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接TEA5767实现收音功能程序 -_------补交啊,补交

菜鸟
2012-01-12 23:22:23    评分


#include "iic.h"
//#include "stc.h"
#include "intrins.h"
#include "tea5767.h"

 

void writeonebyte(unsigned char wrdata)
{
 unsigned char i;     //uchar i=1;
 for(i=0;i<8;i++)     //while(i)
 {         //{
  iic_scl=0;      //iic_scl=0;
  if(wrdata&0x80) iic_sda=1;  //if(wrdata&i) iic_data=1;
  else iic_sda=0;    //else iic_data=0;
  delay5us();
  iic_scl=1;
  delay5us();
  iic_scl=0;
  wrdata<<=1;      //i<<=1;
//  delay5us();
 }
}


void write_tea5767(unsigned char wraddress,unsigned char *pchar,unsigned char num)
{
 unsigned char i;
 unsigned char *intchar;
 do
 { 
  iic_start();
  writeonebyte(wraddress);
 } while(!iic_testack());
 intchar =pchar;
 for(i=0;i<num;i++)
 {
  writeonebyte(*intchar);
  iic_testack();
  intchar++;
 }
 iic_stop();

}

unsigned char readonebyte(void)
{
 unsigned char i, readvalue;
 for(i=0;i<8;i++)
 {
  
  iic_scl=0;
  readvalue<<=1;
//  delay5us();
  iic_sda=1;
  
  delay5us();
  iic_scl=1;
  delay5us();
  
  if(iic_sda) readvalue|=0x01;
  iic_scl=0;
 }
 return(readvalue);
 
}

void read_tea5767(unsigned char readaddress,unsigned char *pchar,unsigned char num)
{
 unsigned char i;
 unsigned char *intchar;
 do
 {
  iic_start();
  writeonebyte(readaddress);
 }while(!iic_testack());
 intchar =pchar;
 for(i=0;i<num;i++)
 {
  *intchar =readonebyte();
  intchar++;
  if(i==(num-1)) iic_nack();
  else iic_mack();
  
 }
 iic_stop();
}
/*
unsigned int freqtopll()
{
 unsigned int pll;
 bit hlsi;
 hlsi=send_data[2]&HLSI;
 if(hlsi)
 {pll=(unsigned int)((freq+225)>>13)*1000;}
 else
 {pll=(unsigned int)((freq-225)>>13)*1000;}
 return(pll);

}

 


void set_pll(bit hlsi,unsigned long freq,unsigned char *pchar)
{
// unsigned char highpll,lowpll;
 unsigned char *intchar =pchar;
 union pllstr
 {
  unsigned int pllvalue;
  unsigned char pllarray[2];
 }pll;
// bit hlsi;
// hlsi=*(pchar+2)&HLSI;
 if(hlsi)
 {
  pll.pllvalue=(unsigned int)((freq+200)*1000>>13); //previous 225
  *(intchar+2)|=HLSI; //HLSI
 }
 else
 {
  pll.pllvalue=(unsigned int)((freq-200)*1000>>13); //previous 225
  *(intchar+2)&=~HLSI;
 }
// return(pll);
// highpll=(unsigned char)(pll>>8);
// lowpll=(unsigned char)(pll&0xff);
 *intchar&=0xc0;
 *intchar|=(pll.pllarray[0]&0x3f);   //question
 *(intchar+1)=pll.pllarray[1];

}

 

unsigned long get_freq(bit hlsi,unsigned char *pchar)
{
 unsigned long freq;
// unsigned char highpll,lowpll;
 unsigned char *intchar =pchar;
 union pllstr
 {
  unsigned int pllvalue;
  unsigned char pllarray[2];
 }pll;
 pll.pllarray[0]=*intchar&0x3f;
 pll.pllarray[1]=*(intchar+1);
// pll=highpll<<8|lowpll;
 if(hlsi)
 freq=(unsigned long)((float)pll.pllvalue*(float)8.192)-200;  //previous 225  //question occure here
 else
 freq=(unsigned long)((float)pll.pllvalue*(float)8.192)+200;   //question occure here

 return(freq);
 
}

*/
//#include "stc12c5206.h"
#include "iic.h"
#include "intrins.h"
//#define nop() _nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_()

void delay5us(void)   //operate @24MHz, delay 5us
{
 unsigned char i =20;
 while(i--);
}

void iic_start(void)  //scl 高电平时,sda 从高往低跳
{
//  unsigned char x=20;
  iic_sda=1;
  iic_scl=1;
  delay5us();
  iic_sda=0;
  delay5us();
  iic_scl=0;
  delay5us();
}

void iic_stop(void)   //scl 高电平时,sda 从低往跳高
{
// unsigned char x=20;
 iic_sda=0;
 iic_scl=1;
 delay5us();
 iic_sda=1;
 delay5us();
}

void iic_mack(void)   //应答信号,
{
// unsigned char x=20;
 iic_sda=0;
 delay5us();
 iic_scl=1;
 delay5us();
 iic_scl=0;
}

void iic_nack(void)

// unsigned char x=20;
 iic_sda=1;
 delay5us();
 iic_scl=1;
 delay5us();
 iic_scl=0;
}

bit iic_testack(void)
{
// unsigned char x=20;
 bit flag =0;
 iic_sda=1;
 delay5us();
 iic_scl=1;
 delay5us();
 if(!iic_sda)flag=1;
 else flag=0;
 
 iic_scl=0;
 delay5us();
 return(flag);
}
/************************************************************************************
MCU TYPE: stc11f02, osc frequence: 24MHz
if used uart, baud rate is 9600 bps
note iic time delay satisfy 5 us after data pin change
*************************************************************************************/
#include "stc.h"

#include "tea5767.h"
#include "uart.h"


sbit led = P1^2; //for test

#define test
#define  USUROPE
#define keyuse 0x03
unsigned int i;
unsigned char j;
//unsigned char itest;

unsigned char keytemp;
unsigned char tempbuff;

unsigned char send_data[5]={0x33,0x27,0x08,0x3c,0x40};
unsigned char rece_data[5];

#define WRADDRESS 0XC0
#define RDADDRESS 0XC1

bit keyvalid;
bit read_enable;

void io_init(void)
{
 P1M1 = 0XFF;
 P1M0 = 0XFF;
}

void delay(void)
{
 unsigned char k=200;
 while(k--);
}

void int_serve(void) interrupt 2
{
 EX1 =0;
 PCON &=~0X02;
// return;
}

void uart_serve(void) interrupt 4
{
 ES =0;

 PCON &=~0X02;
}

 
void initfm(void)
{
 write_tea5767(WRADDRESS,&send_data,5);
}

void main(void)
{
 io_init();

 initfm();
 #ifdef test
 Init_uart();
 #endif

 while(1)
 {
  if(RI)
  {
   RI =0;
   i =0;
   tempbuff =SBUF;
   if(tempbuff ==0xEE)
   {
    for(j =0;j<5;j++)
    {
     send_data[j] =uart_rec();
    }
    write_tea5767(WRADDRESS,&send_data,5);
    delay();
    delay();
    delay();
    delay();
    read_enable =1;
    /*
    read_tea5767(RDADDRESS,&rece_data,5);
    uart_send(0xDF);
    for(j=0;j<5;j++)
    uart_send(rece_data[j]);
    */
   }

  }
  if(read_enable ==1)
  {
   read_enable =0;
      read_tea5767(RDADDRESS,&rece_data,5);
    uart_send(0xDF);
    for(j=0;j<5;j++)
    uart_send(rece_data[j]);
  }
  keytemp = P1 & keyuse;
  if(keytemp !=keyuse)
  {
   i =0;
   delay();
   if(keyvalid ==0)
   {
    keyvalid =1;
    switch(keytemp)
    {
    /*
     case 0x00:   //all press
//     if(mode ==0) mode =1;
//     else mode =0;
     break;
     */
     case 0x01:   //P1.1 press

      send_data[0]=0x33;
      send_data[1]=0x27;
      write_tea5767(WRADDRESS,&send_data,5);
      read_enable =1;
      /*
      read_tea5767(RDADDRESS,&rece_data,5);
      for(j=0;j<5;j++)
      uart_send(rece_data[j]);
      */

     break;
     case 0x02:   //P1.0 press

      send_data[0]=0x2f;
      send_data[1]=0xfd;
      write_tea5767(WRADDRESS,&send_data,5);
      read_enable =1;
      /*
      read_tea5767(RDADDRESS,&rece_data,5);
      for(j=0;j<5;j++)
      uart_send(rece_data[j]);
      */
     break;
     default:
     break;

    }
   }
//   else keyvalid =1;

  }
  else
  {
   keyvalid = 0;
   i++;
   delay();
   if(i ==20000)
   {
    
    IT1 =1;  //open INT1
    EX1 =1;
    WAKE_CLKO |=(1<<6);
    ES =1; //open serial port interrupt
    EA =1;
    PCON |=0X02;
    _nop_();
    _nop_();
    _nop_();
    _nop_();
    i =0;
    EX1 =0;
    ES =0;
    PCON &=~0X02;
    
   }
  }

 }
}

 

#include "stc.h"

void Init_uart( void )
{

//#ifdef test

 
 TMOD |= 0X20;
 TH1 = 0XF3;   //osc 24M, 4800 baud rate
 TL1 = 0XF3;
 SCON = 0X50;
 PCON=0X80;   //SMOD =1
 TR1 = 1;
//#endif

}

void uart_send( unsigned char Buf )
{
 TI = 0;
 SBUF = Buf;
 while(!TI);
 TI = 0;
}

unsigned char uart_rec(void)
{
 unsigned char temp;
 while(!RI);
 RI =0;
 temp = SBUF;
 return(temp);
}

外加几个头文件  ,不粘贴了




关键词: TEA5767     实现     收音     功能     程序     -----    

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