/*
 / _____)             _              | |
( (____  _____ ____ _| |_ _____  ____| |__
 \____ \| ___ |    (_   _) ___ |/ ___)  _ \
 _____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
    (C)2014 Semtech

Description: sx1208 dirver

License: Revised BSD License, see LICENSE.TXT file include in the project

Maintainer: Leo Xie, Jiapeng Li
*/

#ifndef __SX1208_H
#define __SX1208_H

#include "sx1208-reg.h"
#include "stdint.h"
#include "stdbool.h"

#define SX1208_FXOSC				(32000000ul)
/** Fstep = FXOSC/(2^19) */
#define SX1208_FREQ_STEP	  ((double)SX1208_FXOSC/((double)((uint32_t)1<<19)))

typedef enum{
	SX1208_PROTOCOL_NONE = 0,
	SX1208_PROTOCOL_STATE_GRID,
}sx1208_protocol_t;

typedef enum{
	SX1208_TX_DONE,
	SX1208_RX_DONE,
	SX1208_TX_TIMEOUT,
	SX1208_RX_TIMEOUT,
	SX1208_RX_ERROR,
}sx1208_event_t;

typedef struct{
	uint8_t *buf;
	uint8_t len;
	uint8_t raw_rssi;
}sx1208_rx_pkt_t;

typedef void (*sx1208_callback_t)(sx1208_event_t, void *);

typedef enum{
	SX1208_HEADER_ENABLE,
	SX1208_HEADER_DISABLE,
}sx1208_header_mode_t;

typedef enum{
	SX1208_CRC_ON,
	SX1208_CRC_OFF,
}sx1208_crc_mode_t;

typedef enum{
	SX1208_CRC_AUTO_CLEAR_ON,
	SX1208_CRC_AUTO_CLEAR_OFF,
}sx1208_crc_auto_clear_t;

typedef enum{
	SX1208_TX_PREAMBLE,
	SX1208_RX_PREAMBLE,
}sx1208_preamble_t;

typedef enum{
	SX1208_RXTX_TXHIGH,
	SX1208_RXTX_TXLOW,		// same as SX1208_RXTX_RXHIGH
	SX1208_RXTX_RXHIGH,
	SX1208_RXTX_RXLOW,		// same as SX1208_RXTX_TXHIGH
}sx1208_txtx_polarity_t;

typedef struct{
	sx1208_protocol_t protocol;

	uint32_t frf;
	uint32_t fdev;
	uint32_t bitrate;

	sx1208_crc_mode_t crc_mode;
	sx1208_header_mode_t header_mode;
	uint8_t payload_len;		// Set value when header is disabled

	int8_t tx_power;

	/** preamble length */
	uint16_t tx_preamble_len;
	uint16_t rx_preamble_len;

	uint8_t sync_word_len;
	uint8_t sync_word[8];
}sx1208_config_t;
typedef struct{
	uint8_t addr;
	uint8_t value;
}sx1208_params_unit_t;

typedef enum{
	SX1208_MODE_SLEEP = 0x00,
	SX1208_MODE_STANDBY = 0x04,
	SX1208_MODE_FS = 0x08,			// Frequency synthesizer
	SX1208_MODE_TX = 0x0C,
	SX1208_MODE_RX = 0x10,
}sx1208_mode_t;

typedef void (*hal_sx1208_irq_callback_t) (void);

typedef enum{
	SX1208_DIO0 = 0,
	SX1208_DIO1,
	SX1208_DIO2,
	SX1208_DIO3,
	SX1208_DIO4,
	SX1208_DIO5,
}sx1208_dio_t;

typedef enum{
	SX1208_RF_SWITCH_IDLE,		//LOW POWER MODE
	SX1208_RF_SWITCH_RX,
	SX1208_RF_SWITCH_TX,
}sx1208_rf_switch_mode_t;

typedef enum{
	/* SX1208 use RFIO as output. */
	SX1208_TX_PORT_RFIO,
	SX1208_TX_PORT_PA_BOOST,
}sx1208_tx_port_t;

void sx1208_init(sx1208_callback_t sx1208_cb);

void sx1208_set_config(sx1208_config_t *config);
int8_t sx1208_send(uint8_t *buf, uint8_t len, uint16_t timeout);
void sx1208_receive(uint8_t *buf, uint8_t len, uint16_t timeout);
void sx1208_onDioIrq( void );
void sx1208_process(void);
void sx1208_set_frf( uint32_t frf );
void sx1208_set_fdev( uint32_t fdev );
void sx1208_set_bitrate( uint32_t br );
void sx1208_set_rxbw(uint32_t fdev, uint32_t br);
void sx1208_set_tx_power( int8_t pow );
void sx1208_set_sync_word(uint8_t *sync_word, uint8_t len);
void sx1208_set_header_mode(sx1208_header_mode_t hdr_mode);
void sx1208_set_crc_mode(sx1208_crc_mode_t crc_mode);
void sx1208_set_preamble(sx1208_preamble_t preamble_type, uint16_t len);
uint8_t sx1208_read_rssi(void);

/** RX test mode */
void sx1208_rx_test_mode(void);
void sx1208_tx_test_mode(void);
/** For test purpose */
uint8_t sx1208_read(uint8_t addr);
void sx1208_write(uint8_t addr, uint8_t data);
void sx1208_rmw(uint8_t addr, uint8_t mask, uint8_t val);
void sx1208_rmw_bit(uint8_t addr, uint8_t bit, uint8_t val);
void sx1208_read_burst(uint8_t addr, uint8_t *buf, uint16_t len);
void sx1208_write_burst(uint8_t addr, uint8_t *buf, uint16_t len);
int sx1208_read_fifo(uint8_t *buf, uint16_t len);
int sx1208_write_fifo(uint8_t *buf, uint16_t len);
void sx1208_initParams(void);
#endif