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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_LM3S811_GCC/] [hw_include/] [qei.h] - Rev 599
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//***************************************************************************** // // qei.h - Prototypes for the Quadrature Encoder Driver. // // 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 991 of the Stellaris Driver Library. // //***************************************************************************** #ifndef __QEI_H__ #define __QEI_H__ #ifdef __cplusplus extern "C" { #endif //***************************************************************************** // // Values that can be passed to QEIConfigure as the ulConfig paramater. // //***************************************************************************** #define QEI_CONFIG_CAPTURE_A 0x00000000 // Count on ChA edges only #define QEI_CONFIG_CAPTURE_A_B 0x00000008 // Count on ChA and ChB edges #define QEI_CONFIG_NO_RESET 0x00000000 // Do not reset on index pulse #define QEI_CONFIG_RESET_IDX 0x00000010 // Reset position on index pulse #define QEI_CONFIG_QUADRATURE 0x00000000 // ChA and ChB are quadrature #define QEI_CONFIG_CLOCK_DIR 0x00000004 // ChA and ChB are clock and dir #define QEI_CONFIG_NO_SWAP 0x00000000 // Do not swap ChA and ChB #define QEI_CONFIG_SWAP 0x00000002 // Swap ChA and ChB //***************************************************************************** // // Values that can be passed to QEIVelocityConfigure as the ulPreDiv parameter. // //***************************************************************************** #define QEI_VELDIV_1 0x00000000 // Predivide by 1 #define QEI_VELDIV_2 0x00000040 // Predivide by 2 #define QEI_VELDIV_4 0x00000080 // Predivide by 4 #define QEI_VELDIV_8 0x000000C0 // Predivide by 8 #define QEI_VELDIV_16 0x00000100 // Predivide by 16 #define QEI_VELDIV_32 0x00000140 // Predivide by 32 #define QEI_VELDIV_64 0x00000180 // Predivide by 64 #define QEI_VELDIV_128 0x000001C0 // Predivide by 128 //***************************************************************************** // // Values that can be passed to QEIEnableInts, QEIDisableInts, and QEIClearInts // as the ulIntFlags parameter, and returned by QEIGetIntStatus. // //***************************************************************************** #define QEI_INTERROR 0x00000008 // Phase error detected #define QEI_INTDIR 0x00000004 // Direction change #define QEI_INTTIMER 0x00000002 // Velocity timer expired #define QEI_INTINDEX 0x00000001 // Index pulse detected //***************************************************************************** // // Prototypes for the APIs. // //***************************************************************************** extern void QEIEnable(unsigned long ulBase); extern void QEIDisable(unsigned long ulBase); extern void QEIConfigure(unsigned long ulBase, unsigned long ulConfig, unsigned long ulMaxPosition); extern unsigned long QEIPositionGet(unsigned long ulBase); extern void QEIPositionSet(unsigned long ulBase, unsigned long ulPosition); extern long QEIDirectionGet(unsigned long ulBase); extern tBoolean QEIErrorGet(unsigned long ulBase); extern void QEIVelocityEnable(unsigned long ulBase); extern void QEIVelocityDisable(unsigned long ulBase); extern void QEIVelocityConfigure(unsigned long ulBase, unsigned long ulPreDiv, unsigned long ulPeriod); extern unsigned long QEIVelocityGet(unsigned long ulBase); extern void QEIIntRegister(unsigned long ulBase, void (*pfnHandler)(void)); extern void QEIIntUnregister(unsigned long ulBase); extern void QEIIntEnable(unsigned long ulBase, unsigned long ulIntFlags); extern void QEIIntDisable(unsigned long ulBase, unsigned long ulIntFlags); extern unsigned long QEIIntStatus(unsigned long ulBase, tBoolean bMasked); extern void QEIIntClear(unsigned long ulBase, unsigned long ulIntFlags); #ifdef __cplusplus } #endif #endif // __QEI_H__
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