iic.h

TMS32VC5402+aAIC23立体声语音控制采集处理程序

//GuangZhou University  LJJ
//#define GPIOSR		*(volatile unsigned int*)0x3C
//#define GPIOCR		*(volatile unsigned int*)0X3D
#define SET_SCLK	GPIOSR=GPIOSR | 0X0002	//SCLK=1;
#define RES_SCLK	GPIOSR=GPIOSR & 0X0FFFD	//SCLK=0;
#define SET_SDI		GPIOSR=GPIOSR | 0X0001	//SDI=1;
#define RES_SDI		GPIOSR=GPIOSR & 0X0FFFE
	//SDI=0;
#define TH		2	//单位us
unsigned int ERROR_occure;



DELAY_us(unsigned int value)
{unsigned int i,k;
k=value*DSP_WORKING_FREQUENCY;
for(i=1;i<k;i++);//delay
}


SEND_IIC(unsigned int ADDR,unsigned int REG_ADDR,unsigned int REG_DATA)//IIC控制
{
unsigned int ERROR_occure=0;
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
GPIOCR=GPIOCR | 0X0003;//HD0,HD1  OUTPUT
//---------------------------START
DELAY_us(TH);
SET_SCLK;
RES_SDI;
DELAY_us(2*TH);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------A
RES_SCLK;
if(ADDR & 0x40/*1000000b*/) SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B
RES_SCLK;
if(ADDR & 0x20/*0100000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------C
RES_SCLK;
if(ADDR & 0x10/*0010000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------D
RES_SCLK;
if(ADDR & 0x8/*0001000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------E
RES_SCLK;
if(ADDR & 0x4/*0000100b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------F
RES_SCLK;
if(ADDR & 0x2/*0000010b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------G
RES_SCLK;
if(ADDR & 0x1/*0000001b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------R/W
RES_SCLK;
RES_SDI;	// 	R/W=0
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------ACK
RES_SCLK;
RES_SDI;
//GPIOCR=GPIOCR | 0XFFFE;//SDI  INPUT
DELAY_us(TH);
SET_SCLK;
//if(GPIOSR & 0x1) ERROR_occure++;
//if(bio) ERROR_occure++;
asm("LOOP1	BC	LOOP2,BIO");
asm("		B	LOOP3");
asm("LOOP2	STM	#01h,_ERROR_occure");
asm("LOOP3	NOP");

DELAY_us(TH);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------B15
RES_SCLK;
if(REG_ADDR & 0x40/*1000000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B14
RES_SCLK;
if(REG_ADDR & 0x20/*0100000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B13
RES_SCLK;
if(REG_ADDR & 0x10/*0010000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B12
RES_SCLK;
if(REG_ADDR & 0x8/*0001000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B11
RES_SCLK;
if(REG_ADDR & 0x4/*0000100b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B10
RES_SCLK;
if(REG_ADDR & 0x2/*0000010b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B9
RES_SCLK;
if(REG_ADDR & 0x1/*0000001b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B8-------DATA
RES_SCLK;
if(REG_DATA & 0x100/*100000000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------ACK
RES_SCLK;
RES_SDI;
//GPIOCR=GPIOCR | 0XFFFE;//SDI  INPUT
DELAY_us(TH);
SET_SCLK;//三态输出
//if(GPIOSR & 0x1) ERROR_occure++;
//if(bio) ERROR_occure++;
asm("LOOP4	BC	LOOP5,BIO");
asm("		B	LOOP6");
asm("LOOP5	STM	#01h,_ERROR_occure");
asm("LOOP6	NOP");
DELAY_us(TH);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------B7
RES_SCLK;
if(REG_DATA & 0x80/*010000000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B6
RES_SCLK;
if(REG_DATA & 0x40/*001000000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B5
RES_SCLK;
if(REG_DATA & 0x20/*000100000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B4
RES_SCLK;
if(REG_DATA & 0x10/*000010000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B3
RES_SCLK;
if(REG_DATA & 0x8/*000001000b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B2
RES_SCLK;
if(REG_DATA & 0x4/*000000100b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B1
RES_SCLK;
if(REG_DATA & 0x2/*000000010b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------B0
RES_SCLK;
if(REG_DATA & 0x1/*000000001b*/)SET_SDI;else RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
//---------------------------ACK
RES_SCLK;
RES_SDI;
//GPIOCR=GPIOCR | 0XFFFE;//SDI  INPUT
DELAY_us(TH);
SET_SCLK;
//if(GPIOSR & 0x1) ERROR_occure++;
//if(bio) ERROR_occure++;
asm("LOOP7	BC	LOOP8,BIO");
asm("		B	LOOP9");
asm("LOOP8	STM	#01h,_ERROR_occure");
asm("LOOP9	NOP");
DELAY_us(TH);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------STOP
RES_SCLK;
RES_SDI;
DELAY_us(TH);
SET_SCLK;
DELAY_us(TH);
SET_SDI;
DELAY_us(2*TH);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DELAY_us(2*TH);//额外延迟
return ERROR_occure;
}
//GuangZhou University  LJJ