mirror of
https://github.com/jhbruhn/eurorack.git
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66 lines
2 KiB
C++
66 lines
2 KiB
C++
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#include <avr/pgmspace.h>
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#include <math.h>
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#include "avrlib/adc.h"
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#include "avrlib/avrlib.h"
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#include "avrlib/devices/mcp492x.h"
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#include "avrlib/gpio.h"
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#include "avrlib/spi.h"
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#include "avrlib/watchdog_timer.h"
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#include "stereo_mix/resources.h"
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#define degToRad(angleInDegrees) ((angleInDegrees)*M_PI / 180.0)
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using namespace avrlib;
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using namespace stereo_mix;
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typedef SpiMaster<NumberedGpio<0>, MSB_FIRST, 2> dac1Spi;
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typedef Dac<dac1Spi, BUFFERED_REFERENCE, 1> Dac1;
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typedef SpiMaster<NumberedGpio<1>, MSB_FIRST, 2> dac2Spi;
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typedef Dac<dac2Spi, BUFFERED_REFERENCE, 1> Dac2;
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typedef SpiMaster<NumberedGpio<2>, MSB_FIRST, 2> dac3Spi;
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typedef Dac<dac3Spi, BUFFERED_REFERENCE, 1> Dac3;
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typedef SpiMaster<NumberedGpio<3>, MSB_FIRST, 2> dac4Spi;
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typedef Dac<dac4Spi, BUFFERED_REFERENCE, 1> Dac4;
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typedef AdcInputScanner AnalogInputs;
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#define NUM_CHANNELS 4
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uint16_t volume[NUM_CHANNELS];
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float pan[NUM_CHANNELS];
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int main(void)
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{
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Dac1::Init();
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Dac2::Init();
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Dac3::Init();
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Dac4::Init();
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AnalogInputs::Init();
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AnalogInputs::set_num_inputs(8);
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while (true) {
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ResetWatchdog();
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AnalogInputs::Scan();
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for (int i = 0; i < NUM_CHANNELS; i++) {
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volume[i] = pgm_read_word_near(lut_res_linear_to_exp + AnalogInputs::Read(i));
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if(volume[i] < 7) // some ADSRs dont seem to close completely, lets gate very low voltages...
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volume[i] = 0;
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int16_t panRead = AnalogInputs::Read(i + NUM_CHANNELS);
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pan[i] = (panRead / 1024.0) * M_PI_2; // convert 0 to 90° to radians
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}
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Dac1::Write((uint16_t)((volume[0]) * sin(pan[0])) << 2, 0);
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Dac1::Write((uint16_t)((volume[0]) * cos(pan[0])) << 2, 1);
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Dac2::Write((uint16_t)((volume[1]) * sin(pan[1])) << 2, 0);
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Dac2::Write((uint16_t)((volume[1]) * cos(pan[1])) << 2, 1);
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Dac3::Write((uint16_t)((volume[2]) * sin(pan[2])) << 2, 0);
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Dac3::Write((uint16_t)((volume[2]) * cos(pan[2])) << 2, 1);
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Dac4::Write((uint16_t)((volume[3]) * sin(pan[3])) << 2, 0);
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Dac4::Write((uint16_t)((volume[3]) * cos(pan[3])) << 2, 1);
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}
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}
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