164 lines
7.4 KiB
C
164 lines
7.4 KiB
C
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//*****************************************************************************
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//
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// spi.h
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//
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// Defines and Macros for the SPI.
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//
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// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
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//
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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//*****************************************************************************
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#ifndef __SPI_H__
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#define __SPI_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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// Values that can be passed to SPIConfigSetExpClk() as ulMode parameter
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//*****************************************************************************
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#define SPI_MODE_MASTER 0x00000000
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#define SPI_MODE_SLAVE 0x00000004
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//*****************************************************************************
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// Values that can be passed to SPIConfigSetExpClk() as ulSubMode parameter
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//*****************************************************************************
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#define SPI_SUB_MODE_0 0x00000000
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#define SPI_SUB_MODE_1 0x00000001
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#define SPI_SUB_MODE_2 0x00000002
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#define SPI_SUB_MODE_3 0x00000003
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//*****************************************************************************
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// Values that can be passed to SPIConfigSetExpClk() as ulConfigFlags parameter
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//*****************************************************************************
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#define SPI_SW_CTRL_CS 0x01000000
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#define SPI_HW_CTRL_CS 0x00000000
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#define SPI_3PIN_MODE 0x02000000
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#define SPI_4PIN_MODE 0x00000000
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#define SPI_TURBO_ON 0x00080000
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#define SPI_TURBO_OFF 0x00000000
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#define SPI_CS_ACTIVEHIGH 0x00000000
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#define SPI_CS_ACTIVELOW 0x00000040
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#define SPI_WL_8 0x00000380
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#define SPI_WL_16 0x00000780
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#define SPI_WL_32 0x00000F80
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//*****************************************************************************
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// Values that can be passed to SPIFIFOEnable() and SPIFIFODisable()
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//*****************************************************************************
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#define SPI_TX_FIFO 0x08000000
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#define SPI_RX_FIFO 0x10000000
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//*****************************************************************************
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// Values that can be passed to SPIDMAEnable() and SPIDMADisable()
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//*****************************************************************************
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#define SPI_RX_DMA 0x00008000
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#define SPI_TX_DMA 0x00004000
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//*****************************************************************************
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// Values that can be passed to SPIIntEnable(), SPIIntDiasble(),
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// SPIIntClear() or returned from SPIStatus()
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//*****************************************************************************
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#define SPI_INT_DMATX 0x20000000
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#define SPI_INT_DMARX 0x10000000
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#define SPI_INT_EOW 0x00020000
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#define SPI_INT_WKS 0x00010000
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#define SPI_INT_RX_OVRFLOW 0x00000008
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#define SPI_INT_RX_FULL 0x00000004
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#define SPI_INT_TX_UDRFLOW 0x00000002
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#define SPI_INT_TX_EMPTY 0x00000001
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//*****************************************************************************
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// Values that can be passed to SPITransfer()
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//*****************************************************************************
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#define SPI_CS_ENABLE 0x00000001
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#define SPI_CS_DISABLE 0x00000002
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//*****************************************************************************
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//
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// API Function prototypes
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//
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//*****************************************************************************
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extern void SPIEnable(unsigned long ulBase);
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extern void SPIDisable(unsigned long ulBase);
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extern void SPIReset(unsigned long ulBase);
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extern void SPIConfigSetExpClk(unsigned long ulBase,unsigned long ulSPIClk,
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unsigned long ulBitRate, unsigned long ulMode,
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unsigned long ulSubMode, unsigned long ulConfig);
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extern long SPIDataGetNonBlocking(unsigned long ulBase,
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unsigned long * pulData);
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extern void SPIDataGet(unsigned long ulBase, unsigned long *pulData);
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extern long SPIDataPutNonBlocking(unsigned long ulBase,
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unsigned long ulData);
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extern void SPIDataPut(unsigned long ulBase, unsigned long ulData);
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extern void SPIFIFOEnable(unsigned long ulBase, unsigned long ulFlags);
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extern void SPIFIFODisable(unsigned long ulBase, unsigned long ulFlags);
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extern void SPIFIFOLevelSet(unsigned long ulBase, unsigned long ulTxLevel,
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unsigned long ulRxLevel);
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extern void SPIFIFOLevelGet(unsigned long ulBase, unsigned long *pulTxLevel,
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unsigned long *pulRxLevel);
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extern void SPIWordCountSet(unsigned long ulBase, unsigned long ulWordCount);
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extern void SPIIntRegister(unsigned long ulBase, void(*pfnHandler)(void));
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extern void SPIIntUnregister(unsigned long ulBase);
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extern void SPIIntEnable(unsigned long ulBase, unsigned long ulIntFlags);
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extern void SPIIntDisable(unsigned long ulBase, unsigned long ulIntFlags);
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extern unsigned long SPIIntStatus(unsigned long ulBase, tBoolean bMasked);
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extern void SPIIntClear(unsigned long ulBase, unsigned long ulIntFlags);
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extern void SPIDmaEnable(unsigned long ulBase, unsigned long ulFlags);
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extern void SPIDmaDisable(unsigned long ulBase, unsigned long ulFlags);
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extern void SPICSEnable(unsigned long ulBase);
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extern void SPICSDisable(unsigned long ulBase);
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extern long SPITransfer(unsigned long ulBase, unsigned char *ucDout,
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unsigned char *ucDin, unsigned long ulSize,
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unsigned long ulFlags);
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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 // __SPI_H__
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