PIC18F4520 + NRF24L01

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SI SO应该对调过来用。。

/*** 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 prototypesvoid 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_SCKLATCbits.LATC3// Clock pin, PORTC pin 3 #define SPI_SOLATCbits.LATC5// Serial output pin, PORTC pin 5 #define SPI_SIPORTCbits.RC4// Serial input pin, PORTC pin 4 #define SPI_CSNLATCbits.LATC2// CSN output pin, PORTC pin 2#define SPI_CELATCbits.LATC1// CE output pin, PORTC pin 1#define SPI_IRQPORTBbits.RB0// IRQ input pin, PORTB pin 0#define SPI_SCALE4              // postscaling of signal #define LEDLATDbits.LATD1#define PBPORTAbits.RA1// Macros#define nop() _asm nop _endasmvoid main(void){init();configure_transmitter();  while (1)  {transmit_data();LED = 1;dly(63973);//200 ms delayLED = 0;           dly(40000);//3.27 s delay nop();          }}void init(void){// run internal oscillator at 8 MHzOSCCON = OSCCON | 0x70;while (OSCCONbits.IOFS == 0);PORTA = 0x00;PORTD = 0X00;ADCON1 = 0x0F;// set up PORTA to be digital I/OsTRISA = 0x02;// PORTA<7.2,0> outputs PORTA<1> inputTRISD = 0XFD;TRISCbits.TRISC3 = 0;// SDO outputTRISCbits.TRISC4 = 1;TRISCbits.TRISC5 = 0;   // SCK outputTRISCbits.TRISC2 = 0;// CSN outputTRISCbits.TRISC1 = 0;// CE outputTRISBbits.TRISB0 = 1;// IRQ inputOpenSPI(SPI_FOSC_16, MODE_00, SMPMID); //open SPI1OpenTimer0( 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.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 prototypesvoid init(void);void reset_RX(void);void configure_RX(void);unsigned char spi_Send_Read(unsigned char);void dly(unsigned int);// Defines#define SPI_SCKLATCbits.LATC3// Clock pin, PORTC pin 3 #define SPI_SOLATCbits.LATC5// Serial output pin, PORTC pin 5 #define SPI_SIPORTCbits.RC4// Serial input pin, PORTC pin 4 #define SPI_CSNLATCbits.LATC2// CSN output pin, PORTC pin 2#define SPI_CELATCbits.LATC1// CE output pin, PORTC pin 1#define SPI_IRQPORTBbits.RB0// IRQ input pin, PORTB pin 0#define SPI_SCALE4              // postscaling of signal #define LEDLATDbits.LATD1#define PBPORTAbits.RA1// Macros#define nop() _asm nop _endasmvoid 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 18F4520void init(void){// run internal oscillator at 8 MHzOSCCON = OSCCON | 0x70;while (OSCCONbits.IOFS == 0);PORTA = 0x00;PORTD = 0X00;ADCON1 = 0x0F;// set up PORTA to be digital I/OsTRISA = 0x02;// PORTA<7.2,0> outputs PORTA<1> inputTRISD = 0XFD;TRISCbits.TRISC3 = 0;// SDO outputTRISCbits.TRISC4 = 1;TRISCbits.TRISC5 = 0;   // SCK outputTRISCbits.TRISC2 = 0;// CSN outputTRISCbits.TRISC1 = 0;// CE outputTRISBbits.TRISB0 = 1;// IRQ inputOpenSPI(SPI_FOSC_16, MODE_00, SMPMID); //open SPI1OpenTimer0( TIMER_INT_OFF &            T0_16BIT &            T0_SOURCE_INT &            T0_PS_1_256 );}//configure nRF24L01 for receivevoid configure_RX(void){    unsigned char i, j;    SPI_CSN = 0;    SPI_CE = 0;    //PRX, CRC enabledspi_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** ** RA0LED (output)** RA1PB (input)*/#include <p18f4520.h>#include <spi.h>//function prototypesunsigned char spi_Send_Read(unsigned char);// Defines#define SPI_SCKLATCbits.LATC3// Clock pin, PORTC pin 3 #define SPI_SOLATCbits.LATC5// Serial output pin, PORTC pin 5 #define SPI_SIPORTCbits.RC4// Serial input pin, PORTC pin 4 #define SPI_CSNLATCbits.LATC2// CSN output pin, PORTC pin 2#define SPI_CELATCbits.LATC1// CE output pin, PORTC pin 1#define SPI_IRQPORTBbits.RB0// IRQ input pin, PORTB pin 0#define SPI_SCALE4              // postscaling of signal #define LEDLATAbits.LATA0#define PBPORTAbits.RA1// Macros#define nop() _asm nop _endasmvoid main(void){unsigned char status = 0;unsigned char data[5];int i;// run internal oscillator at 8 MHzOSCCON = OSCCON | 0x70;while (OSCCONbits.IOFS == 0);OpenSPI(SPI_FOSC_16, MODE_00, SMPMID); //open SPI1PORTA = 0x00;ADCON1 = 0x0F;// set up PORTA to be digital I/OsTRISA = 0x02;// PORTA<7.2,0> outputs PORTA<1> inputTRISCbits.TRISC3 = 0;// SDO outputTRISCbits.TRISC5 = 0;   // SCK outputTRISCbits.TRISC4 =1;TRISCbits.TRISC2 = 0;// CSN outputTRISCbits.TRISC1 = 0;// CE outputSPI_CSN = 1;// CSN highSPI_SCK = 0;// SCK lowSPI_CE= 0;// CE lownop();//write TX_ADDRESS registerSPI_CSN = 0;//CSN lowspi_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 debuggerSPI_CSN = 0;//CSN lowstatus = spi_Send_Read(0x10);data[0] = spi_Send_Read(0x00);// 0x11data[1] = spi_Send_Read(0x00);// 0x22data[2] = spi_Send_Read(0x00);// 0x33data[3] = spi_Send_Read(0x00);// 0x44data[4] = spi_Send_Read(0x00);// 0x55SPI_CSN = 1;//CSN high// test PB and LEDwhile(1){if (!PB)LED = 1;elseLED = 0;}}unsigned char spi_Send_Read(unsigned char byte){SSPBUF = byte;while(!DataRdySPI());return SSPBUF;}

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