// nRF24L01.h
#ifndef _NRF24L01_H_
#define _NRF24L01_H_

#include "Common.h"
#include "Delay.h"


#define NRF_CE          P11
#define NRF_CSN         P15
#define NRF_SCK         P10
#define NRF_MOSI        P00
#define NRF_MISO        P01
#define NRF_IRQ         P03


#define TX_ADR_WIDTH    5   // 5 bytes TX address width
#define RX_ADR_WIDTH    5   // 5 bytes RX address width
#define TX_PLOAD_WIDTH  32  // 20 bytes TX payload
#define RX_PLOAD_WIDTH  32  // 20 bytes TX payload

#ifndef uchar
typedef unsigned char uchar;
#endif
//****************************************************************//
// SPI(nRF24L01) commands
#define READ_REG        0x00  // Define read command to register
#define WRITE_REG       0x20  // Define write command to register
#define RD_RX_PLOAD     0x61  // Define RX payload register address
#define WR_TX_PLOAD     0xA0  // Define TX payload register address
#define FLUSH_TX        0xE1  // Define flush TX register command
#define FLUSH_RX        0xE2  // Define flush RX register command
#define REUSE_TX_PL     0xE3  // Define reuse TX payload register command
#define NOP             0xFF  // Define No Operation, might be used to read status register


//***************************************************//
// SPI(nRF24L01) registers(addresses)
#define CONFIG          0x00  // 'Config' register address
#define EN_AA           0x01  // 'Enable Auto Acknowledgment' register address
#define EN_RXADDR       0x02  // 'Enabled RX addresses' register address
#define SETUP_AW        0x03  // 'Setup address width' register address
#define SETUP_RETR      0x04  // 'Setup Auto. Retrans' register address
#define RF_CH           0x05  // 'RF channel' register address
#define RF_SETUP        0x06  // 'RF setup' register address
#define STATUS          0x07  // 'Status' register address
#define OBSERVE_TX      0x08  // 'Observe TX' register address
#define CD              0x09  // 'Carrier Detect' register address
#define RX_ADDR_P0      0x0A  // 'RX address pipe0' register address
#define RX_ADDR_P1      0x0B  // 'RX address pipe1' register address
#define RX_ADDR_P2      0x0C  // 'RX address pipe2' register address
#define RX_ADDR_P3      0x0D  // 'RX address pipe3' register address
#define RX_ADDR_P4      0x0E  // 'RX address pipe4' register address
#define RX_ADDR_P5      0x0F  // 'RX address pipe5' register address
#define TX_ADDR         0x10  // 'TX address' register address
#define RX_PW_P0        0x11  // 'RX payload width, pipe0' register address
#define RX_PW_P1        0x12  // 'RX payload width, pipe1' register address
#define RX_PW_P2        0x13  // 'RX payload width, pipe2' register address
#define RX_PW_P3        0x14  // 'RX payload width, pipe3' register address
#define RX_PW_P4        0x15  // 'RX payload width, pipe4' register address
#define RX_PW_P5        0x16  // 'RX payload width, pipe5' register address
#define FIFO_STATUS     0x17  // 'FIFO Status Register' register address

//***************************************************************//
//                   FUNCTION's PROTOTYPES  //
/****************************************************************/
// void SPI_Init(uchar Mode);     // Init HW or SW SPI
uchar SPI_RW ( uchar byte );                             // Single SPI read/write
uchar SPI_Read ( uchar reg );                            // Read one byte from nRF24L01
uchar SPI_RW_Reg ( uchar reg, uchar byte );               // Write one byte to register 'reg'
uchar SPI_Write_Buf ( uchar reg, uchar *pBuf, uchar bytes ); // Writes multiply bytes to one register
uchar SPI_Read_Buf ( uchar reg, uchar *pBuf, uchar bytes ); // Read multiply bytes from one register
//*****************************************************************/

void inerDelay_us ( unsigned char n );

void nRF24L01_init ( void ) ;

void SetRX_Mode ( void );
unsigned char nRF24L01_RxPacket ( unsigned char* rx_buf );
void nRF24L01_TxPacket ( unsigned char * tx_buf );


extern uchar const TX_ADDRESS[TX_ADR_WIDTH];//TX address
extern uchar const RX_ADDRESS[RX_ADR_WIDTH];//;RX address


#endif   //_NRF_24L01_