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m68_VCO_Q.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/>.
// --------------------------------------------------------------------------
// standard VCO with 2 modulation and 3 waveform (rectangle / double saw / sin) and PWM
// Pot 1 : FQ
// Pot 2 : Mod Fq (or fine if nothing is connected on the modulation)
// Pot 3 : MOD Fq
// Pot 4 : MOD Fq
// Pot 5 : PWM
// Pot 6 : Mod PWM
// CV 1 : Mod Fq (1V/Oct a full)
// CV 2 : Mod Fq (1V/Oct a full)
// CV 3 : Mod Fp (1V/Oct a full)
// CV 4 : Mod PWM
// IN 1 : GAIN (Exp)
// IN 2 : Pan
// Selecteur3 : Wave Form : Square / Double Saw / sin
// OUT 1 : OUT L
// OUT 2 : OUT R
//uint32_t VCO1_PWM_save, freq_save, pwm_save;
int32_t pitch_quantized, trigger;
inline void VCO_Q_init_() {
VCO1_phase = 0;
init_chaos();
}
inline void VCO_Q_loop_() {
int32_t CV2_value, CV3_value, CV4_value;
int32_t tmpS, pot5_tmp;
//int32_t new_trig;
filter16_nozori_68
test_connect_loop_68();
chaos(15); // for default mod values
toggle_global = get_toggle();
if (CV2_connect < 60) CV2_value = CV_filter16_out[index_filter_cv2] - CV2_0V; else CV2_value = chaos_dx>>17;
if (CV3_connect < 60) CV3_value = CV_filter16_out[index_filter_cv3] - CV3_0V; else CV3_value = ((chaos_dy*5)>>16);
if (CV4_connect < 60) CV4_value = CV_filter16_out[index_filter_cv4] - CV4_0V; else CV4_value = chaos_dz>>16;
CV2_value = min(0x7FFF,max(-0x7FFF,CV2_value));
CV3_value = min(0x7FFF,max(-0x7FFF,CV3_value));
CV4_value = min(0x7FFF,max(-0x7FFF,CV4_value));
led2((CV2_value+0x7FFF)>>7);
led4((CV3_value+0x7FFF)>>7);
if (IN2_connect < 60) { // syncro sur le CV
if ( (trigger == 0 ) && (audio_inR > 0xB0000000) ) {
trigger = 1;
if (CV1_connect < 60) {
tmpS = CV_filter16_out[index_filter_cv1];
tmpS -= CV1_0V;
tmpS *= CV1_1V;
tmpS &= 0xFFF00000; // quantisation
pitch_quantized = tmpS;
} else { // pas de CV mais un trigger qd meme : generation de notes aleatoires
tmpS = random32();
tmpS %= 12; // limitation sur une octave
tmpS <<= 20; // 20 bit d'interpolation entre les notes
pitch_quantized = tmpS;
}
}
if ( (trigger == 1 ) && (audio_inR < 0xA0000000) ) {
trigger = 0;
}
} else { // pas de syncro sur le CV
if (CV1_connect < 60) {
tmpS = CV_filter16_out[index_filter_cv1];
tmpS -= CV1_0V;
tmpS *= CV1_1V;
tmpS &= 0xFFF00000; // quantisation
pitch_quantized = tmpS;
} else {
pitch_quantized = 0;
}
}
// frequency control
macro_fq_in
//macro_1VOct_CV1_Q
freq += pitch_quantized;
macro_FqMod_fine_simple(pot2)
macro_FqMod_value(pot3,CV2, CV2_value)
macro_FqMod_value(pot4,CV3, CV3_value)
macro_fq2increment
freq_save = increment1<<1;
//Waveform control
pot5_tmp = CV_filter16_out[index_filter_pot5];
tmpS = CV4_value;
tmpS *= CV_filter16_out[index_filter_pot6];
tmpS >>= 16;
pot5_tmp += tmpS;
pot5_tmp = min(0xFFFF, max(0,pot5_tmp));
pwm_save = pot5_tmp;
}
inline void VCO_Q_audio_() {
uint32_t tmp, tmp1, tmp2, tmp4;
int32_t tmpS, tmpS2;
uint32_t VCO1_WS, VCO1_PWM, VCO1_offset, VCO1_gain, VCO1_BLsize, PWM_tmp;
int32_t pot5_tmp, pot3_tmp;
uint32_t out, out2;
uint32_t increment1;
uint32_t phase_local;
increment1 = freq_save; // from the data loop
pot5_tmp = min(pwm_save, 0xFFFF-(min(0xFFFF,increment1>>10))); // limit du PWM en fct de la frequence pour ne pas avoir d'impulsion trop petite
pot5_tmp = filter(pot5_tmp<<8, VCO1_PWM_save, 6);
VCO1_PWM_save = pot5_tmp;
PWM_tmp = pot5_tmp<<8;
VCO1_PWM = (0xFFFF00-(pot5_tmp))<<7;
VCO1_phase += increment1<<3;
phase_local = VCO1_phase;
// compute output
switch(toggle_global) {
case 0 : // rectangle
//VCO1_PWM = max(VCO1_PWM, 0x04000000);
VCO1_BLsize = (0xFFFFFFFF / increment1)<<4;
tmpS = sawBL(VCO1_phase, VCO1_BLsize) ^ 0x80000000;
tmpS2 = sawBL(VCO1_phase + VCO1_PWM, VCO1_BLsize) ^ 0x80000000;
tmpS -= tmpS2;
tmpS += 3*(PWM_tmp>>3);
out = tmpS^0x80000000;
VCO1_BLsize >>= 1;
tmpS = sawBL(VCO1_phase<<1, VCO1_BLsize) ^ 0x80000000;
tmpS2 = sawBL((VCO1_phase<<1) + VCO1_PWM, VCO1_BLsize) ^ 0x80000000;
tmpS -= tmpS2;
tmpS += 3*(PWM_tmp>>3);
out2 = tmpS^0x80000000;
break;
case 1 : // double saw
uint32_t phase2_local, pot5_local;
phase2_local = phase_local<<1;
pot5_local = (pot5_tmp<<7);
VCO1_BLsize = (0xFFFFFFFF / increment1)<<4;
tmpS = ((sawBL(phase_local, VCO1_BLsize)>>1) + (sawBL(phase_local + pot5_local, VCO1_BLsize)>>1));
tmpS ^= 0x80000000;
tmpS = m_s32xs32_s32H(tmpS, (pot5_tmp<<6) + (1<<30));
//tmpS = (tmpS>>16) * (((pot5_tmp<<6) + (1<<30))>>16);
tmpS <<= 2;
out = tmpS^0x80000000;
VCO1_BLsize >>= 1;
tmpS = ((sawBL(phase2_local, VCO1_BLsize)>>1) + (sawBL((phase2_local) + pot5_local, VCO1_BLsize)>>1));
tmpS ^= 0x80000000;
tmpS = m_s32xs32_s32H(tmpS, (pot5_tmp<<6) + (1<<30));
//tmpS = (tmpS>>16) * (((pot5_tmp<<6) + (1<<30))>>16);
tmpS <<= 2;
out2 = tmpS^0x80000000;
break;
case 2 : // sin
tmp1 = VCO1_phase;
tmp2 = fast_sin(0xC0000000 + (tmp1>>1));
tmpS = tmp2-tmp1;
tmpS = (PWM_tmp>>16) * (tmpS >> 16);
tmpS = tmp1 - tmpS;
tmp1 = tmpS;
tmp2 = fast_sin(0xC0000000 + (tmp1>>1));
tmpS = tmp2-tmp1;
tmpS = (PWM_tmp>>16) * (tmpS >> 16);
tmpS = tmp1 - tmpS;
tmp1 = tmpS;
tmp2 = fast_sin(0xC0000000 + (tmp1>>1));
tmpS = tmp2-tmp1;
tmpS = (PWM_tmp>>16) * (tmpS >> 16);
tmpS = tmp1 - tmpS;
tmp1 = tmpS;
out = fast_sin(0x40000000 + tmp1);
out -= out>>2;
out += 0x1FFFFFFF;
tmp1 = VCO1_phase<<1;
tmp2 = fast_sin(0xC0000000 + (tmp1>>1));
tmpS = tmp2-tmp1;
tmpS = (PWM_tmp>>16) * (tmpS >> 16);
tmpS = tmp1 - tmpS;
tmp1 = tmpS;
tmp2 = fast_sin(0xC0000000 + (tmp1>>1));
tmpS = tmp2-tmp1;
tmpS = (PWM_tmp>>16) * (tmpS >> 16);
tmpS = tmp1 - tmpS;
tmp1 = tmpS;
tmp2 = fast_sin(0xC0000000 + (tmp1>>1));
tmpS = tmp2-tmp1;
tmpS = (PWM_tmp>>16) * (tmpS >> 16);
tmpS = tmp1 - tmpS;
tmp1 = tmpS;
out2 = fast_sin(0x40000000 + tmp1);
out2 -= out2>>2;
out2 += 0x1FFFFFFF;
break;
}
macro_out_gainL_stereo
}