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//*****************************************************************************
//
// hw_i2c.h - Macros used when accessing the I2C master and slave 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_I2C_H__
#define __HW_I2C_H__
//*****************************************************************************
//
// The following defines the offset between the I2C master and slave registers.
//
//*****************************************************************************
#define I2C_O_SLAVE 0x00000800 // Offset from master to slave
//*****************************************************************************
//
// The following define the offsets of the I2C master registers.
//
//*****************************************************************************
#define I2C_MASTER_O_SA 0x00000000 // Slave address register
#define I2C_MASTER_O_CS 0x00000004 // Control and Status register
#define I2C_MASTER_O_DR 0x00000008 // Data register
#define I2C_MASTER_O_TPR 0x0000000C // Timer period register
#define I2C_MASTER_O_IMR 0x00000010 // Interrupt mask register
#define I2C_MASTER_O_RIS 0x00000014 // Raw interrupt status register
#define I2C_MASTER_O_MIS 0x00000018 // Masked interrupt status reg
#define I2C_MASTER_O_MICR 0x0000001c // Interrupt clear register
#define I2C_MASTER_O_CR 0x00000020 // Configuration register
//*****************************************************************************
//
// The following define the offsets of the I2C slave registers.
//
//*****************************************************************************
#define I2C_SLAVE_O_OAR 0x00000000 // Own address register
#define I2C_SLAVE_O_CSR 0x00000004 // Control/Status register
#define I2C_SLAVE_O_DR 0x00000008 // Data register
#define I2C_SLAVE_O_IM 0x0000000C // Interrupt mask register
#define I2C_SLAVE_O_RIS 0x00000010 // Raw interrupt status register
#define I2C_SLAVE_O_MIS 0x00000014 // Masked interrupt status reg
#define I2C_SLAVE_O_SICR 0x00000018 // Interrupt clear register
//*****************************************************************************
//
// The followng define the bit fields in the I2C master slave address register.
//
//*****************************************************************************
#define I2C_MASTER_SA_SA_MASK 0x000000FE // Slave address
#define I2C_MASTER_SA_RS 0x00000001 // Receive/send
#define I2C_MASTER_SA_SA_SHIFT 1
//*****************************************************************************
//
// The following define the bit fields in the I2C Master Control and Status
// register.
//
//*****************************************************************************
#define I2C_MASTER_CS_ACK 0x00000008 // Acknowlegde
#define I2C_MASTER_CS_STOP 0x00000004 // Stop
#define I2C_MASTER_CS_START 0x00000002 // Start
#define I2C_MASTER_CS_RUN 0x00000001 // Run
#define I2C_MASTER_CS_BUS_BUSY 0x00000040 // Bus busy
#define I2C_MASTER_CS_IDLE 0x00000020 // Idle
#define I2C_MASTER_CS_ARB_LOST 0x00000010 // Lost arbitration
#define I2C_MASTER_CS_DATA_ACK 0x00000008 // Data byte not acknowledged
#define I2C_MASTER_CS_ADDR_ACK 0x00000004 // Address byte not acknowledged
#define I2C_MASTER_CS_ERROR 0x00000002 // Error occurred
#define I2C_MASTER_CS_BUSY 0x00000001 // Controller is TX/RX data
#define I2C_MASTER_CS_ERR_MASK 0x0000001C
//*****************************************************************************
//
// The following define values used in determining the contents of the I2C
// Master Timer Period register.
//
//*****************************************************************************
#define I2C_MASTER_TPR_SCL_HP 0x00000004 // SCL high period
#define I2C_MASTER_TPR_SCL_LP 0x00000006 // SCL low period
#define I2C_MASTER_TPR_SCL (I2C_MASTER_TPR_SCL_HP + I2C_MASTER_TPR_SCL_LP)
#define I2C_SCL_STANDARD 100000 // SCL standard frequency
#define I2C_SCL_FAST 400000 // SCL fast frequency
//*****************************************************************************
//
// The following define the bit fields in the I2C Master Interrupt Mask
// register.
//
//*****************************************************************************
#define I2C_MASTER_IMR_IM 0x00000001 // Master interrupt mask
//*****************************************************************************
//
// The following define the bit fields in the I2C Master Raw Interrupt Status
// register.
//
//*****************************************************************************
#define I2C_MASTER_RIS_RIS 0x00000001 // Master raw interrupt status
//*****************************************************************************
//
// The following define the bit fields in the I2C Master Masked Interrupt
// Status register.
//
//*****************************************************************************
#define I2C_MASTER_MIS_MIS 0x00000001 // Master masked interrupt status
//*****************************************************************************
//
// The following define the bit fields in the I2C Master Interrupt Clear
// register.
//
//*****************************************************************************
#define I2C_MASTER_MICR_IC 0x00000001 // Master interrupt clear
//*****************************************************************************
//
// The following define the bit fields in the I2C Master Configuration
// register.
//
//*****************************************************************************
#define I2C_MASTER_CR_SFE 0x00000020 // Slave function enable
#define I2C_MASTER_CR_MFE 0x00000010 // Master function enable
#define I2C_MASTER_CR_LPBK 0x00000001 // Loopback enable
//*****************************************************************************
//
// The following define the bit fields in the I2C Slave Own Address register.
//
//*****************************************************************************
#define I2C_SLAVE_SOAR_OAR_MASK 0x0000007F // Slave address
//*****************************************************************************
//
// The following define the bit fields in the I2C Slave Control/Status
// register.
//
//*****************************************************************************
#define I2C_SLAVE_CSR_DA 0x00000001 // Enable the device
#define I2C_SLAVE_CSR_TREQ 0x00000002 // Transmit request received
#define I2C_SLAVE_CSR_RREQ 0x00000001 // Receive data from I2C master
//*****************************************************************************
//
// The following define the bit fields in the I2C Slave Interrupt Mask
// register.
//
//*****************************************************************************
#define I2C_SLAVE_IMR_IM 0x00000001 // Slave interrupt mask
//*****************************************************************************
//
// The following define the bit fields in the I2C Slave Raw Interrupt Status
// register.
//
//*****************************************************************************
#define I2C_SLAVE_RIS_RIS 0x00000001 // Slave raw interrupt status
//*****************************************************************************
//
// The following define the bit fields in the I2C Slave Masked Interrupt
// Status register.
//
//*****************************************************************************
#define I2C_SLAVE_MIS_MIS 0x00000001 // Slave masked interrupt status
//*****************************************************************************
//
// The following define the bit fields in the I2C Slave Interrupt Clear
// register.
//
//*****************************************************************************
#define I2C_SLAVE_SICR_IC 0x00000001 // Slave interrupt clear
#endif // __HW_I2C_H__
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