#include "lt68xx.h" 
#include "spi.h"

#define WRITE 0
#define READ  1



//----------------------------------------------------------------------------
void LT_Readreg(unsigned char reg,unsigned char *RegH,unsigned char *RegL )
{  
    CS_LOW();
    spiReadWrite(READ | reg);
    *RegH = spiReadWrite(0x00);  
    *RegL = spiReadWrite(0x00);
	CS_HIGH();
}

//----------------------------------------------------------------------------
void LT_WriteReg(unsigned char reg, unsigned char RegH, unsigned char RegL)
{
    CS_LOW();
    spiReadWrite(WRITE & reg);
    spiReadWrite(RegH);
    spiReadWrite(RegL);
	CS_HIGH();
}

void LT_WriteBuf(unsigned char reg, unsigned char *pBuf, unsigned char len)
{
    unsigned char i;

    CS_LOW();
    spiReadWrite(reg); 	//Read MSB.7=0;
    spiReadWrite(len);	//Lenth
    for(i=0; i<len; i++)
        spiReadWrite(pBuf[i]);


	CS_HIGH();
}

unsigned char LT_ReadBuf(unsigned char reg, unsigned char *pBuf)
{
    unsigned char i,len;

    CS_LOW();
    spiReadWrite(reg|0X80); 	//Read MSB.7=0;
    len=spiReadWrite(0x00);
    if(len>63)
        len=63;
    for(i=0; i<len; i++)
    {
        pBuf[i] = spiReadWrite(0x00);
    }

	CS_HIGH();

    return len;
}