/******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
* File Name          : uart.h
* Author             : MCD Application Team
* Date First Issued  : 16/05/2003
* Description        : This file contains all the functions prototypes for the
*                      UART software library.
********************************************************************************
* History:
*  16/05/2003 : Created
*******************************************************************************/
#ifndef _UART_H
#define _UART_H

#include "71x_lib.h"

#ifndef _RCCU
  #error _RCCU must be defined
#endif

#ifdef DEBUG
  #ifndef _PCU
    #error _PCU must be defined
  #endif
#endif /* DEBUG */

typedef enum
{
  UART_RxFIFO,
  UART_TxFIFO
} UARTFIFO_TypeDef;

typedef enum
{
  UART_EVEN_PARITY = 0x0000,
  UART_ODD_PARITY  = 0x0020,
  UART_NO_PARITY
} UARTParity_TypeDef;

typedef enum
{
  UART_0_5_StopBits  = 0x00,
  UART_1_StopBits    = 0x08,
  UART_1_5_StopBits  = 0x10,
  UART_2_StopBits    = 0x18
} UARTStopBits_TypeDef;

typedef enum
{
  UARTM_8D   = 0x01,
  UARTM_7D_P = 0x03,
  UARTM_9D   = 0x04,
  UARTM_8D_W = 0x05,
  UARTM_8D_P = 0x07
} UARTMode_TypeDef;


#define DUMMY 0

// UART flags definition
#define UART_TxFull          0x0200
#define UART_RxHalfFull      0x0100
#define UART_TimeOutIdle     0x0080
#define UART_TimeOutNotEmpty 0x0040
#define UART_OverrunError    0x0020
#define UART_FrameError      0x0010
#define UART_ParityError     0x0008
#define UART_TxHalfEmpty     0x0004
#define UART_TxEmpty         0x0002
#define UART_RxBufFull       0x0001

// CR regiter bit definition
#define UART_FIFOEnableBit 10
#define UART_RxEnableBit   8
#define UART_RunBit        7
#define UART_LoopBackBit   6
#define UART_ParityOddBit  5
#define UART_StopBits      3

// Stop bits definition
#define UART_05StopBits     0x00
#define UART_1StopBit       (0x01<<3)
#define UART_15StopBits     (0x02<<3)
#define UART_2StopBits      (0x03<<3)

// Modes definition
#define UART_8BitsData       0x01
#define UART_7BitsData       0x03
#define UART_9BitsData       0x04
#define UART_8BitsDataWakeUp 0x05
#define UART_8BitsDataParity 0x07

/*******************************************************************************
* Function Name  : UART_Init
* Description    : This function initializes the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Output         : None
* Return         : None
*******************************************************************************/
void UART_Init(UART_TypeDef *UARTx);

/*******************************************************************************
* Function Name  : UART_ModeConfig
* Description    : This function configures the mode of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The UART mode
* Output         : None
* Return         : None
*******************************************************************************/
inline void UART_ModeConfig(UART_TypeDef *UARTx, UARTMode_TypeDef UART_Mode)
{
  UARTx->CR = (UARTx->CR&0xFFF8)|(u16)UART_Mode;
}

/*******************************************************************************
* Function Name  : UART_BaudRateConfig
* Description    : This function configures the baud rate of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The baudrate value
* Output         : None
* Return         : None
*******************************************************************************/
void UART_BaudRateConfig(UART_TypeDef *UARTx, u32 BaudRate);

/*******************************************************************************
* Function Name  : UART_ParityConfig
* Description    : This function configures the data parity of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The parity type
* Output         : None
* Return         : None
*******************************************************************************/
inline void UART_ParityConfig(UART_TypeDef *UARTx, UARTParity_TypeDef Parity)
{
  UARTx->CR = (UARTx->CR&0xFFDF)|(u16)Parity;
}

/*******************************************************************************
* Function Name  : UART_StopBitsConfig
* Description    : This function configures the number of stop bits of the
*                  selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The number of stop bits
* Output         : None
* Return         : None
*******************************************************************************/
inline void UART_StopBitsConfig(UART_TypeDef *UARTx, UARTStopBits_TypeDef StopBits)
{
  UARTx->CR = (UARTx->CR&0xFFE7)|(u16)StopBits;
}

/*******************************************************************************
* Function Name  : UART_Config
* Description    : This function configures the baudrate, the mode, the data
*                  parity and the number of stop bits of the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The baudrate value
* Input 3        : The parity type
* Input 4        : The number of stop bits
* Input 5        : The UART mode
* Output         : None
* Return         : None
*******************************************************************************/
void UART_Config(UART_TypeDef *UARTx, u32 BaudRate, UARTParity_TypeDef Parity,
                 UARTStopBits_TypeDef StopBits, UARTMode_TypeDef Mode);

/*******************************************************************************
* Function Name  : UART_ItConfig
* Description    : This function enables or disables the interrupts of the
*                  selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : The new interrupt flag
* Input 3        : ENABLE or DISABLE
* Output         : None
* Return         : None
*******************************************************************************/
void UART_ItConfig(UART_TypeDef *UARTx, u16 UART_Flag, functionalstate NewStatus);

/*******************************************************************************
* Function Name  : UART_FifoConfig
* Description    : This function enables or disables the Rx and Tx FIFOs of
*                  the selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : ENABLE or DISABLE
* Output         : None
* Return         : None
*******************************************************************************/
void UART_FifoConfig(UART_TypeDef *UARTx, functionalstate NewStatus);

/*******************************************************************************
* Function Name  : UART_FifoReset
* Description    : This function resets the Rx and the Tx FIFOs of the
*                  selected UART.
* Input 1        : UARTx (x can be 0,1, 2 or 3) the desired UART
* Input 2        : RxFIFO or TxFIFO
* Output         : None
* Return         : None