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//*****************************************************************************
//
// i2c.h - Prototypes for the I2C 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 __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
//*****************************************************************************
//
// 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
//*****************************************************************************
//
// 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__
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