/*
* ----------------------------------------------------------------------------
* “THE COFFEEWARE LICENSE” (Revision 1):
* <ihsan@kehribar.me> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a coffee in return.
* -----------------------------------------------------------------------------
* This library is based on this library: 
*   https://github.com/aaronds/arduino-nrf24l01
* Which is based on this library: 
*   http://www.tinkerer.eu/AVRLib/nRF24L01
* -----------------------------------------------------------------------------
*/
#ifndef NRF24
#define NRF24

#include "nRF24L01.h"
#include <stdint.h>
#include <avr/io.h>

// Pin definitions for chip select and chip enabled of the wl-module
#define CE  PB0
#define CSN PB1

// Definitions for selecting and enabling wl_module module
#define wl_module_CSN_hi     PORTB |=  (1<<CSN);
#define wl_module_CSN_lo     PORTB &= ~(1<<CSN);
#define wl_module_CE_hi      PORTB |=  (1<<CE);
#define wl_module_CE_lo      PORTB &= ~(1<<CE);
/* ------------------------------------------------------------------------- */

#define nrf24_ADDR_LEN 5
#define nrf24_CONFIG ((1<<EN_CRC)|(0<<CRCO))

#define NRF24_TRANSMISSON_OK 0
#define NRF24_MESSAGE_LOST   1

/* adjustment functions */
void    nrf24_init();
void    nrf24_rx_address(uint8_t* adr);
void    nrf24_tx_address(uint8_t* adr);
void    nrf24_config(uint8_t channel, uint8_t pay_length);

/* state check functions */
uint8_t nrf24_dataReady();
uint8_t nrf24_isSending();
uint8_t nrf24_getStatus();
uint8_t nrf24_rxFifoEmpty();

/* core TX / RX functions */
void    nrf24_send(uint8_t* value);
void    nrf24_getData(uint8_t* data);

/* use in dynamic length mode */
uint8_t nrf24_payloadLength();

/* post transmission analysis */
uint8_t nrf24_lastMessageStatus();
uint8_t nrf24_retransmissionCount();

/* Returns the payload length */
uint8_t nrf24_payload_length();

/* power management */
void    nrf24_powerUpRx();
void    nrf24_powerUpTx();
void    nrf24_powerDown();

/* low level interface ... */
extern void	   spi_init();
extern uint8_t spi_fast_shift(uint8_t tx);
extern void    spi_transmit_sync(uint8_t* dataout,uint8_t len);
extern void    spi_transfer_sync(uint8_t* dataout,uint8_t* datain,uint8_t len);
void    nrf24_configRegister(uint8_t reg, uint8_t value);
void    nrf24_readRegister(uint8_t reg, uint8_t* value, uint8_t len);
void    nrf24_writeRegister(uint8_t reg, uint8_t* value, uint8_t len);

/* -------------------------------------------------------------------------- */

#endif