/*

* Project name:

NRF905

* Copyright:

HAZEM ELSAYED.

hazem.elsayed@telia.com

* Revision History:

20150822:

- Rev.1

* Description:

This is a simple 'NRF905 transmitter/receiver' project. It sends 1 byte and increment it every 300ms, reciever display it on port B.

data being transmitted are also shown on port B in the transmitter side.

* Test configuration:

MCU: PIC18F45K22

dev.board: easypic pro v7

Oscillator: HS-PLL 32.0000 MHz, 8.0000 MHz Crystal

Software: mikroC PRO for PIC

*/

#include "nrf905_driver.h"

#define CLR_LATCH 0X00 //CLEAR THE ENTIRE LATCHS BANK

#define DIGITAL 0X00 // CHOOSE DIGITAL MUX

#define PLL_STABLE_TIME 0X96 // WHAIT FOR PLL TO STABLIZE

#define PLL_ENABLE 0X01 // WHAIT FOR PLL TO STABLIZE

#define DIRECTION_OUTPUT 0X00 // PORT DIRECTION

#define DIRECTION_INPUT 0X01 // PORT DIRECTION

#define LOOP 0X01 // LOOP FOREVER

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

* Digital input

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

sfr sbit TRX_CE_NRF_bit at LATA0_bit; // Enables chip for receive and transmit

sfr sbit TRX_CE_NRF_Direction_bit at TRISA0_bit;

sfr sbit PWR_UP_NRF_bit at LATA1_bit; // Power up chip

sfr sbit PWR_UP_NRF_Direction_bit at TRISA1_bit;

sfr sbit TX_EN_NRF_bit at LATA2_bit; //TX/RX mode

sfr sbit TX_EN_NRF_Direction_bit at TRISA2_bit;

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

* Digital output

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

sfr sbit DR_NRF_bit at RD0_bit; // Receive and transmit Data Ready

sfr sbit DR_NRF_Direction_bit at TRISD0_bit;

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

* SPI - interface

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

sfr sbit CS_NRF_bit at LATE0_bit; // SPI CS

sfr sbit CS_NRF_Direction_bit at TRISE0_bit;

void main()

{

PLLEN_bit = PLL_ENABLE; // Enable PLL

Delay_ms(PLL_STABLE_TIME);

ANSELA=DIGITAL; // Set pins as digital

ANSELB=DIGITAL;

ANSELC=DIGITAL;

ANSELE=DIGITAL;

ANSELD=DIGITAL;

TRISB=DIGITAL;

//DIGITAL PIN DIRECTION

DR_NRF_Direction_bit=DIRECTION_INPUT;

TRX_CE_NRF_Direction_bit=DIRECTION_OUTPUT;

PWR_UP_NRF_Direction_bit=DIRECTION_OUTPUT;

TX_EN_NRF_Direction_bit=DIRECTION_OUTPUT;

CS_NRF_Direction_bit=DIRECTION_OUTPUT;

SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV16, _SPI_DATA_SAMPLE_MIDDLE, _SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH);

SPI_Set_Active(&SPI1_Read, &SPI1_Write); // initializes SPI1

Nrf905Init(); // initializes NRF905

LATB=CLR_LATCH;

while(LOOP)

{

LATB=ReceivePacket();

}

}