ssi.h

//*****************************************************************************
//
// ssi.h - Prototypes for the Synchronous Serial Interface Driver.
//
// Copyright (c) 2005-2011 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
// 
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
// 
// This is part of revision 8264 of the Stellaris Peripheral Driver Library.
//
//*****************************************************************************

#ifndef __SSI_H__
#define __SSI_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 SSIIntEnable, SSIIntDisable, and SSIIntClear
// as the ulIntFlags parameter, and returned by SSIIntStatus.
//
//*****************************************************************************
#define SSI_TXFF                0x00000008  // TX FIFO half full or less
#define SSI_RXFF                0x00000004  // RX FIFO half full or more
#define SSI_RXTO                0x00000002  // RX timeout
#define SSI_RXOR                0x00000001  // RX overrun

//*****************************************************************************
//
// Values that can be passed to SSIConfigSetExpClk.
//
//*****************************************************************************
#define SSI_FRF_MOTO_MODE_0     0x00000000  // Moto fmt, polarity 0, phase 0
#define SSI_FRF_MOTO_MODE_1     0x00000002  // Moto fmt, polarity 0, phase 1
#define SSI_FRF_MOTO_MODE_2     0x00000001  // Moto fmt, polarity 1, phase 0
#define SSI_FRF_MOTO_MODE_3     0x00000003  // Moto fmt, polarity 1, phase 1
#define SSI_FRF_TI              0x00000010  // TI frame format
#define SSI_FRF_NMW             0x00000020  // National MicroWire frame format

#define SSI_MODE_MASTER         0x00000000  // SSI master
#define SSI_MODE_SLAVE          0x00000001  // SSI slave
#define SSI_MODE_SLAVE_OD       0x00000002  // SSI slave with output disabled

//*****************************************************************************
//
// Values that can be passed to SSIDMAEnable() and SSIDMADisable().
//
//*****************************************************************************
#define SSI_DMA_TX              0x00000002  // Enable DMA for transmit
#define SSI_DMA_RX              0x00000001  // Enable DMA for receive

//*****************************************************************************
//
// Values that can be passed to SSIClockSourceSet() or returned from
// SSIClockSourceGet().
//
//*****************************************************************************
#define SSI_CLOCK_SYSTEM        0x00000000
#define SSI_CLOCK_PIOSC         0x00000001

//*****************************************************************************
//
// Prototypes for the APIs.
//
//*****************************************************************************
extern void SSIConfigSetExpClk(unsigned long ulBase, unsigned long ulSSIClk,
                               unsigned long ulProtocol, unsigned long ulMode,
                               unsigned long ulBitRate,
                               unsigned long ulDataWidth);
extern void SSIDataGet(unsigned long ulBase, unsigned long *pulData);
extern long SSIDataGetNonBlocking(unsigned long ulBase,
                                  unsigned long *pulData);
extern void SSIDataPut(unsigned long ulBase, unsigned long ulData);
extern long SSIDataPutNonBlocking(unsigned long ulBase, unsigned long ulData);
extern void SSIDisable(unsigned long ulBase);
extern void SSIEnable(unsigned long ulBase);
extern void SSIIntClear(unsigned long ulBase, unsigned long ulIntFlags);
extern void SSIIntDisable(unsigned long ulBase, unsigned long ulIntFlags);
extern void SSIIntEnable(unsigned long ulBase, unsigned long ulIntFlags);
extern void SSIIntRegister(unsigned long ulBase, void(*pfnHandler)(void));
extern unsigned long SSIIntStatus(unsigned long ulBase, tBoolean bMasked);
extern void SSIIntUnregister(unsigned long ulBase);
extern void SSIDMAEnable(unsigned long ulBase, unsigned long ulDMAFlags);
extern void SSIDMADisable(unsigned long ulBase, unsigned long ulDMAFlags);
extern tBoolean SSIBusy(unsigned long ulBase);
extern void SSIClockSourceSet(unsigned long ulBase, unsigned long ulSource);
extern unsigned long SSIClockSourceGet(unsigned long ulBase);

//*****************************************************************************
//
// Several SSI APIs have been renamed, with the original function name being
// deprecated.  These defines provide backward compatibility.
//
//*****************************************************************************
#ifndef DEPRECATED
#include "driverlib/sysctl.h"
#define SSIConfig(a, b, c, d, e)                            \
        SSIConfigSetExpClk(a, SysCtlClockGet(), b, c, d, e)
#define SSIDataNonBlockingGet(a, b) \
        SSIDataGetNonBlocking(a, b)
#define SSIDataNonBlockingPut(a, b) \
        SSIDataPutNonBlocking(a, b)
#endif

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

#endif // __SSI_H__