294 lines
15 KiB
C
294 lines
15 KiB
C
//*****************************************************************************
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//
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// hw_i2c.h - Macros used when accessing the I2C master and slave hardware.
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//
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// Copyright (c) 2005-2013 Texas Instruments Incorporated. All rights reserved.
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// Software License Agreement
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the
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// distribution.
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//
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// Neither the name of Texas Instruments Incorporated nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// This is part of revision 1.1 of the Tiva Firmware Development Package.
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//
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//*****************************************************************************
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#ifndef __HW_I2C_H__
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#define __HW_I2C_H__
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//*****************************************************************************
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//
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// The following are defines for the I2C register offsets.
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//
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//*****************************************************************************
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#define I2C_O_MSA 0x00000000 // I2C Master Slave Address
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#define I2C_O_MCS 0x00000004 // I2C Master Control/Status
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#define I2C_O_MDR 0x00000008 // I2C Master Data
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#define I2C_O_MTPR 0x0000000C // I2C Master Timer Period
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#define I2C_O_MIMR 0x00000010 // I2C Master Interrupt Mask
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#define I2C_O_MRIS 0x00000014 // I2C Master Raw Interrupt Status
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#define I2C_O_MMIS 0x00000018 // I2C Master Masked Interrupt
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// Status
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#define I2C_O_MICR 0x0000001C // I2C Master Interrupt Clear
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#define I2C_O_MCR 0x00000020 // I2C Master Configuration
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#define I2C_O_MCLKOCNT 0x00000024 // I2C Master Clock Low Timeout
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// Count
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#define I2C_O_MBMON 0x0000002C // I2C Master Bus Monitor
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#define I2C_O_MCR2 0x00000038 // I2C Master Configuration 2
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#define I2C_O_SOAR 0x00000800 // I2C Slave Own Address
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#define I2C_O_SCSR 0x00000804 // I2C Slave Control/Status
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#define I2C_O_SDR 0x00000808 // I2C Slave Data
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#define I2C_O_SIMR 0x0000080C // I2C Slave Interrupt Mask
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#define I2C_O_SRIS 0x00000810 // I2C Slave Raw Interrupt Status
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#define I2C_O_SMIS 0x00000814 // I2C Slave Masked Interrupt
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// Status
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#define I2C_O_SICR 0x00000818 // I2C Slave Interrupt Clear
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#define I2C_O_SOAR2 0x0000081C // I2C Slave Own Address 2
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#define I2C_O_SACKCTL 0x00000820 // I2C Slave ACK Control
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#define I2C_O_PP 0x00000FC0 // I2C Peripheral Properties
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#define I2C_O_PC 0x00000FC4 // I2C Peripheral Configuration
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MSA register.
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//
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//*****************************************************************************
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#define I2C_MSA_SA_M 0x000000FE // I2C Slave Address
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#define I2C_MSA_RS 0x00000001 // Receive not send
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#define I2C_MSA_SA_S 1
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MCS register.
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//
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//*****************************************************************************
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#define I2C_MCS_CLKTO 0x00000080 // Clock Timeout Error
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#define I2C_MCS_BUSBSY 0x00000040 // Bus Busy
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#define I2C_MCS_IDLE 0x00000020 // I2C Idle
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#define I2C_MCS_ARBLST 0x00000010 // Arbitration Lost
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#define I2C_MCS_HS 0x00000010 // High-Speed Enable
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#define I2C_MCS_ACK 0x00000008 // Data Acknowledge Enable
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#define I2C_MCS_DATACK 0x00000008 // Acknowledge Data
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#define I2C_MCS_ADRACK 0x00000004 // Acknowledge Address
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#define I2C_MCS_STOP 0x00000004 // Generate STOP
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#define I2C_MCS_ERROR 0x00000002 // Error
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#define I2C_MCS_START 0x00000002 // Generate START
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#define I2C_MCS_RUN 0x00000001 // I2C Master Enable
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#define I2C_MCS_BUSY 0x00000001 // I2C Busy
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MDR register.
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//
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//*****************************************************************************
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#define I2C_MDR_DATA_M 0x000000FF // Data Transferred
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#define I2C_MDR_DATA_S 0
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MTPR register.
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//
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//*****************************************************************************
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#define I2C_MTPR_HS 0x00000080 // High-Speed Enable
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#define I2C_MTPR_TPR_M 0x0000007F // Timer Period
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#define I2C_MTPR_TPR_S 0
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MIMR register.
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//
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//*****************************************************************************
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#define I2C_MIMR_CLKIM 0x00000002 // Clock Timeout Interrupt Mask
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#define I2C_MIMR_IM 0x00000001 // Master Interrupt Mask
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MRIS register.
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//
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//*****************************************************************************
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#define I2C_MRIS_CLKRIS 0x00000002 // Clock Timeout Raw Interrupt
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// Status
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#define I2C_MRIS_RIS 0x00000001 // Master Raw Interrupt Status
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MMIS register.
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//
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//*****************************************************************************
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#define I2C_MMIS_CLKMIS 0x00000002 // Clock Timeout Masked Interrupt
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// Status
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#define I2C_MMIS_MIS 0x00000001 // Masked Interrupt Status
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MICR register.
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//
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//*****************************************************************************
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#define I2C_MICR_CLKIC 0x00000002 // Clock Timeout Interrupt Clear
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#define I2C_MICR_IC 0x00000001 // Master Interrupt Clear
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MCR register.
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//
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//*****************************************************************************
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#define I2C_MCR_GFE 0x00000040 // I2C Glitch Filter Enable
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#define I2C_MCR_SFE 0x00000020 // I2C Slave Function Enable
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#define I2C_MCR_MFE 0x00000010 // I2C Master Function Enable
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#define I2C_MCR_LPBK 0x00000001 // I2C Loopback
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MCLKOCNT register.
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//
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//*****************************************************************************
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#define I2C_MCLKOCNT_CNTL_M 0x000000FF // I2C Master Count
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#define I2C_MCLKOCNT_CNTL_S 0
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MBMON register.
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//
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//*****************************************************************************
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#define I2C_MBMON_SDA 0x00000002 // I2C SDA Status
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#define I2C_MBMON_SCL 0x00000001 // I2C SCL Status
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_MCR2 register.
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//
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//*****************************************************************************
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#define I2C_MCR2_GFPW_M 0x00000070 // I2C Glitch Filter Pulse Width
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#define I2C_MCR2_GFPW_BYPASS 0x00000000 // Bypass
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#define I2C_MCR2_GFPW_1 0x00000010 // 1 clock
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#define I2C_MCR2_GFPW_2 0x00000020 // 2 clocks
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#define I2C_MCR2_GFPW_3 0x00000030 // 3 clocks
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#define I2C_MCR2_GFPW_4 0x00000040 // 4 clocks
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#define I2C_MCR2_GFPW_8 0x00000050 // 8 clocks
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#define I2C_MCR2_GFPW_16 0x00000060 // 16 clocks
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#define I2C_MCR2_GFPW_32 0x00000070 // 32 clocks
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SOAR register.
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//
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//*****************************************************************************
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#define I2C_SOAR_OAR_M 0x0000007F // I2C Slave Own Address
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#define I2C_SOAR_OAR_S 0
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SCSR register.
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//
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//*****************************************************************************
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#define I2C_SCSR_OAR2SEL 0x00000008 // OAR2 Address Matched
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#define I2C_SCSR_FBR 0x00000004 // First Byte Received
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#define I2C_SCSR_TREQ 0x00000002 // Transmit Request
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#define I2C_SCSR_DA 0x00000001 // Device Active
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#define I2C_SCSR_RREQ 0x00000001 // Receive Request
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SDR register.
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//
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//*****************************************************************************
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#define I2C_SDR_DATA_M 0x000000FF // Data for Transfer
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#define I2C_SDR_DATA_S 0
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SIMR register.
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//
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//*****************************************************************************
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#define I2C_SIMR_STOPIM 0x00000004 // Stop Condition Interrupt Mask
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#define I2C_SIMR_STARTIM 0x00000002 // Start Condition Interrupt Mask
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#define I2C_SIMR_DATAIM 0x00000001 // Data Interrupt Mask
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SRIS register.
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//
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//*****************************************************************************
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#define I2C_SRIS_STOPRIS 0x00000004 // Stop Condition Raw Interrupt
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// Status
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#define I2C_SRIS_STARTRIS 0x00000002 // Start Condition Raw Interrupt
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// Status
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#define I2C_SRIS_DATARIS 0x00000001 // Data Raw Interrupt Status
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SMIS register.
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//
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//*****************************************************************************
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#define I2C_SMIS_STOPMIS 0x00000004 // Stop Condition Masked Interrupt
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// Status
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#define I2C_SMIS_STARTMIS 0x00000002 // Start Condition Masked Interrupt
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// Status
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#define I2C_SMIS_DATAMIS 0x00000001 // Data Masked Interrupt Status
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SICR register.
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//
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//*****************************************************************************
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#define I2C_SICR_STOPIC 0x00000004 // Stop Condition Interrupt Clear
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#define I2C_SICR_STARTIC 0x00000002 // Start Condition Interrupt Clear
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#define I2C_SICR_DATAIC 0x00000001 // Data Interrupt Clear
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SOAR2 register.
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//
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//*****************************************************************************
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#define I2C_SOAR2_OAR2EN 0x00000080 // I2C Slave Own Address 2 Enable
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#define I2C_SOAR2_OAR2_M 0x0000007F // I2C Slave Own Address 2
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#define I2C_SOAR2_OAR2_S 0
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_SACKCTL register.
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//
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//*****************************************************************************
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#define I2C_SACKCTL_ACKOVAL 0x00000002 // I2C Slave ACK Override Value
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#define I2C_SACKCTL_ACKOEN 0x00000001 // I2C Slave ACK Override Enable
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_PP register.
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//
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//*****************************************************************************
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#define I2C_PP_HS 0x00000001 // High-Speed Capable
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//*****************************************************************************
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//
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// The following are defines for the bit fields in the I2C_O_PC register.
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//
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//*****************************************************************************
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#define I2C_PC_HS 0x00000001 // High-Speed Capable
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#endif // __HW_I2C_H__
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