/*tea5767完整程序*/
#include <reg52.h>
#include <intrins.h>
#define max_freq 108000 //108Mhz
#define min_freq 87500 //87.5Mhz
#define max_pll 0x339b //108MHz时的pll.
#define min_pll 0x299d //87.5MHz时的pll.
#define Add_Freq 1
#define Dec_Freq 0
#define REFERENCE_FREQ 32.768
#define ATIIcxxDriverAddressW 0xC0
#define ATIIcxxDriverAddressR 0xC1
#define _Nop() _nop_(),_nop_(),_nop_(),_nop_(),_nop_() /*定义空指令*/
#define LED P0
void Initialization(void);
void Get_Pll(void);
void Get_Frequency(void);
void Search(unsigned char mode);
void Auto_Search(unsigned char mode);
unsigned char GetKey();
void Delay(unsigned char Time);
void Led_Display(unsigned long i);
void DelayD(unsigned char Time);
unsigned char GetKey();
void Delay(unsigned char Time);
void ATIICxx_PWrite(unsigned char *McuAddress,unsigned char count);
void ATIICxx_PRead(unsigned char *McuAddress,unsigned char count);
void I2C_Send_Byte(unsigned char sendbyte);
unsigned char I2C_Receive_Byte(void);
void I2C_Start(void);
void I2C_Stop(void);
void I2C_Ack(void);
void I2C_Noack(void);
/*********************************************************************/
/* IIC读写程序芯片型号*/
sbit I2C_SCK=P3^4; /*实时时钟时钟线引脚 */
sbit I2C_SDA=P3^5; /*实时时钟数据线引脚 */
sbit k1=P3^0;
sbit k2=P3^1;
sbit k3=P3^2;
sbit k4=P3^3;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
//unsigned char tab[]={ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//共阳0, 1, 2 3 4 5 6 7 8 9/
unsigned char tab[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x80};//共阴0, 1, 2 3 4 5 6 7 8 9/
unsigned char radio_write_data[5]={0x2d,0x56,0x20,0x11,0x00}; //初始化写入TEA5767的数据(FM89.8Mhz)
unsigned char radio_read_data[5];
unsigned int Pll_Data;
unsigned long Frequency_Data;
/***********************************************************************************/
void Initialization(void)
{
TMOD = 0x11;
TH0 = 0x5d;
TL0 = 0x3d;
TR0 = 0; //25ms
TH1 = 0x5d;
TL1 = 0x3d;
TR1 = 0; //25ms
T2CON = 0x30;
RCAP2H = 0xFE;
TH2 = RCAP2H;
RCAP2L = 0xFB;
TL2 = RCAP2L;
TR2 = 0; //2400bps
PCON = 0x00;
SCON = 0xD0;
IP = 0x14;
EX0 = 1;
IT0 = 1;
ET0 = 1;
EX1 = 1;
IT1 = 1;
ES = 0;
EA = 0;
}
/***********************************************************************************/
//读TEA5767状态,并转换成频率
void Radio_Read(void)
{
unsigned char temp_l,temp_h;
Pll_Data = 0;
ATIICxx_PRead(&radio_read_data[0],5);
temp_l = radio_read_data[1];
temp_h = radio_read_data[0];
temp_h &= 0x3f;
Pll_Data = temp_h*256+temp_l;
Get_Frequency();
}
/***********************************************************************************/
//由PLL计算频率
void Get_Frequency(void)
{
unsigned char hlsi;
unsigned int npll = 0;
npll = Pll_Data;
hlsi = radio_read_data[2]&0x10;
if (hlsi)
Frequency_Data = (unsigned long)((float)(npll)*(float)REFERENCE_FREQ*(float)0.25-225); //频率单位:KHz
else
Frequency_Data = (unsigned long)((float)(npll)*(float)REFERENCE_FREQ*(float)0.25+225); //频率单位:KHz
}
/***********************************************************************************/
//由频率计算PLL
void Get_Pll(void)
{
unsigned char hlsi;
hlsi = radio_read_data[2]&0x10;
if (hlsi)
Pll_Data = (unsigned int)((float)((Frequency_Data+225)*4)/(float)REFERENCE_FREQ); //频率单位:k
else
Pll_Data = (unsigned int)((float)((Frequency_Data-225)*4)/(float)REFERENCE_FREQ); //频率单位:k
}
/***********************************************************************************/
//手动设置频率,mode=1,+0.1MHz; mode="0:-0".1MHz ,不用考虑TEA5767用于搜台的相关位:SM,SUD
void Search(unsigned char mode)
{
Radio_Read();
if(mode)
{
Frequency_Data += 100;
if(Frequency_Data > max_freq)
Frequency_Data = min_freq;
}
else
{
Frequency_Data -= 100;
if(Frequency_Data < min_freq)
Frequency_Data = max_freq;
}
Get_Pll();
radio_write_data[0] = Pll_Data/256;
radio_write_data[1] = Pll_Data%256;
radio_write_data[2] = 0x41;
radio_write_data[3] = 0x11;
radio_write_data[4] = 0x40;
ATIICxx_PWrite(&radio_write_data[0],5);
}
/***********************************************************************************/
//自动搜台,mode=1,频率增加搜台; mode="0:频率减小搜台".
void Auto_Search(unsigned char mode)
{
Radio_Read();
Get_Pll();
if(mode)
{
radio_write_data[2] = 0xb1;
if(Pll_Data > max_pll)
{
Pll_Data = min_pll;
}
}
else
{
radio_write_data[2] = 0x41;
if(Pll_Data < min_pll)
{
Pll_Data = max_pll;
}
}
radio_write_data[0] = Pll_Data/256+0x40;
radio_write_data[1] = Pll_Data%256;
radio_write_data[3] = 0x11;
radio_write_data[4] = 0x40;
ATIICxx_PWrite(&radio_write_data[0],5);
Radio_Read();
while(!(radio_read_data[0]&0x80)) //RF电台就绪标志
{
Radio_Read();
}
}
/***********************************************************************************/
void main(void)
{
//0x2d,0x56,0x20,0x11,0x00
unsigned long temp;
Initialization();
radio_write_data[0] =0x2A;
radio_write_data[1] =0xB6;
radio_write_data[2] =0x41;
radio_write_data[3] =0x11;
radio_write_data[4] =0x40;
ATIICxx_PWrite(&radio_write_data[0],5);//初始化TEA5767(89.8Mhz)
Frequency_Data = 101900;
while(1)
{ temp= Frequency_Data;
Led_Display(Frequency_Data);
if( k1 == 0)
{
DelayD(2);
while(k1 == 0);//等待键松开
Search(Add_Freq);
}
if( k2 == 0)
{
DelayD(2);
while(k2 == 0);//等待键松开
Search(Dec_Freq);
}
if( k3 == 0)
{
DelayD(2);
while(k3 == 0);//等待键松开
Auto_Search(Add_Freq);
}
if( k4 == 0)
{
DelayD(2);
while(k4 == 0);//等待键松开
Auto_Search(Dec_Freq);
}
}
}
/*********************************************************************/
struct bytedata_2
{
unsigned char ByteH;
unsigned char ByteL;
};
union int2byte
{
unsigned int IntData;
struct bytedata_2 ByteData;
};
/*********************************************************************/
//启动I2C总线,退出时SCL为低
void I2C_Start(void)
{
I2C_SDA=1; /*发送起始条件的数据信号*/
_Nop();
I2C_SCK=1;
_Nop();_Nop();_Nop();_Nop();_Nop();/*起始条件建立时间大于4.7us,延时*/
I2C_SDA=0; /*发送起始信号*/
_Nop();_Nop();_Nop();_Nop();_Nop(); /* 起始条件锁定时间大于4μs*/
I2C_SCK=0; /*钳住I2C总线，准备发送或接收数据 */
_Nop();_Nop();_Nop();_Nop();_Nop();/*起始条件建立时间大于4.7us,延时*/
}
//*停止I2C总线
void I2C_Stop(void)
{
I2C_SCK=0;
I2C_SDA=0; /*发送结束条件的数据信号*/
_Nop(); /*发送结束条件的时钟信号*/
I2C_SCK=1; /*结束条件建立时间大于4μs*/
_Nop();_Nop();_Nop();_Nop();_Nop();
I2C_SDA=1; /*发送I2C总线结束信号*/
}
//MCU等待应答位(返回0表示应答)
bit I2C_WaitAck(void)
{
unsigned char ucErrTime = 200; //因故障接收方无ACK，超时值。
I2C_SCK=0;
I2C_SDA=1;
_Nop();
I2C_SCK=1;
while(I2C_SDA)
{
ucErrTime--;
if (ucErrTime == 0)
{
I2C_Stop();
return 0;
}
}
I2C_SCK=0;
return 1;
}
//MCU应答信号
void I2C_Ack(void)
{
I2C_SCK=0;
I2C_SDA=0;
_Nop();
_Nop();
_Nop();
_Nop();
_Nop();
I2C_SCK=1;
_Nop();
_Nop();
_Nop();
_Nop();
_Nop();
I2C_SCK=0;
}
//MCU发送非应答信号
void I2C_Noack(void)
{
I2C_SCK=0;
I2C_SDA=1;
_Nop();
_Nop();
I2C_SCK=1;
_Nop();
_Nop();
I2C_SCK=0;
}
void I2C_Send_Byte(unsigned char sendbyte)
{
unsigned char i = 8;
while( i-- )
{
I2C_SCK = 0;
_Nop(); //_Nop();
if ( sendbyte &0x80 ) I2C_SDA =1;
else I2C_SDA =0;
_Nop(); //_Nop();
I2C_SCK = 1;
_Nop(); //_Nop();
sendbyte <<= 1;
}
I2C_WaitAck();
}
static unsigned char I2C_Receive_Byte(void)
{
unsigned char i = 8, data_buffer;
I2C_SDA = 1;
while ( i--)
{
I2C_SCK =0;
_Nop();_Nop();
I2C_SCK =1;
_Nop();_Nop();
data_buffer <<= 1;
if ( I2C_SDA ) data_buffer++;
}
return (data_buffer);
}
void ATIICxx_PWrite(unsigned char *McuAddress,unsigned char count)
{
I2C_Start();
I2C_Send_Byte( ATIIcxxDriverAddressW );
while(count--)
{
I2C_Send_Byte( *(unsigned char*)McuAddress );
((unsigned char*)McuAddress)++;
}
I2C_Stop();
}
void ATIICxx_PRead(unsigned char *McuAddress,unsigned char count)
{
I2C_Start();
I2C_Send_Byte( ATIIcxxDriverAddressR );
while(count--)
{
*McuAddress = I2C_Receive_Byte();
I2C_Ack();
McuAddress++;
}
I2C_Noack();
I2C_Stop();
}
void DelayD(unsigned char Time)
{
unsigned char i;
while( --Time != 0)
{
for(i = 0; i < 125; i++); //i 从0加到125，CPU大概就耗时1 毫秒 。
}
}
/************************************************************************/
void Led_Display(unsigned long i) //显示函数
{
LED = tab[i/100000]; //千位
LSA = 1;
LSB = 1;
LSC = 0;
DelayD(3);
LED = tab[(i%100000)/10000]; //百位
LSA = 0;
LSB = 1;
LSC = 0;
DelayD(3);
LED = tab[((i%100000)%10000)/1000]|0x80; //十位
LSA = 1;
LSB = 0;
LSC = 0;
DelayD(3);
LED = tab[(((i%100000)%10000)%1000)/100]; //个位
LSA = 0;
LSB = 0;
LSC = 0;
DelayD(3);
}
//sbit LSA=P2^2;
//sbit LSB=P2^3;
//sbit LSC=P2^4;
// 000 打开第0位
// 100 打开第1位
// 010 打开第2位
// 110 打开第3位
// 001 打开第4位
// 101 打开第5位
// 011 打开第6位
// 111 打开第7位
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