Hello! 
I am currently working on a project where I want to use Audio Shield's synthesizer capabilities to generate custom waves. For the waves I already bought a Touch Screen Display (2.8 Inch ILI9341 240x320 SPI TFT LCD Display Touch Panel SPI Serial Port Module v1.2). I have no problems understanding how the Audio Shield works but I cant seem to work out how to use the Display with my Teensy 4.0. I tried every kind of examples but almost none of them works. An error I often get is: Error compiling for board Teensy 4.0. I would really appreciate any kind of help! I want the values of the drawn wave in an array, so that I can use my Audio Shield to interpret it as a sound wave.
It's a code I can run on Teensy and I can actually see the color-rectangles. No touch-draw function though..
My step sequencer code:
I am currently working on a project where I want to use Audio Shield's synthesizer capabilities to generate custom waves. For the waves I already bought a Touch Screen Display (2.8 Inch ILI9341 240x320 SPI TFT LCD Display Touch Panel SPI Serial Port Module v1.2). I have no problems understanding how the Audio Shield works but I cant seem to work out how to use the Display with my Teensy 4.0. I tried every kind of examples but almost none of them works. An error I often get is: Error compiling for board Teensy 4.0. I would really appreciate any kind of help! I want the values of the drawn wave in an array, so that I can use my Audio Shield to interpret it as a sound wave.
It's a code I can run on Teensy and I can actually see the color-rectangles. No touch-draw function though..
Code:
/***************************************************
This is our GFX example for the Adafruit ILI9341 Breakout and Shield
----> [url]http://www.adafruit.com/products/1651[/url]
Check out the links above for our tutorials and wiring diagrams
These displays use SPI to communicate, 4 or 5 pins are required to
interface (RST is optional)
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************
This is a free software with NO WARRANTY.
[url]https://simple-circuit.com/[/url]
****************************************************/
#include <Adafruit_GFX.h> // include Adafruit graphics library
#include <Adafruit_ILI9341.h> // include Adafruit ILI9341 TFT library
#include <SPI.h>
#include <Wire.h> // this is needed even tho we aren't using it
#define TS_MINX 150
#define TS_MINY 130
#define TS_MAXX 3800
#define TS_MAXY 4000
#define TFT_CS 8 // TFT CS pin is connected to arduino pin 8
#define TFT_RST 9 // TFT RST pin is connected to arduino pin 9
#define TFT_DC 10 // TFT DC pin is connected to arduino pin 10
#define TIRQ_PIN 2
// initialize ILI9341 TFT library
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);
#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;
void setup() {
Serial.begin(38400);
Serial.println("ILI9341 Test!");
tft.begin();
// read diagnostics (optional but can help debug problems)
uint8_t x = tft.readcommand8(ILI9341_RDMODE);
Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);
x = tft.readcommand8(ILI9341_RDMADCTL);
Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);
x = tft.readcommand8(ILI9341_RDPIXFMT);
Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);
x = tft.readcommand8(ILI9341_RDIMGFMT);
Serial.print("Image Format: 0x"); Serial.println(x, HEX);
x = tft.readcommand8(ILI9341_RDSELFDIAG);
Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX);
tft.fillScreen(ILI9341_BLACK);
tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
currentcolor = ILI9341_RED;
}
void loop(void) {
}My step sequencer code:
Code:
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
// GUItool: begin automatically generated code
AudioSynthWaveform waveform2; //xy=161,336
AudioSynthWaveform waveform3; //xy=161,367
AudioSynthWaveform waveform4; //xy=161,398
AudioSynthWaveform waveform1; //xy=162,304
AudioEffectEnvelope envelope4; //xy=297,396
AudioEffectEnvelope envelope3; //xy=299,366
AudioEffectEnvelope envelope1; //xy=301,303
AudioEffectEnvelope envelope2; //xy=301,334
AudioMixer4 mixer1; //xy=439,347
AudioOutputI2S i2s1; //xy=633,351
AudioConnection patchCord1(waveform2, envelope2);
AudioConnection patchCord2(waveform3, envelope3);
AudioConnection patchCord3(waveform4, envelope4);
AudioConnection patchCord4(waveform1, envelope1);
AudioConnection patchCord5(envelope4, 0, mixer1, 3);
AudioConnection patchCord6(envelope3, 0, mixer1, 2);
AudioConnection patchCord7(envelope1, 0, mixer1, 0);
AudioConnection patchCord8(envelope2, 0, mixer1, 1);
AudioConnection patchCord9(mixer1, 0, i2s1, 0);
AudioConnection patchCord10(mixer1, 0, i2s1, 1);
AudioControlSGTL5000 sgtl5000_1; //xy=289,51
// GUItool: end automatically generated code
int b1 = 0;
int b2 = 0;
int b3 = 0;
int b4 = 0;
float att1 = 200;
float dec1 = 200;
float sus1 = 200;
float rel1 = 200;
float att2 = 200;
float dec2 = 200;
float sus2 = 200;
float rel2 = 200;
float att3 = 200;
float dec3 = 200;
float sus3 = 200;
float rel3 = 200;
float att4 = 200;
float dec4 = 200;
float sus4 = 200;
float rel4 = 200;
float att = 200;
float dec = 200;
float sus = 200;
float rel = 200;
int led12 = 12;
int led11 = 11;
int led10 = 10;
int led8 = 8;
int amp1 = 1;
int amp2 = 1;
int amp3 = 1;
int amp4 = 1;
int freq1 = 500;
int freq2 = 700;
int freq3 = 900;
int freq4 = 1100;
float fourth = 1.0 / 4.0;
float one_sixth = 1.0 / 6.0;
int bpm = 120;
int modulo = 1000 * (60.0 / bpm); // in milli
// int fourth_modulo = fourth * modulo;
int previousA2 = 0; // previously sent poti values, to detect changes
int minBPM = 30;
int maxBPM = 220;
const int numReadings = 5; // Anzahl der Readings
int readings[numReadings]; // the readings from the analog input
int readIndex = 0; // the index of the current reading
int total = 0; // the running total
int average = 0; // the average
int inputPin = A1; // Analog input
int average_bpm = 0;
int average_bpm_alt = 0;
void setup() {
Serial.begin(38600); // 38600 symbols per second
pinMode(led12, OUTPUT);
pinMode(led11, OUTPUT);
pinMode(led10, OUTPUT);
pinMode(led8, OUTPUT);
pinMode(1, INPUT_PULLUP); // b1
pinMode(2, INPUT_PULLUP); // b2
pinMode(3, INPUT_PULLUP); // b3
pinMode(4, INPUT_PULLUP); // b4
AudioMemory(20);
sgtl5000_1.enable();
sgtl5000_1.volume(0.4);
mixer1.gain(0, 0.03);
mixer1.gain(1, 0.03);
mixer1.gain(2, 0.03);
mixer1.gain(3, 0.03);
waveform1.begin(WAVEFORM_SINE); // WAVE 1
waveform1.amplitude(amp1);
waveform1.frequency(freq1);
waveform2.begin(WAVEFORM_SINE); // WAVE 2
waveform2.amplitude(amp2);
waveform2.frequency(freq2);
waveform3.begin(WAVEFORM_SINE); // WAVE 3
waveform3.amplitude(amp3);
waveform3.frequency(freq3);
waveform4.begin(WAVEFORM_SINE); // WAVE 4
waveform4.amplitude(amp4);
waveform4.frequency(freq4);
}
void loop() {
int att = analogRead(A2);
int dec = analogRead(A0);
int rel = analogRead(A4);
int sus = analogRead(A3);
ADSR(att, dec, rel, sus);
// ----------------- SMOOTHING TEMPLATE -----------------
static float bpm = {120}; // wird wegen static nur einmal initialisiert
int modulo = 1000 * (60.0 / average_bpm); // in milli
int fourth_modulo = fourth * modulo;
int n1 = analogRead(A1);
int current_time = millis();
int modulo_time = current_time % modulo;
// subtract the last reading:
total = total - readings[readIndex] ; // Alle Analoge inputwerte zusammenaddiert, wobei der Wert der neuen Loop abgezogen wird (zieht den nullten Wert ab)
// read from the sensor:
readings[readIndex] = analogRead(inputPin);
// add the reading to the total:
total = total + readings[readIndex];
// advance to the next position in the array:
readIndex = readIndex + 1;
if (readIndex >= numReadings) {
// ...wrap around to the beginning:
readIndex = 0;
// calculate the average:
average = total / numReadings;
average_bpm = map(average, 0, 1023, 50, 280);
if (average_bpm != average_bpm_alt) {
// Serial.println(average_bpm);
}
average_bpm_alt = average_bpm;
Serial.println(average_bpm);
// ----------------- MODULO BASED SEQUENCER -----------------
if (modulo_time == 0) {
digitalWrite(led12, HIGH);
digitalWrite(led8, LOW);
envelope4.noteOff();
envelope1.noteOn();
waveform1.amplitude(amp1);
waveform1.frequency(freq1);
}
else if (modulo_time == fourth_modulo) {
digitalWrite(led12, LOW);
digitalWrite(led11, HIGH);
envelope1.noteOff();
envelope2.noteOn();
waveform2.amplitude(amp2);
waveform2.frequency(freq2);
}
else if (modulo_time == 2 * fourth_modulo) {
digitalWrite(led11, LOW);
digitalWrite(led10, HIGH);
envelope2.noteOff();
envelope3.noteOn();
waveform3.amplitude(amp3);
waveform3.frequency(freq3);
}
else if (modulo_time == 3 * fourth_modulo) {
digitalWrite(led10, LOW);
digitalWrite(led8, HIGH);
envelope3.noteOff();
envelope4.noteOn();
waveform4.amplitude(amp4);
waveform4.frequency(freq4);
}
}
}