// Advanced Microcontroller-based Audio Workshop
//
// http://www.pjrc.com/store/audio_tutorial_kit.html
// https://hackaday.io/project/8292-microcontroller-audio-workshop-had-supercon-2015
//
// Part 3-3: Add a TFT Display
#include <ILI9341_t3.h>
#include <font_Arial.h> // from ILI9341_t3
///////////////////////////////////
// copy the Design Tool code here
///////////////////////////////////
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
// GUItool: begin automatically generated code
AudioPlaySdWav playSdWav1; //xy=83,216
AudioAnalyzePeak peak1; //xy=329,244
AudioAnalyzePeak peak2; //xy=331,302
AudioOutputI2S i2s1; //xy=337,151
AudioConnection patchCord1(playSdWav1, 0, i2s1, 0);
AudioConnection patchCord2(playSdWav1, 0, peak1, 0);
AudioConnection patchCord3(playSdWav1, 1, i2s1, 1);
AudioConnection patchCord4(playSdWav1, 1, peak2, 0);
AudioControlSGTL5000 sgtl5000_1; //xy=201,390
// GUItool: end automatically generated code
#define TFT_DC 20
#define TFT_CS 21
#define TFT_RST 255 // 255 = unused, connect to 3.3V
#define TFT_MOSI 7
#define TFT_SCLK 14
#define TFT_MISO 12
ILI9341_t3 tft = ILI9341_t3(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_MISO);
// Use these with the Teensy Audio Shield
#define SDCARD_CS_PIN 10
#define SDCARD_MOSI_PIN 7
#define SDCARD_SCK_PIN 14
// Use these with the Teensy 3.5 & 3.6 SD card
//#define SDCARD_CS_PIN BUILTIN_SDCARD
//#define SDCARD_MOSI_PIN 11 // not actually used
//#define SDCARD_SCK_PIN 13 // not actually used
// Use these for the SD+Wiz820 or other adaptors
//#define SDCARD_CS_PIN 4
//#define SDCARD_MOSI_PIN 11
//#define SDCARD_SCK_PIN 13
void setup() {
Serial.begin(9600);
delay(500);
tft.begin();
tft.fillScreen(ILI9341_BLACK);
tft.setTextColor(ILI9341_YELLOW);
tft.setFont(Arial_24);
//tft.setTextSize(3);
tft.setCursor(40, 8);
tft.println("Peak Meter");
AudioMemory(10);
sgtl5000_1.enable();
sgtl5000_1.volume(0.5);
SPI.setMOSI(SDCARD_MOSI_PIN);
SPI.setSCK(SDCARD_SCK_PIN);
if (!(SD.begin(SDCARD_CS_PIN))) {
while (1) {
Serial.println("Unable to access the SD card");
delay(500);
}
}
delay(1000);
}
elapsedMillis msecs;
void loop() {
if (playSdWav1.isPlaying() == false) {
Serial.println("Start playing");
//playSdWav1.play("SDTEST1.WAV");
//playSdWav1.play("SDTEST2.WAV");
playSdWav1.play("SDTEST3.WAV");
//playSdWav1.play("SDTEST4.WAV");
delay(10); // wait for library to parse WAV info
}
if (msecs > 15) {
if (peak1.available() && peak2.available()) {
msecs = 0;
float leftNumber = peak1.read();
float rightNumber = peak2.read();
Serial.print(leftNumber);
Serial.print(", ");
Serial.print(rightNumber);
Serial.println();
// draw the verticle bars
int height = leftNumber * 240;
tft.fillRect(60, 280 - height, 40, height, ILI9341_GREEN);
tft.fillRect(60, 280 - 240, 40, 240 - height, ILI9341_BLACK);
height = rightNumber * 240;
tft.fillRect(140, 280 - height, 40, height, ILI9341_GREEN);
tft.fillRect(140, 280 - 240, 40, 240 - height, ILI9341_BLACK);
// a smarter approach would redraw only the changed portion...
// draw numbers underneath each bar
tft.setFont(Arial_14);
tft.fillRect(60, 284, 40, 16, ILI9341_BLACK);
tft.setCursor(60, 284);
tft.print(leftNumber);
tft.fillRect(140, 284, 40, 16, ILI9341_BLACK);
tft.setCursor(140, 284);
tft.print(rightNumber);
}
}
}
