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//從X5045讀入單字節(jié)數(shù)據(jù)
//輸入：address,待讀數(shù)據(jù)地址
//返回：讀出的數(shù)據(jù)
unsigned char RdB5045(unsigned char address)
{
        unsigned char data x;
        B_SCLK5045=0;
        B_CS5045=0;
        byteout(0x3);  //read 000h
        byteout(address);
        x=bytein();
        B_SCLK5045=0;
        B_CS5045=1;
        return (x);
}

//向X5045輸出單字節(jié)
void byteout(unsigned char x)
{
    unsigned char data i,j;
    j=128;
    for(i=0;i<8;i++)
    {
        B_SCLK5045=0;
        B_SI5045=x/j;
        B_SCLK5045=1;
        x%=j;
        j/=2;
    }
    B_SI5045=0;
}

//等待X5045結(jié)束內(nèi)部寫(xiě)周期
void wip_chk()
{
    unsigned char data dat;
    tcX5045=0;
 do
    {
        dat=rdsr();
        dat&=0x1;
        if(tcX5045>=5) break;
    }
    while(dat);
}

//5045狀態(tài)寄存器讀出程序
unsigned char rdsr()
{
    unsigned char data dat;
 B_SCLK5045=0;
    B_CS5045=0;
    byteout(5);
 dat=bytein();
 B_SCLK5045=0;
 B_CS5045=1;
 return (dat);
}

//從X5045讀出一字節(jié)數(shù)據(jù)
unsigned char bytein()
{
    unsigned char data i,x;
    x=0;
    for (i=0;i<8;i++)
    {
        B_SO5045=1;
        B_SCLK5045=1;
        B_SCLK5045=0;
        if (B_SO5045) x=x+x+1;
        else x<<=1;
    }
    return(x);
}

//5045狀態(tài)寄存器寫(xiě)入程序
void wrsr(unsigned char x)
{
    wren();
 B_SCLK5045=0;
 B_CS5045=0;
 byteout(1);   //wrsr
 byteout(x);
 B_SCLK5045=0;
 B_CS5045=1;
 wip_chk();
    wrdi();
}

//寫(xiě)允許
void wren()
{
 B_SCLK5045=0;
 B_CS5045=0;
 byteout(6);
 B_SCLK5045=0;
 B_CS5045=1;
}

//寫(xiě)禁止
void wrdi()
{
 B_SCLK5045=0;
 B_CS5045=0;
    byteout(4);
    B_SCLK5045=0;
 B_CS5045=1;
}