SI SO应该对调过来用。。

TX

/*

** Tx.c

** Transmit test program for PIC18F4520 and nRF24L01 or nRF24L01+

** Uses the Microchip C18 compiler

** Based on SFE code for the CC5X compiler in 24L01demo_V01.c

*/

#include <p18cxxx.h>

#include <spi.h>

#include <timers.h>

// Pragmas

#pragma config OSC = INTIO67

#pragma config PWRT = ON

//#pragma config MCLRE = OFF

#pragma config BOREN = OFF

//function prototypes

void init(void);

void transmit_data(void);

void configure_transmitter(void);

unsigned char spi_Send_Read(unsigned char);

unsigned char spi1_send_read_byte(unsigned char byte);

void dly(unsigned int);

// Defines

#define SPI_SCK		LATCbits.LATC3		// Clock pin, PORTC pin 3

#define SPI_SO		LATCbits.LATC5		// Serial output pin, PORTC pin 5

#define SPI_SI		PORTCbits.RC4		// Serial input pin, PORTC pin 4

#define SPI_CSN		LATCbits.LATC2		// CSN output pin, PORTC pin 2

#define SPI_CE		LATCbits.LATC1		// CE output pin, PORTC pin 1

#define SPI_IRQ		PORTBbits.RB0		// IRQ input pin, PORTB pin 0

#define SPI_SCALE	4              		// postscaling of signal

#define LED			LATDbits.LATD1

#define PB			PORTAbits.RA1

// Macros

#define nop() _asm nop _endasm

void main(void)

{

	init();

	configure_transmitter();

	while (1)

	{

		transmit_data();

		LED = 1;

		dly(63973);			//200 ms delay

		LED = 0;

		dly(40000);			//3.27 s delay

		nop();

	}

}

void init(void)

{

	// run internal oscillator at 8 MHz

	OSCCON = OSCCON | 0x70;

	while (OSCCONbits.IOFS == 0)

		;

	PORTA = 0x00;

	PORTD = 0X00;

	ADCON1 = 0x0F;		// set up PORTA to be digital I/Os

	TRISA = 0x02;		// PORTA<7.2,0> outputs PORTA<1> input

	TRISD = 0XFD;

	TRISCbits.TRISC3 = 0;	// SDO output

	TRISCbits.TRISC4 = 1;

	TRISCbits.TRISC5 = 0;   // SCK output

	TRISCbits.TRISC2 = 0;	// CSN output

	TRISCbits.TRISC1 = 0;	// CE output

	TRISBbits.TRISB0 = 1;	// IRQ input

	OpenSPI(SPI_FOSC_16, MODE_00, SMPMID); //open SPI1

	OpenTimer0( TIMER_INT_OFF &

            	T0_16BIT &

            	T0_SOURCE_INT &

            	T0_PS_1_256 );

}

void configure_transmitter(void)

{

    unsigned char i, j, data, cmd;

    SPI_CE = 0;

    SPI_CSN = 0;

	// PTX, CRC enabled, mask a couple of ints

 	spi_Send_Read(0x20);

  	spi_Send_Read(0x38);

	SPI_CSN = 1;

    SPI_CSN = 0;

	//auto retransmit off

 	spi_Send_Read(0x24);

   	spi_Send_Read(0x00);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//address width = 5

   	spi_Send_Read(0x23);

 	spi_Send_Read(0x03);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//data rate = 1MB

   	spi_Send_Read(0x26);

 	spi_Send_Read(0x07);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//set channel 2, this is default but we did it anyway...

   	spi_Send_Read(0x25);

 	spi_Send_Read(0x02);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//set address E7E7E7E7E7, also default...

   	spi_Send_Read(0x30);

    for (j = 0; j < 5; j++)

    {

        spi_Send_Read(0xE7);

    }

    SPI_CSN = 1;

    SPI_CSN = 0;

    //disable auto-ack, RX mode

    //shouldn't have to do this, but it won't TX if you don't

   	spi_Send_Read(0x21);

 	spi_Send_Read(0x00);

    SPI_CSN = 1;

}

void transmit_data(void)

{

    unsigned char i, data, cmd;   

    SPI_CSN = 0;

	//clear previous ints

  	spi_Send_Read(0x27);

 	spi_Send_Read(0x7E);

	SPI_CSN = 1;

    SPI_CSN = 0;

	//PWR_UP = 1

   	spi_Send_Read(0x20);

 	spi_Send_Read(0x3A);

    SPI_CSN = 1;

    SPI_CSN = 0;

    //clear TX fifo

    //the data sheet says that this is supposed to come up 0 after POR, but that doesn't seem to be the case

   	spi_Send_Read(0xE1);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//4 byte payload

   	spi_Send_Read(0xA0);

   	spi_Send_Read(0x34);

  	spi_Send_Read(0x33);

   	spi_Send_Read(0x32);

  	spi_Send_Read(0x31);

    SPI_CSN = 1;

    //Pulse CE to start transmission

    SPI_CE = 1;

    dly(65000);			//delay 69 ms

    SPI_CE = 0;

}

unsigned char spi_Send_Read(unsigned char byte)

{

	SSPBUF = byte;

	while(!DataRdySPI())

		;

	return SSPBUF;

}	

void dly(unsigned int c)

{

	INTCONbits.TMR0IF = 0;

	WriteTimer0(c);

	while (INTCONbits.TMR0IF == 0)

		;

}

RX

/*

** Rx.c

** Receive test program for PIC18F4520 and nRF24L01 or nRF24L01+

** Uses the Microchip C18 compiler

** Based on SFE code for the CC5X compiler in 24L01demo_V01.c

**

** The LED is flashed five times when data are received.

** The received data in the buffer may be checked using the

** debugger Watch window.*/

#include <p18cxxx.h>

#include <spi.h>

#include <timers.h>

// Pragmas

#pragma config OSC = INTIO67

#pragma config PWRT = ON

#pragma config MCLRE = OFF

#pragma config BOREN = OFF

//function prototypes

void init(void);

void reset_RX(void);

void configure_RX(void);

unsigned char spi_Send_Read(unsigned char);

void dly(unsigned int);

// Defines

#define SPI_SCK		LATCbits.LATC3		// Clock pin, PORTC pin 3

#define SPI_SO		LATCbits.LATC5		// Serial output pin, PORTC pin 5

#define SPI_SI		PORTCbits.RC4		// Serial input pin, PORTC pin 4

#define SPI_CSN		LATCbits.LATC2		// CSN output pin, PORTC pin 2

#define SPI_CE		LATCbits.LATC1		// CE output pin, PORTC pin 1

#define SPI_IRQ		PORTBbits.RB0		// IRQ input pin, PORTB pin 0

#define SPI_SCALE	4              		// postscaling of signal

#define LED			LATDbits.LATD1

#define PB			PORTAbits.RA1

// Macros

#define nop() _asm nop _endasm

void main(void)

{

	unsigned char i;

	init();

	configure_RX();

	while(1)

	{

   		if (SPI_IRQ == 0)    //wait for anything

        {

            for (i = 0; i < 5; i++)  //flash LED 5 times if data received

            {

                LED = 1;

                dly(63973);		// 200 ms delay

                LED = 0;

                dly(63973);		// 196 ms

            }

            dly(63973);			// 196 ms

            reset_RX();

        }

	}

}

// initialise 18F4520

void init(void)

{

	// run internal oscillator at 8 MHz

	OSCCON = OSCCON | 0x70;

	while (OSCCONbits.IOFS == 0)

		;

	PORTA = 0x00;

	PORTD = 0X00;

	ADCON1 = 0x0F;		// set up PORTA to be digital I/Os

	TRISA = 0x02;		// PORTA<7.2,0> outputs PORTA<1> input

	TRISD = 0XFD;

	TRISCbits.TRISC3 = 0;	// SDO output

	TRISCbits.TRISC4 = 1;

	TRISCbits.TRISC5 = 0;   // SCK output

	TRISCbits.TRISC2 = 0;	// CSN output

	TRISCbits.TRISC1 = 0;	// CE output

	TRISBbits.TRISB0 = 1;	// IRQ input

	OpenSPI(SPI_FOSC_16, MODE_00, SMPMID); //open SPI1

	OpenTimer0( TIMER_INT_OFF &

            	T0_16BIT &

            	T0_SOURCE_INT &

            	T0_PS_1_256 );

}

//configure nRF24L01 for receive

void configure_RX(void)

{

    unsigned char i, j;

    SPI_CSN = 0;

    SPI_CE = 0;

	//PRX, CRC enabled

	spi_Send_Read(0x20);

	spi_Send_Read(0x39);

	SPI_CSN = 1;

	SPI_CSN = 0;

	//disable auto-ack for all channels

	spi_Send_Read(0x21);

	spi_Send_Read(0x00);

	SPI_CSN = 1;

	SPI_CSN = 0;

	//address width = 5 bytes

  	spi_Send_Read(0x23);

	spi_Send_Read(0x03);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//data rate = 1MB

  	spi_Send_Read(0x26);

	spi_Send_Read(0x07);

    SPI_CSN = 1;

  	SPI_CSN = 0;

	//4 byte payload

 	spi_Send_Read(0x31);

	spi_Send_Read(0x04);

    SPI_CSN = 1;

    SPI_CSN = 0;

    //set channel 2

   	spi_Send_Read(0x25);

	spi_Send_Read(0x02);

    SPI_CSN = 1;

    SPI_CSN = 0;

    //set address E7E7E7E7E7

    spi_Send_Read(0x30);

    for (j = 0; j < 5; j++)

 		spi_Send_Read(0xE7);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//PWR_UP = 1

 	spi_Send_Read(0x20);

	spi_Send_Read(0x3B);

    SPI_CSN = 1;

    SPI_CE = 1;

}

void reset_RX(void)

{

    unsigned char i, j;

    unsigned char buffer[4];    

	//Read RX payload

    SPI_CSN = 0;

   	spi_Send_Read(0x61);

    for (j = 0; j < 4; j++)

    {

       	buffer[j] = spi_Send_Read(0);

    }

    SPI_CSN = 1;    

	//Flush RX FIFO

    SPI_CSN = 0;

 	spi_Send_Read(0xE2);

    SPI_CSN = 1;

    SPI_CSN = 0;

	//reset int

  	spi_Send_Read(0x27);

	spi_Send_Read(0x40);

    SPI_CSN = 1;

}

unsigned char spi_Send_Read(unsigned char byte)

{

	SSPBUF = byte;

	while(!DataRdySPI())

		;

	return SSPBUF;

}	

void dly(unsigned int c)

{

	INTCONbits.TMR0IF = 0;

	WriteTimer0(c);

	while (INTCONbits.TMR0IF == 0)

		;

}

用PICKIT3 DEBUGER 看SSPBUF 来test addr

/*

** test.c

** SPI test program for PIC18F4520 and nRF24L01 or nRF24L01+

** Checks SPI comms between PIC and wireless chip

**

** RA0	LED (output)

** RA1	PB (input)

*/

#include <p18f4520.h>

#include <spi.h>

//function prototypes

unsigned char spi_Send_Read(unsigned char);

// Defines

#define SPI_SCK		LATCbits.LATC3		// Clock pin, PORTC pin 3

#define SPI_SO		LATCbits.LATC5		// Serial output pin, PORTC pin 5

#define SPI_SI		PORTCbits.RC4		// Serial input pin, PORTC pin 4

#define SPI_CSN		LATCbits.LATC2		// CSN output pin, PORTC pin 2

#define SPI_CE		LATCbits.LATC1		// CE output pin, PORTC pin 1

#define SPI_IRQ		PORTBbits.RB0		// IRQ input pin, PORTB pin 0

#define SPI_SCALE	4              		// postscaling of signal

#define LED			LATAbits.LATA0

#define PB			PORTAbits.RA1

// Macros

#define nop() _asm nop _endasm

void main(void)

{

	unsigned char status = 0;

	unsigned char data[5];

	int i;

	// run internal oscillator at 8 MHz

	OSCCON = OSCCON | 0x70;

	while (OSCCONbits.IOFS == 0)

		;

	OpenSPI(SPI_FOSC_16, MODE_00, SMPMID); //open SPI1

	PORTA = 0x00;

	ADCON1 = 0x0F;		// set up PORTA to be digital I/Os

	TRISA = 0x02;		// PORTA<7.2,0> outputs PORTA<1> input

	TRISCbits.TRISC3 = 0;	// SDO output

	TRISCbits.TRISC5 = 0;   // SCK output

	TRISCbits.TRISC4 =1;

	TRISCbits.TRISC2 = 0;	// CSN output

	TRISCbits.TRISC1 = 0;	// CE output

	SPI_CSN = 1;		// CSN high

	SPI_SCK = 0;		// SCK low

	SPI_CE	= 0;		// CE low

	nop();

	//write TX_ADDRESS register

	SPI_CSN = 0;			//CSN low

	spi_Send_Read(0x30);

	spi_Send_Read(0x11);

	spi_Send_Read(0x22);

	spi_Send_Read(0x33);

	spi_Send_Read(0x44);

	spi_Send_Read(0x55);

	SPI_CSN = 1;			//CSN high

	//read TX_ADDRESS register

	//Check that values are correct using the MPLAB debugger

	SPI_CSN = 0;			//CSN low

	status = spi_Send_Read(0x10);

	data[0] = spi_Send_Read(0x00);	// 0x11

	data[1] = spi_Send_Read(0x00);	// 0x22

	data[2] = spi_Send_Read(0x00);	// 0x33

	data[3] = spi_Send_Read(0x00);	// 0x44

	data[4] = spi_Send_Read(0x00);	// 0x55

	SPI_CSN = 1;			//CSN high

	// test PB and LED

	while(1)

	{

		if (!PB)

			LED = 1;

		else

			LED = 0;

	}

}

unsigned char spi_Send_Read(unsigned char byte)

{

	SSPBUF = byte;

	while(!DataRdySPI())

		;

	return SSPBUF;

}

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