rfcard.h

msp430 NRF2402 2.4G超低功耗识别卡程序for IAR４３０绝对可用

//******************************************************************************
#define  CEon() P1OUT|=BIT2             //ce:p1.2
#define  CEof() P1OUT&=0xfb             //BIT3
#define  CSon() P1OUT|=BIT0             //cs:p1.0
#define  CSof() P1OUT&=0xfe             //BIT0
#define  CKon() P2OUT|=BIT4             //ck:p2.4
#define  CKof() P2OUT&=0xef             //BIT1
#define  DAon() P2OUT|=BIT3             //din:p2.3
#define  DAof() P2OUT&=0xf7             //BIT2
#define  PWon() P1OUT|=BIT3             //pow:p1.3
#define  PWof() P1OUT&=0xf7             //BIT4
//*****************************????******************************************
const unsigned char RFConfig[3]={0x07,0xf7,0x88};
//unsigned char CardNo[4]={0x55,0x99,0x00,0x0f};
unsigned char TXData[9]={0x10,0x10,0x00,0x00,0x01,0x01,0x55,0x55,0x99};
//__no_init unsigned char test[4] @ 0xFFD0; 
//******************************************************************************
// Function prototypes
//******************************************************************************
void DELAY100US(unsigned int num);       //长延时
void Dltime(unsigned int aum);
void InitnRF2402(void); 
void TXDataPacket(void);                 
void runatmode1(void);
void runatmode3(void);
//******************************************************************************
//******************************************************************************
void DELAY100US(unsigned int num) //延时num*100US程序
{
  do
  {
    Dltime(84);                  //168/F2101
  }
  while(--num);
}

void Dltime(unsigned int aum)
{
  unsigned char d=aum;
  do{	
    _NOP();
  }while(--d);
}
//******************************************************************************
// ------2402????
//******************************************************************************
void TXDataPacket(void)
{
        unsigned char tempi;
	unsigned char	ByteCnt;
	unsigned char	BitCnt;
	unsigned char databit;
	CSof();                                 //ChipCS=0;
	CEon();                                 //ChipCE=1; ShockBurst mode
	Dltime(10);
	for (ByteCnt=0;ByteCnt<9;ByteCnt++)
	{
		tempi=TXData[ByteCnt];
		for (BitCnt=0;BitCnt<8;BitCnt++)
		{
			databit=tempi&0x80;
			if (databit==0x80)	//Check if first bit is HIGH
			    DAon();		//Set Data high
			else
			    DAof();	        //Set Data low
			tempi=tempi<<1;	        //Left Shift to get next bit
			CKon();
                        _NOP();
			CKof();		//generate a clock pulse
                        _NOP();
		}
	}
	CEof(); 			//Disable CE (TX Starts!)--standby mode
}
//******************************************************************************
// ------2402设置程序
//******************************************************************************
void InitnRF2402(void)
{
        unsigned char	ByteCnt;
	unsigned char	BitCnt;
	unsigned char  databit;
	unsigned char tempi;
	PWon();
        CEof();
	CSon();
	DELAY100US(10);
	for (ByteCnt=0;ByteCnt<3;ByteCnt++)
	{
		tempi=RFConfig[ByteCnt];
		for (BitCnt=0;BitCnt<8;BitCnt++)
		{
			databit=tempi&0x80;
			if (databit==0x80) //Check if first bit is HIGH
				DAon();		//Set Data high
			else DAof();		//Set Data low
			tempi=tempi<<1;	//Left Shift to get next bit
			CKon();
			CKof();	        //generate a clock pulse
		}
	
	}
	CSof();	                       //Disable CS--standby mode	
}
//******************************************************************************