66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/****************************************************************************
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* boards/xtensa/esp32/common/src/esp32_qencoder.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/sensors/qencoder.h>
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#include <arch/board/board.h>
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#include "esp32_qencoder.h"
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#include "chip.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_qencoder_initialize
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*
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* Description:
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* Initialize the quadrature encoder driver for the given timer
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*
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****************************************************************************/
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int board_qencoder_initialize(int devno, int pcntno)
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{
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int ret;
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char devpath[12];
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/* Initialize a quadrature encoder interface. */
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sninfo("Initializing the quadrature encoder using PCNT%d\n", pcntno);
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snprintf(devpath, sizeof(devpath), "/dev/qe%d", devno);
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ret = esp32_qeinitialize(devpath, pcntno);
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if (ret < 0)
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{
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snerr("ERROR: esp32_qeinitialize failed: %d\n", ret);
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}
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return ret;
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}
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