crt2400anc.c

无线收发芯片2401

/************************************************************************************
*					NOTICE:										
*        THIS IS A USER  DOCUMENT	OF COMAIT					
*        NAME:                    2401TEST_BOARD_V03.C  									
*        USE:                        The 2.4GHz RF Module Test Board 				
*        VERSION:              0.3														
*        REF_DOC:             2401TEST_BOARD_V02.C 								
*        START DATE:       31/12/2003											
*        END DATE:            31/12/2003											
*        MCU:                 AT89C2051 DIP20 (Atmel)								
*        CRYSTAL:              4.00MHz
*        CHANNEL:             2
*        FREQUENCY:       2450MHz
*        COMPANY:           Comait Technology Inc.
*        WRITER:                Eric Chang												
*        DATA RATE:        1MBps													
*        FUNCTION DESCRIPTION:	
			1. CRC16
			2. Address length:    40Bit  (5Byte)
			3. Address:                 AA,BB,CC,DD,EE(H->L)
			4. Payload length:    64Bit (8 Bytes,Max 25 Bytes)  
			5. Out Power:            0dBm								
************************************************************************************/

#include <At89x051.h>

//AT89C2051 pins define
#define DIN P3_0
#define DOUT P3_1
#define START_SW     P3_3
#define STOP_SW P3_7
#define LED1    P3_4
 
#define CE P1_7
#define PWR_UP P1_6                
#define CLK2 P1_5         
#define DR2 P1_4 
#define CS P1_3                  
#define DOUT2 P1_2   
#define DR1 P3_2      
#define CLK1 P1_1
#define DATA P1_0           
#define LED2 P3_5

//Config bytes define for the test mode ,the head is config18 and the end is config1//
const unsigned test_config[18]={
		0x8e,0x08,0x1e,  	//1c->burst mode;1e->test mode
		0x40,0x40,
		0xaa,0xbb,0xcc,0xdd,0xee,
		0xaa,0xbb,0xcc,0xdd,0xee,
		0xa3,0x2f,		//6f->burst mode;2f->test mode
		0x64		//2450MHz
	};		

//Config bytes define,the head is config18 and the end is config1//
const unsigned configbyte[18]={
		0x8e,0x08,0x1c,  	//1c->burst mode;1e->test mode
		0x40,0x40,
		0xaa,0xbb,0xcc,0xdd,0xee,
		0xaa,0xbb,0xcc,0xdd,0xee,
		0xa3,0x6f,		//6f->burst mode;2f->test mode
		0x65		//2450MHz
	};

unsigned data_buffer[25];		//The data buffer for one time transmission 
unsigned char data_counter;
unsigned char increase_data;
unsigned char task_switch;

unsigned i,j,temp1;

void system_init();
void send_byte_pc(unsigned char data);
void send_data_pc(unsigned char length);
void config_some_bits(unsigned configbytes,unsigned bitnumber);
void config_send_one_byte(unsigned configbytes);
void config_2401();
void config_test();
void receive_data(unsigned input_data);
unsigned  receive_one_byte(void);
void delay_ms(unsigned long delay_counter);
void main(void);

/*********************************************************************************
* function:         myinit()	                                                  
* use:	             initilize some normal parameter			
* input parameter:  none							
* output parameter: none						
*********************************************************************************/
void system_init()
{	
        task_switch=2;					//Set the test board default mode as receive mode
	increase_data=0x41;	
	pwr_up=0;
	ce=0;
	cs=0;
	clk1=0;
	data=0;
	
	TMOD=0x20;				//config UART rate
	SCON=0x50;				//19.2kbps(max 20kbps)
	PCON=0x80;
	TH1=0xfd;
	TL1=0xfd;
	TR1=1;
	EA=0;
	ES=0;

	for(i=0;i<25;i++)				//Clear the data buffer
	{
		data_buffer[i]=0;
	}	
	
	if(START SW==0)				//For the RF frequency test
	{						//If the start_button is pressed during the power on	                                             
		delay_ms(100);
		if(START SW==0)
		{       
			P1&=0X10;
			pwr_up=1;
			ce=1;
			config_test();
			while(1);
		}	
	}
	P1&=0X10;
	config_2401();
	P1|=0X01;			               	//config the nrf2401    
       	delay_ms(2);  
    	
	led1=0;						//Turn on the led indicate the system is already for receive data
	led2=1;	
} 
/***********************************myinit() END*************************************/



/***********************************************************************************
* function:         send_byte_pc()													
* use:	             send one byte to pc used simulater serial port (38.4KBps,only for HOLTEK MCU)		
* input parameter:	 the data for sending									
* output parameter: none									
***********************************************************************************/
void send_byte_pc(unsigned sendbyte)
{	
	unsigned int *tpointer;

	temp1=sendbyte;
	dout=0;					// send start bit
	_delay(10);
	i=0;						// send one byte
	while (i<8)	
	{
		tpointer=&temp1;
		_rrc(tpointer);
		if(_c==0)
		{
			clrPA4();
		}
		else
		{
			setPA4();
		}
		_delay(10);
		i++;
	}
	_delay(6);					//complement LSB delay time 
	dout=1;					//send stop bit
	_delay(4);
}	
/*******************************send_byte_pc() END**********************************/

/***********************************************************************************
* function:         send_data_pc()									
* use:	             send buffer data to pc used simulate serial port		
* input parameter:	 the length  for repare send data buffer			
* output parameter: none												
***********************************************************************************/
void send_data_pc(unsigned char length)
{		
	unsigned char temp_counter;
  	
  	for(temp_counter=0;temp_counter<length;temp_counter++)
	{
		send_byte_pc(data_buffer[temp_counter]);
	}	
}
	
/*******************************send_data_pc() END***********************************/

/************************************************************************************
* function:         config_send_one_byte()									
* use:	             one time config 2401 RF module one byte				
* input parameter:	 unsigned 									
* output parameter: none										
************************************************************************************/
void config_send_one_byte(unsigned configbytes)
{
	unsigned int *tpointer;
	temp1=configbytes;
	tpointer=&temp1;
	i=0;								// send one byte
	while (i<8)							//SPI data send protocol
	{		
		_rlc(tpointer);
		if(_c==0)
		{
			clrP1_0();
		}
		else
		{
			setP1_0();
		}					
		clk1=1;
		_nop();
		i++;
		clk1=0;

	}
	data=0;
}
/****************************config_send_one_byte() END******************************/

/************************************************************************************
* function:         config_2401()												
* use:	             config 2401 RF module						
* input parameter:	 none											
* output parameter: none									
************************************************************************************/
void config_2401()
{
	pwr_up=1;						//pwr_up=1:Power Up
	delay_ms(5);						//delay 4ms
	ce=0;							//ce=0:chip configuration mode
	cs=1;							//cs=1:chip select activates configuration mode
	_delay(25);
	j=0;
	while (j<18)
	{
		config_send_one_byte(configbyte[j]);
		j++;	
	}
	cs=0;
	_delay(3);
	dr1=0;	
	clk1=0;
	data=0;
	ce=1;							//ce=1:activates RF2401 on-board data processing
}
/*********************************config_2401() END***********************************/



/************************************************************************************
* function:         config_test()											
* use:	             config 2401 RF module as test mode fot the frequency test		
* input parameter:	 none										
* output parameter: none										
************************************************************************************/