2013-01-08 22:40:58 +08:00
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//*****************************************************************************
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//
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// ssi.h - Prototypes for the Synchronous Serial Interface Driver.
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//
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// Copyright (c) 2005-2011 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Texas Instruments (TI) is supplying this software for use solely and
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// exclusively on TI's microcontroller products. The software is owned by
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// TI and/or its suppliers, and is protected under applicable copyright
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// laws. You may not combine this software with "viral" open-source
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// software in order to form a larger program.
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//
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// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
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// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
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// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
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// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
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// DAMAGES, FOR ANY REASON WHATSOEVER.
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//
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// This is part of revision 8264 of the Stellaris Peripheral Driver Library.
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//
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//*****************************************************************************
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#ifndef __SSI_H__
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#define __SSI_H__
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// Values that can be passed to SSIIntEnable, SSIIntDisable, and SSIIntClear
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// as the ulIntFlags parameter, and returned by SSIIntStatus.
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//
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//*****************************************************************************
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#define SSI_TXFF 0x00000008 // TX FIFO half full or less
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#define SSI_RXFF 0x00000004 // RX FIFO half full or more
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#define SSI_RXTO 0x00000002 // RX timeout
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#define SSI_RXOR 0x00000001 // RX overrun
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//*****************************************************************************
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//
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// Values that can be passed to SSIConfigSetExpClk.
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//
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//*****************************************************************************
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#define SSI_FRF_MOTO_MODE_0 0x00000000 // Moto fmt, polarity 0, phase 0
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#define SSI_FRF_MOTO_MODE_1 0x00000002 // Moto fmt, polarity 0, phase 1
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#define SSI_FRF_MOTO_MODE_2 0x00000001 // Moto fmt, polarity 1, phase 0
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#define SSI_FRF_MOTO_MODE_3 0x00000003 // Moto fmt, polarity 1, phase 1
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#define SSI_FRF_TI 0x00000010 // TI frame format
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#define SSI_FRF_NMW 0x00000020 // National MicroWire frame format
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#define SSI_MODE_MASTER 0x00000000 // SSI master
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#define SSI_MODE_SLAVE 0x00000001 // SSI slave
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#define SSI_MODE_SLAVE_OD 0x00000002 // SSI slave with output disabled
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//*****************************************************************************
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//
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// Values that can be passed to SSIDMAEnable() and SSIDMADisable().
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//
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//*****************************************************************************
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#define SSI_DMA_TX 0x00000002 // Enable DMA for transmit
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#define SSI_DMA_RX 0x00000001 // Enable DMA for receive
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//*****************************************************************************
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//
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// Values that can be passed to SSIClockSourceSet() or returned from
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// SSIClockSourceGet().
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//
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//*****************************************************************************
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#define SSI_CLOCK_SYSTEM 0x00000000
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#define SSI_CLOCK_PIOSC 0x00000001
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//*****************************************************************************
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//
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// Prototypes for the APIs.
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//
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//*****************************************************************************
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extern void SSIConfigSetExpClk(unsigned long ulBase, unsigned long ulSSIClk,
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unsigned long ulProtocol, unsigned long ulMode,
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unsigned long ulBitRate,
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unsigned long ulDataWidth);
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extern void SSIDataGet(unsigned long ulBase, unsigned long *pulData);
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extern long SSIDataGetNonBlocking(unsigned long ulBase,
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unsigned long *pulData);
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extern void SSIDataPut(unsigned long ulBase, unsigned long ulData);
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extern long SSIDataPutNonBlocking(unsigned long ulBase, unsigned long ulData);
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extern void SSIDisable(unsigned long ulBase);
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extern void SSIEnable(unsigned long ulBase);
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extern void SSIIntClear(unsigned long ulBase, unsigned long ulIntFlags);
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extern void SSIIntDisable(unsigned long ulBase, unsigned long ulIntFlags);
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extern void SSIIntEnable(unsigned long ulBase, unsigned long ulIntFlags);
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extern void SSIIntRegister(unsigned long ulBase, void(*pfnHandler)(void));
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extern unsigned long SSIIntStatus(unsigned long ulBase, tBoolean bMasked);
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extern void SSIIntUnregister(unsigned long ulBase);
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extern void SSIDMAEnable(unsigned long ulBase, unsigned long ulDMAFlags);
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extern void SSIDMADisable(unsigned long ulBase, unsigned long ulDMAFlags);
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extern tBoolean SSIBusy(unsigned long ulBase);
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extern void SSIClockSourceSet(unsigned long ulBase, unsigned long ulSource);
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extern unsigned long SSIClockSourceGet(unsigned long ulBase);
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//*****************************************************************************
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//
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// Several SSI APIs have been renamed, with the original function name being
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// deprecated. These defines provide backward compatibility.
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//
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//*****************************************************************************
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#ifndef DEPRECATED
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#include "driverlib/sysctl.h"
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#define SSIConfig(a, b, c, d, e) \
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SSIConfigSetExpClk(a, SysCtlClockGet(), b, c, d, e)
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#define SSIDataNonBlockingGet(a, b) \
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SSIDataGetNonBlocking(a, b)
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#define SSIDataNonBlockingPut(a, b) \
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SSIDataPutNonBlocking(a, b)
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#endif
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __SSI_H__
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