writespi1.c

来自「基於 c51/8051 的 nand Flash Memory HY27US08」· C语言 代码 · 共 25 行

#if defined(__PIC24F__)
#include <p24Fxxxx.h>
#endif
#include "spi.h"

/********************************************************************
*     Function Name : WriteSPI1                                     *
*     Description   : This routine writes a single byte/word to     * 
*                     the SPI bus.                                  *
*     Parameters    : Single data byte/word for SPI bus             *
*     Return Value  : None                                          *
********************************************************************/
#ifdef _SPI_V2_1

void WriteSPI1(unsigned int data_out)
{   
    if (SPI1CON1bits.MODE16)          /* word write */
        SPI1BUF = data_out;
    else 
        SPI1BUF = data_out & 0xff;   /*  byte write  */
}
#else
#warning "Does not build on this target"
#endif