Tiny ESP DeskBuddy Dashboard

#include <Arduino.h>
#include <Arduino_GFX_Library.h>
#include <ArduinoJson.h>
#include <HTTPClient.h>
#include <WiFi.h>
#include <Wire.h>
#include <Preferences.h>
#include <time.h>
#include <math.h>

// Desk Buddy for Estella.  This file deliberately contains no Wi-Fi password.
// Copy include/secrets.example.h to include/secrets.h and fill in your own values.
#include "secrets.h"

#define TOUCH_SCL 19
#define TOUCH_RST 20
#define TOUCH_INT 21
#ifndef WIFI_SSID
#define WIFI_SSID ""
#endif
#ifndef WIFI_PASSWORD
#define WIFI_PASSWORD ""
#endif
#ifndef GITHUB_USER
#define GITHUB_USER ""
#endif


// Hoisted type definitions
enum Page:uint8_t { FACE,TIME_PAGE,DATE_PAGE,MOOD_PAGE,JOKE_PAGE,CHAT_PAGE,STUDY_PAGE,TIMER_PAGE,WEATHER_PAGE,STATUS_PAGE,SETTINGS_PAGE,PAGE_COUNT };

enum Mood:uint8_t { HAPPY,NORMAL,SAD,ANGRY,EXCITED,SURPRISED,TIRED };


// Forward declarations
void say(const String &s, Mood m);
void action(const char *s);
void chooseReply();
void lcdInit();
void txt(const String&s,int y,uint8_t size,uint16_t c);
void arrows();
void faceEye(int cx,int cy,int ew,int eh,bool closed);
void drawFace();
void drawPage();
void render();
bool touch(uint16_t &x,uint16_t&y);
void nextPage(int d);
void handleGesture();
void taps();
void readTouch();
void updateTime();
void fetchWeather();
void daily();
void idle();
void readAudio();

constexpr int LCD_BL=23, LCD_DC=15, LCD_CS=14, LCD_SCK=1, LCD_MOSI=2, LCD_RST=22;
constexpr int TOUCH_SDA=18, TOUCH_SCL=19, TOUCH_RST=20, TOUCH_INT=21;
constexpr uint8_t TOUCH_ADDR=0x63, IMU_ADDR=0x6B, AUDIO_ADDR=0x42;
constexpr int W=320, H=172;
constexpr uint16_t BG=RGB565_BLACK, FG=RGB565_WHITE, DIM=0x7BEF;

Arduino_DataBus *bus=new Arduino_HWSPI(LCD_DC,LCD_CS,LCD_SCK,LCD_MOSI);
Arduino_GFX *panel=new Arduino_ST7789(bus,LCD_RST,0,false,172,320,34,0,34,0);
Arduino_Canvas *screen=new Arduino_Canvas(W,H,panel);
Preferences prefs;



Page page=FACE; Mood mood=NORMAL; bool touchDown=false, moved=false, returnedFromIdle=false;
uint16_t sx,sy,lx,ly; uint32_t downAt, lastRelease, lastInput, lastFrame, lastMinute, idleStage;
uint8_t tapCount=0; bool pageDirty=true, blink=false, listening=false, focusRunning=false, breakMode=false;
uint32_t blinkAt=0, blinkEnd=0, timerStarted=0; int eyeX=0, eyeY=0; String banner=""; uint32_t bannerUntil=0;
String weather="Weather offline"; float temperature=0; bool weatherOK=false; String heard="";
const char* moodNames[]={"Happy","Normal","Sad","Angry","Excited","Surprised","Tired"};
const char* greetings[]={"Hi, Estella!","How are you feeling today?","What are you working on?","I am happy to see you!","Have an amazing day!"};
const char* encouragement[]={"You are doing great!","Would you like a study break?","What are we learning today?","Want to hear a joke?","Yay! You finished your work!"};
const char* jokes[]={"Why did the robot study? To become a little brighter!","What do robots eat? Micro chips!","Why was the calendar calm? Its days were numbered."};
int lastReply=-1, dailyGreeting=0, dailyJoke=0, dailyTip=0, dailyMood=0;

void say(const String &s, Mood m=NORMAL) { banner=s; bannerUntil=millis()+4200; mood=m; pageDirty=true; Serial.print("RESPONSE: ");Serial.println(s); Wire.beginTransmission(AUDIO_ADDR); Wire.write((uint8_t)0x01); Wire.write(s.c_str()); Wire.endTransmission(); }
void action(const char *s){Serial.println(s); lastInput=millis(); idleStage=0; if(returnedFromIdle){returnedFromIdle=false; say("You are back! I missed you!",EXCITED);} }
void chooseReply(){ int n; do n=random(0,10);while(n==lastReply);lastReply=n; if(n<5) say(greetings[n], n==3?HAPPY:NORMAL); else say(encouragement[n-5],HAPPY); }

void lcdInit(){
  // Waveshare panel wake/colour commands; rotation is set exactly once in setup.
  bus->beginWrite(); bus->writeCommand(0x11); bus->endWrite(); delay(120);
  bus->beginWrite(); bus->writeCommand(0x3A); bus->write(0x05); bus->writeCommand(0x21); bus->writeCommand(0x29); bus->endWrite();
}
void txt(const String&s,int y,uint8_t size=2,uint16_t c=FG){screen->setTextSize(size);screen->setTextColor(c);int x=(W-(int)s.length()*6*size)/2;screen->setCursor(max(2,x),y);screen->print(s);}
void arrows(){screen->setTextSize(2);screen->setTextColor(DIM);screen->setCursor(5,H-17);screen->print("<");screen->setCursor(W-16,H-17);screen->print(">");}
void faceEye(int cx,int cy,int ew,int eh,bool closed){if(closed){screen->fillRoundRect(cx-ew/2,cy-2,ew,5,3,FG);return;}screen->fillRoundRect(cx-ew/2,cy-eh/2,ew,eh,eh/2,FG);screen->fillRoundRect(cx-7+eyeX,cy-8+eyeY,14,16,7,BG);}
void drawFace(){
 screen->fillScreen(BG); uint32_t n=millis(); if(n>blinkAt){blinkEnd=n+110;blinkAt=n+1100+random(0,2600);} blink=n<blinkEnd;
 int ew=52,eh=64; if(mood==TIRED)eh=22; if(mood==ANGRY)eh=40; if(mood==SURPRISED){ew=48;eh=72;} eyeX=(int)(sin(n*.0013)*5);eyeY=(int)(cos(n*.0011)*3);
 faceEye(108,73,ew,eh,blink); faceEye(212,73,ew,eh,blink);
 if(mood==HAPPY||mood==EXCITED){screen->drawArc(160,104,38,29,25,155,FG);screen->drawArc(160,105,37,28,25,155,FG);} 
 else if(mood==SAD){screen->drawArc(160,139,35,29,205,335,FG);}
 else if(mood==ANGRY){screen->drawLine(76,39,126,50,FG);screen->drawLine(244,39,194,50,FG);screen->fillRoundRect(135,115,50,5,3,FG);} 
 else if(mood==SURPRISED)screen->drawCircle(160,116,12,FG); else if(mood==TIRED)screen->drawLine(139,116,181,116,FG);
 if(listening){screen->fillCircle(18,18,9,FG);screen->fillRoundRect(15,8,6,16,3,BG);txt("I'm listening...",143,1);}
 if(millis()<bannerUntil){screen->fillRoundRect(25,137,270,24,10,0x18E3);txt(banner,145,1);} arrows();
}
void drawPage(){
 screen->fillScreen(BG); arrows(); String line;
 if(page==TIME_PAGE){struct tm t;if(getLocalTime(&t,10)){char b[18];strftime(b,sizeof b,"%I:%M %p",&t);txt(b,53,5);strftime(b,sizeof b,"AEST (UTC+10)",&t);txt(b,126,1);}else txt("Time waiting for Wi-Fi",76,2);}
 else if(page==DATE_PAGE){struct tm t;if(getLocalTime(&t,10)){char b[28];strftime(b,sizeof b,"%A",&t);txt(b,38,3);strftime(b,sizeof b,"%-d %B %Y",&t);txt(b,90,2);}else txt("Date unavailable offline",76,2);}
 else if(page==MOOD_PAGE){txt("I feel",45,2);txt(moodNames[mood],80,4);}
 else if(page==JOKE_PAGE){txt("Joke",20,2);txt(jokes[dailyJoke],55,1);txt("Tap for another",135,1,DIM);}
 else if(page==CHAT_PAGE){txt("Let's chat",25,3);txt("Ask me about time, date,",65,1);txt("weather, jokes or studying.",84,1);}
 else if(page==STUDY_PAGE){txt("Study buddy",25,3);txt("One small step counts.",67,2);txt("You can do this, Estella!",105,1);}
 else if(page==TIMER_PAGE){uint32_t total=breakMode?300:1500;uint32_t used=focusRunning?(millis()-timerStarted)/1000:0;uint32_t left=used>=total?0:total-used;char b[12];snprintf(b,sizeof b,"%02lu:%02lu",left/60,left%60);txt(b,48,5);txt(breakMode?"5 minute break":"25 minute focus",124,2);}
 else if(page==WEATHER_PAGE){txt("Queensland weather",20,2);if(weatherOK){txt(String(round(temperature))+" C",52,5);txt(weather,124,2);}else {txt("Offline weather",66,2);txt("Connect Wi-Fi to update",101,1);}}
 else if(page==STATUS_PAGE){txt("Status",22,3);txt(WiFi.status()==WL_CONNECTED?"Wi-Fi connected":"Wi-Fi offline",60,2);txt("Battery: check charger LED",96,1);txt("Audio link: I2C 0x42",120,1);}
 else if(page==SETTINGS_PAGE){txt("Settings",20,3);txt("Tap: friendly reply",53,1);txt("Hold: listen",72,1);txt("Up: menu   Down: face",91,1);txt("Wi-Fi: include/secrets.h",123,1);}
 if(millis()<bannerUntil){screen->fillRoundRect(25,137,270,24,10,0x18E3);txt(banner,145,1);}
}
void render(){if(page==FACE)drawFace();else drawPage();screen->flush();pageDirty=false;}

bool touch(uint16_t &x,uint16_t&y){Wire.beginTransmission(TOUCH_ADDR);Wire.write(0x01);if(Wire.endTransmission()!=0)return false;if(Wire.requestFrom(TOUCH_ADDR,(uint8_t)6)!=6)return false;uint8_t b[6];for(int i=0;i<6;i++)b[i]=Wire.read();if(!(b[1]&15))return false;uint16_t rx=((b[2]&15)<<8)|b[3],ry=((b[4]&15)<<8)|b[5];x=min((uint16_t)(W-1),(uint16_t)((uint32_t)ry*(W-1)/319));y=min((uint16_t)(H-1),(uint16_t)((uint32_t)rx*(H-1)/171));return true;}
void nextPage(int d){page=(Page)((page+PAGE_COUNT+d)%PAGE_COUNT);pageDirty=true;lastInput=millis();}
void handleGesture(){uint32_t held=millis()-downAt;int dx=(int)lx-sx,dy=(int)ly-sy;if(held>800&&!moved){action("LONG PRESS");listening=true;say("I am listening...",SURPRISED);Wire.beginTransmission(AUDIO_ADDR);Wire.write((uint8_t)0x10);Wire.endTransmission();return;}if(abs(dx)>55&&abs(dx)>abs(dy)){if(dx<0){action("SWIPE LEFT");nextPage(1);}else{action("SWIPE RIGHT");nextPage(-1);}return;}if(abs(dy)>45){if(dy<0){action("SWIPE UP");page=SETTINGS_PAGE;}else{action("SWIPE DOWN");page=FACE;}pageDirty=true;return;}if(held<650&&!moved){tapCount++;lastRelease=millis();}}
void taps(){if(!tapCount||millis()-lastRelease<380)return;uint8_t n=tapCount;tapCount=0;if(n>=5){action("MANY FAST TAPS");say("Hey! That tickles!",ANGRY);}else if(n==3){action("TRIPLE TAP");page=JOKE_PAGE;say(jokes[random(0,3)],HAPPY);}else if(n==2){action("DOUBLE TAP");page=TIME_PAGE;}else{action("TAP DETECTED");chooseReply();}pageDirty=true;}
void readTouch(){uint16_t x,y;bool now=touch(x,y);if(now&&!touchDown){touchDown=true;moved=false;sx=lx=x;sy=ly=y;downAt=millis();}else if(now){lx=x;ly=y;if(abs((int)x-sx)>10||abs((int)y-sy)>10)moved=true;}else if(touchDown){touchDown=false;handleGesture();}taps();}

void updateTime(){if(WiFi.status()==WL_CONNECTED)return;if(strlen(WIFI_SSID)==0)return;WiFi.mode(WIFI_STA);WiFi.begin(WIFI_SSID,WIFI_PASSWORD);uint32_t start=millis();while(WiFi.status()!=WL_CONNECTED&&millis()-start<3500)delay(25);if(WiFi.status()==WL_CONNECTED){configTime(10*3600,0,"pool.ntp.org","time.google.com");Serial.println("Wi-Fi connected; requesting Queensland time");}else Serial.println("Offline mode: Wi-Fi unavailable");}
void fetchWeather(){if(WiFi.status()!=WL_CONNECTED)return;HTTPClient h;h.setTimeout(5000);if(!h.begin("http://api.open-meteo.com/v1/forecast?latitude=-27.47&longitude=153.03&current=temperature_2m,weather_code&timezone=Australia%2FBrisbane"))return;if(h.GET()==200){JsonDocument d;if(!deserializeJson(d,h.getString())){temperature=d["current"]["temperature_2m"].as<float>();int c=d["current"]["weather_code"].as<int>();weather=c==0?"Clear":c<4?"Cloudy":c<70?"Rain":"Changeable";weatherOK=true;}}h.end();}
void daily(){struct tm t;if(!getLocalTime(&t,1))return;char key[12];strftime(key,sizeof key,"%Y-%m-%d",&t);String old=prefs.getString("date","");if(old!=key){int oldG=prefs.getInt("g",-1);do dailyGreeting=random(0,5);while(dailyGreeting==oldG);dailyJoke=random(0,3);dailyTip=random(0,5);dailyMood=random(0,7);prefs.putString("date",key);prefs.putInt("g",dailyGreeting);prefs.putInt("j",dailyJoke);prefs.putInt("tip",dailyTip);prefs.putInt("m",dailyMood);say(greetings[dailyGreeting],(Mood)dailyMood);}}
void idle(){uint32_t d=millis()-lastInput;if(d>600000&&idleStage<3){idleStage=3;mood=TIRED;say("I'll wait here for you.",TIRED);}else if(d>300000&&idleStage<2){idleStage=2;mood=SAD;say("I'm feeling a little lonely.",SAD);}else if(d>120000&&idleStage<1){idleStage=1;say("Estella, are you still there?",SAD);}}
void readAudio(){Wire.requestFrom(AUDIO_ADDR,(uint8_t)31);String r="";while(Wire.available())r+=(char)Wire.read();r.trim();if(r.length()){heard=r;listening=false;Serial.print("HEARD: ");Serial.println(r);String q=r;q.toLowerCase();if(q.indexOf("time")>=0)page=TIME_PAGE;else if(q.indexOf("date")>=0)page=DATE_PAGE;else if(q.indexOf("weather")>=0)page=WEATHER_PAGE;else if(q.indexOf("joke")>=0){page=JOKE_PAGE;say(jokes[random(0,3)],HAPPY);}else if(q.indexOf("stop")>=0){say("Okay, I stopped listening.",NORMAL);listening=false;}else if(q.indexOf("study")>=0)page=STUDY_PAGE;else if(q.indexOf("focus")>=0){page=TIMER_PAGE;focusRunning=true;timerStarted=millis();}else say("Sorry, could you say that again?",NORMAL);pageDirty=true;}}
void setup(){Serial.begin(115200);delay(100);randomSeed(micros());panel->begin(40000000);lcdInit();panel->setRotation(1); // permanent horizontal landscape; the sole rotation call
 pinMode(LCD_BL,OUTPUT);digitalWrite(LCD_BL,HIGH);Wire.begin(TOUCH_SDA,TOUCH_SCL);Wire.setClock(100000);pinMode(TOUCH_RST,OUTPUT);digitalWrite(TOUCH_RST,LOW);delay(10);digitalWrite(TOUCH_RST,HIGH);pinMode(TOUCH_INT,INPUT_PULLUP);prefs.begin("deskbuddy",false);dailyGreeting=prefs.getInt("g",0);dailyJoke=prefs.getInt("j",0);dailyTip=prefs.getInt("tip",0);dailyMood=prefs.getInt("m",NORMAL);lastInput=millis();blinkAt=millis()+1000;updateTime();fetchWeather();Serial.println("Desk Buddy touch ready: TAP, SWIPE LEFT/RIGHT/UP/DOWN and LONG PRESS are logged.");}
void loop(){readTouch();readAudio();idle();if(millis()-lastMinute>60000){lastMinute=millis();daily();fetchWeather();pageDirty=true;}if(page!=FACE&&millis()-lastInput>5000){page=FACE;pageDirty=true;}if(page==FACE&&millis()-lastFrame>50){lastFrame=millis();render();}else if(pageDirty)render();delay(8);}