rt-thread-official/bsp/lm4f232/Libraries/inc/hw_qei.h

202 lines
9.6 KiB
C

//*****************************************************************************
//
// hw_qei.h - Macros used when accessing the QEI hardware.
//
// 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 Firmware Development Package.
//
//*****************************************************************************
#ifndef __HW_QEI_H__
#define __HW_QEI_H__
//*****************************************************************************
//
// The following are defines for the QEI register offsets.
//
//*****************************************************************************
#define QEI_O_CTL 0x00000000 // QEI Control
#define QEI_O_STAT 0x00000004 // QEI Status
#define QEI_O_POS 0x00000008 // QEI Position
#define QEI_O_MAXPOS 0x0000000C // QEI Maximum Position
#define QEI_O_LOAD 0x00000010 // QEI Timer Load
#define QEI_O_TIME 0x00000014 // QEI Timer
#define QEI_O_COUNT 0x00000018 // QEI Velocity Counter
#define QEI_O_SPEED 0x0000001C // QEI Velocity
#define QEI_O_INTEN 0x00000020 // QEI Interrupt Enable
#define QEI_O_RIS 0x00000024 // QEI Raw Interrupt Status
#define QEI_O_ISC 0x00000028 // QEI Interrupt Status and Clear
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_CTL register.
//
//*****************************************************************************
#define QEI_CTL_FILTCNT_M 0x000F0000 // Input Filter Prescale Count
#define QEI_CTL_FILTEN 0x00002000 // Enable Input Filter
#define QEI_CTL_STALLEN 0x00001000 // Stall QEI
#define QEI_CTL_INVI 0x00000800 // Invert Index Pulse
#define QEI_CTL_INVB 0x00000400 // Invert PhB
#define QEI_CTL_INVA 0x00000200 // Invert PhA
#define QEI_CTL_VELDIV_M 0x000001C0 // Predivide Velocity
#define QEI_CTL_VELDIV_1 0x00000000 // QEI clock /1
#define QEI_CTL_VELDIV_2 0x00000040 // QEI clock /2
#define QEI_CTL_VELDIV_4 0x00000080 // QEI clock /4
#define QEI_CTL_VELDIV_8 0x000000C0 // QEI clock /8
#define QEI_CTL_VELDIV_16 0x00000100 // QEI clock /16
#define QEI_CTL_VELDIV_32 0x00000140 // QEI clock /32
#define QEI_CTL_VELDIV_64 0x00000180 // QEI clock /64
#define QEI_CTL_VELDIV_128 0x000001C0 // QEI clock /128
#define QEI_CTL_VELEN 0x00000020 // Capture Velocity
#define QEI_CTL_RESMODE 0x00000010 // Reset Mode
#define QEI_CTL_CAPMODE 0x00000008 // Capture Mode
#define QEI_CTL_SIGMODE 0x00000004 // Signal Mode
#define QEI_CTL_SWAP 0x00000002 // Swap Signals
#define QEI_CTL_ENABLE 0x00000001 // Enable QEI
#define QEI_CTL_FILTCNT_S 16
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_STAT register.
//
//*****************************************************************************
#define QEI_STAT_DIRECTION 0x00000002 // Direction of Rotation
#define QEI_STAT_ERROR 0x00000001 // Error Detected
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_POS register.
//
//*****************************************************************************
#define QEI_POS_M 0xFFFFFFFF // Current Position Integrator
// Value
#define QEI_POS_S 0
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_MAXPOS register.
//
//*****************************************************************************
#define QEI_MAXPOS_M 0xFFFFFFFF // Maximum Position Integrator
// Value
#define QEI_MAXPOS_S 0
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_LOAD register.
//
//*****************************************************************************
#define QEI_LOAD_M 0xFFFFFFFF // Velocity Timer Load Value
#define QEI_LOAD_S 0
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_TIME register.
//
//*****************************************************************************
#define QEI_TIME_M 0xFFFFFFFF // Velocity Timer Current Value
#define QEI_TIME_S 0
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_COUNT register.
//
//*****************************************************************************
#define QEI_COUNT_M 0xFFFFFFFF // Velocity Pulse Count
#define QEI_COUNT_S 0
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_SPEED register.
//
//*****************************************************************************
#define QEI_SPEED_M 0xFFFFFFFF // Velocity
#define QEI_SPEED_S 0
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_INTEN register.
//
//*****************************************************************************
#define QEI_INTEN_ERROR 0x00000008 // Phase Error Interrupt Enable
#define QEI_INTEN_DIR 0x00000004 // Direction Change Interrupt
// Enable
#define QEI_INTEN_TIMER 0x00000002 // Timer Expires Interrupt Enable
#define QEI_INTEN_INDEX 0x00000001 // Index Pulse Detected Interrupt
// Enable
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_RIS register.
//
//*****************************************************************************
#define QEI_RIS_ERROR 0x00000008 // Phase Error Detected
#define QEI_RIS_DIR 0x00000004 // Direction Change Detected
#define QEI_RIS_TIMER 0x00000002 // Velocity Timer Expired
#define QEI_RIS_INDEX 0x00000001 // Index Pulse Asserted
//*****************************************************************************
//
// The following are defines for the bit fields in the QEI_O_ISC register.
//
//*****************************************************************************
#define QEI_ISC_ERROR 0x00000008 // Phase Error Interrupt
#define QEI_ISC_DIR 0x00000004 // Direction Change Interrupt
#define QEI_ISC_TIMER 0x00000002 // Velocity Timer Expired Interrupt
#define QEI_ISC_INDEX 0x00000001 // Index Pulse Interrupt
//*****************************************************************************
//
// The following definitions are deprecated.
//
//*****************************************************************************
#ifndef DEPRECATED
//*****************************************************************************
//
// The following are deprecated defines for the bit fields in the QEI_ISC
// register.
//
//*****************************************************************************
#define QEI_INT_ERROR 0x00000008 // Phase error detected
#define QEI_INT_DIR 0x00000004 // Direction change
#define QEI_INT_TIMER 0x00000002 // Velocity timer expired
#define QEI_INT_INDEX 0x00000001 // Index pulse detected
//*****************************************************************************
//
// The following are deprecated defines for the reset values for the QEI
// registers.
//
//*****************************************************************************
#define QEI_RV_POS 0x00000000 // Current position register
#define QEI_RV_LOAD 0x00000000 // Velocity timer load register
#define QEI_RV_CTL 0x00000000 // Configuration and control reg
#define QEI_RV_RIS 0x00000000 // Raw interrupt status register
#define QEI_RV_ISC 0x00000000 // Interrupt status register
#define QEI_RV_SPEED 0x00000000 // Velocity speed register
#define QEI_RV_INTEN 0x00000000 // Interrupt enable register
#define QEI_RV_STAT 0x00000000 // Status register
#define QEI_RV_COUNT 0x00000000 // Velocity pulse count register
#define QEI_RV_MAXPOS 0x00000000 // Maximum position register
#define QEI_RV_TIME 0x00000000 // Velocity timer register
#endif
#endif // __HW_QEI_H__