msddc2bi.c

主要用于液晶电视解码,内置51单片机,全部代码用C编写,编译环境为KEILC

#define _DDC2BI_C_
#include "board.h"
#include "types.h"
#include "ms_reg.h"
#include "global.h"
#include "ms_rwreg.h"
#include "DEBUG.h"
#include "misc.h"
#include "msddc2bi.h"
#include "menu.h"
#include "keypaddef.h"

#if ENABLE_DDC2BI

void msDDC2BIInit(void)
{
    BYTE ucBank;
    ucBank = msReadByte( BK0_00_REGBK);

    msWriteByte(BK0_00_REGBK, REG_BANK_SCALER);

    msWriteByte(BK0_1B_INTENB, 0xc0);		// Enable Scaler interrupt (datr & datw)
    msWriteByte(BK0_1D_INTENC, 0x01);		// Enable Scaler interrupt (star & stop)
    msWriteByte(BK0_1A_INTSTB, 0x00);
    msWriteByte(BK0_1C_INTSTC, 0x00);

    msWriteByte(BK0_00_REGBK, ucBank);

    MCUXFR_19_DDC2BI_ID = 0x80 + (0x6E>>1);		// Set SI2C slave address 0x6E , bit7:Enable SI2C
    MCUXFR_18_DDC2BI_CTRL = 0x00;			// Enable SI2C no_ack
    MCUXFR_11_DDC2BI_FLAG = 0x00;				// Clear all interrupt flag
    MCUXFR_10_DDC2BI_INT_EN = 0x3E;				// Enable SI2C interrupt

    g_bDDC2BICommandFlag = 0;
    g_ucDDC2BIBuffIndex = 0;
    SI2CHKSUMValue=0;
}



void msDDC2BICommandHandler(void )
{
    if(g_bDDC2BICommandFlag)
    {
        g_bDDC2BICommandFlag= 0;

        if((SI2CCOMM+SI2CDATA)==SI2CHKSUM)
        {
            		SI2CHKSUMValue=SI2CREADDATAOK;
			MCUXFR_13_DDC2BI_R_BUF=SI2CHKSUMValue;
        }
        else
        {
           		 SI2CHKSUMValue=SI2CREADDATANG;
			MCUXFR_13_DDC2BI_R_BUF=SI2CHKSUMValue;	
            		return;
        }

        switch(SI2CCOMM)
        {
            case SI2CKEYCOMM:
    		{
    		    switch(SI2CDATA)
    		    {
    		        case SI2CSOURCE:
                        MenuProcessKey(MIA_Source);
                        break;

                    case SI2CUP:
                    case SI2CDOWN:
                    case SI2CLEFT:
                    case SI2CRIGHT:
                    default:			
                        break;

    		    }
                break;
    	    }

            case SI2CBRIGHTNESS:
            case SI2CCONTRAST:
            case SI2CSATURATION:
            case SI2CVCOMDC:
            case SI2CVCOMAC:
            default:		
                break;
        }
    }
}

#endif