rx433.c

nrf24E1单通道带超时判断无线收发：调试完nrf9e5后就继续调试的

/*******************************************
无线接收的接收端程序：
将接收到的字符显示在串口。

******************************************/

#include <Nordic\reg24e1.h>

struct RFConfig
{
	unsigned char n;
	unsigned char buf[15];
};

typedef struct RFConfig RFConfig;

#define   UART_BUFFER_SIZE    7       //定义串口缓冲区大小 8 bytes

unsigned char UART_BUFFER[UART_BUFFER_SIZE+1];
unsigned char countt;

const RFConfig rxconf =
{
    15,
    0x28, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x87, 0x65, 0x43, 0x21, 0x83, 0x6c, 0x05
};


//延时函数
void Delay100us(volatile unsigned char n)
{
	unsigned char i;
	while(n--)
		for(i=0;i<35;i++)
		    ;
}

//串口发送1Byte
void PutChar(char c)
{
    while(!TI)			            //Wait until finished seri-port transmitting
        ;
	TI = 0;			               //Clear interrupt flag
    SBUF = c;			           //sending a byte
}

//串口发送字符串
void PutString(const char *s,unsigned char strlen)
{
	unsigned char k;
	//EIE &= 0xF0;
	for(k=1;k<=strlen;k++)
	{
	 	PutChar(*(s+k));
	}
	//EIE |= 0x0F;
}


unsigned char SpiReadWrite(unsigned char b)
{
	EXIF &= ~0x20;                  // Clear SPI interrupt        (EXIP.5=0)
	SPI_DATA = b;                   // Move byte to send to SPI data register
	while((EXIF & 0x20) == 0x00)    // Wait until SPI hs finished transmitting   (测试EXIF.5的状态)
	      ;
	return SPI_DATA;
}


void Receiver(void)
{
	CE = 1;       		            //进入接收模式


	while(DR1 == 0)                  //DR1=0表示数据未准备好，等待
	    ;
T1 = ~T1;
	CE = 0;	
	//countt = 0;

	UART_BUFFER[0] = SpiReadWrite(0);

	for(countt = 1;countt <= UART_BUFFER[0];countt++)
		UART_BUFFER[countt] = SpiReadWrite(0); 

}

//nRF24E1串口初始化
void UART_Init(void)                
{
	TH1 = 0xE6;                     // 9600@16MHz (when T1M=1 and SMOD=1)
	CKCON |= 0x30;                  // T1M=1 (/4 timer clock)
	PCON = 0x80;                    // SMOD=1 (double baud rate)
	SCON = 0x52;                    // Serial mode1, enable receiver
	TMOD = 0x20;                    // Timer1 8bit auto reload 
	TR1 = 1;                        // Start timer1  
	P0_ALT |= 0x06;
	P0_DIR  = 0x02;                 // P0.1 (RxD) is input
}

//nRF24E1无线接收模块初始化
void Init(void)                     
{
	unsigned char j;
	PWR_UP=1;
	Delay100us(30);                // Wait > 3ms 
	
	SPICLK = 0;     	           // Max SPI clock (XTAL/8)
	SPI_CTRL = 0x02;               // Connect internal SPI controller to Radio

	CE = 0;                        // Configure Radio:
	CS = 1;
	Delay100us(0);
	for(j=0;j<rxconf.n;j++)
	{
	    SpiReadWrite(rxconf.buf[j]);
	}
	CS = 0;

}

void main(void)
{
	UART_Init();	
	Init();


	//CE=1; 		//进入接收模式		
	while(1)
	{
		Receiver();
		PutString(UART_BUFFER,UART_BUFFER[0]);
	
	}
}