/*
 * @brief LPC8xx SPI driver
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

#ifndef __SPI_8XX_H_
#define __SPI_8XX_H_

#include "spi_common_8xx.h"

#ifdef __cplusplus
extern "C" {
#endif

/** @defgroup SPI_8XX CHIP: LPC8xx SPI driver
 * @ingroup CHIP_8XX_Drivers
 * @{
 */

/** @brief SPI Mode*/
typedef enum {
	SPI_MODE_MASTER = SPI_CFG_MASTER_EN,		/* Master Mode */
	SPI_MODE_SLAVE = SPI_CFG_SLAVE_EN,			/* Slave Mode */
} SPI_MODE_T;

/** @brief SPI Data Order Mode*/
typedef enum IP_SPI_DATA_ORDER {
	SPI_DATA_MSB_FIRST = SPI_CFG_MSB_FIRST_EN,			/* Standard Order */
	SPI_DATA_LSB_FIRST = SPI_CFG_LSB_FIRST_EN,			/* Reverse Order */
} SPI_DATA_ORDER_T;

/** @brief SPI SSEL Polarity definition*/
typedef enum IP_SPI_SSEL_POL {
	SPI_SSEL_ACTIVE_LO = SPI_CFG_SPOL_LO,			/* SSEL is active Low*/
	SPI_SSEL_ACTIVE_HI = SPI_CFG_SPOL_HI,			/* SSEL is active  High */
} SPI_SSEL_POL_T;

/**
 * @brief SPI Configure Struct
 */
typedef struct {
	SPI_MODE_T             Mode;			/* Mode Select */
	uint32_t               ClockMode;		/* CPHA CPOL Select */
	SPI_DATA_ORDER_T       DataOrder;		/* MSB/LSB First */
	SPI_SSEL_POL_T         SSELPol;		/* SSEL Polarity Select */
	uint16_t                ClkDiv;			/* SPI Clock Divider Value */
} SPI_CONFIG_T;

/**
 * @brief SPI Delay Configure Struct
 */
typedef struct {
	uint8_t     PreDelay;				/* Pre-delay value in SPI clock time */
	uint8_t     PostDelay;				/* Post-delay value in SPI clock time */
	uint8_t     FrameDelay;				/* Delay value between frames of a transfer in SPI clock time */
	uint8_t     TransferDelay;			/* Delay value between transfers in SPI clock time */
} SPI_DELAY_CONFIG_T;

/**
 * @brief SPI data setup structure
 */
typedef struct {
	uint16_t  *pTx;	/**< Pointer to data buffer*/
	uint32_t  TxCnt;/* Transmit Counter */
	uint16_t  *pRx;	/**< Pointer to data buffer*/
	uint32_t  RxCnt;/* Transmit Counter */
	uint32_t  Length;	/**< Data Length*/
	uint16_t  DataSize;	/** < The size of a frame (1-16)*/
} SPI_DATA_SETUP_T;

/**
 * @brief	Calculate the divider for SPI clock
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @param	bitRate	: Expected clock rate
 * @return	Divider value
 */
uint32_t Chip_SPI_CalClkRateDivider(LPC_SPI_T *pSPI, uint32_t bitRate);

/**
 * @brief	Config SPI Delay parameters
 * @param	pSPI	: The base of SPI peripheral on the chip
 * @param	pConfig	: SPI Delay Configure Struct
 * @return	 Nothing
 * @note	The SPI controller is disabled
 */
void Chip_SPI_DelayConfig(LPC_SPI_T *pSPI, SPI_DELAY_CONFIG_T *pConfig);

/**
 * @brief   Enable/Disable SPI interrupt
 * @param	pSPI			: The base SPI peripheral on the chip
 * @param	IntMask		: Interrupt mask
 * @param	NewState		: ENABLE or DISABLE interrupt
 * @return	Nothing
 */
void Chip_SPI_Int_Cmd(LPC_SPI_T *pSPI, uint32_t IntMask, FunctionalState NewState);

/**
 * @brief	Enable SPI peripheral
 * @param	pSPI	: The base of SPI peripheral on the chip
 * @return	Nothing
 */

/**
 * @brief	Enable loopback mode
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @return	Nothing
 * @note	Serial input is taken from the serial output (MOSI or MISO) rather
 * than the serial input pin
 */
STATIC INLINE void Chip_SPI_EnableLoopBack(LPC_SPI_T *pSPI)
{
	pSPI->CFG = SPI_CFG_LBM_EN | (pSPI->CFG & ~SPI_CFG_RESERVED);
}

/**
 * @brief	Disable loopback mode
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @return	Nothing
 * @note	Serial input is taken from the serial output (MOSI or MISO) rather
 * than the serial input pin
 */
STATIC INLINE void Chip_SPI_DisableLoopBack(LPC_SPI_T *pSPI)
{
	pSPI->CFG &= (~SPI_CFG_LBM_EN) & SPI_CFG_BITMASK;
}

/**
 * @brief	Set control information including SSEL, EOT, EOF RXIGNORE and FLEN
 * @param	pSPI	: The base of SPI peripheral on the chip
 * @param	Flen	: Data size (1-16)
 * @param	Flag	: Flag control (Or-ed values of SPI_TXCTL_*)
 * @note	The control information has no effect unless data is later written to TXDAT
 * @return	Nothing
 */
STATIC INLINE void Chip_SPI_SetControlInfo(LPC_SPI_T *pSPI, uint8_t Flen, uint32_t Flag)
{
	pSPI->TXCTRL = Flag | SPI_TXDATCTL_FLEN(Flen - 1);
}

/**
 * @brief	 Send the first Frame of a transfer (Rx Ignore)
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @param	Data	:  Transmit data
 * @param	DataSize	:  Data Size (1-16)
 * @return	Nothing
 */
STATIC INLINE void Chip_SPI_SendFirstFrame_RxIgnore(LPC_SPI_T *pSPI, uint16_t Data, uint8_t DataSize)
{
	pSPI->TXDATCTL = SPI_TXDATCTL_ASSERT_SSEL | SPI_TXDATCTL_EOF | SPI_TXDATCTL_RXIGNORE | SPI_TXDATCTL_FLEN(
		DataSize - 1) | SPI_TXDATCTL_DATA(Data);
}

/**
 * @brief	 Send the first Frame of a transfer
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @param	Data	:  Transmit data
 * @param	DataSize	:  Data Size (1-16)
 * @return	Nothing
 */
STATIC INLINE void Chip_SPI_SendFirstFrame(LPC_SPI_T *pSPI, uint16_t Data, uint8_t DataSize)
{
	pSPI->TXDATCTL = SPI_TXDATCTL_ASSERT_SSEL | SPI_TXDATCTL_EOF | SPI_TXDATCTL_FLEN(DataSize - 1) | SPI_TXDATCTL_DATA(
		Data);
}

/**
 * @brief	 Send the middle Frame of a transfer
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @param	Data	:  Transmit data
 * @return	Nothing
 */
STATIC INLINE void Chip_SPI_SendMidFrame(LPC_SPI_T *pSPI, uint16_t Data)
{
	pSPI->TXDAT = SPI_TXDAT_DATA(Data);
}

/**
 * @brief	 Send the last Frame of a transfer (Rx Ignore)
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @param	Data	:  Transmit data
 * @param	DataSize	:  Data Size (1-16)
 * @return	Nothing
 */
STATIC INLINE void Chip_SPI_SendLastFrame_RxIgnore(LPC_SPI_T *pSPI, uint16_t Data, uint8_t DataSize)
{
	pSPI->TXDATCTL = SPI_TXDATCTL_ASSERT_SSEL | SPI_TXDATCTL_EOF | SPI_TXDATCTL_EOT | SPI_TXDATCTL_RXIGNORE |
					 SPI_TXDATCTL_FLEN(DataSize - 1) | SPI_TXDATCTL_DATA(Data);
}

/**
 * @brief	 Send the last Frame of a transfer
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @param	Data	:  Transmit data
 * @param	DataSize	:  Data Size (1-16)
 * @return	Nothing
 */
STATIC INLINE void Chip_SPI_SendLastFrame(LPC_SPI_T *pSPI, uint16_t Data, uint8_t DataSize)
{
	pSPI->TXDATCTL = SPI_TXDATCTL_ASSERT_SSEL | SPI_TXDATCTL_EOF | SPI_TXDATCTL_EOT |
					 SPI_TXDATCTL_FLEN(DataSize - 1) | SPI_TXDATCTL_DATA(Data);
}

/**
 * @brief	 Read data received
 * @param	pSPI		: The base of SPI peripheral on the chip
 * @return	Receive data
 */
STATIC INLINE uint16_t Chip_SPI_ReceiveFrame(LPC_SPI_T *pSPI)
{
	return SPI_RXDAT_DATA(pSPI->RXDAT);
}

/**
 * @brief   SPI Interrupt Read/Write
 * @param	pSPI			: The base SPI peripheral on the chip
 * @param	xf_setup		: Pointer to a SPI_DATA_SETUP_T structure that contains specified
 *                          information about transmit/receive data	configuration
 * @return	SUCCESS or ERROR
 */
Status Chip_SPI_Int_RWFrames(LPC_SPI_T *pSPI, SPI_DATA_SETUP_T *xf_setup);

/**
 * @brief   SPI Polling Read/Write in blocking mode
 * @param	pSPI			: The base SPI peripheral on the chip
 * @param	pXfSetup		: Pointer to a SPI_DATA_SETUP_T structure that contains specified
 *                          information about transmit/receive data	configuration
 * @return	Actual data length has been transferred
 * @note
 * This function can be used in both master and slave mode. It starts with writing phase and after that,
 * a reading phase is generated to read any data available in RX_FIFO. All needed information is prepared
 * through xf_setup param.
 */
uint32_t Chip_SPI_RWFrames_Blocking(LPC_SPI_T *pSPI, SPI_DATA_SETUP_T *pXfSetup);

/**
 * @brief   SPI Polling Write in blocking mode
 * @param	pSPI			: The base SPI peripheral on the chip
 * @param	pXfSetup			:Pointer to a SPI_DATA_SETUP_T structure that contains specified
 *                          information about transmit/receive data	configuration
 * @return	Actual data length has been transferred
 * @note
 * This function can be used in both master and slave mode. First, a writing operation will send
 * the needed data. After that, a dummy reading operation is generated to clear data buffer
 */
uint32_t Chip_SPI_WriteFrames_Blocking(LPC_SPI_T *pSPI, SPI_DATA_SETUP_T *pXfSetup);

/**
 * @brief   SPI Polling Read in blocking mode
 * @param	pSPI			: The base SPI peripheral on the chip
 * @param	pXfSetup			:Pointer to a SPI_DATA_SETUP_T structure that contains specified
 *                          information about transmit/receive data	configuration
 * @return	Actual data length has been read
 * @note
 * This function can be used in both master and slave mode. First, a writing operation will send
 * the needed data. After that, a dummy reading operation is generated to clear data buffer
 */
uint32_t Chip_SPI_ReadFrames_Blocking(LPC_SPI_T *pSPI, SPI_DATA_SETUP_T *pXfSetup);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* __SPI_8XX_H_ */