main.c

AVR的SPI的通信例子

#include <inavr.h>


#include "main.h"
#include "USART.h"
#include "SPI_Master.h"
#include "key.h"
#include "time.h"

unsigned char KeyMask=1;
unsigned char KeyClk=0;
int main( void )
{
  USART_Init();
  SPIInit();
  Timer2Init();
  PutChar(0xAA);
  __enable_interrupt ();

  while(1)
  {
    SampleTimeFlag=0;
    if(ReadKey()==1&&KeyMask)
    {
      KeyMask=0;
      PutChar(0x88);
      SPIPutChar(0xab);
      PutChar(SPIGetChar());
    }
    if(++KeyClk>100)
    {
      KeyClk=0;
      KeyMask=1;
    }

    while(!SampleTimeFlag);
  }

}