66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/*
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* Copyright (C) EdgeTX
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*
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* Based on code named
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* opentx - https://github.com/opentx/opentx
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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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 version 2 as
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* published by the Free Software Foundation.
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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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#if !defined(SOFTWARE_VOLUME)
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#include "stm32_i2c_driver.h"
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#include "hal/i2c_driver.h"
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#include "hal/audio_driver.h"
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#include "board.h"
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static const uint8_t volumeScale[VOLUME_LEVEL_MAX + 1] = {
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0, 1, 2, 3, 5, 9, 13, 17, 22, 27, 33, 40,
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64, 82, 96, 105, 112, 117, 120, 122, 124, 125, 126, 127,
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};
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static int32_t read_i2c_volume()
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{
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uint8_t value = 0;
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if (i2c_read(VOLUME_I2C_BUS, VOLUME_I2C_ADDRESS, 0, 1, &value, 1) < 0)
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return -1;
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return value;
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}
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static void write_i2c_volume(uint8_t volume)
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{
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i2c_init(VOLUME_I2C_BUS);
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i2c_write(VOLUME_I2C_BUS, VOLUME_I2C_ADDRESS, 0, 1, &volume, 1);
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}
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void audioSetVolume(uint8_t volume)
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{
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if (volume > VOLUME_LEVEL_MAX) {
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volume = VOLUME_LEVEL_MAX;
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}
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write_i2c_volume(volumeScale[volume]);
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}
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int32_t getVolume()
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{
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return read_i2c_volume();
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}
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#endif
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