81 lines
3.6 KiB
C
81 lines
3.6 KiB
C
/***************************************************************************
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* Copyright (C) 2021 - 2023 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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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 <interfaces/audio.h>
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#include <interfaces/gpio.h>
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#include <hwconfig.h>
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static const uint8_t pathCompatibilityMatrix[9][9] =
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{
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// MIC-SPK MIC-RTX MIC-MCU RTX-SPK RTX-RTX RTX-MCU MCU-SPK MCU-RTX MCU-MCU
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{ 0 , 0 , 0 , 1 , 0 , 1 , 1 , 0 , 1 }, // MIC-RTX
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{ 0 , 0 , 0 , 0 , 1 , 1 , 0 , 1 , 1 }, // MIC-SPK
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{ 0 , 0 , 0 , 1 , 1 , 0 , 1 , 1 , 0 }, // MIC-MCU
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{ 0 , 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 }, // RTX-SPK
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{ 1 , 0 , 1 , 0 , 0 , 0 , 1 , 0 , 1 }, // RTX-RTX
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{ 1 , 1 , 0 , 0 , 0 , 0 , 1 , 1 , 0 }, // RTX-MCU
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{ 0 , 1 , 1 , 0 , 1 , 1 , 0 , 0 , 0 }, // MCU-SPK
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{ 1 , 0 , 1 , 1 , 0 , 1 , 0 , 0 , 0 }, // MCU-RTX
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{ 1 , 1 , 0 , 1 , 1 , 0 , 0 , 0 , 0 } // MCU-MCU
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};
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void audio_init()
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{
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gpio_setMode(SPK_MUTE, OUTPUT);
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gpio_setMode(MIC_MUTE, OUTPUT);
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gpio_setMode(MIC_GAIN, OUTPUT);
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gpio_setPin(SPK_MUTE); // Off = logic high
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gpio_clearPin(MIC_MUTE); // Off = logic low
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gpio_setPin(MIC_GAIN); // gain = 40 dB
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}
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void audio_terminate()
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{
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gpio_setPin(SPK_MUTE);
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gpio_clearPin(MIC_MUTE);
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}
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void audio_connect(const enum AudioSource source, const enum AudioSink sink)
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{
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if(source == SOURCE_MIC) gpio_setPin(MIC_MUTE);
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if(sink == SINK_SPK) gpio_clearPin(SPK_MUTE);
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}
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void audio_disconnect(const enum AudioSource source, const enum AudioSink sink)
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{
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if(source == SOURCE_MIC) gpio_clearPin(MIC_MUTE);
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if(sink == SINK_SPK) gpio_setPin(SPK_MUTE);
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}
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bool audio_checkPathCompatibility(const enum AudioSource p1Source,
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const enum AudioSink p1Sink,
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const enum AudioSource p2Source,
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const enum AudioSink p2Sink)
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{
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uint8_t p1Index = (p1Source * 3) + p1Sink;
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uint8_t p2Index = (p2Source * 3) + p2Sink;
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return pathCompatibilityMatrix[p1Index][p2Index] == 1;
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}
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