spi_main.c

nxp lpc2478 spi demo code

/*****************************************************************************
 *   spitest.c:  main C entry file for NXP LPC23xx/24xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.07.20  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#include "LPC24xx.h"                        /* LPC23xx/24xx definitions */
#include "type.h"
#include "irq.h"
#include "timer.h"
#include "..\spi_src\spi.h"

void SegPort( void);
void SegDisplay(BYTE data,BYTE segnum);
void SPI0_Test( void);

/******************************************************************************
**   Main Function  main()
******************************************************************************/
int main (void)
{	    	
  SPIInit();	/* initialize SPI 0 */
  SegPort();		
  while(1)
  {
    SPI0_Test();
  }
  return 0;
}

/*****************************************************************************
** Function name:		SegPort
**
** Descriptions:		初始化8段数码管所需的管脚
**
** parameters:			
** 			     	
** Returned value:		无
**
*****************************************************************************/
void SegPort( void)
{
	PINSEL7  &= 0xFFFFF03F;  //config P3.19~21 as GPIO
	FIO3DIR  |= 0x00380000;  //make P3.19~21 as GPIO
}

/*****************************************************************************
** Function name:		SegDisplay
**
** Descriptions:		单个数码管显示数字0~9
**
** parameters:			data显示数字,
** 			        	segnum需要显示数码管编号	
** Returned value:		None
**
*****************************************************************************/
void SegDisplay(BYTE data,BYTE segnum)
{ 

  if(segnum < 7)
  {
	FIO3MASK &= ~(0xF << 19);
	FIO3PIN  &= 0xFFC7FFFF;
	FIO3PIN  |= segnum << 19;
    FIO3MASK |= 0x7 << 19;
  }
  else
 	return;   

  SPISend(data);
}

/*****************************************************************************
** Function name:		SPI0_Test
**
** Descriptions:		SPI测试程序
**
** parameters:		
** 			        
** Returned value:		无
**
*****************************************************************************/
void SPI0_Test( void)
{
  DWORD i,j,z;
  char word[10] = {~0x3f,~0x6,~0x5b,~0x4f,~0x66,~0x6d,~0x7d,~0x7,~0x7f,~0x6f};
  for(j = 0;j<10;j++)
  for(i = 0;i<10;i++)
  {
    for(z = 1;z<7;z++)
    {
        SegDisplay(word[i],1);
        delayMs(0,10);
		SegDisplay(word[j],2);
        delayMs(0,10);
    }
  }

}
/******************************************************************************
**                            End Of File
******************************************************************************/