* arch/arm/src/imxrt/imxrt_enc.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM_SRC_IMXRT_IMXRT_ENC_H
#define __ARCH_ARM_SRC_IMXRT_IMXRT_ENC_H
* Included Files
****************************************************************************/
#include <nuttx/sensors/qencoder.h>
* Pre-processor Definitions
****************************************************************************/
#define QEIOC_POSDIFF _QEIOC(QE_IMXRT_FIRST)
#define QEIOC_REVOLUTION _QEIOC(QE_IMXRT_FIRST + 1)
#define QEIOC_RECONFIG _QEIOC(QE_IMXRT_FIRST + 2)
#define QEIOC_INITTO _QEIOC(QE_IMXRT_FIRST + 3)
#define QEIOC_RESETAT _QEIOC(QE_IMXRT_FIRST + 4)
#define QEIOC_RESETATMAX _QEIOC(QE_IMXRT_FIRST + 5)
#define QEIOC_TEST_GEN _QEIOC(QE_IMXRT_FIRST + 6)
* Public Function Prototypes
****************************************************************************/
* Name: imxrt_qeinitialize
*
* Description:
* Initialize a quadrature encoder interface. This function must be called
* from board-specific logic..
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/qe0"
* enc - The encoder peripheral to use.
* 'enc' must be an element of {1,2,3,4}
*
* Returned Value:
* Zero on success; A negated errno value is returned on failure.
*
****************************************************************************/
int imxrt_qeinitialize(const char *devpath, int enc);
#endif