LPC1700CMSIS Standard Peripheral Firmware Library: C:/nxpdrv/LPC1700CMSIS/Drivers/source/lpc17xx_qei.c File Reference

LPC1700CMSIS

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C:/nxpdrv/LPC1700CMSIS/Drivers/source/lpc17xx_qei.c File Reference

: Contains all functions support for QEI firmware library on LPC17xx More...

#include "lpc17xx_qei.h" #include "lpc17xx_clkpwr.h"
#include "lpc17xx_libcfg_default.h"

Go to the source code of this file.


Data Structures

union  QEI_CFGOPT_Type
 QEI configuration union type definition. More...

Functions

void QEI_Reset (LPC_QEI_TypeDef *QEIx, uint32_t ulResetType)
 Resets value for each type of QEI value, such as velocity, counter, position, etc..
void QEI_Init (LPC_QEI_TypeDef *QEIx, QEI_CFG_Type *QEI_ConfigStruct)
 Initializes the QEI peripheral according to the specified parameters in the QEI_ConfigStruct.
void QEI_DeInit (LPC_QEI_TypeDef *QEIx)
 De-initializes the QEI peripheral registers to their default reset values.
void QEI_ConfigStructInit (QEI_CFG_Type *QIE_InitStruct)
 Fills each QIE_InitStruct member with its default value:
  • DirectionInvert = QEI_DIRINV_NONE
  • SignalMode = QEI_SIGNALMODE_QUAD
  • CaptureMode = QEI_CAPMODE_4X
  • InvertIndex = QEI_INVINX_NONE.

FlagStatus QEI_GetStatus (LPC_QEI_TypeDef *QEIx, uint32_t ulFlagType)
 Check whether if specified flag status is set or not.
uint32_t QEI_GetPosition (LPC_QEI_TypeDef *QEIx)
 Get current position value in QEI peripheral.
void QEI_SetMaxPosition (LPC_QEI_TypeDef *QEIx, uint32_t ulMaxPos)
 Set max position value for QEI peripheral.
void QEI_SetPositionComp (LPC_QEI_TypeDef *QEIx, uint8_t bPosCompCh, uint32_t ulPosComp)
 Set position compare value for QEI peripheral.
uint32_t QEI_GetIndex (LPC_QEI_TypeDef *QEIx)
 Get current index counter of QEI peripheral.
void QEI_SetIndexComp (LPC_QEI_TypeDef *QEIx, uint32_t ulIndexComp)
 Set value for index compare in QEI peripheral.
void QEI_SetTimerReload (LPC_QEI_TypeDef *QEIx, QEI_RELOADCFG_Type *QEIReloadStruct)
 Set timer reload value for QEI peripheral. When the velocity timer is over-flow, the value that set for Timer Reload register will be loaded into the velocity timer for next period. The calculated velocity in RPM therefore will be affect by this value.
uint32_t QEI_GetTimer (LPC_QEI_TypeDef *QEIx)
 Get current timer counter in QEI peripheral.
uint32_t QEI_GetVelocity (LPC_QEI_TypeDef *QEIx)
 Get current velocity pulse counter in current time period.
uint32_t QEI_GetVelocityCap (LPC_QEI_TypeDef *QEIx)
 Get the most recently measured velocity of the QEI. When the Velocity timer in QEI is over-flow, the current velocity value will be loaded into Velocity Capture register.
void QEI_SetVelocityComp (LPC_QEI_TypeDef *QEIx, uint32_t ulVelComp)
 Set Velocity Compare value for QEI peripheral.
void QEI_SetDigiFilter (LPC_QEI_TypeDef *QEIx, uint32_t ulSamplingPulse)
 Set value of sampling count for the digital filter in QEI peripheral.
FlagStatus QEI_GetIntStatus (LPC_QEI_TypeDef *QEIx, uint32_t ulIntType)
 Check whether if specified interrupt flag status in QEI peripheral is set or not.
void QEI_IntCmd (LPC_QEI_TypeDef *QEIx, uint32_t ulIntType, FunctionalState NewState)
 Enable/Disable specified interrupt in QEI peripheral.
void QEI_IntSet (LPC_QEI_TypeDef *QEIx, uint32_t ulIntType)
 Sets (forces) specified interrupt in QEI peripheral.
void QEI_IntClear (LPC_QEI_TypeDef *QEIx, uint32_t ulIntType)
 Clear (force) specified interrupt (pending) in QEI peripheral.
uint32_t QEI_CalculateRPM (LPC_QEI_TypeDef *QEIx, uint32_t ulVelCapValue, uint32_t ulPPR)
 Calculates the actual velocity in RPM passed via velocity capture value and Pulse Per Round (of the encoder) value parameter input.

Detailed Description

: Contains all functions support for QEI firmware library on LPC17xx

Version:
: 1.0
Date:
: 26. May. 2009
Author:
: HieuNguyen
Software that is described herein is for illustrative purposes only which provides customers with programming information regarding the products. This software is supplied "AS IS" without any warranties. NXP Semiconductors assumes no responsibility or liability for the use of the software, conveys no license or title under any patent, copyright, or mask work right to the product. NXP Semiconductors reserves the right to make changes in the software without notification. NXP Semiconductors also make no representation or warranty that such application will be suitable for the specified use without further testing or modification.

Definition in file lpc17xx_qei.c.

Generated on Mon Feb 8 10:01:42 2010 for LPC1700CMSIS Standard Peripheral Firmware Library by  doxygen 1.5.9
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