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56 lines
1.3 KiB
56 lines
1.3 KiB
2 years ago
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//
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// midipin.cpp
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//
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// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
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// Copyright (C) 2022 The MiniDexed Team
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include "midipin.h"
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#include <circle/logger.h>
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#include <assert.h>
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LOGMODULE ("midipin");
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CMIDIPin::CMIDIPin (unsigned nPinNumber)
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: m_nPinNumber (nPinNumber),
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m_nValue (HIGH)
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{
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}
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CMIDIPin::~CMIDIPin (void)
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{
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}
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unsigned CMIDIPin::Read (void)
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{
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return m_nValue;
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}
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void CMIDIPin::Write (unsigned nValue)
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{
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// Takes values in the MIDI controller range 0 to 127
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// and OFF < 64 < ON.
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// Simulates a PULLUP IO pin, so "true" is LOW (0)
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if (nValue >= 64) {
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// "on"
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m_nValue = LOW;
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} else {
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// "off"
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m_nValue = HIGH;
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}
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return;
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}
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