codec.c

6713音频的代码

 
//TDS6713EVM_AIC23_CEDEC.C	-CODEC appled functions
#include <csl.h>
#include <csl_i2c.h>
#include <csl_mcasp.h>
#include <TDS6713EVM.h>
#include <codec.h>


//Configure MCASP
	MCASP_ConfigGbl MyMCASPcfgGbl = {
		0x00000000, // PFUNC  -  All pins as McASP
    	0x00000080, // PDIR   -  XMT DATA output, rest are inputs
    	0x00000000, // DITCTL -  DIT mode disable 
    	0x00000000, // DLBCTL -  Loopback disabled 
    	0x00000000  // AMUTE  -  Never drive AMUTE 
	};
	
//Set receive registers.
	MCASP_ConfigRcv MyMCASPcfgRcv = {
		0xffffffff, // RMASK -     Use all 32 bits 
    	0x000180f8, // RFMT -      MSB first, 32-bit slots, cfg, 16word ,1 bit delay 
    	0x00000111, // AFSRCTL -   0x0: burst, single bit frame sync, ext FS 
    	0x00000000, // ACLKRCTL -  Sample on rising CLK, divide by 1, ext CLK 
    	0x00000000, // AHCLKRCTL - External HCLK 
    	0x00000003, // RTDM -      Slots 0-31 are active
    	0x00000000, // RINTCTL -   No interrupts 
    	0x00000000  // RCLKCHK -   Not used
	};
	
//Set serial control.
	MCASP_ConfigSrctl MyMCASPcfgSrctl = {
		0x00000000, // SRCTL0 -    Inactive 
    	0x00000000, // SRCTL1 -    Inactive 
    	0x00000000, // SRCTL2 -    Inactive 
    	0x00000000, // SRCTL3 -    Inactive 
    	0x00000000, // SRCTL4 -    Inactive 
    	0x00000000, // SRCTL5 -    Inactive 
    	0x0000000E, // SRCTL6 -    Receive, active high 
    	0x0000000d  // SRCTL7 -    Transmit, active high 
	};
	
//Set transmit registers.
	MCASP_ConfigXmt MyMCASPcfgXmt = {
  		0xffffffff, // XMASK -     Use all 32 bits   0xffffffff 
    	0x000180f8, // XFMT -      MSB first, 32-bit slots, 16word, 1 bit delay ,cfg#########ok
    	0x00000111, // AFSXCTL -   2 slot, single word frame sync, ext FS ########ok
    	0x000000C0, // ACLKXCTL -  Sample on falling CLK, divide by 1, ext CLK  #########ok
    	0x00000000, // AHCLKXCTL - External HCLK ###########OK
    	0x00000003, // XTDM -      Slots 0-31 are active0x00000001
    	0x00000000, // XINTCTL -   No interrupts 
    	0x00000000  // XCLKCHK -   Not used 
	};
	MCASP_Config MyMCASPConfig = {
		&MyMCASPcfgGbl,
		&MyMCASPcfgRcv,
		&MyMCASPcfgXmt,
		&MyMCASPcfgSrctl,
	};


MCASP_Handle TDS6713EVM_AIC23_OpenCodec()
{
	MCASP_Handle TDS6713EVM_AIC23_DATAHANDLE;
	Uint32 gblctl;
//	Uint32 RegAddr;

// MCASP_Handle TDS6713EVME_AIC23_DATAHANDLE		
	TDS6713EVM_AIC23_DATAHANDLE = MCASP_open(MCASP_DEV0,MCASP_OPEN_RESET);
	
// Reset MCASP to default values by setting GBLCTL = 0
	MCASP_reset(TDS6713EVM_AIC23_DATAHANDLE);
    while(MCASP_getGblctl(TDS6713EVM_AIC23_DATAHANDLE,MCASP_XMTRCV)!=0x0);
    	
	MCASP_config(TDS6713EVM_AIC23_DATAHANDLE,&MyMCASPConfig);
	
// Clear transmit and receive status ,清除发送与接收状态
	MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE,XSTAT,0xFFFF);
	MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE,RSTAT,0xFFFF);
	
	gblctl = 0;
    MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE, GBLCTL, gblctl);
    while(MCASP_getGblctl(TDS6713EVM_AIC23_DATAHANDLE,MCASP_XMTRCV)!=0x0);
    
    gblctl = 0x404;
//使能发送与接收的串行寄存器
    MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE, GBLCTL, 0x404);
    while(MCASP_getGblctl(TDS6713EVM_AIC23_DATAHANDLE,MCASP_XMTRCV)!=0x404);        
	
// Enable transmit/receive state machines
    MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE, XBUF7, 0);
    gblctl = 0x0c0c;
    MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE, GBLCTL, gblctl);
    while(MCASP_getGblctl(TDS6713EVM_AIC23_DATAHANDLE,MCASP_XMTRCV)!=0x0c0c);

    gblctl = 0x1c1c;
    MCASP_RSETH(TDS6713EVM_AIC23_DATAHANDLE, GBLCTL, gblctl);
    while(MCASP_getGblctl(TDS6713EVM_AIC23_DATAHANDLE,MCASP_XMTRCV)!=0x1c1c);

	return(TDS6713EVM_AIC23_DATAHANDLE);
}


void TDS6713EVM_AIC23_CloseCodec(MCASP_Handle HMcASP)
{
	MCASP_close(HMcASP);
}