hw_i2c.h

基于TI公司Cortex-M3的uart超级通信开发

//*****************************************************************************
//
// hw_i2c.h - Macros used when accessing the I2C master and slave hardware.
//
// Copyright (c) 2005-2009 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 microcontroller products.
// 
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws.  All rights are reserved.  You may not combine
// this software with "viral" open-source software in order to form a larger
// program.  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 5228 of the Stellaris Firmware Development Package.
//
//*****************************************************************************

#ifndef __HW_I2C_H__
#define __HW_I2C_H__

//*****************************************************************************
//
// The following are defines for the offsets between the I2C master and slave
// registers.
//
//*****************************************************************************
#define I2C_O_MSA               0x00000000  // I2C Master Slave Address
#define I2C_O_SOAR              0x00000000  // I2C Slave Own Address
#define I2C_O_SCSR              0x00000004  // I2C Slave Control/Status
#define I2C_O_MCS               0x00000004  // I2C Master Control/Status
#define I2C_O_SDR               0x00000008  // I2C Slave Data
#define I2C_O_MDR               0x00000008  // I2C Master Data
#define I2C_O_MTPR              0x0000000C  // I2C Master Timer Period
#define I2C_O_SIMR              0x0000000C  // I2C Slave Interrupt Mask
#define I2C_O_SRIS              0x00000010  // I2C Slave Raw Interrupt Status
#define I2C_O_MIMR              0x00000010  // I2C Master Interrupt Mask
#define I2C_O_MRIS              0x00000014  // I2C Master Raw Interrupt Status
#define I2C_O_SMIS              0x00000014  // I2C Slave Masked Interrupt
                                            // Status
#define I2C_O_SICR              0x00000018  // I2C Slave Interrupt Clear
#define I2C_O_MMIS              0x00000018  // I2C Master Masked Interrupt
                                            // Status
#define I2C_O_MICR              0x0000001C  // I2C Master Interrupt Clear
#define I2C_O_MCR               0x00000020  // I2C Master Configuration

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MSA register.
//
//*****************************************************************************
#define I2C_MSA_SA_M            0x000000FE  // I2C Slave Address
#define I2C_MSA_RS              0x00000001  // Receive not Send
#define I2C_MSA_SA_S            1

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SOAR register.
//
//*****************************************************************************
#define I2C_SOAR_OAR_M          0x0000007F  // I2C Slave Own Address
#define I2C_SOAR_OAR_S          0

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SCSR register.
//
//*****************************************************************************
#define I2C_SCSR_FBR            0x00000004  // First Byte Received
#define I2C_SCSR_TREQ           0x00000002  // Transmit Request
#define I2C_SCSR_DA             0x00000001  // Device Active
#define I2C_SCSR_RREQ           0x00000001  // Receive Request

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MCS register.
//
//*****************************************************************************
#define I2C_MCS_BUSBSY          0x00000040  // Bus Busy
#define I2C_MCS_IDLE            0x00000020  // I2C Idle
#define I2C_MCS_ARBLST          0x00000010  // Arbitration Lost
#define I2C_MCS_ACK             0x00000008  // Data Acknowledge Enable
#define I2C_MCS_DATACK          0x00000008  // Acknowledge Data
#define I2C_MCS_ADRACK          0x00000004  // Acknowledge Address
#define I2C_MCS_STOP            0x00000004  // Generate STOP
#define I2C_MCS_START           0x00000002  // Generate START
#define I2C_MCS_ERROR           0x00000002  // Error
#define I2C_MCS_RUN             0x00000001  // I2C Master Enable
#define I2C_MCS_BUSY            0x00000001  // I2C Busy

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SDR register.
//
//*****************************************************************************
#define I2C_SDR_DATA_M          0x000000FF  // Data for Transfer
#define I2C_SDR_DATA_S          0

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MDR register.
//
//*****************************************************************************
#define I2C_MDR_DATA_M          0x000000FF  // Data Transferred
#define I2C_MDR_DATA_S          0

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MTPR register.
//
//*****************************************************************************
#define I2C_MTPR_TPR_M          0x000000FF  // SCL Clock Period
#define I2C_MTPR_TPR_S          0

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SIMR register.
//
//*****************************************************************************
#define I2C_SIMR_STOPIM         0x00000004  // Stop Condition Interrupt Mask
#define I2C_SIMR_STARTIM        0x00000002  // Start Condition Interrupt Mask
#define I2C_SIMR_DATAIM         0x00000001  // Data Interrupt Mask

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SRIS register.
//
//*****************************************************************************
#define I2C_SRIS_STOPRIS        0x00000004  // Stop Condition Raw Interrupt
                                            // Status
#define I2C_SRIS_STARTRIS       0x00000002  // Start Condition Raw Interrupt
                                            // Status
#define I2C_SRIS_DATARIS        0x00000001  // Data Raw Interrupt Status

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MIMR register.
//
//*****************************************************************************
#define I2C_MIMR_IM             0x00000001  // Interrupt Mask

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MRIS register.
//
//*****************************************************************************
#define I2C_MRIS_RIS            0x00000001  // Raw Interrupt Status

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SMIS register.
//
//*****************************************************************************
#define I2C_SMIS_STOPMIS        0x00000004  // Stop Condition Masked Interrupt
                                            // Status
#define I2C_SMIS_STARTMIS       0x00000002  // Start Condition Masked Interrupt
                                            // Status
#define I2C_SMIS_DATAMIS        0x00000001  // Data Masked Interrupt Status

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_SICR register.
//
//*****************************************************************************
#define I2C_SICR_STOPIC         0x00000004  // Stop Condition Interrupt Clear
#define I2C_SICR_STARTIC        0x00000002  // Start Condition Interrupt Clear
#define I2C_SICR_DATAIC         0x00000001  // Data Clear Interrupt

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MMIS register.
//
//*****************************************************************************
#define I2C_MMIS_MIS            0x00000001  // Masked Interrupt Status

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MICR register.
//
//*****************************************************************************
#define I2C_MICR_IC             0x00000001  // Interrupt Clear

//*****************************************************************************
//
// The following are defines for the bit fields in the I2C_O_MCR register.
//
//*****************************************************************************
#define I2C_MCR_SFE             0x00000020  // I2C Slave Function Enable
#define I2C_MCR_MFE             0x00000010  // I2C Master Function Enable
#define I2C_MCR_LPBK            0x00000001  // I2C Loopback

//*****************************************************************************
//
// The following definitions are deprecated.
//
//*****************************************************************************
#ifndef DEPRECATED