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//*****************************************************************************

//

// hw_ssi.h - Macros used when accessing the SSI hardware.

//

// Copyright (c) 2005,2006 Luminary Micro, Inc.  All rights reserved.

//

// Software License Agreement

//

// Luminary Micro, Inc. (LMI) is supplying this software for use solely and

// exclusively on LMI's Stellaris Family of microcontroller products.

//

// The software is owned by LMI and/or its suppliers, and is protected under

// applicable copyright laws.  All rights are reserved.  Any use in violation

// of the foregoing restrictions may subject the user to criminal sanctions

// under applicable laws, as well as to civil liability for the breach of the

// terms and conditions of this license.

//

// THIS SOFTWARE IS PROVIDED "AS IS".  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.

// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR

// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.

//

// This is part of revision 816 of the Stellaris Driver Library.

//

//*****************************************************************************

#ifndef __HW_SSI_H__

#define __HW_SSI_H__

//*****************************************************************************

//

// The following define the offsets of the SSI registers.

//

//*****************************************************************************

#define SSI_O_CR0               0x00000000  // Control register 0

#define SSI_O_CR1               0x00000004  // Control register 1

#define SSI_O_DR                0x00000008  // Data register

#define SSI_O_SR                0x0000000C  // Status register

#define SSI_O_CPSR              0x00000010  // Clock prescale register

#define SSI_O_IM                0x00000014  // Int mask set and clear register

#define SSI_O_RIS               0x00000018  // Raw interrupt register

#define SSI_O_MIS               0x0000001C  // Masked interrupt register

#define SSI_O_ICR               0x00000020  // Interrupt clear register

//*****************************************************************************

//

// The following define the bit fields in the SSI Control register 0.

//

//*****************************************************************************

#define SSI_CR0_SCR             0x0000FF00  // Serial clock rate

#define SSI_CR0_SPH             0x00000080  // SSPCLKOUT phase

#define SSI_CR0_SPO             0x00000040  // SSPCLKOUT polarity

#define SSI_CR0_FRF_MASK        0x00000030  // Frame format mask

#define SSI_CR0_FRF_MOTO        0x00000000  // Motorola SPI frame format

#define SSI_CR0_FRF_TI          0x00000010  // TI sync serial frame format

#define SSI_CR0_FRF_NMW         0x00000020  // National Microwire frame format

#define SSI_CR0_DSS             0x0000000F  // Data size select

#define SSI_CR0_DSS_4           0x00000003  // 4 bit data

#define SSI_CR0_DSS_5           0x00000004  // 5 bit data

#define SSI_CR0_DSS_6           0x00000005  // 6 bit data

#define SSI_CR0_DSS_7           0x00000006  // 7 bit data

#define SSI_CR0_DSS_8           0x00000007  // 8 bit data

#define SSI_CR0_DSS_9           0x00000008  // 9 bit data

#define SSI_CR0_DSS_10          0x00000009  // 10 bit data

#define SSI_CR0_DSS_11          0x0000000A  // 11 bit data

#define SSI_CR0_DSS_12          0x0000000B  // 12 bit data

#define SSI_CR0_DSS_13          0x0000000C  // 13 bit data

#define SSI_CR0_DSS_14          0x0000000D  // 14 bit data

#define SSI_CR0_DSS_15          0x0000000E  // 15 bit data

#define SSI_CR0_DSS_16          0x0000000F  // 16 bit data

//*****************************************************************************

//

// The following define the bit fields in the SSI Control register 1.

//

//*****************************************************************************

#define SSI_CR1_SOD             0x00000008  // Slave mode output disable

#define SSI_CR1_MS              0x00000004  // Master or slave mode select

#define SSI_CR1_SSE             0x00000002  // Sync serial port enable

#define SSI_CR1_LBM             0x00000001  // Loopback mode

//*****************************************************************************

//

// The following define the bit fields in the SSI Status register.

//

//*****************************************************************************

#define SSI_SR_BSY              0x00000010  // SSI busy

#define SSI_SR_RFF              0x00000008  // RX FIFO full

#define SSI_SR_RNE              0x00000004  // RX FIFO not empty

#define SSI_SR_TNF              0x00000002  // TX FIFO not full

#define SSI_SR_TFE              0x00000001  // TX FIFO empty

//*****************************************************************************

//

// The following define the bit fields in the SSI clock prescale register.

//

//*****************************************************************************

#define SSI_CPSR_CPSDVSR_MASK   0x000000FF  // Clock prescale

//*****************************************************************************

//

// The following define information concerning the SSI Data register.

//

//*****************************************************************************

#define TX_FIFO_SIZE            (8)         // Number of entries in the TX FIFO

#define RX_FIFO_SIZE            (8)         // Number of entries in the RX FIFO

//*****************************************************************************

//

// The following define the bit fields in the interrupt mask set and clear,

// raw interrupt, masked interrupt, and interrupt clear registers.

//

//*****************************************************************************

#define SSI_INT_TXFF            0x00000008  // TX FIFO interrupt

#define SSI_INT_RXFF            0x00000004  // RX FIFO interrupt

#define SSI_INT_RXTO            0x00000002  // RX timeout interrupt

#define SSI_INT_RXOR            0x00000001  // RX overrun interrupt

#endif // __HW_SSI_H__