drvsar.c

mstar 776 开发的车载dvd

////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2006-2007 MStar Semiconductor, Inc.
// All rights reserved.
//
// Unless otherwise stipulated in writing, any and all information contained
// herein regardless in any format shall remain the sole proprietary of
// MStar Semiconductor Inc. and be kept in strict confidence
// (¨MStar Confidential Information〃) by the recipient.
// Any unauthorized act including without limitation unauthorized disclosure,
// copying, use, reproduction, sale, distribution, modification, disassembling,
// reverse engineering and compiling of the contents of MStar Confidential
// Information is unlawful and strictly prohibited. MStar hereby reserves the
// rights to any and all damages, losses, costs and expenses resulting therefrom.
//
//  Description: SAR setting Module
//
///////////////////////////////////////////////////////////////////////////////
#define DRVSAR_C

#include <intrins.h>
#include <string.h>
#include "R8051XC.h"
#include "datatype.h"
#include "hwreg.h"
#include "Board.h"
#include "sysinfo.h"
#include "drvserflash_db.h"
#include "drvsys.h"
#include "Bin_ID.h"
#include "drvmiu.h"
#include "drvSAR.h"
#include "drvGlobal.h"
#include "panel.h"

#define SAR_DEBUGINFO(x) x

void drvInitialSAR(void)
{
    //SAR clock Divder
    XBYTE[0x3A13] = 0xF1;
    XBYTE[0x3A12] = 0x00;

    //test select, not used.
    XBYTE[0x3A11] = 0xF2;
    XBYTE[0x3A10] = 0x00;

    //SAR config. start/reset.
	XBYTE[REG_SAR_CTRL0] = 0xA0;
 	XBYTE[REG_SAR_CTRL1] = 0x02;

	XBYTE[REG_SAR_CTRL2] = 0x05;
	XBYTE[REG_SAR_CTRL3] = 0x00;

    //Select PIN_SAR as SAR input, Enable SAR Function
	XBYTE[REG_SAR_CTRL20] = 0xFF;
	XBYTE[REG_SAR_CTRL21] = 0x80;

    //change PIN_SAR3 as SAR3 input
    XBYTE[0x1EAF] |= 0x01;

    // Enable SAR4
    XBYTE[0x1EA4] |= 0x01;
}

/******************************************************************************/
///Keypad get ADC Channel value
///@param pkey \b IN ADC Channel
///@param pflag \b IN Pointer to the ADC Channel value
/******************************************************************************/
BOOLEAN drvSAR_Get_ADC_Channel(BYTE Channel, WORD *pvalue)
{
    U8 u8Status = 0;
    WORD i = 0;

    switch(Channel)
    {
    #if (SAR_REOLUTION_SEL == RESOLUTION_IT_10BIT)
        case SAR_ADC_CHANNEL_1:
            i = (XBYTE[REG_SAR_ADCOUT1] * 4) + (XBYTE[REG_SAR_ADCOUT1+1] & 0x03);
            *pvalue = i;
            break;
        case SAR_ADC_CHANNEL_2:
            i = (XBYTE[REG_SAR_ADCOUT2] * 4) + (XBYTE[REG_SAR_ADCOUT2+1] & 0x03);
            *pvalue = i;
            break;
        case SAR_ADC_CHANNEL_3:
            i = (XBYTE[REG_SAR_ADCOUT3] * 4) + (XBYTE[REG_SAR_ADCOUT3+1] & 0x03);
            *pvalue = i;
            break;
        case SAR_ADC_CHANNEL_4:
            i = (XBYTE[REG_SAR_ADCOUT4] * 4) + (XBYTE[REG_SAR_ADCOUT4+1] & 0x03);
            *pvalue = i;
             break;
        case SAR_ADC_CHANNEL_5:
            i = (XBYTE[REG_SAR_ADCOUT5] * 4) + (XBYTE[REG_SAR_ADCOUT5+1] & 0x03);
            *pvalue = i;
             break;
        default:
            u8Status = 1;
            *pvalue =  0x03FF;
            break;
    #else
        case SAR_ADC_CHANNEL_1:
            *pvalue = XBYTE[REG_SAR_ADCOUT1];
            break;
        case SAR_ADC_CHANNEL_2:
            *pvalue = XBYTE[REG_SAR_ADCOUT2];
            break;
        case SAR_ADC_CHANNEL_3:
            *pvalue = XBYTE[REG_SAR_ADCOUT3];
            break;
        case SAR_ADC_CHANNEL_4:
            *pvalue = XBYTE[REG_SAR_ADCOUT4];
             break;
        case SAR_ADC_CHANNEL_5:
            *pvalue = XBYTE[REG_SAR_ADCOUT5];
             break;
        default:
            u8Status = 1;
            *pvalue = 0xFF;
            break;
    #endif
    }
    return u8Status;
}