hal1.c

车载电子影音系统dvd播放系统原程序代码

    
#if CPU_SPEED == CPU_49M
    c = 7;                    // T~=10uS  for 49.5MHZ CPU
#endif

#if CPU_SPEED == CPU_48M
    c = 7;                    // T~=10uS  for 48MHZ CPU
#endif

#if CPU_SPEED == CPU_34M
    c = 5;                    // T~=10uS  for 33.8638MHZ CPU
#endif

#if CPU_SPEED == CPU_33M
    c = 5;                    // T~=10uS  for 33MHZ CPU
#endif

#if CPU_SPEED == CPU_40M
    c = 6;                    // T~=10uS  for 40.5MHZ CPU
#endif

#if CPU_SPEED == CPU_27M
    c = 4;                    // T~=10uS  for 40.5MHZ CPU
#endif

#if CPU_SPEED == CPU_24M       // Added by KCHung 890906
    c = 4;                    // T~=10uS  for 24MHZ CPU
#endif

#if CPU_SPEED == CPU_12M
    c = 2;                    // T~=10uS  for 40.5MHZ CPU
#endif

    while (c-- != 0);
}



//Kevin0.83, add
#if AUDIO_DAC == DAC_PCM1723_WM8746
void _ProgramAudioDAC(BYTE bSampleFreq)
{
#define PIN_CS8746  0x04    //P5^2
#define PIN_CS1723  0x08    //P5^3
#define PIN_SCK 0x10        //P5^4 
#define PIN_SDA 0x20        //P5^5

// Chuan0.83b-2, Programming PCM1723_WM8746 under IO_PCI case
#if IO == IO_PCI   
    //// PCM1723 /////
    // Step 1: get sample rate & bit resolution
    _GetSampleFreq(HAL_DAC_PCM1723, bSampleFreq);

    // Step 2: Set ACLK for audio DAC to match specify sample rate -- LLY.160a
    _ProgramDACACLKInput();

    // Step 3: set sample rate & bit resolution for specify Audio DAC 
    // Init Audio Dac1
    //__dwHAL1Temp = (PIN_CS1723|PIN_SCK|PIN_SDA); //PH cs/clk/data   
    __dwHAL1P5 |= (PIN_CS1723|PIN_CS8746|PIN_SCK|PIN_SDA); //PH cs/clk/data
    __dwHAL1P5CON |= (PIN_CS1723|PIN_CS8746|PIN_SCK|PIN_SDA); //output mode
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);
    W99AV_OutIndex(0x700000AF); //SFR P5CON
    //Kevin0.87, Slove the bo-noise when KEY_PREV/KEY_NEXT
    //always set output mode & PH 1723/8746 CS;
    //otherwise, the other CS may be unknown in input mode (circuit not pull high)
    //W99AV_OutData(PIN_CS1723|PIN_SCK|PIN_SDA);  //output mode 
    W99AV_OutData(__dwHAL1P5CON);   

    __dwHAL1P5 &= ~PIN_SCK;   //PL clock
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);    
    
    __dwHAL1P5 |= PIN_SCK;    //PH clock
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    // write Reg2 
    for (__bHAL1Tmp1=0; __bHAL1Tmp1<16; __bHAL1Tmp1++)
    {
        if ((_wSampleRate >> (15 - __bHAL1Tmp1)) & 0x01)
        {   
            __dwHAL1P5 |= PIN_SDA;    //PH data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        else
        {        
            __dwHAL1P5 &= ~PIN_SDA;   //PL data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        
        __dwHAL1P5 &= ~PIN_SCK;   //PL clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
        
        __dwHAL1P5 |= PIN_SCK;    //PH clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
    }

    // Activate 1723
    __dwHAL1P5 &= ~PIN_CS1723;    //PL cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    __dwHAL1P5 |= PIN_CS1723; //PH cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    // write Reg3 
    for (__bHAL1Tmp1=0; __bHAL1Tmp1<16; __bHAL1Tmp1++)
    {
        if ((_wBitResolution >> (15 - __bHAL1Tmp1)) & 0x01)
        {
            __dwHAL1P5 |= PIN_SDA;    //PH data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        else
        {
            __dwHAL1P5 &= ~PIN_SDA;   //PL data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        
        __dwHAL1P5 &= ~PIN_SCK;   //PL clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
        
        __dwHAL1P5 |= PIN_SCK;    //PH clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
    }

    // Activate 1723
    __dwHAL1P5 &= ~PIN_CS1723;    //PL cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    __dwHAL1P5 |= PIN_CS1723;     //PH cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    
    ///// WM8746 /////
    // Step 1: get sample rate
    _GetSampleFreq(HAL_DAC_WM8746, bSampleFreq);

    // Step 2: set sample rate
    // Init Audio Dac2
    //__dwHAL1Temp = (PIN_CS8746|PIN_SCK|PIN_SDA); //PH cs/clk/data
    __dwHAL1P5 |= (PIN_CS1723|PIN_CS8746|PIN_SCK|PIN_SDA); //PH cs/clk/data
    __dwHAL1P5CON |= (PIN_CS1723|PIN_CS8746|PIN_SCK|PIN_SDA); //output mode
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);
    W99AV_OutIndex(0x700000AF); //SFR P5CON
    //Kevin0.87, Slove the bo-noise when KEY_PREV/KEY_NEXT
    //always set output mode & PH 1723/8746 CS;
    //otherwise, the other CS may be unknown in input mode (circuit not pull high)
    //W99AV_OutData(PIN_CS8746|PIN_SCK|PIN_SDA);  //output mode
    W99AV_OutData(__dwHAL1P5CON);  

    __dwHAL1P5 &= ~PIN_SCK;   //PL clock
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);    
    
    __dwHAL1P5 |= PIN_SCK;    //PH clock
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    // write Reg0000011
    for (__bHAL1Tmp1=0; __bHAL1Tmp1<16; __bHAL1Tmp1++)
    {
        if ((_wBitResolution >> (15 - __bHAL1Tmp1)) & 0x01)
        {   
            __dwHAL1P5 |= PIN_SDA;    //PH data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        else
        {        
            __dwHAL1P5 &= ~PIN_SDA;   //PL data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        
        __dwHAL1P5 &= ~PIN_SCK;   //PL clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
        
        __dwHAL1P5 |= PIN_SCK;    //PH clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
    }

    // Activate 8746
    __dwHAL1P5 &= ~PIN_CS8746;    //PL cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    __dwHAL1P5 |= PIN_CS8746; //PH cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);


#ifdef SUPPORT_AUDIO_DEEMPHASYS         
    if (__bHAL1_Deemphasis)
    {
        _wBitResolution = 0x0522;   //use _wBitResolution as reg value to be written 
    }
    else
#endif
    _wBitResolution = 0x0520;

    // write Reg0000010
    for (__bHAL1Tmp1=0; __bHAL1Tmp1<16; __bHAL1Tmp1++)
    {
        if ((_wBitResolution >> (15 - __bHAL1Tmp1)) & 0x01)
        {   
            __dwHAL1P5 |= PIN_SDA;    //PH data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        else
        {        
            __dwHAL1P5 &= ~PIN_SDA;   //PL data
            W99AV_OutIndex(0x700000A7); //SFR P5
            W99AV_OutData(__dwHAL1P5);
        }
        
        __dwHAL1P5 &= ~PIN_SCK;   //PL clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
        
        __dwHAL1P5 |= PIN_SCK;    //PH clock
        W99AV_OutIndex(0x700000A7); //SFR P5
        W99AV_OutData(__dwHAL1P5);
    }

    // Activate 8746
    __dwHAL1P5 &= ~PIN_CS8746;    //PL cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);

    __dwHAL1P5 |= PIN_CS8746; //PH cs
    W99AV_OutIndex(0x700000A7); //SFR P5
    W99AV_OutData(__dwHAL1P5);  

#else //#if IO == IO_PCI 
    // Chuan0.83b-2, Programming PCM1723_WM8746 under IO_8051 case
    //// PCM1723 /////
    // Step 1: get sample rate & bit resolution
    _GetSampleFreq(HAL_DAC_PCM1723, bSampleFreq);

    // Step 2: Set ACLK for audio DAC to match specify sample rate -- LLY.160a
    _ProgramDACACLKInput();
    
    // Step 3: set sample rate & bit resolution for specify Audio DAC 
    //Kevin0.87, Slove the bo-noise when KEY_PREV/KEY_NEXT
    //always set output mode & PH 1723/8746 CS;
    //otherwise, the other CS may be unknown in input mode (circuit not pull high)
    //P5CON |= (PIN_CS1723|PIN_SCK|PIN_SDA);  //output mode   
    P5 |= (PIN_CS1723|PIN_CS8746|PIN_SCK|PIN_SDA);      //PH cs/clk/data
    P5CON |= (PIN_CS1723|PIN_CS8746|PIN_SCK|PIN_SDA);   //output mode
    P5 &= ~PIN_SCK;   //PL clock
    P5 |= PIN_SCK;   //PH clock    

    // write Reg2 
    for (__bHAL1Tmp1=0; __bHAL1Tmp1<16; __bHAL1Tmp1++)
    {
        if ((_wSampleRate >> (15 - __bHAL1Tmp1)) & 0x01)
        {   
            P5 |= PIN_SDA;    //PH data
        }
        else
        {        
            P5 &= ~PIN_SDA;   //PL data
        }
        P5 &= ~PIN_SCK;   //PL clock        
        P5 |= PIN_SCK;    //PH clock
    }

    // Activate 1723
    P5 &= ~PIN_CS1723;    //PL cs
    P5 |= PIN_CS1723; //PH cs
    // write Reg3 
    for (__bHAL1Tmp1=0; __bHAL1Tmp1<16; __bHAL1Tmp1++)
    {
        if ((_wBitResolution >> (15 - __bHAL1Tmp1)) & 0x01)
        {
            P5 |= PIN_SDA;    //PH data
        }
        else
        {
            P5 &= ~PIN_SDA;   //PL data
        }
        P5 &= ~PIN_SCK;   //PL clock       
        P5 |= PIN_SCK;    //PH clock
    }

    // Activate 1723
    P5 &= ~PIN_CS1723;    //PL cs
    P5 |= PIN_CS1723;     //PH cs

    ///// WM8746 /////
    // Step 1: get sample rate
    _GetSampleFreq(HAL_DAC_WM8746, bSampleFreq);

    // Step 2: set sample rate
    // Init Audio Dac2
    //Kevin0.87, Slove the bo-noise when KEY_PREV/KEY_NEXT
    //always set output mode & PH 1723/8746 CS;
    //otherwise, the other CS may be unknown in input mode (circuit not pull high)
    //P5CON |= (PIN_CS8746|PIN_SCK|PIN_SDA);  //output mode 
    //P5 |= (PIN_CS8746|PIN_SCK|PIN_SDA);  
    P5 |= (PIN_CS1723