tlc5620.c

TLC0838和tlc5620产生的正弦信号

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int

sbit load_5620=P2^0;
sbit clk_5620=P2^1;
sbit data_5620=P2^2;

//sbit ldac_5620=P1^3;


//table of sin function

uchar code sin[256]=
{0x7F,0x82,0x85,0x88,0x8B,0x8F,0x92,0x95,0x98,0x9B,0x9E,0xA1,0xA4,0xA7,0xAA,0xAD
,0xB0,0xB3,0xB6,0xB8,0xBB,0xBE,0xC1,0xC3,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7
,0xD9,0xDB,0xDD,0xE0,0xE2,0xE4,0xE5,0xE7,0xE9,0xEB,0xEC,0xEE,0xEF,0xF1,0xF2,0xF4
,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFB,0xFC,0xFD,0xFD,0xFE,0xFE,0xFE,0xFE,0xFE    

,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFD,0xFD,0xFC,0xFB,0xFB,0xFA,0xF9,0xF8,0xF7,0xF6
,0xF5,0xF4,0xF2,0xF1,0xEF,0xEE,0xEC,0xEB,0xE9,0xE7,0xE5,0xE4,0xE2,0xE0,0xDD,0xDB
,0xD9,0xD7,0xD5,0xD2,0xD0,0xCD,0xCB,0xC8,0xC6,0xC3,0xC1,0xBE,0xBB,0xB8,0xB6,0xB3
,0xB0,0xAD,0xAA,0xA7,0xA4,0xA1,0x9E,0x9B,0x98,0x95,0x92,0x8F,0x8B,0x88,0x85,0x82

,0x7F,0x7C,0x79,0x76,0x73,0x6F,0x6C,0x69,0x66,0x63,0x60,0x5D,0x5A,0x57,0x54,0x51
,0x4E,0x4B,0x48,0x46,0x43,0x40,0x3D,0x3B,0x38,0x36,0x33,0x31,0x2E,0x2C,0x29,0x27
,0x25,0x23,0x21,0x1E,0x1C,0x1A,0x19,0x17,0x15,0x13,0x12,0x10,0x0F,0x0D,0x0C,0x0A
,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00

,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08
,0x09,0x0A,0x0C,0x0D,0x0F,0x10,0x12,0x13,0x15,0x17,0x19,0x1A,0x1C,0x1E,0x21,0x23
,0x25,0x27,0x29,0x2C,0x2E,0x31,0x33,0x36,0x38,0x3B,0x3D,0x40,0x43,0x46,0x48,0x4B
,0x4E,0x51,0x54,0x57,0x5A,0x5D,0x60,0x63,0x66,0x69,0x6C,0x6F,0x73,0x76,0x79,0x7C};





/********************************dac5620*************************************************/
void dac_5620(unsigned char dataa,unsigned char datab,
              unsigned char datac,unsigned char datad)
{
 unsigned char i;

 /****************dataa************/
 load_5620=1; 
 clk_5620=1; data_5620=0; clk_5620=0;
 clk_5620=1; data_5620=0; clk_5620=0;
 clk_5620=1; data_5620=1; clk_5620=0;
 for(i=0;i<8;i++)
   {
    clk_5620=1;
    if(dataa & 0x80) data_5620=1;  
       else data_5620=0;
     clk_5620=0;
    dataa=dataa<<1;
    }
 load_5620=0;
 _nop_();
 load_5620=1;

 /************datab*************/
 load_5620=1; 
 clk_5620=1; data_5620=0; clk_5620=0;
 clk_5620=1; data_5620=1; clk_5620=0;
 clk_5620=1; data_5620=1; clk_5620=0;
 for(i=0;i<8;i++)
   {
    clk_5620=1;
    if(datab & 0x80) data_5620=1;  
       else data_5620=0;
     clk_5620=0;
    datab=datab<<1;
    }
 load_5620=0;
 _nop_();
 load_5620=1;

/************datac*******************/
 load_5620=1; 
 clk_5620=1; data_5620=1; clk_5620=0;
 clk_5620=1; data_5620=0; clk_5620=0;
  clk_5620=1; data_5620=1; clk_5620=0;
 for(i=0;i<8;i++)
   {
    clk_5620=1;
    if(datac & 0x80) data_5620=1;  
       else data_5620=0;
     clk_5620=0;
    datac=datac<<1;
    }
 load_5620=0;
 _nop_();
 load_5620=1;

/***************datad***************/
 load_5620=1; 
 clk_5620=1; data_5620=1; clk_5620=0;
 clk_5620=1; data_5620=1; clk_5620=0;
 clk_5620=1; data_5620=1; clk_5620=0;
 for(i=0;i<8;i++)
   {
    clk_5620=1;
    if(datad & 0x80) data_5620=1;  
       else data_5620=0;
     clk_5620=0;
    datad=datad<<1;
    }
 load_5620=0;
 _nop_();
 load_5620=1;
 
}
/********************************************************************************************/


/********************************************main()**********************************************/
//output four sin function waves
/*************************************************************************************************/
main()
{
unsigned char i;
 while(1)
  {
    for(i=0;i<256;i++)
    dac_5620(sin[i],sin[i]/2,sin[i]/4,sin[i]/8);
  }

}