spi_master.c

SPI主机模式进行串行通信

/** ###################################################################
**     Filename  : spi_master.C
**     Project   : spi_master
**     Processor : 56F8346
**     Version   : Driver 01.10
**     Compiler  : Metrowerks DSP C Compiler
**     Date/Time : 2009-1-12, 16:11
**     Abstract  :
**         Main module.
**         Here is to be placed user's code.
**     Settings  :
**     Contents  :
**         No public methods
**
**     (c) Copyright UNIS, spol. s r.o. 1997-2005
**     UNIS, spol. s r.o.
**     Jundrovska 33
**     624 00 Brno
**     Czech Republic
**     http      : www.processorexpert.com
**     mail      : [e-mail]
** ###################################################################*/
/* MODULE spi_master */

/* Including used modules for compiling procedure */
#include "Cpu.h"
#include "Events.h"
#include "slave_select.h"
#include "PC_M1.h"
#include "Inhr1.h"
#include "SM1.h"
#include "Delay_timer.h"
/* Include shared modules, which are used for whole project */
#include "PE_Types.h"
#include "PE_Error.h"
#include "PE_Const.h"
#include "IO_Map.h"

SM1_TComData   TxByte = NULL;
SM1_TComData   RxByte = NULL;
SM1_TComData   spiRxchar;
volatile  bool  flag = FALSE;


void main(void)
{
  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
  PE_low_level_init();
  /*** End of Processor Expert internal initialization.                    ***/
  PC_M1_pcmasterdrvRecorder();
  /* Write your code here */
  while(1)
  {
    /*select the slave*/
  	slave_select_ClrVal();
  
  	
  	if(SM1_SendChar(TxByte)==ERR_OK)
  	{
  		TxByte=NULL;
  	}
  	
  	/*Delay for periodic polling*/
    Delay_timer_Enable();
    while(flag==FALSE)
    {
    	
    }
    Delay_timer_Disable();
    flag=FALSE;

    /*receive data*/
    if(SM1_RecvChar(&spiRxchar)==ERR_OK)
    {
    	if((spiRxchar!=NULL)&&(spiRxchar!=0xFF))
    	{
           RxByte=spiRxchar;
    	}
    }
    
   /*delect the slave*/
    slave_select_SetVal();

  }
  for(;;) {}
}

/* END spi_master */
/*
** ###################################################################
**
**     This file was created by UNIS Processor Expert 2.97 [03.74]
**     for the Freescale 56800 series of microcontrollers.
**
** ###################################################################
*/