pt2322s.c

基于KEIL51的一款高性能的数字功放的完整代码

#include "config.h"


#define IN_PT2322S

#define PT2322_I2CADDRESS   0x88   // PT2322的I2C的地址 

// --------------------------------------------------------------------------------
// ------------  主音量的控制 -----------------------------------------------------
unsigned char idata  master_volume=0x00;   //主音量的值 
unsigned char idata  pt2322_buffer[5];  //I2C发送的buffer,不包含子地址,一般为2个字节而已 

/*  ------------------------------------------------------------------
FUNCTION DEFINITION
MSB LSB
B7 B6 B5 B4 B3 B2 B1 B0      Function
0 0 0 0 x  x  x  x           No function
0 0 0 1 E3 E2 E1 E0          Front left channel volume TRIM control
0 0 1 0 E3 E2 E1 E0          Front right channel volume TRIM control
0 0 1 1 E3 E2 E1 E0          Center channel volume TRIM control
0 1 0 0 E3 E2 E1 E0          Rear left channel volume TRIM control
0 1 0 1 E3 E2 E1 E0          Rear right channel volume TRIM control
0 1 1 0 E3 E2 E1 E0          Subwoofer volume TRIM control
0 1 1 1 I1 I0 J1 J0          Function select
1 0 0 0 x  x  x  x           No function
1 0 0 1 G3 G2 G1 G0          Bass tone control
1 0 1 0 K3 K2 K1 K0          Middle tone control
1 0 1 1 H3 H2 H1 H0          Treble tone control
1 1 0 0 0  C2 C1 C0          Input SW
1 1 0 1 A3 A2 A1 A0          Master volume control (-1dB Step)
1 1 1 0 0  B2 B1 B0          Master volume control (-10dB Step)

FUNCTION SELECT BITS
I1=0 Mute Off I1=1 Mute On
I0=0 3D On I0=1 3D Off
J1=0 Tone Control ON J1=1 TONE Defeat
J0=0 No Function J0=1 No Function


MASTER VOLUME CONTROL BITS	   // 主音量的调节
A3 A2(B2) A1(B1) A0(B0) Attenuation (dB)
0 0 0 0 0 (0)
0 0 0 1 -1 (-10)
0 0 1 0 -2 (-20)
0 0 1 1 -3 (-30)
0 1 0 0 -4 (-40)
0 1 0 1 -5 (-50)
0 1 1 0 -6 (-60)
0 1 1 1 -7 (-70)
1 0 0 0 -8 (x)
1 0 0 1 -9 (x)
Note: A=-1dB/Step, B=-10dB/Step
TONE CONTROL BITS	 //音调的调节
G3/K3/H3 G2/K2/H2 G1/K1/H1 G0/K0/H0 Attenuation (dB)
0 0 0 0 -14
0 0 0 1 -12
0 0 1 0 -10
0 0 1 1 -8
0 1 0 0 -6
0 1 0 1 -4
0 1 1 0 -2
0 1 1 1 0
1 0 0 0 +14
1 0 0 1 +12
1 0 1 0 +10
1 0 1 1 +8
1 1 0 0 +6
1 1 0 1 +4
1 1 1 0 +2
1 1 1 1 0
Note: G=Bass, K=Middle, H=Treble


CHANNEL TRIM VOLUME CONTROL BITS
E3 E2 E1 E0 Attenuation (dB)
0 0 0 0 0
0 0 0 1 -1
0 0 1 0 -2
0 0 1 1 -3
0 1 0 0 -4
0 1 0 1 -5
0 1 1 0 -6
0 1 1 1 -7
1 0 0 0 -8
1 0 0 1 -9
1 0 1 0 -10
1 0 1 1 -11
1 1 0 0 -12
1 1 0 1 -13
1 1 1 0 -14
1 1 1 1 -15


------------------------------------------------------------------*/


// PT2322S的初始化程序
void pt2322s_initialize(void)
{

#if  EEPROM_USING
	  eeprom_operatemode=0x01; //将要记忆的内容写入EEPROM
      eeprom_process();  //取得音量值和音乐模式 
#endif
 pt2322_buffer[0]=0xff;	 //Clear Register
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // 关于mute功能的控制 
 pt2322_buffer[0]=0xc7;	 //开放６个通道 
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // 开放６通道 

 mastervolume_control();
 musicmode_control();

 pt2322_mutecontrol(0x00);

}


// ---音量0为最大, -79DB为最小
void  mastervolume_control(void)
{unsigned char idata i=0x00;
 if(master_volume>79)
    master_volume=79;  //不容许超过音量限制 
 pt2322_buffer[0]=0xe0+(master_volume/10);
 pt2322_buffer[1]=0xd0+(master_volume%10);
 //PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x02);   //发送音量的控制 
 if(PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x02)==0x00)  //;  // 发送音量的控制 
    {//rs232_senddata(0x86);
	 //rs232_senddata(0x01);
	 }
 else
    {//rs232_senddata(0x86);
	 //rs232_senddata(0x02);
	 }


}

// --------------------------------------------------------------------------------
// ----模式的选择,通过TRIM的控制,以及3D效果的控制来实现 

unsigned char idata music_mode=0x00;  //PT2322的音响效果模式 
unsigned char idata function_mode=0x00;    //PT2322的模式选择 
#define MAX_MUSIC_MODE  0x04
unsigned char code  pt2322_trim_code[MAX_MUSIC_MODE][7]=                   
					{// Front left, Front right,Center,Rear left,Rear right,Subwoofer,3D ON/OFF
					    0x00,       0x00,       0x00,  0x00,     0x00,      0x08,     0x01,  // mode 0
					    0x00,       0x00,       0x00,  0x00,     0x00,      0x00,     0x00,  // mode 1
					    0x00,       0x00,       0x00,  0x00,     0x00,      0x08,     0x01,  // mode 2
					    0x02,       0x00,       0x00,  0x00,     0x00,      0x00,     0x01,  // mode 3
					 }; 


void  musicmode_control(void)
{

 pt2322_mutecontrol(0x00);
 if(music_mode >= MAX_MUSIC_MODE)
    music_mode = 0x00;
 if(music_mode==0x00)
    {LED1=0x00;LED2=0x01;LED3=0x01;LED4=0x01;}
 else if(music_mode==0x01)
    {LED1=0x01;LED2=0x00;LED3=0x01;LED4=0x01;}
 else if(music_mode==0x02)
    {LED1=0x01;LED2=0x01;LED3=0x00;LED4=0x01;}
 else if(music_mode==0x03)
    {LED1=0x01;LED2=0x01;LED3=0x01;LED4=0x00;}

 pt2322_buffer[0]=0x10+pt2322_trim_code[music_mode][0]&0x0f;
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // Front left channel volume TRIM control 
 pt2322_buffer[0]=0x20+pt2322_trim_code[music_mode][1]&0x0f;
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // Front right channel volume TRIM control 
 pt2322_buffer[0]=0x30+pt2322_trim_code[music_mode][2]&0x0f;
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // Center channel volume TRIM control 
 pt2322_buffer[0]=0x40+pt2322_trim_code[music_mode][3]&0x0f;
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // Rear left channel volume TRIM control 
 pt2322_buffer[0]=0x50+pt2322_trim_code[music_mode][4]&0x0f;
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // Rear right channel volume TRIM control
 pt2322_buffer[0]=0x60+pt2322_trim_code[music_mode][5]&0x0f;
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // Subwoofer volume TRIM control 

 // ------- 3D开放的问题 -------
 if(pt2322_trim_code[music_mode][5]!=0x00)
    {function_mode|=0x04;  //开放3D功能 
	 }
 else
    {function_mode=function_mode&0x0b;	//屏蔽3D功能 
	 }
 pt2322_buffer[0]=0x70+function_mode&0x0f;
 if(PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01)==0x00)  //;  // 关于3D功能的控制 
    {//rs232_senddata(0x85);
	 //rs232_senddata(0x01);
	 }
 else
    {//rs232_senddata(0x85);
	 //rs232_senddata(0x02);
	 }



}

void pt2322_mutecontrol(unsigned char mute_onoff)
{if(mute_onoff!=0x00)
    {function_mode|=0x08;  //mute on
	 MUTE_CTL=0x01;  //静音	  高为截至 
	 }
 else
    {function_mode=function_mode&0x07;	//mute off
	 MUTE_CTL=0x00;  //	 低开放音频 
	 }
 pt2322_buffer[0]=0x70+(function_mode&0x0f);
 PSendStr(PT2322_I2CADDRESS,pt2322_buffer,0x01);  // 关于mute功能的控制 
}