Build A Tiny Esp Deskbuddy Using Waveshare Esp32

#include <Arduino.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include <ArduinoJson.h>
#include <HTTPClient.h>
#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <Wire.h>
#include <XPT2046_Touchscreen.h>
#include <MPU6050.h>
#include <time.h>
#include <math.h>
#include "secrets.h"

// DOIT ESP32 DEVKIT V1 with a 2.4-inch ILI9341/XPT2046 SPI touch display.
#define TFT_SCK 18
#define TFT_MOSI 23
#define TFT_MISO 19
#define TFT_CS 4
#define TFT_DC 25
#define TFT_RST 26
#define TOUCH_CS 27
#define I2C_SDA 21
#define I2C_SCL 22


enum Page { FACE, CLOCK_PAGE, DATE_PAGE, WEATHER_PAGE, MOON_PAGE, STOCK_PAGE, GITHUB_PAGE, PAGE_COUNT };


// Forward declarations
void text(const String &s, int x, int y, uint8_t size);
void center(const String &s, int y, uint8_t size);
void header(const char *title);
void dots();
bool wifiReady();
bool readTouch(uint16_t &x, uint16_t &y);
bool setupIMU();
void updateIMU();
void fetchWeather();
void fetchStock();
void fetchGitHub();
void face();
void clockPage();
void datePage();
void weatherPage();
void moonPage();
void stockPage();
void githubPage();
void draw();
void handleTouch();

const int W = 320, H = 240;
const uint16_t WHITE = ILI9341_WHITE, BLACK = ILI9341_BLACK, GREY = 0x8410;
Adafruit_ILI9341 tft(TFT_CS, TFT_DC, TFT_RST);
XPT2046_Touchscreen touch(TOUCH_CS);
MPU6050 mpu;


Page page = FACE;
uint8_t mood = 0;
bool redraw = true, touched = false, wifiTried = false, imuOK = false;
uint16_t downX = 0, lastX = 0;
uint32_t downAt = 0, lastFace = 0, lastSecond = UINT32_MAX, lastFetch = 0;
float eyeX = 0, eyeY = 0;
String weatherText = "WAITING";
int weatherF = 0, humidity = 0, windMph = 0, followers = 0, repos = 0;
float aapl = 0;
bool weatherOK = false, stockOK = false, githubOK = false;

void text(const String &s, int x, int y, uint8_t size = 1) { tft.setTextSize(size); tft.setTextColor(WHITE); tft.setCursor(x, y); tft.print(s); }
void center(const String &s, int y, uint8_t size = 1) { text(s, max(0, (W - (int)s.length() * 6 * size) / 2), y, size); }
void header(const char *title) { tft.fillScreen(BLACK); text(title, 8, 8, 2); tft.drawFastHLine(0, 29, W, WHITE); }
void dots() { for (int i = 0; i < PAGE_COUNT; i++) tft.fillCircle(112 + i * 16, 230, 3, i == page ? WHITE : GREY); }

bool wifiReady() {
  if (WiFi.status() == WL_CONNECTED) return true;
  if (wifiTried || strlen(WIFI_SSID) == 0) return false;
  wifiTried = true; WiFi.mode(WIFI_STA); WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  uint32_t started = millis();
  while (WiFi.status() != WL_CONNECTED && millis() - started < 8000) delay(100);
  if (WiFi.status() == WL_CONNECTED) configTime(UTC_OFFSET_SECONDS, 0, "pool.ntp.org", "time.nist.gov");
  return WiFi.status() == WL_CONNECTED;
}

bool readTouch(uint16_t &x, uint16_t &y) {
  if (!touch.touched()) return false;
  TS_Point p = touch.getPoint();
  x = constrain(map(p.y, 200, 3800, 0, W - 1), 0, W - 1);
  y = constrain(map(p.x, 200, 3800, H - 1, 0), 0, H - 1);
  lastX = x;
  return true;
}

bool setupIMU() {
  mpu.initialize();
  return mpu.testConnection();
}
void updateIMU() {
  if (!imuOK) { eyeX = sin(millis() / 1100.0f) * 5; eyeY = cos(millis() / 1400.0f) * 3; return; }
  int16_t ax, ay, az;
  mpu.getAcceleration(&ax, &ay, &az);
  eyeX = constrain(eyeX * .85f - (ay / 8192.0f) * 2.5f, -9, 9);
  eyeY = constrain(eyeY * .85f + (ax / 8192.0f) * 2.0f, -6, 6);
}

const char *weatherName(int c) { if (c == 0) return "CLEAR"; if (c < 3) return "PARTLY CLOUDY"; if (c == 3) return "CLOUDY"; if (c < 49) return "FOG"; if (c < 68 || (c > 79 && c < 83)) return "RAIN"; if (c < 78) return "SNOW"; return "STORM"; }
void fetchWeather() {
  if (!wifiReady()) return;
  HTTPClient h;
  String url = "https://api.open-meteo.com/v1/forecast?latitude=" + String(WEATHER_LAT, 4) + "&longitude=" + String(WEATHER_LON, 4) + "&current=temperature_2m,relative_humidity_2m,weather_code,wind_speed_10m&temperature_unit=fahrenheit&wind_speed_unit=mph";
  h.begin(url); h.setTimeout(6000);
  if (h.GET() == 200) { JsonDocument d; if (!deserializeJson(d, h.getString())) { weatherF = round(d["current"]["temperature_2m"].as<float>()); humidity = d["current"]["relative_humidity_2m"].as<int>(); windMph = round(d["current"]["wind_speed_10m"].as<float>()); weatherText = weatherName(d["current"]["weather_code"].as<int>()); weatherOK = true; } }
  h.end();
}
void fetchStock() {
  if (!wifiReady()) return;
  WiFiClientSecure c; c.setInsecure(); HTTPClient h; h.begin(c, "https://stooq.com/q/l/?s=aapl.us&f=sd2t2ohlcv&h&e=csv"); h.setTimeout(7000);
  if (h.GET() == 200) { String s = h.getString(); int line = s.indexOf('\n'), comma = line; for (int i = 0; i < 6 && comma >= 0; i++) comma = s.indexOf(',', comma + 1); if (comma > 0) { int end = s.indexOf(',', comma + 1); aapl = s.substring(comma + 1, end).toFloat(); stockOK = aapl > 0; } }
  h.end();
}
void fetchGitHub() {
  if (!wifiReady() || strlen(GITHUB_USER) == 0) return;
  WiFiClientSecure c; c.setInsecure(); HTTPClient h; h.begin(c, String("https://api.github.com/users/") + GITHUB_USER); h.addHeader("User-Agent", "DeskBuddy"); h.setTimeout(7000);
  if (h.GET() == 200) { JsonDocument d; if (!deserializeJson(d, h.getString())) { followers = d["followers"] | 0; repos = d["public_repos"] | 0; githubOK = true; } }
  h.end();
}

void face() { header("DESKBUDDY"); int ex = (int)eyeX, ey = (int)eyeY; for (int cx : {110, 210}) { tft.fillRoundRect(cx - 34, 60, 68, 58, 28, WHITE); tft.fillCircle(cx + ex, 89 + ey, 13, BLACK); } if (mood == 0) tft.drawCircle(160, 130, 24, WHITE); else if (mood == 1) tft.fillCircle(160, 143, 14, WHITE); else if (mood == 2) tft.drawFastHLine(130, 144, 60, WHITE); else tft.drawLine(132, 148, 188, 134, WHITE); center("TAP: MOOD    SWIPE: PAGES", 197, 1); dots(); }
void clockPage() { header("CLOCK"); struct tm now; if (getLocalTime(&now, 20)) { char b[16]; strftime(b, sizeof b, "%H:%M:%S", &now); center(b, 82, 4); } else center("WAITING FOR TIME", 110, 2); dots(); }
void datePage() { header("DATE"); struct tm now; if (getLocalTime(&now, 20)) { char b[28]; strftime(b, sizeof b, "%A", &now); center(b, 75, 3); strftime(b, sizeof b, "%d %b %Y", &now); center(b, 125, 3); } else center("CONNECT WIFI FOR TIME", 110, 2); dots(); }
void weatherPage() { header("WEATHER"); if (!wifiReady()) center("ADD WIFI TO secrets.h", 105, 2); else if (!weatherOK) center("UPDATING...", 105, 2); else { center(String(weatherF) + " F", 58, 6); center(weatherText, 142, 2); center("H " + String(humidity) + "%   WIND " + String(windMph) + " MPH", 175, 1); } dots(); }
void moonPage() { header("MOON"); time_t now = time(nullptr); float p = fmod((now / 86400.0f - 10962.76f) / 29.53059f, 1); if (p < 0) p += 1; int r = 48, cx = 240, cy = 122; tft.fillCircle(cx, cy, r, WHITE); tft.fillCircle(cx + (int)(cos(p * 6.28318f) * r), cy, r, BLACK); center(p < .25 ? "WAXING" : p < .5 ? "FULL MOON" : p < .75 ? "WANING" : "NEW MOON", 68, 2); text("ILLUMINATION", 25, 118); text(String((int)((1 - cos(p * 6.28318f)) * 50)) + "%", 48, 142, 3); dots(); }
void stockPage() { header("AAPL QUOTE"); if (!wifiReady()) center("ADD WIFI TO secrets.h", 105, 2); else if (!stockOK) center("UPDATING...", 105, 2); else center("$" + String(aapl, 2), 92, 5); dots(); }
void githubPage() { header("GITHUB"); if (strlen(GITHUB_USER) == 0) center("SET GITHUB_USER IN secrets.h", 105, 1); else if (!githubOK) center("UPDATING...", 105, 2); else { center("@" + String(GITHUB_USER), 65, 2); center(String(followers) + " FOLLOWERS", 112, 3); center(String(repos) + " PUBLIC REPOS", 158, 2); } dots(); }
void draw() { switch (page) { case FACE: face(); break; case CLOCK_PAGE: clockPage(); break; case DATE_PAGE: datePage(); break; case WEATHER_PAGE: weatherPage(); break; case MOON_PAGE: moonPage(); break; case STOCK_PAGE: stockPage(); break; default: githubPage(); } redraw = false; }
void handleTouch() { uint16_t x, y; bool down = readTouch(x, y); if (down && !touched) { touched = true; downX = x; downAt = millis(); } if (!down && touched) { int dx = (int)lastX - (int)downX; if (abs(dx) > 45) page = (Page)((page + (dx < 0 ? 1 : PAGE_COUNT - 1)) % PAGE_COUNT); else if (millis() - downAt < 700 && page == FACE) mood = (mood + 1) % 4; redraw = true; touched = false; } }

void setup() { Serial.begin(115200); SPI.begin(TFT_SCK, TFT_MISO, TFT_MOSI, TFT_CS); tft.begin(); tft.setRotation(1); tft.fillScreen(BLACK); touch.begin(); touch.setRotation(1); Wire.begin(I2C_SDA, I2C_SCL); Wire.setClock(400000); imuOK = setupIMU(); }
void loop() { handleTouch(); updateIMU(); uint32_t now = millis(); if (page == FACE && now - lastFace >= 50) { lastFace = now; redraw = true; } if ((page == CLOCK_PAGE || page == DATE_PAGE) && now / 1000 != lastSecond) { lastSecond = now / 1000; redraw = true; } if (now - lastFetch > 600000 || (lastFetch == 0 && wifiReady())) { lastFetch = now; fetchWeather(); fetchStock(); fetchGitHub(); redraw = true; } if (redraw) draw(); delay(8); }