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Diffstat (limited to 'quantum/audio/driver_chibios_dac.h')
-rw-r--r-- | quantum/audio/driver_chibios_dac.h | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/quantum/audio/driver_chibios_dac.h b/quantum/audio/driver_chibios_dac.h deleted file mode 100644 index 07cd622ead..0000000000 --- a/quantum/audio/driver_chibios_dac.h +++ /dev/null @@ -1,126 +0,0 @@ -/* Copyright 2019 Jack Humbert - * Copyright 2020 JohSchneider - * - * 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 2 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 <http://www.gnu.org/licenses/>. - */ -#pragma once - -#ifndef A4 -# define A4 PAL_LINE(GPIOA, 4) -#endif -#ifndef A5 -# define A5 PAL_LINE(GPIOA, 5) -#endif - -/** - * Size of the dac_buffer arrays. All must be the same size. - */ -#define AUDIO_DAC_BUFFER_SIZE 256U - -/** - * Highest value allowed sample value. - - * since the DAC is limited to 12 bit, the absolute max is 0xfff = 4095U; - * lower values adjust the peak-voltage aka volume down. - * adjusting this value has only an effect on a sample-buffer whose values are - * are NOT pregenerated - see square-wave - */ -#ifndef AUDIO_DAC_SAMPLE_MAX -# define AUDIO_DAC_SAMPLE_MAX 4095U -#endif - -#if !defined(AUDIO_DAC_SAMPLE_RATE) && !defined(AUDIO_MAX_SIMULTANEOUS_TONES) && !defined(AUDIO_DAC_QUALITY_VERY_LOW) && !defined(AUDIO_DAC_QUALITY_LOW) && !defined(AUDIO_DAC_QUALITY_HIGH) && !defined(AUDIO_DAC_QUALITY_VERY_HIGH) -# define AUDIO_DAC_QUALITY_SANE_MINIMUM -#endif - -/** - * These presets allow you to quickly switch between quality settings for - * the DAC. The sample rate and maximum number of simultaneous tones roughly - * has an inverse relationship - slightly higher sample rates may be possible. - * - * NOTE: a high sample-rate results in a higher cpu-load, which might lead to - * (audible) discontinuities and/or starve other processes of cpu-time - * (like RGB-led back-lighting, ...) - */ -#ifdef AUDIO_DAC_QUALITY_VERY_LOW -# define AUDIO_DAC_SAMPLE_RATE 11025U -# define AUDIO_MAX_SIMULTANEOUS_TONES 8 -#endif - -#ifdef AUDIO_DAC_QUALITY_LOW -# define AUDIO_DAC_SAMPLE_RATE 22050U -# define AUDIO_MAX_SIMULTANEOUS_TONES 4 -#endif - -#ifdef AUDIO_DAC_QUALITY_HIGH -# define AUDIO_DAC_SAMPLE_RATE 44100U -# define AUDIO_MAX_SIMULTANEOUS_TONES 2 -#endif - -#ifdef AUDIO_DAC_QUALITY_VERY_HIGH -# define AUDIO_DAC_SAMPLE_RATE 88200U -# define AUDIO_MAX_SIMULTANEOUS_TONES 1 -#endif - -#ifdef AUDIO_DAC_QUALITY_SANE_MINIMUM -/* a sane-minimum config: with a trade-off between cpu-load and tone-range - * - * the (currently) highest defined note is NOTE_B8 with 7902Hz; if we now - * aim for an even even multiple of the buffer-size, we end up with: - * ( roundUptoPow2(highest note / AUDIO_DAC_BUFFER_SIZE) * nyquist-rate * AUDIO_DAC_BUFFER_SIZE) - * 7902/256 = 30.867 * 2 * 256 ~= 16384 - * which works out (but the 'scope shows some sampling artifacts with lower harmonics :-P) - */ -# define AUDIO_DAC_SAMPLE_RATE 16384U -# define AUDIO_MAX_SIMULTANEOUS_TONES 8 -#endif - -/** - * Effective bit-rate of the DAC. 44.1khz is the standard for most audio - any - * lower will sacrifice perceptible audio quality. Any higher will limit the - * number of simultaneous tones. In most situations, a tenth (1/10) of the - * sample rate is where notes become unbearable. - */ -#ifndef AUDIO_DAC_SAMPLE_RATE -# define AUDIO_DAC_SAMPLE_RATE 44100U -#endif - -/** - * The number of tones that can be played simultaneously. If too high a value - * is used here, the keyboard will freeze and glitch-out when that many tones - * are being played. - */ -#ifndef AUDIO_MAX_SIMULTANEOUS_TONES -# define AUDIO_MAX_SIMULTANEOUS_TONES 2 -#endif - -/** - * The default value of the DAC when not playing anything. Certain hardware - * setups may require a high (AUDIO_DAC_SAMPLE_MAX) or low (0) value here. - * Since multiple added sine waves tend to oscillate around the midpoint, - * and possibly never/rarely reach either 0 of MAX, 1/2 MAX can be a - * reasonable default value. - */ -#ifndef AUDIO_DAC_OFF_VALUE -# define AUDIO_DAC_OFF_VALUE AUDIO_DAC_SAMPLE_MAX / 2 -#endif - -#if AUDIO_DAC_OFF_VALUE > AUDIO_DAC_SAMPLE_MAX -# error "AUDIO_DAC: OFF_VALUE may not be larger than SAMPLE_MAX" -#endif - -/** - *user overridable sample generation/processing - */ -uint16_t dac_value_generate(void); |