/*!
 * \file      sx126x-board.h
 *
 * \brief     Target board SX126x driver implementation
 *
 * \copyright Revised BSD License, see section \ref LICENSE.
 *
 * \code
 *                ______                              _
 *               / _____)             _              | |
 *              ( (____  _____ ____ _| |_ _____  ____| |__
 *               \____ \| ___ |    (_   _) ___ |/ ___)  _ \
 *               _____) ) ____| | | || |_| ____( (___| | | |
 *              (______/|_____)_|_|_| \__)_____)\____)_| |_|
 *              (C)2013-2017 Semtech
 *
 * \endcode
 *
 * \author    Miguel Luis ( Semtech )
 *
 * \author    Gregory Cristian ( Semtech )
 */
#ifndef __SX126x_BOARD_H__
#define __SX126x_BOARD_H__

#ifdef __cplusplus
extern "C"
{
#endif

#include <stdint.h>
#include <stdbool.h>
#include "sx126x.h"

//  Below are the pin numbers for PineDio Stack BL604 with onboard SX1262.
//  TODO: Change the pin numbers for your SX1262 connection to BL602 / BL604

#define SX126X_SPI_IDX           0  //  SPI Port 0
#define SX126X_SPI_SDI_PIN       0  //  SPI Serial Data In Pin  (formerly MISO)
#define SX126X_SPI_SDO_PIN      17  //  SPI Serial Data Out Pin (formerly MOSI)
#define SX126X_SPI_CLK_PIN      11  //  SPI Clock Pin
#define SX126X_SPI_CS_PIN       15  //  SPI Chip Select Pin
#define SX126X_SPI_CS_OLD        8  //  Unused SPI Chip Select Pin
#define SX126X_NRESET           18  //  Reset Pin
#define SX126X_DIO1             19  //  DIO1
#define SX126X_BUSY_PIN         10  //  Busy Pin
#define SX126X_DEBUG_CS_PIN      5  //  Debug Chip Select Pin, mirrors the High / Low State of SX1262 Chip Select Pin. Set to -1 if not needed.
#define SX126X_TCXO_WAKEUP_TIME  5  //  Time required for the TCXO to wakeup (milliseconds)
#define SX126X_SPI_BAUDRATE  (200 * 1000)  //  SPI Frequency (200 kHz)

//  Timer definition for BL602
#include "nimble_npl.h"  //  For NimBLE Porting Layer (timer functions)
typedef struct ble_npl_callout TimerEvent_t;

///////////////////////////////////////////////////////////////////////////////
//  BL602 Functions

//  TODO: Implement critical section functions
#define CRITICAL_SECTION_BEGIN(...)
#define CRITICAL_SECTION_END(...)

/// Initialise a timer
void TimerInit(
    struct ble_npl_callout *timer,  //  The timer to initialize. Cannot be NULL.
    ble_npl_event_fn *f);           //  The timer callback function. Cannot be NULL.

/// Stops a timer from running.  Can be called even if timer is not running.
void TimerStop(
    struct ble_npl_callout *timer); //  Pointer to timer to stop. Cannot be NULL.

/// Sets a timer that will expire ‘usecs’ microseconds from the current time.
void TimerStart(
    struct ble_npl_callout *timer,  //  Pointer to timer. Cannot be NULL.
    uint32_t microsecs);            //  The number of microseconds from now at which the timer will expire.

/// Wait until ‘millisecs’ milliseconds has elapsed. This is a blocking delay.
void DelayMs(uint32_t millisecs);   //  The number of milliseconds to wait.

/// Return current time in microseconds
uint32_t TimerGetCurrentTime(void);

/// Return elased time in microseconds
uint32_t TimerGetElapsedTime(uint32_t saved_time);

///////////////////////////////////////////////////////////////////////////////

/*!
 * \brief Initializes the radio I/Os pins interface
 */
void SX126xIoInit( void );

/*!
 * \brief Initializes DIO IRQ handlers
 *
 * \param [IN] irqHandlers Array containing the IRQ callback functions
 */
void SX126xIoIrqInit( DioIrqHandler dioIrq );

/*!
 * \brief De-initializes the radio I/Os pins interface.
 *
 * \remark Useful when going in MCU low power modes
 */
void SX126xIoDeInit( void );

/*!
 * \brief Initializes the TCXO power pin.
 */
void SX126xIoTcxoInit( void );

/*!
 * \brief Initializes RF switch control pins.
 */
void SX126xIoRfSwitchInit( void );

/*!
 * \brief Initializes the radio debug pins.
 */
void SX126xIoDbgInit( void );

/*!
 * \brief HW Reset of the radio
 */
void SX126xReset( void );

/*!
 * \brief Blocking loop to wait while the Busy pin in high
 */
void SX126xWaitOnBusy( void );

/*!
 * \brief Wakes up the radio
 */
void SX126xWakeup( void );

/*!
 * \brief Send a command that write data to the radio
 *
 * \param [in]  opcode        Opcode of the command
 * \param [in]  buffer        Buffer to be send to the radio
 * \param [in]  size          Size of the buffer to send
 */
void SX126xWriteCommand( RadioCommands_t opcode, uint8_t *buffer, uint16_t size );

/*!
 * \brief Send a command that read data from the radio
 *
 * \param [in]  opcode        Opcode of the command
 * \param [out] buffer        Buffer holding data from the radio
 * \param [in]  size          Size of the buffer
 *
 * \retval status Return command radio status
 */
uint8_t SX126xReadCommand( RadioCommands_t opcode, uint8_t *buffer, uint16_t size );

/*!
 * \brief Write a single byte of data to the radio memory
 *
 * \param [in]  address       The address of the first byte to write in the radio
 * \param [in]  value         The data to be written in radio's memory
 */
void SX126xWriteRegister( uint16_t address, uint8_t value );

/*!
 * \brief Read a single byte of data from the radio memory
 *
 * \param [in]  address       The address of the first byte to write in the radio
 *
 * \retval      value         The value of the byte at the given address in radio's memory
 */
uint8_t SX126xReadRegister( uint16_t address );

/*!
 * \brief Sets the radio output power.
 *
 * \param [IN] power Sets the RF output power
 */
void SX126xSetRfTxPower( int8_t power );

/*!
 * \brief Gets the device ID
 *
 * \retval id Connected device ID
 */
uint8_t SX126xGetDeviceId( void );

/*!
 * \brief Initializes the RF Switch I/Os pins interface
 */
void SX126xAntSwOn( void );

/*!
 * \brief De-initializes the RF Switch I/Os pins interface
 *
 * \remark Needed to decrease the power consumption in MCU low power modes
 */
void SX126xAntSwOff( void );

/*!
 * \brief Checks if the given RF frequency is supported by the hardware
 *
 * \param [IN] frequency RF frequency to be checked
 * \retval isSupported [true: supported, false: unsupported]
 */
bool SX126xCheckRfFrequency( uint32_t frequency );

/*!
 * \brief Gets the Defines the time required for the TCXO to wakeup [ms].
 *
 * \retval time Board TCXO wakeup time in ms.
 */
uint32_t SX126xGetBoardTcxoWakeupTime( void );

/*!
 * \brief Gets current state of DIO1 pin state.
 *
 * \retval state DIO1 pin current state.
 */
uint32_t SX126xGetDio1PinState( void );

/*!
 * \brief Gets the current Radio OperationMode variable
 *
 * \retval      RadioOperatingModes_t last operating mode
 */
RadioOperatingModes_t SX126xGetOperatingMode( void );

/*!
 * \brief Sets/Updates the current Radio OperationMode variable.
 *
 * \remark WARNING: This function is only required to reflect the current radio
 *                  operating mode when processing interrupts.
 *
 * \param [in] mode           New operating mode
 */
void SX126xSetOperatingMode( RadioOperatingModes_t mode );

/*!
 * Radio hardware and global parameters
 */
extern SX126x_t SX126x;

#ifdef __cplusplus
}
#endif

#endif // __SX126x_BOARD_H__