in. */
		I2C_write16(hI2C,Left_Line_Input_Channel_Volume_Control,0x17);
		//DEC6713_wait(100);
		I2C_write16(hI2C,Right_Line_Input_Channel_Volume_Control,0x17);
		//DEC6713_wait(100);
		/* Start AIC23. */
		I2C_write16(hI2C,Digital_Interface_Activation,0x01);
		DEC6713_wait(1000);
		/* Replay the audio. */	
		hMcasp = DEC6713_AIC23_OpenCodec();
		i=0;
	while(TRUE)
	{
		// The "for loop" is for testing AXRx[x], at that time ,AXRX is set
		//	as GPIO through seting PFUNC register.
		/*
		for(;;)
		{
			MCASP_setPins(hMcasp,0X80);
			DEC6713_wait(0x1000);
			MCASP_clearPins(hMcasp,0X80);
			DEC6713_wait(0x1000);
		
		}
		*/
		/*
		if(MCASP_FGETH(hMcasp,RSTAT,RDATA))
		{
			TempData = MCASP_RGETH(hMcasp,RBUF6);
			MCASP_RSETH(hMcasp,XBUF7,TempData);
		
		}
		*/
		if (MCASP_RGETH(hMcasp, SRCTL6) & 0x20) 
		{
        	TempData = MCASP_read32Cfg(hMcasp,MCASP_RBUF6);
        	DataBuffer[i]=TempData;
        	i++;
        	if(i==1000)
        	{
        		i=0;
        	}
    	}
    
    	
    	if (MCASP_RGETH(hMcasp, SRCTL7) & 0x10) 
    	{
        	MCASP_write32Cfg(hMcasp,MCASP_XBUF7,TempData);
    	}
    	
	}
}
/********************************************************************************/
/* End of DEC6713_CODEC.C */
/********************************************************************************/