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‎extras/functions_generator_firmware/SKr3_waves/README.md‎

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# Firmware for functions generator
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You need `Arduino Renesas Core`.
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Select `Science Kit R3 Audio Module`.
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Use USB-C to upload

‎extras/functions_generator_firmware/SKr3_waves/SKr3_waves.ino‎

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/*
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This file is part of the Arduino_GroveI2C_Ultrasonic library.
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Copyright (c) 2023 Arduino SA. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "Wire.h"
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#include "pin_def.h"
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#include "led_gauge.h"
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#include "led_range.h"
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#include "analogWave.h"
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#define RES 100
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// Firmware version
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uint8_t version[2]={0,6};
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char command=0;
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byte data[6];
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uint16_t wave[RES];
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LedGauge frequency_1(FQ_1, 10, 10, ROW_A_1, ROW_A_2, ROW_A_3, COL_A_1, COL_A_2, COL_A_3);
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LedGauge frequency_2(FQ_2, 10, 10, ROW_B_1, ROW_B_2, ROW_B_3, COL_B_1, COL_B_2, COL_B_3, true);
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LedRange range(FQ_R, ROW_C_1, ROW_C_2, ROW_C_3, COL_C_1, COL_C_2);
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analogWave wave1(DAC,wave,RES,0);
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analogWave wave2(DAC2,wave,RES,0);
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int previous_frequency_1 = 10;
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int previous_frequency_2 = 10;
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int freq1 = 10;
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int freq2 = 10;
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int previous_phase_1 = 0;
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int previous_phase_2 = 0;
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int phase1 = 0;
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int phase2 = 0;
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const float step = ADC_RES/float(RES);
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const float phase_to_deg = 180/float(RES);
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bool test_flag = false;
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unsigned long time_rephase;
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int rephase;
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// This function loads an wave array with a sinewave using RES samples.
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void generate_wave(){
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float s = (2 * 3.1415) / RES;
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for (auto i = 0; i < RES; ++i) {
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float sample = (1 + sin((float)i * s)) * (float)65535 / 2.0;
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wave[i] = (uint16_t)sample;
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}
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}
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void comm_event(int event){
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command=Wire.read();
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}
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void comm_request(){
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switch(command){
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case 'V': // version, high rev, low rev
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Wire.write(version,2);
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break;
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case 'D':
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data[0]=frequency_1.getGaugeValue();
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data[1]=range.getRange1();
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data[2]=phase1*phase_to_deg;
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data[3]=frequency_2.getGaugeValue();
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data[4]=range.getRange2();
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data[5]=phase2*phase_to_deg;
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Wire.write(data,6);
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break;
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/*
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case 'T':
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test_flag=true;
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break;
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case 'N':
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test_flag=false;
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break;
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*/
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}
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}
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void setup() {
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Serial.begin(115200);
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generate_wave();
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pinMode(PH_1,INPUT);
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pinMode(PH_2,INPUT);
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frequency_1.refresh();
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frequency_2.refresh();
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range.update();
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Wire.begin(0x2F);
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Wire.onReceive(comm_event);
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Wire.onRequest(comm_request);
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//wave1.sine(freq1); //these use default sampling (24)
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//wave2.sine(freq1);
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wave1.begin(freq1);
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wave2.begin(freq2);
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wave1.sync(wave2);
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rephase=0;
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time_rephase=millis();
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}
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void loop() {
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frequency_1.refresh();
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frequency_2.refresh();
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range.update();
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freq1=frequency_1.getGaugeValue()*range.getRange1();
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freq2=frequency_2.getGaugeValue()*range.getRange2();
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phase1=analogRead(PH_1)/step;
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if (phase1>(RES+10)){
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phase1=0;
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}
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phase2=analogRead(PH_2)/step;
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if (phase2>RES){
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phase2=0;
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}
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if (freq1!=previous_frequency_1){
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wave1.freq(freq1);
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previous_frequency_1=freq1;
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wave1.sync(wave2);
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}
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if (freq2!=previous_frequency_2){
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wave2.freq(freq2);
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previous_frequency_2=freq2;
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wave2.sync(wave1);
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}
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if (millis()-time_rephase>500){
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if (phase1!=previous_phase_1){
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wave1.offset(phase1/2);
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previous_phase_1=phase1;
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if (phase2==0){
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wave1.sync(wave2);
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}
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}
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if (phase2!=previous_phase_2){
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wave2.offset(phase2/2);
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previous_phase_2=phase2;
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if (phase1==0){
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wave2.sync(wave1);
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}
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}
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time_rephase=millis();
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}
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delay(1);
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}

‎extras/functions_generator_firmware/SKr3_waves/led_array.cpp‎

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/*
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This file is part of the Arduino_GroveI2C_Ultrasonic library.
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Copyright (c) 2023 Arduino SA. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "Arduino.h"
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#include "led_array.h"
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LedArray::LedArray(const uint8_t _r1, const uint8_t _r2, const uint8_t _r3, const uint8_t _c1, const uint8_t _c2, const uint8_t _c3){
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r1=_r1;
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r2=_r2;
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r3=_r3;
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c1=_c1;
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c2=_c2;
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c3=_c3;
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pinMode(r1,OUTPUT);
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pinMode(r2,OUTPUT);
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pinMode(r3,OUTPUT);
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pinMode(c1,OUTPUT);
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pinMode(c2,OUTPUT);
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pinMode(c3,OUTPUT);
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set(0,0,0,0,0,0);
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}
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/* frequency selector
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+-----+-----+------+
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| ROW | COL | LED |
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+-----+-----+------+
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| A_1 | A_1 | 90 |
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| A_2 | A_1 | 70 |
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| A_3 | A_1 | 80 |
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| A_1 | A_2 | 60 |
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| A_2 | A_2 | 40 |
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| A_3 | A_2 | 50 |
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| A_1 | A_3 | 30 |
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| A_2 | A_3 | 10 |
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| A_3 | A_3 | 20 |
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+-----+-----+------+
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*/
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/* frequency selector 2 mid-march
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+-----+-----+------+
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| ROW | COL | LED |
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+-----+-----+------+
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| B_1 | B_1 | 90 |
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| B_2 | B_1 | 80 |
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| B_3 | B_1 | 70 |
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| B_1 | B_2 | 60 |
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| B_2 | B_2 | 50 |
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| B_3 | B_2 | 40 |
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| B_1 | B_3 | 30 |
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| B_2 | B_3 | 10 |
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| B_3 | B_3 | 20 |
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+-----+-----+------+
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*/
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void LedArray::set(const int x){
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switch(x){
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case 0:
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set(1,0,1,0,0,1);
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break;
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case 1:
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set(1,1,0,0,0,1);
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break;
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case 2:
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set(0,1,1,0,0,1);
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break;
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case 3:
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set(1,0,1,0,1,0);
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break;
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case 4:
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set(1,1,0,0,1,0);
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break;
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case 5:
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set(0,1,1,0,1,0);
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break;
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case 6:
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set(1,0,1,1,0,0);
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break;
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case 7:
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set(1,1,0,1,0,0);
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break;
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case 8:
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set(0,1,1,1,0,0);
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break;
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case 20:
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set(1,1,0,0,0,1);
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break;
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case 21:
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set(1,0,1,0,0,1);
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break;
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case 22:
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set(0,1,1,0,0,1);
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break;
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case 23:
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set(1,1,0,0,1,0);
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break;
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case 24:
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set(1,0,1,0,1,0);
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break;
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case 25:
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set(0,1,1,0,1,0);
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break;
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case 26:
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set(1,1,0,1,0,0);
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break;
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case 27:
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set(1,0,1,1,0,0);
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break;
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case 28:
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set(0,1,1,1,0,0);
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break;
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default:
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set(1,1,1,0,0,0);
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}
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}
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void LedArray::set(const bool _r1, const bool _r2, const bool _r3, const bool _c1, const bool _c2, const bool _c3){
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digitalWrite(r1,_r1);
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digitalWrite(r2,_r2);
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digitalWrite(r3,_r3);
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digitalWrite(c1,_c1);
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digitalWrite(c2,_c2);
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digitalWrite(c3,_c3);
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}

‎extras/functions_generator_firmware/SKr3_waves/led_array.h‎

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/*
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This file is part of the Arduino_GroveI2C_Ultrasonic library.
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Copyright (c) 2023 Arduino SA. All rights reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
7+
License as published by the Free Software Foundation; either
8+
version 2.1 of the License, or (at your option) any later version.
9+
10+
This library is distributed in the hope that it will be useful,
11+
but WITHOUT ANY WARRANTY; without even the implied warranty of
12+
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
16+
License along with this library; if not, write to the Free Software
17+
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __LED_ARRAY_H__
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#define __LED_ARRAY_H__
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#include "Arduino.h"
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class LedArray{
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private:
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uint8_t r1, r2, r3, c1, c2, c3;
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public:
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LedArray(const uint8_t _r1, const uint8_t _r2, const uint8_t _r3, const uint8_t _c1, const uint8_t _c2, const uint8_t _c3);
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void set(const int x);
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void set(const bool _r1, const bool _r2, const bool _r3, const bool _c1, const bool _c2, const bool _c3);
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};
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#endif

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