Fri, 20 Mar 2015 16:56:07 +0100
Added support for all 1-wire temperature sensors that are in the Linux kernel source.
/***************************************************************************** * Copyright (C) 2015 * * Michiel Broek <mbroek at mbse dot eu> * * This file is part of the mbsePi-apps * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * mbsePi-apps is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with ThermFerm; see the file COPYING. If not, write to the Free * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *****************************************************************************/ #include "thermferm.h" #include "pid.h" double UpdatePID(pid_var *pid, double error, double position) { double pTerm, dTerm, iTerm; pTerm = pid->pGain * error; /* * Calculate the integral state with appopriate limiting */ pid->iState += error; if (pid->iState > pid->iMax) pid->iState = pid->iMax; else if (pid->iState < pid->iMin) pid->iState = pid->iMin; iTerm = pid->iGain * pid->iState; dTerm = pid->dGain * (pid->dState - position); pid->dState = position; return pTerm + dTerm + iTerm; }