1 2 /* 3 // Copyright (c) 2018 Intel Corporation 4 // 5 // Licensed under the Apache License, Version 2.0 (the "License"); 6 // you may not use this file except in compliance with the License. 7 // You may obtain a copy of the License at 8 // 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 */ 17 18 #pragma once 19 20 #include <cstddef> 21 22 namespace pid_control 23 { 24 namespace ec 25 { 26 constexpr size_t maxStepwisePoints = 20; 27 28 struct StepwiseInfo 29 { 30 double ts; // sample time in seconds 31 double reading[maxStepwisePoints]; 32 double output[maxStepwisePoints]; 33 double positiveHysteresis; 34 double negativeHysteresis; 35 bool isCeiling; 36 }; 37 38 double stepwise(const ec::StepwiseInfo& info, double value); 39 40 } // namespace ec 41 } // namespace pid_control 42