/**************************************************************************** * boards/arm/stm32/common/src/stm32_qencoder.c * * 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include "chip.h" #include "arm_internal.h" #include "stm32_qencoder.h" /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: board_qencoder_initialize * * Description: * Initialize the quadrature encoder driver for the given timer * ****************************************************************************/ int board_qencoder_initialize(int devno, int timerno) { int ret; char devpath[12]; /* Initialize a quadrature encoder interface. */ sninfo("Initializing the quadrature encoder using TIM%d\n", timerno); snprintf(devpath, 12, "/dev/qe%d", devno); ret = stm32_qeinitialize(devpath, timerno); if (ret < 0) { snerr("ERROR: stm32_qeinitialize failed: %d\n", ret); } return ret; }