uart.h

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//*****************************************************************************
//
// uart.h - Defines and Macros for the UART.
//
// Copyright (c) 2005-2017 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.
//
//*****************************************************************************

#ifndef __DRIVERLIB_UART_H__
#define __DRIVERLIB_UART_H__

#include <stdint.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 ui32IntFlags parameter, and returned from UARTIntStatus.
//
//*****************************************************************************
#define UART_INT_DMATX          0x20000     // DMA TX interrupt
#define UART_INT_DMARX          0x10000     // DMA RX interrupt
#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 ui32Config parameter
// and returned by UARTConfigGetExpClk in the pui32Config parameter.
// Additionally, the UART_CONFIG_PAR_* subset can be passed to
// UARTParityModeSet as the ui32Parity 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 ui32TxLevel parameter
// and returned by UARTFIFOLevelGet in the pui32TxLevel.
//
//*****************************************************************************
#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 ui32RxLevel parameter
// and returned by UARTFIFOLevelGet in the pui32RxLevel.
//
//*****************************************************************************
#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_ALTCLK       0x00000005

//*****************************************************************************
//
// API Function prototypes
//
//*****************************************************************************
extern void UARTParityModeSet(uint32_t ui32Base, uint32_t ui32Parity);
extern uint32_t UARTParityModeGet(uint32_t ui32Base);
extern void UARTFIFOLevelSet(uint32_t ui32Base, uint32_t ui32TxLevel,
                             uint32_t ui32RxLevel);
extern void UARTFIFOLevelGet(uint32_t ui32Base, uint32_t *pui32TxLevel,
                             uint32_t *pui32RxLevel);
extern void UARTConfigSetExpClk(uint32_t ui32Base, uint32_t ui32UARTClk,
                                uint32_t ui32Baud, uint32_t ui32Config);
extern void UARTConfigGetExpClk(uint32_t ui32Base, uint32_t ui32UARTClk,
                                uint32_t *pui32Baud, uint32_t *pui32Config);
extern void UARTEnable(uint32_t ui32Base);
extern void UARTDisable(uint32_t ui32Base);
extern void UARTFIFOEnable(uint32_t ui32Base);
extern void UARTFIFODisable(uint32_t ui32Base);
extern void UARTEnableSIR(uint32_t ui32Base, bool bLowPower);
extern void UARTDisableSIR(uint32_t ui32Base);
extern bool UARTCharsAvail(uint32_t ui32Base);
extern bool UARTSpaceAvail(uint32_t ui32Base);
extern int32_t UARTCharGetNonBlocking(uint32_t ui32Base);
extern int32_t UARTCharGet(uint32_t ui32Base);
extern bool UARTCharPutNonBlocking(uint32_t ui32Base, unsigned char ucData);
extern void UARTCharPut(uint32_t ui32Base, unsigned char ucData);
extern void UARTBreakCtl(uint32_t ui32Base, bool bBreakState);
extern bool UARTBusy(uint32_t ui32Base);
extern void UARTIntRegister(uint32_t ui32Base, void (*pfnHandler)(void));
extern void UARTIntUnregister(uint32_t ui32Base);
extern void UARTIntEnable(uint32_t ui32Base, uint32_t ui32IntFlags);
extern void UARTIntDisable(uint32_t ui32Base, uint32_t ui32IntFlags);
extern uint32_t UARTIntStatus(uint32_t ui32Base, bool bMasked);
extern void UARTIntClear(uint32_t ui32Base, uint32_t ui32IntFlags);
extern void UARTDMAEnable(uint32_t ui32Base, uint32_t ui32DMAFlags);
extern void UARTDMADisable(uint32_t ui32Base, uint32_t ui32DMAFlags);
extern uint32_t UARTRxErrorGet(uint32_t ui32Base);
extern void UARTRxErrorClear(uint32_t ui32Base);
extern void UARTSmartCardEnable(uint32_t ui32Base);
extern void UARTSmartCardDisable(uint32_t ui32Base);
extern void UARTModemControlSet(uint32_t ui32Base, uint32_t ui32Control);
extern void UARTModemControlClear(uint32_t ui32Base, uint32_t ui32Control);
extern uint32_t UARTModemControlGet(uint32_t ui32Base);
extern uint32_t UARTModemStatusGet(uint32_t ui32Base);
extern void UARTFlowControlSet(uint32_t ui32Base, uint32_t ui32Mode);
extern uint32_t UARTFlowControlGet(uint32_t ui32Base);
extern void UARTTxIntModeSet(uint32_t ui32Base, uint32_t ui32Mode);
extern uint32_t UARTTxIntModeGet(uint32_t ui32Base);
extern void UARTClockSourceSet(uint32_t ui32Base, uint32_t ui32Source);
extern uint32_t UARTClockSourceGet(uint32_t ui32Base);
extern void UART9BitEnable(uint32_t ui32Base);
extern void UART9BitDisable(uint32_t ui32Base);
extern void UART9BitAddrSet(uint32_t ui32Base, uint8_t ui8Addr,
                            uint8_t ui8Mask);
extern void UART9BitAddrSend(uint32_t ui32Base, uint8_t ui8Addr);
extern void UARTLoopbackEnable(uint32_t ui32Base);

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

#endif // __DRIVERLIB_UART_H__