// // midipin.cpp // // MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi // Copyright (C) 2022 The MiniDexed Team // // This program 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 3 of the License, or // (at your option) any later version. // // This program 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 this program. If not, see . // #include "midipin.h" #include #include LOGMODULE ("midipin"); CMIDIPin::CMIDIPin (unsigned nPinNumber) : m_nPinNumber (nPinNumber), m_nValue (HIGH) { } CMIDIPin::~CMIDIPin (void) { } unsigned CMIDIPin::Read (void) { return m_nValue; } void CMIDIPin::Write (unsigned nValue) { // Takes values in the MIDI controller range 0 to 127 // and OFF < 64 < ON. // Simulates a PULLUP IO pin, so "true" is LOW (0) if (nValue >= 64) { // "on" m_nValue = LOW; } else { // "off" m_nValue = HIGH; } return; }