//*****************************************************************************
//
// uart.h - Defines and Macros for the UART.
//
// Copyright (c) 2005-2012 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
//   Redistribution and use in source and binary forms, with or without
//   modification, are permitted provided that the following conditions
//   are met:
// 
//   Redistributions of source code must retain the above copyright
//   notice, this list of conditions and the following disclaimer.
// 
//   Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the
//   documentation and/or other materials provided with the  
//   distribution.
// 
//   Neither the name of Texas Instruments Incorporated nor the names of
//   its contributors may be used to endorse or promote products derived
//   from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// This is part of revision 9107 of the Stellaris Peripheral Driver Library.
//
//*****************************************************************************

#ifndef __UART_H__
#define __UART_H__

#include <stdbool.h>

//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif

//*****************************************************************************
//
// Values that can be passed to UARTIntEnable, UARTIntDisable, and UARTIntClear
// as the ulIntFlags parameter, and returned from UARTIntStatus.
//
//*****************************************************************************
#define UART_INT_9BIT           0x1000      // 9-bit address match interrupt
#define UART_INT_OE             0x400       // Overrun Error Interrupt Mask
#define UART_INT_BE             0x200       // Break Error Interrupt Mask
#define UART_INT_PE             0x100       // Parity Error Interrupt Mask
#define UART_INT_FE             0x080       // Framing Error Interrupt Mask
#define UART_INT_RT             0x040       // Receive Timeout Interrupt Mask
#define UART_INT_TX             0x020       // Transmit Interrupt Mask
#define UART_INT_RX             0x010       // Receive Interrupt Mask
#define UART_INT_DSR            0x008       // DSR Modem Interrupt Mask
#define UART_INT_DCD            0x004       // DCD Modem Interrupt Mask
#define UART_INT_CTS            0x002       // CTS Modem Interrupt Mask
#define UART_INT_RI             0x001       // RI Modem Interrupt Mask

//*****************************************************************************
//
// Values that can be passed to UARTConfigSetExpClk as the ulConfig parameter
// and returned by UARTConfigGetExpClk in the pulConfig parameter.
// Additionally, the UART_CONFIG_PAR_* subset can be passed to
// UARTParityModeSet as the ulParity parameter, and are returned by
// UARTParityModeGet.
//
//*****************************************************************************
#define UART_CONFIG_WLEN_MASK   0x00000060  // Mask for extracting word length
#define UART_CONFIG_WLEN_8      0x00000060  // 8 bit data
#define UART_CONFIG_WLEN_7      0x00000040  // 7 bit data
#define UART_CONFIG_WLEN_6      0x00000020  // 6 bit data
#define UART_CONFIG_WLEN_5      0x00000000  // 5 bit data
#define UART_CONFIG_STOP_MASK   0x00000008  // Mask for extracting stop bits
#define UART_CONFIG_STOP_ONE    0x00000000  // One stop bit
#define UART_CONFIG_STOP_TWO    0x00000008  // Two stop bits
#define UART_CONFIG_PAR_MASK    0x00000086  // Mask for extracting parity
#define UART_CONFIG_PAR_NONE    0x00000000  // No parity
#define UART_CONFIG_PAR_EVEN    0x00000006  // Even parity
#define UART_CONFIG_PAR_ODD     0x00000002  // Odd parity
#define UART_CONFIG_PAR_ONE     0x00000082  // Parity bit is one
#define UART_CONFIG_PAR_ZERO    0x00000086  // Parity bit is zero

//*****************************************************************************
//
// Values that can be passed to UARTFIFOLevelSet as the ulTxLevel parameter and
// returned by UARTFIFOLevelGet in the pulTxLevel.
//
//*****************************************************************************
#define UART_FIFO_TX1_8         0x00000000  // Transmit interrupt at 1/8 Full
#define UART_FIFO_TX2_8         0x00000001  // Transmit interrupt at 1/4 Full
#define UART_FIFO_TX4_8         0x00000002  // Transmit interrupt at 1/2 Full
#define UART_FIFO_TX6_8         0x00000003  // Transmit interrupt at 3/4 Full
#define UART_FIFO_TX7_8         0x00000004  // Transmit interrupt at 7/8 Full

//*****************************************************************************
//
// Values that can be passed to UARTFIFOLevelSet as the ulRxLevel parameter and
// returned by UARTFIFOLevelGet in the pulRxLevel.
//
//*****************************************************************************
#define UART_FIFO_RX1_8         0x00000000  // Receive interrupt at 1/8 Full
#define UART_FIFO_RX2_8         0x00000008  // Receive interrupt at 1/4 Full
#define UART_FIFO_RX4_8         0x00000010  // Receive interrupt at 1/2 Full
#define UART_FIFO_RX6_8         0x00000018  // Receive interrupt at 3/4 Full
#define UART_FIFO_RX7_8         0x00000020  // Receive interrupt at 7/8 Full

//*****************************************************************************
//
// Values that can be passed to UARTDMAEnable() and UARTDMADisable().
//
//*****************************************************************************
#define UART_DMA_ERR_RXSTOP     0x00000004  // Stop DMA receive if UART error
#define UART_DMA_TX             0x00000002  // Enable DMA for transmit
#define UART_DMA_RX             0x00000001  // Enable DMA for receive

//*****************************************************************************
//
// Values returned from UARTRxErrorGet().
//
//*****************************************************************************
#define UART_RXERROR_OVERRUN    0x00000008
#define UART_RXERROR_BREAK      0x00000004
#define UART_RXERROR_PARITY     0x00000002
#define UART_RXERROR_FRAMING    0x00000001

//*****************************************************************************
//
// Values that can be passed to UARTHandshakeOutputsSet() or returned from
// UARTHandshakeOutputGet().
//
//*****************************************************************************
#define UART_OUTPUT_RTS         0x00000800
#define UART_OUTPUT_DTR         0x00000400

//*****************************************************************************
//
// Values that can be returned from UARTHandshakeInputsGet().
//
//*****************************************************************************
#define UART_INPUT_RI           0x00000100
#define UART_INPUT_DCD          0x00000004
#define UART_INPUT_DSR          0x00000002
#define UART_INPUT_CTS          0x00000001

//*****************************************************************************
//
// Values that can be passed to UARTFlowControl() or returned from
// UARTFlowControlGet().
//
//*****************************************************************************
#define UART_FLOWCONTROL_TX     0x00008000
#define UART_FLOWCONTROL_RX     0x00004000
#define UART_FLOWCONTROL_NONE   0x00000000

//*****************************************************************************
//
// Values that can be passed to UARTTxIntModeSet() or returned from
// UARTTxIntModeGet().
//
//*****************************************************************************
#define UART_TXINT_MODE_FIFO    0x00000000
#define UART_TXINT_MODE_EOT     0x00000010

//*****************************************************************************
//
// Values that can be passed to UARTClockSourceSet() or returned from
// UARTClockSourceGet().
//
//*****************************************************************************
#define UART_CLOCK_SYSTEM       0x00000000
#define UART_CLOCK_PIOSC        0x00000005

//*****************************************************************************
//
// API Function prototypes
//
//*****************************************************************************
extern void UARTParityModeSet(unsigned long ulBase, unsigned long ulParity);
extern unsigned long UARTParityModeGet(unsigned long ulBase);
extern void UARTFIFOLevelSet(unsigned long ulBase, unsigned long ulTxLevel,
                             unsigned long ulRxLevel);
extern void UARTFIFOLevelGet(unsigned long ulBase, unsigned long *pulTxLevel,
                             unsigned long *pulRxLevel);
extern void UARTConfigSetExpClk(unsigned long ulBase, unsigned long ulUARTClk,
                                unsigned long ulBaud, unsigned long ulConfig);
extern void UARTConfigGetExpClk(unsigned long ulBase, unsigned long ulUARTClk,
                                unsigned long *pulBaud,
                                unsigned long *pulConfig);
extern void UARTEnable(unsigned long ulBase);
extern void UARTDisable(unsigned long ulBase);
extern void UARTFIFOEnable(unsigned long ulBase);
extern void UARTFIFODisable(unsigned long ulBase);
extern void UARTEnableSIR(unsigned long ulBase, bool bLowPower);
extern void UARTDisableSIR(unsigned long ulBase);
extern bool UARTCharsAvail(unsigned long ulBase);
extern bool UARTSpaceAvail(unsigned long ulBase);
extern long UARTCharGetNonBlocking(unsigned long ulBase);
extern long UARTCharGet(unsigned long ulBase);
extern bool UARTCharPutNonBlocking(unsigned long ulBase,
                                       unsigned char ucData);
extern void UARTCharPut(unsigned long ulBase, unsigned char ucData);
extern void UARTBreakCtl(unsigned long ulBase, bool bBreakState);
extern bool UARTBusy(unsigned long ulBase);
extern void UARTIntRegister(unsigned long ulBase, void(*pfnHandler)(void));
extern void UARTIntUnregister(unsigned long ulBase);
extern void UARTIntEnable(unsigned long ulBase, unsigned long ulIntFlags);
extern void UARTIntDisable(unsigned long ulBase, unsigned long ulIntFlags);
extern unsigned long UARTIntStatus(unsigned long ulBase, bool bMasked);
extern void UARTIntClear(unsigned long ulBase, unsigned long ulIntFlags);
extern void UARTDMAEnable(unsigned long ulBase, unsigned long ulDMAFlags);
extern void UARTDMADisable(unsigned long ulBase, unsigned long ulDMAFlags);
extern unsigned long UARTRxErrorGet(unsigned long ulBase);
extern void UARTRxErrorClear(unsigned long ulBase);
extern void UARTSmartCardEnable(unsigned long ulBase);
extern void UARTSmartCardDisable(unsigned long ulBase);
extern void UARTModemControlSet(unsigned long ulBase,
                                unsigned long ulControl);
extern void UARTModemControlClear(unsigned long ulBase,
                                  unsigned long ulControl);
extern unsigned long UARTModemControlGet(unsigned long ulBase);
extern unsigned long UARTModemStatusGet(unsigned long ulBase);
extern void UARTFlowControlSet(unsigned long ulBase, unsigned long ulMode);
extern unsigned long UARTFlowControlGet(unsigned long ulBase);
extern void UARTTxIntModeSet(unsigned long ulBase, unsigned long ulMode);
extern unsigned long UARTTxIntModeGet(unsigned long ulBase);
extern void UARTClockSourceSet(unsigned long ulBase, unsigned long ulSource);
extern unsigned long UARTClockSourceGet(unsigned long ulBase);
extern void UART9BitEnable(unsigned long ulBase);
extern void UART9BitDisable(unsigned long ulBase);
extern void UART9BitAddrSet(unsigned long ulBase, unsigned char ucAddr,
                            unsigned char ucMask);
extern void UART9BitAddrSend(unsigned long ulBase, unsigned char ucAddr);

//*****************************************************************************
//
// Several UART APIs have been renamed, with the original function name being
// deprecated.  These defines provide backward compatibility.
//
//*****************************************************************************
#if 0 // #ifndef DEPRECATED
#include "driverlib/sysctl.h"
#define UARTConfigSet(a, b, c)                         \
        UARTConfigSetExpClk(a, SysCtlClockGet(), b, c)
#define UARTConfigGet(a, b, c)                         \
        UARTConfigGetExpClk(a, SysCtlClockGet(), b, c)
#define UARTCharNonBlockingGet(a) \
        UARTCharGetNonBlocking(a)
#define UARTCharNonBlockingPut(a, b) \
        UARTCharPutNonBlocking(a, b)
#endif

//*****************************************************************************
//
// Mark the end of the C bindings section for C++ compilers.
//
//*****************************************************************************
#ifdef __cplusplus
}
#endif

#endif //  __UART_H__
