74hc595_drv.c

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#include "config.h"

void    SendByte_595(uint8 u8ByteData)      //发送一个字节到595
{
    uint8 i;
    for( i = 0;i < 8;i++ )
    {
        if( (u8ByteData & 0x80) == 0x80 )
        {
            D_SER = 1;        
        }
        else
        {          
            D_SER = 0;
        }
        u8ByteData <<= 1;
            
        D_SCLK = 0;
        D_SCLK = 1;
    }
}