//*****************************************************************************
//
// i2c.h - Prototypes for the I2C Driver.
//
// Copyright (c) 2005-2013 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.
// 
// This is part of revision 10636 of the Stellaris Peripheral Driver Library.
//
//*****************************************************************************

#ifndef __I2C_H__
#define __I2C_H__

//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif

//*****************************************************************************
//
// Defines for the API.
//
//*****************************************************************************

//*****************************************************************************
//
// Interrupt defines.
//
//*****************************************************************************
#define I2C_INT_MASTER          0x00000001
#define I2C_INT_SLAVE           0x00000002

//*****************************************************************************
//
// I2C Master commands.
//
//*****************************************************************************
#define I2C_MASTER_CMD_SINGLE_SEND                                            \
                                0x00000007
#define I2C_MASTER_CMD_SINGLE_RECEIVE                                         \
                                0x00000007
#define I2C_MASTER_CMD_BURST_SEND_START                                       \
                                0x00000003
#define I2C_MASTER_CMD_BURST_SEND_CONT                                        \
                                0x00000001                                
#define I2C_MASTER_CMD_BURST_SEND_FINISH                                      \
                                0x00000005
#define I2C_MASTER_CMD_BURST_SEND_STOP                                        \
                                0x00000004
#define I2C_MASTER_CMD_BURST_SEND_ERROR_STOP                                  \
                                0x00000004
#define I2C_MASTER_CMD_BURST_RECEIVE_START                                    \
                                0x0000000b
#define I2C_MASTER_CMD_BURST_RECEIVE_CONT                                     \
                                0x00000009
#define I2C_MASTER_CMD_BURST_RECEIVE_FINISH                                   \
                                0x00000005
#define I2C_MASTER_CMD_BURST_RECEIVE_ERROR_STOP                               \
                                0x00000004
#define I2C_MASTER_CMD_QUICK_COMMAND                                          \
                                0x00000027
#define I2C_MASTER_CMD_HS_MASTER_CODE_SEND                                    \
                                0x00000011      

//*****************************************************************************
//
// I2C Master error status.
//
//*****************************************************************************
#define I2C_MASTER_ERR_NONE     0
#define I2C_MASTER_ERR_ADDR_ACK 0x00000004
#define I2C_MASTER_ERR_DATA_ACK 0x00000008
#define I2C_MASTER_ERR_ARB_LOST 0x00000010
#define I2C_MASTER_ERR_CLK_TOUT 0x00000080

//*****************************************************************************
//
// I2C Slave action requests
//
//*****************************************************************************
#define I2C_SLAVE_ACT_NONE      0
#define I2C_SLAVE_ACT_RREQ      0x00000001  // Master has sent data
#define I2C_SLAVE_ACT_TREQ      0x00000002  // Master has requested data
#define I2C_SLAVE_ACT_RREQ_FBR  0x00000005  // Master has sent first byte
#define I2C_SLAVE_ACT_OWN2SEL   0x00000008  // Master requested secondary slave
#define I2C_SLAVE_ACT_QCMD      0x00000010  // Master has sent a Quick Command
#define I2C_SLAVE_ACT_QCMD_DATA 0x00000020  // Master Quick Command value
                                
//*****************************************************************************
//
// Miscellaneous I2C driver definitions.
//
//*****************************************************************************
#define I2C_MASTER_MAX_RETRIES  1000        // Number of retries

//*****************************************************************************
//
// I2C Master interrupts.
//
//*****************************************************************************
#define I2C_MASTER_INT_TIMEOUT          0x00000002  // Clock Timeout Interrupt.
#define I2C_MASTER_INT_DATA             0x00000001  // Data Interrupt.

//*****************************************************************************
//
// I2C Slave interrupts.
//
//*****************************************************************************
#define I2C_SLAVE_INT_STOP          0x00000004  // Stop Condition Interrupt.
#define I2C_SLAVE_INT_START         0x00000002  // Start Condition Interrupt.
#define I2C_SLAVE_INT_DATA          0x00000001  // Data Interrupt.

//*****************************************************************************
//
// Prototypes for the APIs.
//
//*****************************************************************************
extern void I2CIntRegister(unsigned long ulBase, void(fnHandler)(void));
extern void I2CIntUnregister(unsigned long ulBase);
extern tBoolean I2CMasterBusBusy(unsigned long ulBase);
extern tBoolean I2CMasterBusy(unsigned long ulBase);
extern void I2CMasterControl(unsigned long ulBase, unsigned long ulCmd);
extern unsigned long I2CMasterDataGet(unsigned long ulBase);
extern void I2CMasterDataPut(unsigned long ulBase, unsigned char ucData);
extern void I2CMasterDisable(unsigned long ulBase);
extern void I2CMasterEnable(unsigned long ulBase);
extern unsigned long I2CMasterErr(unsigned long ulBase);
extern void I2CMasterInitExpClk(unsigned long ulBase, unsigned long ulI2CClk,
                                tBoolean bFast);
extern void I2CMasterIntClear(unsigned long ulBase);
extern void I2CMasterIntDisable(unsigned long ulBase);
extern void I2CMasterIntEnable(unsigned long ulBase);
extern tBoolean I2CMasterIntStatus(unsigned long ulBase, tBoolean bMasked);
extern void I2CMasterIntEnableEx(unsigned long ulBase,
                                 unsigned long ulIntFlags);
extern void I2CMasterIntDisableEx(unsigned long ulBase,
                                  unsigned long ulIntFlags);
extern unsigned long I2CMasterIntStatusEx(unsigned long ulBase,
                                          tBoolean bMasked);
extern void I2CMasterIntClearEx(unsigned long ulBase,
                                unsigned long ulIntFlags);
extern void I2CMasterTimeoutSet(unsigned long ulBase, unsigned long ulValue);
extern void I2CSlaveACKOverride(unsigned long ulBase, tBoolean bEnable);
extern void I2CSlaveACKValueSet(unsigned long ulBase, tBoolean bACK);
extern unsigned long I2CMasterLineStateGet(unsigned long ulBase);
extern void I2CMasterSlaveAddrSet(unsigned long ulBase,
                                  unsigned char ucSlaveAddr,
                                  tBoolean bReceive);
extern unsigned long I2CSlaveDataGet(unsigned long ulBase);
extern void I2CSlaveDataPut(unsigned long ulBase, unsigned char ucData);
extern void I2CSlaveDisable(unsigned long ulBase);
extern void I2CSlaveEnable(unsigned long ulBase);
extern void I2CSlaveInit(unsigned long ulBase, unsigned char ucSlaveAddr);
extern void I2CSlaveAddressSet(unsigned long ulBase, unsigned char ucAddrNum,
                               unsigned char ucSlaveAddr);
extern void I2CSlaveIntClear(unsigned long ulBase);
extern void I2CSlaveIntDisable(unsigned long ulBase);
extern void I2CSlaveIntEnable(unsigned long ulBase);
extern void I2CSlaveIntClearEx(unsigned long ulBase, unsigned long ulIntFlags);
extern void I2CSlaveIntDisableEx(unsigned long ulBase,
                                 unsigned long ulIntFlags);
extern void I2CSlaveIntEnableEx(unsigned long ulBase, unsigned long ulIntFlags);
extern tBoolean I2CSlaveIntStatus(unsigned long ulBase, tBoolean bMasked);
extern unsigned long I2CSlaveIntStatusEx(unsigned long ulBase,
                                         tBoolean bMasked);
extern unsigned long I2CSlaveStatus(unsigned long ulBase);

//*****************************************************************************
//
// Several I2C APIs have been renamed, with the original function name being
// deprecated.  These defines provide backward compatibility.
//
//*****************************************************************************
#ifndef DEPRECATED
#include "driverlib/sysctl.h"
#define I2CMasterInit(a, b)                         \
        I2CMasterInitExpClk(a, SysCtlClockGet(), b)
#endif

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

#endif // __I2C_H__
