SPI 源码
急求获得摩托罗拉serial peripheral interface（SPI）DEMO源码的方法，谢谢
在线等啊
[解决办法]
这个看你用得着么
#include "mc9s08gt32.h"
/******************************************************************************
* Function: SpiInit
*
* PreCondition: None .
*
* Input: None .
*
* Output: None .
*
* Side Effects: None
*
* Overview: SpiInit initialized the SPI bus .
*
* Note: None
*****************************************************************************/
void SpiInit(void)
{
SPI1C1_CPHA = 0;
SPI1C1_MSTR = 1;
SPI1C1_SPE = 1; //Enable SPI bus .
SPI1BR = 0x00;
}
/******************************************************************************
* Function: SpiTransfer
*
* PreCondition: SPI bus must be initialized .
*
* Input: The Byte will be transferred .
*
* Output: The Byte Received simultaneous .
*
* Side Effects: None
*
* Overview: SpiTransfer is a basic SPI operation ,it transfer a Byte and
* Receive a Byte simultanous.
*
* Note: None
*****************************************************************************/
unsigned char SpiTransfer(unsigned char C)
{
while(SPI1S_SPTEF == 0);
SPI1D = C;
while(SPI1S_SPRF == 0);
return SPI1D;
}
[解决办法]
在对应芯片的SPEC里面都会有讲怎么访问的呀.
