rt-thread/bsp/nxp/lpc/lpc178x/drivers/lpc177x_8x_uart.h

/**********************************************************************
* $Id$      lpc177x_8x_uart.h           2011-06-02
*//**
* @file     lpc177x_8x_uart.h
* @brief    Contains all macro definitions and function prototypes
*           support for UART firmware library on LPC177x_8x
* @version  1.0
* @date     02. June. 2011
* @author   NXP MCU SW Application Team
*
* Copyright(C) 2011, NXP Semiconductor
* All rights reserved.
*
***********************************************************************
* Software that is described herein is for illustrative purposes only
* which provides customers with programming information regarding the
* products. This software is supplied "AS IS" without any warranties.
* NXP Semiconductors assumes no responsibility or liability for the
* use of the software, conveys no license or title under any patent,
* copyright, or mask work right to the product. NXP Semiconductors
* reserves the right to make changes in the software without
* notification. NXP Semiconductors also make no representation or
* warranty that such application will be suitable for the specified
* use without further testing or modification.
**********************************************************************/

/* Peripheral group ----------------------------------------------------------- */
/** @defgroup UART  UART (Universal Asynchronous Receiver/Transmitter)
 * @ingroup LPC177x_8xCMSIS_FwLib_Drivers
 * @{
 */

#ifndef __LPC177X_8X_UART_H_
#define __LPC177X_8X_UART_H_

/* Includes ------------------------------------------------------------------- */
#include "LPC177x_8x.h"
#include "lpc_types.h"


#ifdef __cplusplus
extern "C"
{
#endif

/* Public Macros -------------------------------------------------------------- */
/** @defgroup UART_Public_Macros  UART Public Macros
 * @{
 */

/** UART time-out definitions in case of using Read() and Write function
 * with Blocking Flag mode
 */
#define UART_BLOCKING_TIMEOUT           (0xFFFFFFFFUL)

/**
 * @}
 */

/* Private Macros ------------------------------------------------------------- */
/** @defgroup UART_Private_Macros UART Private Macros
 * @{
 */

/* Accepted Error baud rate value (in percent unit) */
#define UART_ACCEPTED_BAUDRATE_ERROR    (3)         /*!< Acceptable UART baudrate error */


/* --------------------- BIT DEFINITIONS -------------------------------------- */
/*********************************************************************//**
 * Macro defines for Macro defines for UARTn Receiver Buffer Register
 **********************************************************************/
/** UART Received Buffer mask bit (8 bits) */
#define UART_RBR_MASKBIT    ((uint8_t)0xFF)

/*********************************************************************//**
 * Macro defines for Macro defines for UARTn Transmit Holding Register
 **********************************************************************/
/** UART Transmit Holding mask bit (8 bits) */
#define UART_THR_MASKBIT    ((uint8_t)0xFF)

/*********************************************************************//**
 * Macro defines for Macro defines for UARTn Divisor Latch LSB register
 **********************************************************************/
/** Macro for loading least significant halfs of divisors */
#define UART_LOAD_DLL(div)  ((div) & 0xFF)
/** Divisor latch LSB bit mask */
#define UART_DLL_MASKBIT    ((uint8_t)0xFF)

/*********************************************************************//**
 * Macro defines for Macro defines for UARTn Divisor Latch MSB register
 **********************************************************************/
/** Divisor latch MSB bit mask */
#define UART_DLM_MASKBIT    ((uint8_t)0xFF)
/** Macro for loading most significant halfs of divisors */
#define UART_LOAD_DLM(div)  (((div) >> 8) & 0xFF)

/*********************************************************************//**
 * Macro defines for Macro defines for UART interrupt enable register
 **********************************************************************/
/** RBR Interrupt enable*/
#define UART_IER_RBRINT_EN      ((uint32_t)(1<<0))
/** THR Interrupt enable*/
#define UART_IER_THREINT_EN     ((uint32_t)(1<<1))
/** RX line status interrupt enable*/
#define UART_IER_RLSINT_EN      ((uint32_t)(1<<2))
/** Modem status interrupt enable */
#define UART1_IER_MSINT_EN      ((uint32_t)(1<<3))
/** CTS1 signal transition interrupt enable */
#define UART1_IER_CTSINT_EN     ((uint32_t)(1<<7))
/** Enables the end of auto-baud interrupt */
#define UART_IER_ABEOINT_EN     ((uint32_t)(1<<8))
/** Enables the auto-baud time-out interrupt */
#define UART_IER_ABTOINT_EN     ((uint32_t)(1<<9))
/** UART interrupt enable register bit mask */
#define UART_IER_BITMASK        ((uint32_t)(0x307))
/** UART1 interrupt enable register bit mask */
#define UART1_IER_BITMASK       ((uint32_t)(0x38F))

/*********************************************************************//**
 * Macro defines for Macro defines for UART interrupt identification register
 **********************************************************************/
/** Interrupt Status - Active low */
#define UART_IIR_INTSTAT_PEND   ((uint32_t)(1<<0))
/** Interrupt identification: Receive line status*/
#define UART_IIR_INTID_RLS      ((uint32_t)(3<<1))
/** Interrupt identification: Receive data available*/
#define UART_IIR_INTID_RDA      ((uint32_t)(2<<1))
/** Interrupt identification: Character time-out indicator*/
#define UART_IIR_INTID_CTI      ((uint32_t)(6<<1))
/** Interrupt identification: THRE interrupt*/
#define UART_IIR_INTID_THRE     ((uint32_t)(1<<1))
/** Interrupt identification: Modem interrupt*/
#define UART1_IIR_INTID_MODEM   ((uint32_t)(0<<1))
/** Interrupt identification: Interrupt ID mask */
#define UART_IIR_INTID_MASK     ((uint32_t)(7<<1))
/** These bits are equivalent to UnFCR[0] */
#define UART_IIR_FIFO_EN        ((uint32_t)(3<<6))
/** End of auto-baud interrupt */
#define UART_IIR_ABEO_INT       ((uint32_t)(1<<8))
/** Auto-baud time-out interrupt */
#define UART_IIR_ABTO_INT       ((uint32_t)(1<<9))
/** UART interrupt identification register bit mask */
#define UART_IIR_BITMASK        ((uint32_t)(0x3CF))

/*********************************************************************//**
 * Macro defines for Macro defines for UART FIFO control register
 **********************************************************************/
/** UART FIFO enable */
#define UART_FCR_FIFO_EN        ((uint8_t)(1<<0))
/** UART FIFO RX reset */
#define UART_FCR_RX_RS          ((uint8_t)(1<<1))
/** UART FIFO TX reset */
#define UART_FCR_TX_RS          ((uint8_t)(1<<2))
/** UART DMA mode selection */
#define UART_FCR_DMAMODE_SEL    ((uint8_t)(1<<3))
/** UART FIFO trigger level 0: 1 character */
#define UART_FCR_TRG_LEV0       ((uint8_t)(0))
/** UART FIFO trigger level 1: 4 character */
#define UART_FCR_TRG_LEV1       ((uint8_t)(1<<6))
/** UART FIFO trigger level 2: 8 character */
#define UART_FCR_TRG_LEV2       ((uint8_t)(2<<6))
/** UART FIFO trigger level 3: 14 character */
#define UART_FCR_TRG_LEV3       ((uint8_t)(3<<6))
/** UART FIFO control bit mask */
#define UART_FCR_BITMASK        ((uint8_t)(0xCF))

#define UART_TX_FIFO_SIZE       (16)

/*********************************************************************//**
 * Macro defines for Macro defines for UART line control register
 **********************************************************************/
/** UART 5 bit data mode */
#define UART_LCR_WLEN5          ((uint8_t)(0))
/** UART 6 bit data mode */
#define UART_LCR_WLEN6          ((uint8_t)(1<<0))
/** UART 7 bit data mode */
#define UART_LCR_WLEN7          ((uint8_t)(2<<0))
/** UART 8 bit data mode */
#define UART_LCR_WLEN8          ((uint8_t)(3<<0))
/** UART Two Stop Bits Select */
#define UART_LCR_STOPBIT_SEL    ((uint8_t)(1<<2))
/** UART Parity Enable */
#define UART_LCR_PARITY_EN      ((uint8_t)(1<<3))
/** UART Odd Parity Select */
#define UART_LCR_PARITY_ODD     ((uint8_t)(0))
/** UART Even Parity Select */
#define UART_LCR_PARITY_EVEN    ((uint8_t)(1<<4))
/** UART force 1 stick parity */
#define UART_LCR_PARITY_F_1     ((uint8_t)(2<<4))
/** UART force 0 stick parity */
#define UART_LCR_PARITY_F_0     ((uint8_t)(3<<4))
/** UART Transmission Break enable */
#define UART_LCR_BREAK_EN       ((uint8_t)(1<<6))
/** UART Divisor Latches Access bit enable */
#define UART_LCR_DLAB_EN        ((uint8_t)(1<<7))
/** UART line control bit mask */
#define UART_LCR_BITMASK        ((uint8_t)(0xFF))

/*********************************************************************//**
 * Macro defines for Macro defines for UART1 Modem Control Register
 **********************************************************************/
/** Source for modem output pin DTR */
#define UART1_MCR_DTR_CTRL      ((uint8_t)(1<<0))
/** Source for modem output pin RTS */
#define UART1_MCR_RTS_CTRL      ((uint8_t)(1<<1))
/** Loop back mode select */
#define UART1_MCR_LOOPB_EN      ((uint8_t)(1<<4))
/** Enable Auto RTS flow-control */
#define UART1_MCR_AUTO_RTS_EN   ((uint8_t)(1<<6))
/** Enable Auto CTS flow-control */
#define UART1_MCR_AUTO_CTS_EN   ((uint8_t)(1<<7))
/** UART1 bit mask value */
#define UART1_MCR_BITMASK       ((uint8_t)(0x0F3))

/*********************************************************************//**
 * Macro defines for Macro defines for UART line status register
 **********************************************************************/
/** Line status register: Receive data ready*/
#define UART_LSR_RDR        ((uint8_t)(1<<0))
/** Line status register: Overrun error*/
#define UART_LSR_OE         ((uint8_t)(1<<1))
/** Line status register: Parity error*/
#define UART_LSR_PE         ((uint8_t)(1<<2))
/** Line status register: Framing error*/
#define UART_LSR_FE         ((uint8_t)(1<<3))
/** Line status register: Break interrupt*/
#define UART_LSR_BI         ((uint8_t)(1<<4))
/** Line status register: Transmit holding register empty*/
#define UART_LSR_THRE       ((uint8_t)(1<<5))
/** Line status register: Transmitter empty*/
#define UART_LSR_TEMT       ((uint8_t)(1<<6))
/** Error in RX FIFO*/
#define UART_LSR_RXFE       ((uint8_t)(1<<7))
/** UART Line status bit mask */
#define UART_LSR_BITMASK    ((uint8_t)(0xFF))

/*********************************************************************//**
 * Macro defines for Macro defines for UART Modem (UART1 only) status register
 **********************************************************************/
/** Set upon state change of input CTS */
#define UART1_MSR_DELTA_CTS     ((uint8_t)(1<<0))
/** Set upon state change of input DSR */
#define UART1_MSR_DELTA_DSR     ((uint8_t)(1<<1))
/** Set upon low to high transition of input RI */
#define UART1_MSR_LO2HI_RI      ((uint8_t)(1<<2))
/** Set upon state change of input DCD */
#define UART1_MSR_DELTA_DCD     ((uint8_t)(1<<3))
/** Clear To Send State */
#define UART1_MSR_CTS           ((uint8_t)(1<<4))
/** Data Set Ready State */
#define UART1_MSR_DSR           ((uint8_t)(1<<5))
/** Ring Indicator State */
#define UART1_MSR_RI            ((uint8_t)(1<<6))
/** Data Carrier Detect State */
#define UART1_MSR_DCD           ((uint8_t)(1<<7))
/** MSR register bit-mask value */
#define UART1_MSR_BITMASK       ((uint8_t)(0xFF))

/*********************************************************************//**
 * Macro defines for Macro defines for UART Scratch Pad Register
 **********************************************************************/
/** UART Scratch Pad bit mask */
#define UART_SCR_BIMASK     ((uint8_t)(0xFF))

/*********************************************************************//**
 * Macro defines for Macro defines for UART Auto baudrate control register
 **********************************************************************/
/** UART Auto-baud start */
#define UART_ACR_START              ((uint32_t)(1<<0))
/** UART Auto baudrate Mode 1 */
#define UART_ACR_MODE               ((uint32_t)(1<<1))
/** UART Auto baudrate restart */
#define UART_ACR_AUTO_RESTART       ((uint32_t)(1<<2))
/** UART End of auto-baud interrupt clear */
#define UART_ACR_ABEOINT_CLR        ((uint32_t)(1<<8))
/** UART Auto-baud time-out interrupt clear */
#define UART_ACR_ABTOINT_CLR        ((uint32_t)(1<<9))
/** UART Auto Baudrate register bit mask */
#define UART_ACR_BITMASK            ((uint32_t)(0x307))

/*********************************************************************//**
 * Macro defines for Macro defines for UART IrDA control register
 **********************************************************************/
/** IrDA mode enable */
#define UART_ICR_IRDAEN         ((uint32_t)(1<<0))
/** IrDA serial input inverted */
#define UART_ICR_IRDAINV        ((uint32_t)(1<<1))
/** IrDA fixed pulse width mode */
#define UART_ICR_FIXPULSE_EN    ((uint32_t)(1<<2))
/** PulseDiv - Configures the pulse when FixPulseEn = 1 */
#define UART_ICR_PULSEDIV(n)    ((uint32_t)((n&0x07)<<3))
/** UART IRDA bit mask */
#define UART_ICR_BITMASK        ((uint32_t)(0x3F))

/*********************************************************************//**
 * Macro defines for Macro defines for UART Fractional divider register
 **********************************************************************/
/** Baud-rate generation pre-scaler divisor */
#define UART_FDR_DIVADDVAL(n)   ((uint32_t)(n&0x0F))
/** Baud-rate pre-scaler multiplier value */
#define UART_FDR_MULVAL(n)      ((uint32_t)((n<<4)&0xF0))
/** UART Fractional Divider register bit mask */
#define UART_FDR_BITMASK        ((uint32_t)(0xFF))

/*********************************************************************//**
 * Macro defines for Macro defines for UART Tx Enable register
 **********************************************************************/
/** Transmit enable bit */
#define UART_TER_TXEN           ((uint8_t)(1<<7))
/** UART Transmit Enable Register bit mask */
#define UART_TER_BITMASK        ((uint8_t)(0x80))

/*********************************************************************//**
 * Macro defines for Macro defines for UART1 RS485 Control register
 **********************************************************************/
/** RS-485/EIA-485 Normal Multi-drop Mode (NMM) is disabled */
#define UART1_RS485CTRL_NMM_EN      ((uint32_t)(1<<0))
/** The receiver is disabled */
#define UART1_RS485CTRL_RX_DIS      ((uint32_t)(1<<1))
/** Auto Address Detect (AAD) is enabled */
#define UART1_RS485CTRL_AADEN       ((uint32_t)(1<<2))
/** If direction control is enabled (bit DCTRL = 1), pin DTR is used for direction control */
#define UART1_RS485CTRL_SEL_DTR     ((uint32_t)(1<<3))
/** Enable Auto Direction Control */
#define UART1_RS485CTRL_DCTRL_EN    ((uint32_t)(1<<4))
/** This bit reverses the polarity of the direction control signal on the RTS (or DTR) pin.
The direction control pin will be driven to logic "1" when the transmitter has data to be sent */
#define UART1_RS485CTRL_OINV_1      ((uint32_t)(1<<5))

/** RS485 control bit-mask value */
#define UART1_RS485CTRL_BITMASK     ((uint32_t)(0x3F))

/*********************************************************************//**
 * Macro defines for Macro defines for UART1 RS-485 Address Match register
 **********************************************************************/
#define UART1_RS485ADRMATCH_BITMASK ((uint8_t)(0xFF))   /**< Bit mask value */

/*********************************************************************//**
 * Macro defines for Macro defines for UART1 RS-485 Delay value register
 **********************************************************************/
/* Macro defines for UART1 RS-485 Delay value register */
#define UART1_RS485DLY_BITMASK      ((uint8_t)(0xFF))   /** Bit mask value */

/*********************************************************************//**
 * Macro defines for Macro defines for UART FIFO Level register
 **********************************************************************/
/** Reflects the current level of the UART receiver FIFO */
#define UART_FIFOLVL_RXFIFOLVL(n)   ((uint32_t)(n&0x0F))
/** Reflects the current level of the UART transmitter FIFO */
#define UART_FIFOLVL_TXFIFOLVL(n)   ((uint32_t)((n>>8)&0x0F))
/** UART FIFO Level Register bit mask */
#define UART_FIFOLVL_BITMASK        ((uint32_t)(0x0F0F))


/**
 * @}
 */


/* Public Types --------------------------------------------------------------- */
/** @defgroup UART_Public_Types UART Public Types
 * @{
 */

/**
 * @brief UART Databit type definitions
 */
typedef enum {
    UART_DATABIT_5      = 0,            /*!< UART 5 bit data mode */
    UART_DATABIT_6,                     /*!< UART 6 bit data mode */
    UART_DATABIT_7,                     /*!< UART 7 bit data mode */
    UART_DATABIT_8                      /*!< UART 8 bit data mode */
} UART_DATABIT_Type;

/**
 * @brief UART Stop bit type definitions
 */
typedef enum {
    UART_STOPBIT_1      = (0),                      /*!< UART 1 Stop Bits Select */
    UART_STOPBIT_2,                                 /*!< UART Two Stop Bits Select */
} UART_STOPBIT_Type;

/**
 * @brief UART Parity type definitions
 */
typedef enum {
    UART_PARITY_NONE    = 0,                    /*!< No parity */
    UART_PARITY_ODD,                            /*!< Odd parity */
    UART_PARITY_EVEN,                           /*!< Even parity */
    UART_PARITY_SP_1,                           /*!< Forced "1" stick parity */
    UART_PARITY_SP_0                            /*!< Forced "0" stick parity */
} UART_PARITY_Type;

/**
 * @brief FIFO Level type definitions
 */
typedef enum {
    UART_FIFO_TRGLEV0 = 0,  /*!< UART FIFO trigger level 0: 1 character */
    UART_FIFO_TRGLEV1,      /*!< UART FIFO trigger level 1: 4 character */
    UART_FIFO_TRGLEV2,      /*!< UART FIFO trigger level 2: 8 character */
    UART_FIFO_TRGLEV3       /*!< UART FIFO trigger level 3: 14 character */
} UART_FITO_LEVEL_Type;

/********************************************************************//**
* @brief UART Interrupt Type definitions
**********************************************************************/
typedef enum {
    UART_INTCFG_RBR = 0,    /*!< RBR Interrupt enable*/
    UART_INTCFG_THRE,       /*!< THR Interrupt enable*/
    UART_INTCFG_RLS,        /*!< RX line status interrupt enable*/
    UART1_INTCFG_MS,        /*!< Modem status interrupt enable (UART1 only) */
    UART1_INTCFG_CTS,       /*!< CTS1 signal transition interrupt enable (UART1 only) */
    UART_INTCFG_ABEO,       /*!< Enables the end of auto-baud interrupt */
    UART_INTCFG_ABTO        /*!< Enables the auto-baud time-out interrupt */
} UART_INT_Type;

/**
 * @brief UART Line Status Type definition
 */
typedef enum {
    UART_LINESTAT_RDR   = UART_LSR_RDR,         /*!<Line status register: Receive data ready*/
    UART_LINESTAT_OE    = UART_LSR_OE,          /*!<Line status register: Overrun error*/
    UART_LINESTAT_PE    = UART_LSR_PE,          /*!<Line status register: Parity error*/
    UART_LINESTAT_FE    = UART_LSR_FE,          /*!<Line status register: Framing error*/
    UART_LINESTAT_BI    = UART_LSR_BI,          /*!<Line status register: Break interrupt*/
    UART_LINESTAT_THRE  = UART_LSR_THRE,        /*!<Line status register: Transmit holding register empty*/
    UART_LINESTAT_TEMT  = UART_LSR_TEMT,        /*!<Line status register: Transmitter empty*/
    UART_LINESTAT_RXFE  = UART_LSR_RXFE         /*!<Error in RX FIFO*/
} UART_LS_Type;

/**
 * @brief UART Auto-baudrate mode type definition
 */
typedef enum {
    UART_AUTOBAUD_MODE0             = 0,            /**< UART Auto baudrate Mode 0 */
    UART_AUTOBAUD_MODE1,                            /**< UART Auto baudrate Mode 1 */
} UART_AB_MODE_Type;

/**
 * @brief Auto Baudrate mode configuration type definition
 */
typedef struct {
    UART_AB_MODE_Type   ABMode;         /**< Autobaudrate mode */
    FunctionalState     AutoRestart;    /**< Auto Restart state */
} UART_AB_CFG_Type;

/**
 * @brief UART End of Auto-baudrate type definition
 */
typedef enum {
    UART_AUTOBAUD_INTSTAT_ABEO      = UART_IIR_ABEO_INT,        /**< UART End of auto-baud interrupt  */
    UART_AUTOBAUD_INTSTAT_ABTO      = UART_IIR_ABTO_INT         /**< UART Auto-baud time-out interrupt  */
}UART_ABEO_Type;

/**
 * UART IrDA Control type Definition
 */
typedef enum
{
    /** Pulse width = 2 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV2     = 0,

    /** Pulse width = 4 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV4,

    /** Pulse width = 8 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV8,

    /** Pulse width = 16 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV16,

    /** Pulse width = 32 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV32,

    /**< Pulse width = 64 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV64,

    /**< Pulse width = 128 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV128,

    /**< Pulse width = 256 * Tpclk
    - Configures the pulse when FixPulseEn = 1 */
    UART_IrDA_PULSEDIV256
} UART_IrDA_PULSE_Type;

/********************************************************************//**
* @brief UART1 Full modem -  Signal states definition
**********************************************************************/
typedef enum {
    INACTIVE = 0,           /* In-active state */
    ACTIVE = !INACTIVE      /* Active state */
}UART1_SignalState;

/**
 * @brief UART modem status type definition
 */
typedef enum {
    UART1_MODEM_STAT_DELTA_CTS  = UART1_MSR_DELTA_CTS,      /*!< Set upon state change of input CTS */
    UART1_MODEM_STAT_DELTA_DSR  = UART1_MSR_DELTA_DSR,      /*!< Set upon state change of input DSR */
    UART1_MODEM_STAT_LO2HI_RI   = UART1_MSR_LO2HI_RI,       /*!< Set upon low to high transition of input RI */
    UART1_MODEM_STAT_DELTA_DCD  = UART1_MSR_DELTA_DCD,      /*!< Set upon state change of input DCD */
    UART1_MODEM_STAT_CTS        = UART1_MSR_CTS,            /*!< Clear To Send State */
    UART1_MODEM_STAT_DSR        = UART1_MSR_DSR,            /*!< Data Set Ready State */
    UART1_MODEM_STAT_RI         = UART1_MSR_RI,             /*!< Ring Indicator State */
    UART1_MODEM_STAT_DCD        = UART1_MSR_DCD             /*!< Data Carrier Detect State */
} UART_MODEM_STAT_type;

/**
 * @brief Modem output pin type definition
 */
typedef enum {
    UART1_MODEM_PIN_DTR         = 0,        /*!< Source for modem output pin DTR */
    UART1_MODEM_PIN_RTS                     /*!< Source for modem output pin RTS */
} UART_MODEM_PIN_Type;

/**
 * @brief UART Modem mode type definition
 */
typedef enum {
    UART1_MODEM_MODE_LOOPBACK   = 0,        /*!< Loop back mode select */
    UART1_MODEM_MODE_AUTO_RTS,              /*!< Enable Auto RTS flow-control */
    UART1_MODEM_MODE_AUTO_CTS               /*!< Enable Auto CTS flow-control */
} UART_MODEM_MODE_Type;

/**
 * @brief UART Direction Control Pin type definition
 */
typedef enum {
    UART1_RS485_DIRCTRL_RTS = 0,    /**< Pin RTS is used for direction control */
    UART1_RS485_DIRCTRL_DTR         /**< Pin DTR is used for direction control */
} UART_RS485_DIRCTRL_PIN_Type;

/********************************************************************//**
* @brief UART Configuration Structure definition
**********************************************************************/
typedef struct {
  uint32_t Baud_rate;           /**< UART baud rate */
  UART_PARITY_Type Parity;      /**< Parity selection, should be:
                               - UART_PARITY_NONE: No parity
                               - UART_PARITY_ODD: Odd parity
                               - UART_PARITY_EVEN: Even parity
                               - UART_PARITY_SP_1: Forced "1" stick parity
                               - UART_PARITY_SP_0: Forced "0" stick parity
                               */
  UART_DATABIT_Type Databits;   /**< Number of data bits, should be:
                               - UART_DATABIT_5: UART 5 bit data mode
                               - UART_DATABIT_6: UART 6 bit data mode
                               - UART_DATABIT_7: UART 7 bit data mode
                               - UART_DATABIT_8: UART 8 bit data mode
                               */
  UART_STOPBIT_Type Stopbits;   /**< Number of stop bits, should be:
                               - UART_STOPBIT_1: UART 1 Stop Bits Select
                               - UART_STOPBIT_2: UART 2 Stop Bits Select
                               */
} UART_CFG_Type;

/********************************************************************//**
* @brief UART FIFO Configuration Structure definition
**********************************************************************/

typedef struct {
    FunctionalState FIFO_ResetRxBuf;    /**< Reset Rx FIFO command state , should be:
                                         - ENABLE: Reset Rx FIFO in UART
                                         - DISABLE: Do not reset Rx FIFO  in UART
                                         */
    FunctionalState FIFO_ResetTxBuf;    /**< Reset Tx FIFO command state , should be:
                                         - ENABLE: Reset Tx FIFO in UART
                                         - DISABLE: Do not reset Tx FIFO  in UART
                                         */
    FunctionalState FIFO_DMAMode;       /**< DMA mode, should be:
                                         - ENABLE: Enable DMA mode in UART
                                         - DISABLE: Disable DMA mode in UART
                                         */
    UART_FITO_LEVEL_Type FIFO_Level;    /**< Rx FIFO trigger level, should be:
                                        - UART_FIFO_TRGLEV0: UART FIFO trigger level 0: 1 character
                                        - UART_FIFO_TRGLEV1: UART FIFO trigger level 1: 4 character
                                        - UART_FIFO_TRGLEV2: UART FIFO trigger level 2: 8 character
                                        - UART_FIFO_TRGLEV3: UART FIFO trigger level 3: 14 character
                                        */
} UART_FIFO_CFG_Type;

/********************************************************************//**
* @brief UART1 Full modem -  RS485 Control configuration type
**********************************************************************/
typedef struct {
    FunctionalState NormalMultiDropMode_State; /*!< Normal MultiDrop mode State:
                                                    - ENABLE: Enable this function.
                                                    - DISABLE: Disable this function. */
    FunctionalState Rx_State;                   /*!< Receiver State:
                                                    - ENABLE: Enable Receiver.
                                                    - DISABLE: Disable Receiver. */
    FunctionalState AutoAddrDetect_State;       /*!< Auto Address Detect mode state:
                                                - ENABLE: ENABLE this function.
                                                - DISABLE: Disable this function. */
    FunctionalState AutoDirCtrl_State;          /*!< Auto Direction Control State:
                                                - ENABLE: Enable this function.
                                                - DISABLE: Disable this function. */
    UART_RS485_DIRCTRL_PIN_Type DirCtrlPin;     /*!< If direction control is enabled, state:
                                                - UART1_RS485_DIRCTRL_RTS:
                                                pin RTS is used for direction control.
                                                - UART1_RS485_DIRCTRL_DTR:
                                                pin DTR is used for direction control. */
     SetState DirCtrlPol_Level;                 /*!< Polarity of the direction control signal on
                                                the RTS (or DTR) pin:
                                                - RESET: The direction control pin will be driven
                                                to logic "0" when the transmitter has data to be sent.
                                                - SET: The direction control pin will be driven
                                                to logic "1" when the transmitter has data to be sent. */
    uint8_t MatchAddrValue;                 /*!< address match value for RS-485/EIA-485 mode, 8-bit long */
    uint8_t DelayValue;                     /*!< delay time is in periods of the baud clock, 8-bit long */
} UART1_RS485_CTRLCFG_Type;

/**
 * @}
 */


/* Public Functions ----------------------------------------------------------- */
/** @defgroup UART_Public_Functions UART Public Functions
 * @{
 */
/* UART Init/DeInit functions --------------------------------------------------*/
void UART_Init(LPC_UART_TypeDef *UARTx, UART_CFG_Type *UART_ConfigStruct);
void UART_DeInit(LPC_UART_TypeDef* UARTx);
void UART_ConfigStructInit(UART_CFG_Type *UART_InitStruct);

/* UART Send/Receive functions -------------------------------------------------*/
void UART_SendByte(LPC_UART_TypeDef* UARTx, uint8_t Data);
uint8_t UART_ReceiveByte(LPC_UART_TypeDef* UARTx);
uint32_t UART_Send(LPC_UART_TypeDef *UARTx, uint8_t *txbuf,
        uint32_t buflen, TRANSFER_BLOCK_Type flag);
uint32_t UART_Receive(LPC_UART_TypeDef *UARTx, uint8_t *rxbuf, \
        uint32_t buflen, TRANSFER_BLOCK_Type flag);

/* UART FIFO functions ----------------------------------------------------------*/
void UART_FIFOConfig(LPC_UART_TypeDef *UARTx, UART_FIFO_CFG_Type *FIFOCfg);
void UART_FIFOConfigStructInit(UART_FIFO_CFG_Type *UART_FIFOInitStruct);

/* UART get information functions -----------------------------------------------*/
uint32_t UART_GetIntId(LPC_UART_TypeDef* UARTx);
uint8_t UART_GetLineStatus(LPC_UART_TypeDef* UARTx);

/* UART operate functions -------------------------------------------------------*/
void UART_IntConfig(LPC_UART_TypeDef *UARTx, UART_INT_Type UARTIntCfg, \
                FunctionalState NewState);
void UART_TxCmd(LPC_UART_TypeDef *UARTx, FunctionalState NewState);
FlagStatus UART_CheckBusy(LPC_UART_TypeDef *UARTx);
void UART_ForceBreak(LPC_UART_TypeDef* UARTx);

/* UART Auto-baud functions -----------------------------------------------------*/
void UART_ABClearIntPending(LPC_UART_TypeDef *UARTx, UART_ABEO_Type ABIntType);
void UART_ABCmd(LPC_UART_TypeDef *UARTx, UART_AB_CFG_Type *ABConfigStruct, \
                FunctionalState NewState);

/* UART1 FullModem functions ----------------------------------------------------*/
void UART_FullModemForcePinState(LPC_UART1_TypeDef *UARTx, UART_MODEM_PIN_Type Pin, \
                            UART1_SignalState NewState);
void UART_FullModemConfigMode(LPC_UART1_TypeDef *UARTx, UART_MODEM_MODE_Type Mode, \
                            FunctionalState NewState);
uint8_t UART_FullModemGetStatus(LPC_UART1_TypeDef *UARTx);

/* UART RS485 functions ----------------------------------------------------------*/
void UART_RS485Config(LPC_UART_TypeDef *UARTx,
                                    UART1_RS485_CTRLCFG_Type *RS485ConfigStruct);
void UART_RS485ReceiverCmd(LPC_UART_TypeDef *UARTx, FunctionalState NewState);
void UART_RS485SendSlvAddr(LPC_UART_TypeDef *UARTx, uint8_t SlvAddr);
uint32_t UART_RS485SendData(LPC_UART_TypeDef *UARTx, uint8_t *pData, uint32_t size);

/* UART IrDA functions-------------------------------------------------------------*/
void UART_IrDAInvtInputCmd(LPC_UART_TypeDef* UARTx, FunctionalState NewState);
void UART_IrDACmd(LPC_UART_TypeDef* UARTx, FunctionalState NewState);
void UART_IrDAPulseDivConfig(LPC_UART_TypeDef *UARTx, UART_IrDA_PULSE_Type PulseDiv);
/**
 * @}
 */


#ifdef __cplusplus
}
#endif


#endif /* __LPC177X_8X_UART_H_ */

/**
 * @}
 */

/* --------------------------------- End Of File ------------------------------ */