jfp_fasong._c

非常适合实用的无线射频芯片NRF905

//ICC-AVR application builder : 2007-8-11 20:37:32
// Target : M16
// Crystal: 8.0000Mhz
#include <iom16v.h>
#include <macros.h>
#define uint  unsigned int
#define uchar unsigned char
///////////////////////////模式控制定义/////////////////////////////////
//#define  nrf905_TX_EN	  PB0	    //输出1   
#define   Low_nrf905_TX_EN     PORTB &= ~(1 << PB0)
#define   Hign_nrf905_TX_EN    PORTB |= (1 << PB0)
//#define  nrf905_TRX_CE  PD5 	    //输出1
#define   Hign_nrf905_TRX_CE    PORTD |= (1 << PD5)  
#define   Low_nrf905_TRX_CE     PORTD &= ~(1 << PD5) 
//#define  nrf905_PWR     PB1 	    //输出1
#define   Hign_nrf905_PWR    PORTB |= (1 << PB1) 
#define   Low_nrf905_PWR     PORTB &= ~(1 << PB1)
//--------------------------------SPI口定义-------------------------------------
//#define  nrf905_MISO	  PB6   	//输入0
//#define  nrf905_MOSI    PB5	    //输出1
//#define  nrf905_SCK     PB7	    //输出1
#define   Low_nrf905_SCK     PORTB &= ~(1 << PB7)
//------------------------------------------------------------------------------
//#define  nrf905_CSN     PB4		//输出1		
#define   Hign_nrf905_CSN    PORTB |= (1 << PB4)  
#define   Low_nrf905_CSN     PORTB &= ~(1 << PB4)				
//-------------------------------状态输出口-------------------------------------
//#define  nrf905_CD      PD4	    //输入0
#define   Hign_nrf905_CD    PORTD |= (1 << PD4) 
#define   Low_nrf905_CD     PORTD &= ~(1 << PD4) 
#define   Read_nrf905_CD    PINB & (1 << PD4)
//#define  nrf905_AM      PB3	    //输入0
#define   Hign_nrf905_AM    PORTB |= (1 << PB3) 
#define   Low_nrf905_AM     PORTB &= ~(1 << PB3)
#define   Read_nrf905_AM    PINB & (1 << PB3)
//#define  nrf905_DR      PB2  		//输入0
#define   Hign_nrf905_DR    PORTB |= (1 << PB2)
#define   Low_nrf905_DR     PORTB &= ~(1 << PB2)
#define   Read_nrf905_DR    PINB & (1 << PB2)
//读取键值KEYA-KEYB-KEYC  
#define   Read_KEY_A   	    PINA & (1 << PA6)
#define   Read_KEY_B   	    PINA & (1 << PA5)
#define   Read_KEY_C    	PINA & (1 << PA4)
//----------------------------------905-SPI指令---------------------------------
#define WC	0x00
#define RRC	0x10
#define WTP	0x20
#define RTP	0x21
#define WTA	0x22
#define RTA	0x23
#define RRP	0x24
//---------------------------------发送数据-------------------------------------
uchar TxRxBuf[4];
//----------------------------------接收地址------------------------------------
uchar TxAddress[4]={0xcc,0xcc,0xcc,0xcc };    
//----------------------------------寄存器配置----------------------------------
uchar RFConf[11]=
{
  0x00,                             //配置命令//
  0x4c,                             //CH_NO,配置频段在430MHZ
  0x0C,                             //输出功率为10db,不重发，节电为正常模式
  0x44,                             //地址宽度设置，为4字节
  0x04,0x04,                        //接收发送有效数据长度为4字节
  0xCC,0xCC,0xCC,0xCC,              //接收地址
  0x58,                              //CRC充许，8位CRC校验，外部时钟信号不使能，16M晶振
};
//----------------------------------函数申明------------------------------------
void Delay(uint x);
void Spi_initial();
uchar SpiReadSpiWrite(uchar DATA);
void system_Init(void);
void Config905(void);
void TxPacket(uchar TxBUF[4]);
void SetTxMode(void);
void TX(void);
void StartUART(void);
void R_S_Byte(uchar R_Byte);
//----------------------------------100us延时子程序-----------------------------
void Delay(uint x)
{
	uint i;
	while(x--)
	for(i=0;i<80;i++);
}
//----------------------------------SPI初始化-----------------------------------
void Spi_initial()
{
	//SPCR=0x50;
	//SPSR=0x00;	
	SPCR   = (1<<SPE)|(1<<MSTR)|(0<<CPOL)|(0<<SPR0);   // 主机模式，fck/16, SPI方式0
}
//---------------------------------SPI读写程序----------------------------------	
uchar SpiReadSpiWrite(unsigned char cData)//r
{
	SPDR = cData;
	while(!(SPSR & (1<<SPIF) ))
	{};			// 等待SPI发送完毕
	return SPDR;
}
//---------------------------------系统状态初始化-------------------------------
void system_Init(void)			//r
{

   	Hign_nrf905_CSN;				// Spi 	disable
	Low_nrf905_SCK;				// Spi clock line init low
	Low_nrf905_DR;				// Init DR for input
	Low_nrf905_AM;				// Init AM for input
	Low_nrf905_CD;				// Init nrf905_CDfor input
	Hign_nrf905_PWR;				// nRF905 power on
	Low_nrf905_TRX_CE;			// Set nRF905 in standby mode
	Low_nrf905_TX_EN ;			// set radio in Rx mode
}
//--------------------------------NRF905寄存器初始化函数------------------------
void Config905(void)
{
	uchar i;
	Low_nrf905_CSN;	
	Delay(1);				// Spi enable for write a spi command
	//SpiWrite(WC);				// Write config command写放配置命令
	for (i=0;i<11;i++)			// Write configration words  写放配置字
	{
	 SpiReadSpiWrite(RFConf[i]);
	}
	Hign_nrf905_CSN;					// Disable Spi
}
//--------------------------------NRF905待发数据打包----------------------------
void TxPacket(uchar TxBUF[4])
{
	uchar i;
	Low_nrf905_CSN;		   						// 使能Spi，允许对nrf905进行读写操作
	Delay(1);
	SpiReadSpiWrite(WTP);				// 写数据前先写写数据命令
	for (i=0;i<4;i++)
	{
	SpiReadSpiWrite(TxBUF[i]);		// 待发送的32字节数据
	}						
	Hign_nrf905_CSN;
	Delay(1);							// 关闭Spi，不允许对nrf905进行读写操作
	Low_nrf905_CSN;								// 使能Spi
	SpiReadSpiWrite(WTA);				// 写地址前首先先写地址命令
	for (i=0;i<4;i++)					// 写 4 bytes 地址
	{
	SpiReadSpiWrite(TxAddress[i]);
	}
	Hign_nrf905_CSN;					// 关闭Spi
	Hign_nrf905_TRX_CE;					// Set TRX_CE high,start Tx data transmission
	Delay(1);							// 等待DR变高
	Low_nrf905_TRX_CE;							// 设置TRX_CE=0
}
//-------------------------------发送模式激发-----------------------------------
void SetTxMode(void)
{
	Low_nrf905_TRX_CE;				//
	Hign_nrf905_TX_EN;				//发送使能
	Delay(2); 				// delay for mode change(>=650us)根据晶振不同要改变
}
//------------------------------主函数------------------------------------------
void main(void)
{  
	uint i,j,temp[32];
	DDRD=0x32;		  //
	DDRB=0xB3;		  //
	DDRA=0x8f;		  //
	PORTA = 0xff;
	Spi_initial();
	system_Init();
	Config905();
	Delay(500);
	while(1)
 {
	//TX();

//------------------------------------------------------------------------------
	if((PINA & 0x10) == 0x00)						//有键按下
	{
	 while(!(PINA & 0x10));   			//等待按键松开  RED
	 TxRxBuf[0]=0x31;
	 TxRxBuf[1]=0x31;
	 TxRxBuf[2]=0x29;
	 TxRxBuf[3]=0x30;   

//------------------------------------------------------------------------------
     SetTxMode();
	 TxPacket(TxRxBuf);// Send data by nRF905
	}
//------------------------------------------------------------------------------
	if((PINA & 0x20) == 0x00)		//有键按下
	{
while(!(PINA & 0x20));   			//等待按键松开GREEN
	 TxRxBuf[0]=0x30;
	 TxRxBuf[1]=0x31;
	 TxRxBuf[2]=0x32;
	 TxRxBuf[3]=0x29;    
//------------------------------------------------------------------------------
     SetTxMode();			        // 设置进入发送状态
	 TxPacket(TxRxBuf);			    // 装载待发送数据
	 }
//------------------------------------------------------------------------------
	if((PINA & 0x40) == 0x00)	    //有键按下
	{
	while(!(PINA & 0x40));   		//等待按键松开GREEN
 	 TxRxBuf[0]=0x29;
	 TxRxBuf[1]=0x30;
	 TxRxBuf[2]=0x31;
	 TxRxBuf[3]=0x32;  
//------------------------------------------------------------------------------
     SetTxMode();                   // 设置进入发送状态
	 TxPacket(TxRxBuf);             // 装载待发送数据
	 }
}
}