iis.c

s3c2410开发板的测试代码,包括lcd

    rIISMOD = (0<<8) + (2<<6) + (0<<5) + (0<<4) + (1<<3) + (0<<2) + (1<<0);      
//  rIISPSR = (4<<5) + 4;            //Prescaler_A/B=4 for 11.2896MHz
    rIISCON = (1<<5)+(0<<4)+(0<<3)+(1<<2)+(1<<1);
      //Tx DMA enable,Tx DMA disable,Tx not idle,Rx idle,prescaler enable,stop
    rIISFCON = (1<<15) + (1<<13);       //Tx DMA,Tx FIFO --> start piling....

    Uart_Printf("Press any key to exit!!!\n");

    rIISCON |= 0x1;                   //IIS Tx Start
    while(!Uart_GetKey());

      //IIS Tx Stop
    Delay(10);               //For end of H/W Tx
    rIISCON     = 0x0;       //IIS stop
    rDMASKTRIG2 = (1<<2);    //DMA2 stop
    rIISFCON    = 0x0;       //For FIFO flush

    size = 0;

    rGPBCON = save_B;
    rGPECON = save_E;
    rGPBUP  = save_PB;
    rGPEUP  = save_PE;

    rINTMSK = (BIT_DMA2 | BIT_EINT0);
    
    ChangeMPllValue(0xa1,0x3,0x1);              // FCLK=202.8MHz
    Uart_Init(0,115200);
    mute = 1;
}

/*
*********************************************************
* 函数介绍：本函数是初始化UDA1341。				
* 输入参数：mode---工作模式选者参数
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void Init1341(char mode)
{
    //Port Initialize
//----------------------------------------------------------
//   PORT B GROUP
//Ports  :   GPB4    GPB3   GPB2  
//Signal :  L3CLOCK L3DATA L3MODE
//Setting:   OUTPUT OUTPUT OUTPUT 
//           [9:8]   [7:6}  [5:4]
//Binary :     01  ,   01    01 
//----------------------------------------------------------    
    rGPBDAT = rGPBDAT & ~(L3M|L3C|L3D) |(L3M|L3C); //Start condition : L3M=H, L3C=H
    rGPBUP  = rGPBUP  & ~(0x7<<2) |(0x7<<2);       //The pull up function is disabled GPB[4:2] 1 1100    
    rGPBCON = rGPBCON & ~(0x3f<<4) |(0x15<<4);     //GPB[4:2]=Output(L3CLOCK):Output(L3DATA):Output(L3MODE)

      //L3 Interface
    _WrL3Addr(0x14 + 2);     //STATUS (000101xx+10)
    _WrL3Data(0x60,0);       //0,1,10, 000,0 : Status 0,Reset,256fs,IIS-bus,no DC-filtering

    _WrL3Addr(0x14 + 2);     //STATUS (000101xx+10)
    _WrL3Data(0x20,0);       //0,0,10, 000,0 : Status 0,No reset,256fs,IIS-bus,no DC-filtering
    
    _WrL3Addr(0x14 + 2);     //STATUS (000101xx+10)
    _WrL3Data(0x81,0);       //1,0,0,0, 0,0,01 
                             //Status 1,Gain of DAC 0 dB,Gain of ADC 0dB,ADC non-inverting,DAC non-inverting
                             //,Single speed playback,ADC-Off DAC-On
    
      //Record
    if(mode)
    {
        _WrL3Addr(0x14 + 2);    //STATUS (000101xx+10)
//        _WrL3Data(0xa2,0);      //1,0,1,0, 0,0,10 
                                //Status 1,Gain of DAC 0 dB,Gain of ADC 6dB,ADC non-inverting,DAC non-inverting
                                //,Single speed playback,ADC-On DAC-Off       
                                
        _WrL3Data(0xe3,0);      //1,1,1,0, 0,0,11 
                                //Status 1,Gain of DAC 6 dB,Gain of ADC 6dB,ADC non-inverting,DAC non-inverting
                                //,Single speed playback,ADC-On DAC-On                                   

//        _WrL3Addr(0x14 + 0);    //DATA0 (000101xx+00)
//        _WrL3Data(0x3f,0);      //00,11 1111  : Volume control (6 bits)  
//        _WrL3Data(0x00,0);      //00,00 0000  : Volume control (6 bits) 0dB    

        _WrL3Addr(0x14 + 0);    //DATA0 (000101xx+00)
        _WrL3Data(0x7b,0);      //01,11 10,11 : Data0, Bass Boost 18~24dB, Treble 6dB             

//        _WrL3Addr(0x14 + 0);    //DATA0 (000101xx+00)        
        _WrL3Data(0xc4,0);      //1100 0,100  : Extended addr(3bits), 100 
        _WrL3Data(0x91,0);      //100,1 00,01 : DATA0, Enable AGC, 00, input amplifier gain channel 2 (2bits)                                  

//        _WrL3Addr(0x14 + 0);    //DATA0 (000101xx+00)
        _WrL3Data(0xc2,0);      //1100 0,010  : Extended addr(3bits), 010 
//        _WrL3Data(0x4d,0);      //010,0 11,01 : DATA0, MIC Amplifier Gain 9dB, input channel 1 select(input channel 2 off) 
        _WrL3Data(0x59,0);      //010,1 10,01 : DATA0, MIC Amplifier Gain 27dB, input channel 1 select(input channel 2 off)
//        _WrL3Data(0x41,0);      //010,0 00,01 : DATA0, MIC Amplifier Gain -3dB, input channel 1 select(input channel 2 off)
    }

}

/*
*********************************************************
* 函数介绍：本函数是初始化UDA1341。				
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void ChangeDMA2(void)
{
    if(which_Buf)//双BUFFER切换，which_Buf由DMA2中断函数里变换
    {
        rDISRCC2 = (0<<1) + (0<<0);                         //AHB, Increment
        rDISRC2  = (int)(_temp + 0x30);                       //0x31000030~(Remove header)
    }
    else
    {
        rDISRCC2 = (0<<1) + (0<<0);                         //AHB, Increment
        rDISRC2  = (int)(_temp + 0x30+(size/2));              //0x31000030 + size/2~
    }
}

/*
*********************************************************
* 函数介绍：本函数是I/O口功能设置函数。				
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void IIS_PortSetting(void)
{
//----------------------------------------------------------
//   PORT B GROUP
//Ports  :   GPB4    GPB3   GPB2  
//Signal :  L3CLOCK L3DATA L3MODE
//Setting:   OUTPUT OUTPUT OUTPUT 
//           [9:8]   [7:6}  [5:4]
//Binary :     01  ,   01    01 
//----------------------------------------------------------    
    rGPBUP  = rGPBUP  & ~(0x7<<2) | (0x7<<2);   //The pull up function is disabled GPB[4:2] 1 1100    
    rGPBCON = rGPBCON & ~(0x3f<<4) | (0x15<<4); //GPB[4:2]=Output(L3CLOCK):Output(L3DATA):Output(L3MODE)

//----------------------------------------------------------
//   PORT E GROUP
//Ports  :  GPE4    GPE3   GPE2  GPE1    GPE0 
//Signal : I2SSDO  I2SSDI CDCLK I2SSCLK I2SLRCK 
//Binary :   10  ,   10     10 ,  10      10    
//----------------------------------------------------------
    rGPEUP  = rGPEUP  & ~(0x1f)  | 0x1f;    //The pull up function is disabled GPE[4:0] 1 1111
    rGPECON = rGPECON & ~(0x3ff) | 0x2aa;   //GPE[4:0]=I2SSDO:I2SSDI:CDCLK:I2SSCLK:I2SLRCK

    rGPFUP   = ((rGPFUP   & ~(1<<0)) | (1<<0));     //GPF0
    rGPFCON  = ((rGPFCON  & ~(3<<0)) | (1<<1));     //GPF0=EINT0    
    
    rEXTINT0 = ((rEXTINT0 & ~(7<<0)) | (2<<0));     //EINT0=falling edge triggered  
}

/*
*********************************************************
* 函数介绍：本函数是向1341写地址数据。				
* 输入参数：data--地址数据
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void _WrL3Addr(U8 data)
{       
    S32 i,j;

    rGPBDAT  = rGPBDAT & ~(L3D | L3M | L3C) | L3C;      //L3D=L, L3M=L(in address mode), L3C=H

    for(j=0;j<4;j++);                   //tsu(L3) > 190ns

      //GPB[4:2]=L3C:L3D:L3M
    for(i=0;i<8;i++)                    //LSB first
    {
        if(data & 0x1)                  //If data's LSB is 'H'
        {
            rGPBDAT &= ~L3C;            //L3C=L
            rGPBDAT |= L3D;             //L3D=H             
            for(j=0;j<4;j++);           //tcy(L3) > 500ns
            rGPBDAT |= L3C;             //L3C=H
            rGPBDAT |= L3D;             //L3D=H
            for(j=0;j<4;j++);           //tcy(L3) > 500ns
        }
        else                            //If data's LSB is 'L'
        {
            rGPBDAT &= ~L3C;            //L3C=L
            rGPBDAT &= ~L3D;            //L3D=L
            for(j=0;j<4;j++);           //tcy(L3) > 500ns
            rGPBDAT |= L3C;             //L3C=H
            rGPBDAT &= ~L3D;            //L3D=L
            for(j=0;j<4;j++);           //tcy(L3) > 500ns            
        }
        data >>= 1;
    }
    rGPBDAT  = rGPBDAT & ~(L3D | L3M | L3C) | (L3C | L3M);       //L3M=H,L3C=H   
}

/*
*********************************************************
* 函数介绍：本函数是向1341写数据。				
* 输入参数：data--数据
*           halt--停止参数
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void _WrL3Data(U8 data,int halt)
{
    S32 i,j;

    if(halt)
    {
        rGPBDAT  = rGPBDAT & ~(L3D | L3M | L3C) | L3C;   //L3C=H(while tstp, L3 interface halt condition)        
        for(j=0;j<4;j++);                                //tstp(L3) > 190ns
    }

    rGPBDAT  = rGPBDAT & ~(L3D | L3M | L3C) | (L3C | L3M);   //L3M=H(in data transfer mode)        
    for(j=0;j<4;j++);                                        //tsu(L3)D > 190ns

      //GPB[4:2]=L3C:L3D:L3M
    for(i=0;i<8;i++)
    {
        if(data & 0x1)                   //if data's LSB is 'H'
        {
           rGPBDAT &= ~L3C;              //L3C=L
           rGPBDAT |= L3D;               //L3D=H
           for(j=0;j<4;j++);             //tcy(L3) > 500ns
           rGPBDAT |= (L3C | L3D);       //L3C=H,L3D=H
           for(j=0;j<4;j++);             //tcy(L3) > 500ns
        }
        else                             //If data's LSB is 'L'
        {
           rGPBDAT &= ~L3C;              //L3C=L
           rGPBDAT &= ~L3D;              //L3D=L
           for(j=0;j<4;j++);             //tcy(L3) > 500ns
           rGPBDAT |= L3C;               //L3C=H
           rGPBDAT &= ~L3D;              //L3D=L
           for(j=0;j<4;j++);             //tcy(L3) > 500ns
        }
        data >>= 1;                      //For check next bit
    }
    rGPBDAT  = rGPBDAT & ~(L3D | L3M | L3C) | (L3C | L3M);    //L3M=H,L3C=H
}

/*
*********************************************************
* 函数介绍：本函数是DMA2中断处理函数。				
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void __irq DMA2_Done(void)
{
    ClearPending(BIT_DMA2);     //Clear pending bit

    WrUTXH0('@');
    if(!which_Buf)
        which_Buf = 1;
    else
        which_Buf = 0;
}

/*
*********************************************************
* 函数介绍：本函数是DMA2接收中断处理函数。				
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void __irq DMA2_Rec_Done(void)
{
    ClearPending(BIT_DMA2);     //Clear pending bit
    Rec_Done = 1;
}

/*
*********************************************************
* 函数介绍：本函数是串口接收中断处理函数。				
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void __irq RxInt(void)
{
    rSUBSRCPND = BIT_SUB_RXD0;          //Clear pending bit (Requested)
    ClearPending(BIT_UART0);

    *_temp ++= RdURXH0(); 
}

/*
*********************************************************
* 函数介绍：本函数是外部中断0处理函数，用于控制1341的开或关。				
* 输入参数：无
* 输出参数：无
* 返回值  ：无
*********************************************************
*/
void __irq Muting(void)
{
    ClearPending(BIT_EINT0);            //Clear pending bit

    if(mute)    //Mute
    {
        _WrL3Addr(0x14 + 0);            //DATA0 (000101xx+00)
        _WrL3Data(0xa4,0);              //10,1,00,1,00 : after, no de-emp, mute, flat 
        mute = 0;
        Uart_Printf("= Mute =\n");
    }
    else        //No mute
    {
        _WrL3Addr(0x14 + 0);            //DATA0 (000101xx+00)
        _WrL3Data(0xa0,0);              //10,1,00,0,00 : after, no de-emp, no mute, flat 
        mute = 1;
        Uart_Printf("= No Mute =\n");
    }
}