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- // Copyright 2015 Olivier Gillet.
- //
- // Author: Olivier Gillet (ol.gillet@gmail.com)
- //
- // Permission is hereby granted, free of charge, to any person obtaining a copy
- // of this software and associated documentation files (the "Software"), to deal
- // in the Software without restriction, including without limitation the rights
- // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- // copies of the Software, and to permit persons to whom the Software is
- // furnished to do so, subject to the following conditions:
- //
- // The above copyright notice and this permission notice shall be included in
- // all copies or substantial portions of the Software.
- //
- // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- // THE SOFTWARE.
- //
- // See http://creativecommons.org/licenses/MIT/ for more information.
- //
- // -----------------------------------------------------------------------------
- //
- // CV reader.
-
- #include "marbles/cv_reader.h"
-
- #include <algorithm>
-
- #include "stmlib/dsp/dsp.h"
-
- namespace marbles {
-
- using namespace std;
- using namespace stmlib;
-
- /* static */
- const CvReaderChannel::Settings CvReader::channel_settings_[] = {
- // cv_lp | pot_scale | pot_offset | pot_lp | min | max | hysteresis
- // ADC_CHANNEL_DEJA_VU_AMOUNT,
- { 0.05f, 1.0f, 0.0f, 0.01f, 0.0f, 1.0f, 0.00f },
- // ADC_CHANNEL_X_SPREAD_2 / ADC_CHANNEL_DEJA_VU_LENGTH,
- { 0.05f, 1.0f, 0.0f, 0.01f, 0.0f, 1.0f, 0.00f },
- // ADC_CHANNEL_T_RATE,
- { 0.2f, 120.0f, -60.0f, 0.01f, -120.0f, 120.0f, 0.001f },
- // ADC_CHANNEL_T_BIAS,
- { 0.05f, 1.05f, -0.025f, 0.01f, 0.0f, 1.0f, 0.00f },
- // ADC_CHANNEL_T_JITTER,
- { 0.05f, 1.0f, 0.0f, 0.01f, 0.0f, 1.0f, 0.00f },
- // ADC_CHANNEL_X_SPREAD,
- { 0.1f, 1.0f, 0.0f, 0.01f, 0.0f, 1.0f, 0.01f },
- // ADC_CHANNEL_X_BIAS,
- { 0.1f, 1.0f, 0.0f, 0.01f, 0.0f, 1.0f, 0.02f },
- // ADC_CHANNEL_X_STEPS,
- { 0.05f, 1.0f, 0.0f, 0.01f, 0.0f, 1.0f, 0.02f },
- };
-
- void CvReader::Init(CalibrationData* calibration_data) {
- calibration_data_ = calibration_data;
- adc_.Init(false);
- for (int i = 0; i < ADC_CHANNEL_LAST; ++i) {
- channel_[i].Init(
- &calibration_data_->adc_scale[i],
- &calibration_data_->adc_offset[i],
- channel_settings_[i]);
- }
-
- fill(&attenuverter_[0], &attenuverter_[ADC_CHANNEL_LAST], 1.0f);
-
- // Set virtual attenuverter to 12 o'clock to ignore the non-existing
- // CV input for DEJA VU length.
- attenuverter_[ADC_CHANNEL_DEJA_VU_LENGTH] = 0.5f;
-
- // Set virtual attenuverter to a little more than 100% to
- // compensate for op-amp clipping and get full parameter swing.
- attenuverter_[ADC_CHANNEL_DEJA_VU_AMOUNT] = 1.01f;
- attenuverter_[ADC_CHANNEL_T_BIAS] = 1.01f;
- attenuverter_[ADC_CHANNEL_T_JITTER] = 1.01f;
- attenuverter_[ADC_CHANNEL_X_SPREAD] = 1.01f;
- attenuverter_[ADC_CHANNEL_X_BIAS] = 1.01f;
- attenuverter_[ADC_CHANNEL_X_STEPS] = 1.01f;
- }
-
- void CvReader::Copy(uint16_t* output) {
- const uint16_t* adc_values = adc_.values();
- copy(&adc_values[0], &adc_values[ADC_CHANNEL_LAST * 2], output);
- adc_.Convert();
- }
-
- void CvReader::Process(const uint16_t* raw_values, float* output) {
- for (int i = 0; i < ADC_CHANNEL_LAST; ++i) {
- output[i] = channel_[i].Process(
- static_cast<float>(raw_values[ADC_GROUP_POT + i]) / 65536.0f,
- static_cast<float>(raw_values[ADC_GROUP_CV + i]) / 65536.0f,
- attenuverter_[i]);
- }
- }
-
- } // namespace marbles
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