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m84_FM.ino
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m84_FM.ino
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// --------------------------------------------------------------------------
// This file is part of the NOZORI firmware.
//
// NOZORI firmware 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 3 of the License, or
// (at your option) any later version.
//
// NOZORI firmware 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 NOZORI firmware. If not, see <http://www.gnu.org/licenses/>.
// --------------------------------------------------------------------------
// quad VCO oscillator with exponential frequency modulation
// Pot 1 : FQ1
// Pot 2 : Mod1 (or fine tune if nothing is connected on the modulation)
// Pot 3 : FQ2
// Pot 4 : MOD2
// Pot 5 : FQ3
// Pot 6 : MOD3
// Pot 7 : FQ4
// Pot 8 : MOD4
// IN 1 : 1V/Oct
// IN 2 : FQ
// Selecteur3 : VCO WS : rising saw, falling saw, square
// OUT 1 : OUTL
// OUT 2 : OUTR
inline void FM_init_() {
sin1_phase = 0;
sin2_phase = 0;
sin3_phase = 0;
sin4_phase = 0;
}
inline void FM_loop_() {
filter16_nozori_84
test_connect_loop_84();
int32_t freq;
// Oscillateur 4
freq = (CV_filter16_out[index_filter_pot7])*2800;
freq += 0x04000000;
macro_fq2increment
increment_4 = increment1; //save
// Oscillateur 3
freq = (CV_filter16_out[index_filter_pot5])*2800;
freq += 0x04000000;
macro_fq2increment_novar
increment_3 = increment1; //save
// Oscillateur 2
freq = (CV_filter16_out[index_filter_pot3])*2800;
freq += 0x04000000;
macro_fq2increment_novar
increment_2 = increment1; //save
if (IN1_connect < 60) led2(audio_inL >> 23); else set_led2(0);
if (IN2_connect < 60) led4(audio_inR >> 23); else set_led4(0);
}
inline void FM_audio_() {
int32_t outS, tmpS, modulation1, modulation2, freq;
uint32_t out, out2;
uint32_t freq_MSB, freq_LSB;
uint32_t increment1, increment2;
switch (get_toggle()) {
case 0 :
// Oscillateur 4
//freq = (CV_filter16_out[index_filter_pot7])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_4;
sin4_phase += increment1<<3;
tmpS = sin4_phase^0x80000000;
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot8]);
modulation1 = tmpS >> 6;
// Oscillateur 3
//freq = (CV_filter16_out[index_filter_pot5])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_3;
sin3_phase += increment1<<3;
tmpS = sin3_phase^0x80000000;
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot6]);
modulation1 += tmpS >> 6;
// Oscillateur 2
//freq = (CV_filter16_out[index_filter_pot3])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_2;
sin2_phase += increment1<<3;
tmpS = sin2_phase^0x80000000;
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot4]);
modulation1 += tmpS >> 6;
// Oscillateur 1
freq = (CV_filter16_out[index_filter_pot1])<<11;
freq += 0x07000000;
macro_1VOct_IN1
macro_FqMod_fine_IN2(pot2)
freq += modulation1;
macro_fq2increment_novar
sin1_phase += increment1<<3;
out = fast_sin(sin1_phase);
out2 = fast_sin(sin1_phase<<1);
break;
case 1 :
// Oscillateur 4
//freq = (CV_filter16_out[index_filter_pot7])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_4;
sin4_phase += increment1<<3;
tmpS = -(sin4_phase^0x80000000);
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot8]);
modulation1 = tmpS >> 6;
// Oscillateur 3
//freq = (CV_filter16_out[index_filter_pot5])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_3;
sin3_phase += increment1<<3;
tmpS = -(sin3_phase^0x80000000);
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot6]);
modulation1 += tmpS >> 6;
// Oscillateur 2
//freq = (CV_filter16_out[index_filter_pot3])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_2;
sin2_phase += increment1<<3;
tmpS = -(sin2_phase^0x80000000);
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot4]);
modulation1 += tmpS >> 6;
// Oscillateur 1
freq = (CV_filter16_out[index_filter_pot1])<<11;
freq += 0x07000000;
macro_1VOct_IN1
macro_FqMod_fine_IN2(pot2)
freq += modulation1;
macro_fq2increment_novar
sin1_phase += increment1<<3;
out = fast_sin(sin1_phase);
out2 = fast_sin(sin1_phase<<1);
break;
case 2 :
// Oscillateur 4
//freq = (CV_filter16_out[index_filter_pot7])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_4;
sin4_phase += increment1<<3;
tmpS = (sin4_phase & 0x80000000)? 0x7FFFFFFF:0x80000000;
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot8]);
modulation1 = tmpS >> 6;
// Oscillateur 3
//freq = (CV_filter16_out[index_filter_pot5])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_3;
sin3_phase += increment1<<3;
tmpS = (sin3_phase & 0x80000000)? 0x7FFFFFFF:0x80000000;
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot6]);
modulation1 += tmpS >> 6;
// Oscillateur 2
//freq = (CV_filter16_out[index_filter_pot3])<<11;
//freq += 0x04000000;
//macro_fq2increment_novar
increment1 = increment_2;
sin2_phase += increment1<<3;
tmpS = (sin2_phase & 0x80000000)? 0x7FFFFFFF:0x80000000;
tmpS = ((tmpS>>16) * CV_filter16_out[index_filter_pot4]);
modulation1 += tmpS >> 6;
// Oscillateur 1
freq = (CV_filter16_out[index_filter_pot1])<<11;
freq += 0x07000000;
macro_1VOct_IN1
macro_FqMod_fine_IN2(pot2)
freq += modulation1;
macro_fq2increment_novar
sin1_phase += increment1<<3;
out = fast_sin(sin1_phase);
out2 = fast_sin(sin1_phase<<1);
break;
}
out -= out >> 2; // reduire un peu le gain pour rester ds -5/+5V
out += 0x80000000 >> 2; // pour symetriser
out2 -= out2 >> 2; // reduire un peu le gain pour rester ds -5/+5V
out2 += 0x80000000 >> 2; // pour symetriser
macro_out_stereo
}