The selftest.ino sketch will initialize all the sensors and respond to the buttons and capacitive touch pads. Go ahead and upload it to your FunHouse and start pressing buttons. This will also slowly color-cycle the DotStar LEDs and blink the red LED.

#include <Adafruit_DotStar.h>
#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <Adafruit_DPS310.h>
#include <Adafruit_AHTX0.h>

#define NUM_DOTSTAR 5
#define BG_COLOR ST77XX_BLACK

// display!
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RESET);
// LEDs!
Adafruit_DotStar pixels(NUM_DOTSTAR, PIN_DOTSTAR_DATA, PIN_DOTSTAR_CLOCK, DOTSTAR_BRG);
// sensors!
Adafruit_DPS310 dps;
Adafruit_AHTX0 aht;

uint8_t LED_dutycycle = 0;
uint16_t firstPixelHue = 0;

void setup() {
  Serial.begin(115200);
  delay(100);
  
  pixels.begin(); // Initialize pins for output
  pixels.show();  // Turn all LEDs off ASAP
  pixels.setBrightness(20);

  pinMode(BUTTON_DOWN, INPUT_PULLDOWN);
  pinMode(BUTTON_SELECT, INPUT_PULLDOWN);
  pinMode(BUTTON_UP, INPUT_PULLDOWN);

  //analogReadResolution(13);
  
  tft.init(240, 240);                // Initialize ST7789 screen
  pinMode(TFT_BACKLIGHT, OUTPUT);
  digitalWrite(TFT_BACKLIGHT, HIGH); // Backlight on

  tft.fillScreen(BG_COLOR);
  tft.setTextSize(2);
  tft.setTextColor(ST77XX_YELLOW);
  tft.setTextWrap(false);

  // check DPS!
  tft.setCursor(0, 0);
  tft.setTextColor(ST77XX_YELLOW);
  tft.print("DP310? ");

  
  if (! dps.begin_I2C()) {  
    tft.setTextColor(ST77XX_RED);
    tft.println("FAIL!");
    while (1) delay(100);
  }
  tft.setTextColor(ST77XX_GREEN);
  tft.println("OK!");
  dps.configurePressure(DPS310_64HZ, DPS310_64SAMPLES);
  dps.configureTemperature(DPS310_64HZ, DPS310_64SAMPLES);

  // check AHT!
  tft.setCursor(0, 20);
  tft.setTextColor(ST77XX_YELLOW);
  tft.print("AHT20? ");
  
  if (! aht.begin()) {  
    tft.setTextColor(ST77XX_RED);
    tft.println("FAIL!");
    while (1) delay(100);
  }
  tft.setTextColor(ST77XX_GREEN);
  tft.println("OK!");

  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(SPEAKER, OUTPUT);

  ledcSetup(0, 2000 * 80, 8);
  ledcAttachPin(LED_BUILTIN, 0);

  ledcSetup(1, 2000 * 80, 8);
  ledcAttachPin(SPEAKER, 1);
  ledcWrite(1, 0);
}



void loop() {


  /********************* sensors    */
  sensors_event_t humidity, temp, pressure;
  
  tft.setCursor(0, 0);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  dps.getEvents(&temp, &pressure);
  
  tft.print("DP310: ");
  tft.print(temp.temperature, 0);
  tft.print(" C ");
  tft.print(pressure.pressure, 0);
  tft.print(" hPa");
  tft.println("              ");
  Serial.printf("DPS310: %0.1f *C  %0.2f hPa\n", temp.temperature, pressure.pressure);


  tft.setCursor(0, 20);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  aht.getEvent(&humidity, &temp);

  tft.print("AHT20: ");
  tft.print(temp.temperature, 0);
  tft.print(" C ");
  tft.print(humidity.relative_humidity, 0);
  tft.print(" %");
  tft.println("              ");
  Serial.printf("AHT20: %0.1f *C  %0.2f rH\n", temp.temperature, humidity.relative_humidity);


  /****************** BUTTONS */
  tft.setCursor(0, 40);
  tft.setTextColor(ST77XX_YELLOW);
  tft.print("Buttons: ");
  if (! digitalRead(BUTTON_DOWN)) {  
    tft.setTextColor(0x808080);
  } else {
    Serial.println("DOWN pressed");
    tft.setTextColor(ST77XX_WHITE);
  }
  tft.print("DOWN ");

  if (! digitalRead(BUTTON_SELECT)) {  
    tft.setTextColor(0x808080);
  } else {
    Serial.println("SELECT pressed");
    tft.setTextColor(ST77XX_WHITE);
  }
  tft.print("SEL ");
  
  if (! digitalRead(BUTTON_UP)) {  
    tft.setTextColor(0x808080);
  } else {
    Serial.println("UP pressed");
    tft.setTextColor(ST77XX_WHITE);
  }
  tft.println("UP");

  /************************** CAPACITIVE */
  uint16_t touchread;
  
  tft.setCursor(0, 60);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Captouch 6: ");
  touchread = touchRead(6);
  if (touchread < 10000 ) {  
    tft.setTextColor(0x808080, BG_COLOR);
  } else {
    tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  }
  tft.print(touchread);
  tft.println("          ");
  Serial.printf("Captouch #6 reading: %d\n", touchread);
  
  tft.setCursor(0, 80);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Captouch 7: ");
  touchread = touchRead(7);
  if (touchread < 20000 ) {  
    tft.setTextColor(0x808080, BG_COLOR);
  } else {
    tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  }
  tft.print(touchread);
  tft.println("          ");
  Serial.printf("Captouch #7 reading: %d\n", touchread);


  tft.setCursor(0, 100);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Captouch 8: ");
  touchread = touchRead(8);
  if (touchread < 20000 ) {  
    tft.setTextColor(0x808080, BG_COLOR);
  } else {
    tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  }
  tft.print(touchread);
  tft.println("          ");
  Serial.printf("Captouch #8 reading: %d\n", touchread);


  /************************** ANALOG READ */
  uint16_t analogread;

  tft.setCursor(0, 120);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Analog 0: ");
  analogread = analogRead(A0);
  if (analogread < 8000 ) {  
    tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  } else {
    tft.setTextColor(ST77XX_RED, BG_COLOR);
  }
  tft.print(analogread);
  tft.println("    ");
  Serial.printf("Analog A0 reading: %d\n", analogread);


  tft.setCursor(0, 140);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Analog 1: ");
  analogread = analogRead(A1);
  if (analogread < 8000 ) {  
    tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  } else {
    tft.setTextColor(ST77XX_RED, BG_COLOR);
  }
  tft.print(analogread);
  tft.println("    ");
  Serial.printf("Analog A1 reading: %d\n", analogread);

  
  tft.setCursor(0, 160);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Analog 2: ");
  analogread = analogRead(A2);
  if (analogread < 8000 ) {  
    tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  } else {
    tft.setTextColor(ST77XX_RED, BG_COLOR);
  }
  tft.print(analogread);
  tft.println("    ");
  Serial.printf("Analog A2 reading: %d\n", analogread);

  tft.setCursor(0, 180);
  tft.setTextColor(ST77XX_YELLOW, BG_COLOR);
  tft.print("Light: ");
  analogread = analogRead(A3);
  tft.setTextColor(ST77XX_WHITE, BG_COLOR);
  tft.print(analogread);
  tft.println("    ");
  Serial.printf("Light sensor reading: %d\n", analogread);
  
  /************************** Beep! */
  if (digitalRead(BUTTON_SELECT)) {  
     Serial.println("** Beep! ***");
     tone(SPEAKER, 988, 100);  // tone1 - B5
     tone(SPEAKER, 1319, 200); // tone2 - E6
     delay(100);
     //tone(SPEAKER, 2000, 100);
  }
  
  /************************** LEDs */
  // pulse red LED
  ledcWrite(0, LED_dutycycle);
  LED_dutycycle += 32;
  
  // rainbow dotstars
  for (int i=0; i<pixels.numPixels(); i++) { // For each pixel in strip...
      int pixelHue = firstPixelHue + (i * 65536L / pixels.numPixels());
      pixels.setPixelColor(i, pixels.gamma32(pixels.ColorHSV(pixelHue)));
  }
  pixels.show(); // Update strip with new contents
  firstPixelHue += 256;
}


void tone(uint8_t pin, float frequecy, float duration) {
  ledcSetup(1, frequecy * 80, 8);
  ledcAttachPin(pin, 1);
  ledcWrite(1, 128);
  delay(duration);
  ledcWrite(1, 0);
}

This guide was first published on Apr 20, 2021. It was last updated on 2021-05-04 15:26:05 -0400.

This page (Arduino Self Test Example) was last updated on Nov 28, 2021.

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