spi.c

来自「nrf9e5 nordic公司出品的带有无线发送接收的单片机的bootloade」· C语言 代码 · 共 20 行

#include "reg9e5.h"
#include "PubFunc.h"
#include "spi.h"

void SPIReadWrite(BYTE data *buf, BYTE data size)
{
	BYTE data i;
	i=0;
	ActionSPI_CS(0);	
	do{	//for(i=0;i<size;i++)
	//{
	SPI_DATA = buf[i];				// Move byte to send to SPI data register
	while((EXIF & 0x20) == 0x00);    // Wait until SPI hs finished transmitting
    buf[i]=SPI_DATA;	 
	EXIF &= ~0x20;                  // Clear SPI interrupt
	i++;
	}while(i<size);
    ActionSPI_CS(1);
 }