/**************************************************************************** * boards/xtensa/esp32s2/common/include/esp32s2_max6675.h * * SPDX-License-Identifier: Apache-2.0 * * 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. * ****************************************************************************/ /**************************************************************************** * Name: board_max6675_initialize * * Description: * Initialize and register the MAX6675 Temperature Sensor driver. * * Input Parameters: * devno - The device number, used to build the device path as /dev/tempN * busno - The SPI bus number * * Returned Value: * Zero (OK) on success; a negated errno value on failure. * ****************************************************************************/ int board_max6675_initialize(int devno, int busno);