EDITOR

The editor(...) method can be used to append characters, numbers, and text to the display area
of the touchscreen.
Line breaks can be implemented with editor("\n");.

The curser(line,column) method can be used to set the position from which 
characters are inserted into the editor.

editor(...) works slightly more efficiently than the text(...) function.
A monospace font is used.
The number of lines and characters per line depends on the font size set with
setFont(...).

ACCELERATION VALUES

When the acceleration() function is called, the sensor values of the three-axis
acceleration sensor are read out and stored in the following variables:

int  accX;
int  accY;
int  accZ;
int  absaccX; //Absolute values of the same sensor values...
int  absaccY;
int  absaccZ;

TOUCHPOSITION

When the touch() function is called, the current position of the touch 
on the touchscreen is stored in the following variables:

int  mouseX=0;
int  mouseY=0;

TIME

When the updateTime() function is called, the current radio time is 
retrieved and its components can be accessed using the following functions:

int getHour12() //12-hour value for the current hour
int getHour()   //24-hour value for the current hour
int getMinute() 
int getSecond() 

SERIAL MONITOR

During the development phase, it makes sense to read variables at the clock's runtime.
The variables can be transferred to the serial monitor of the Arduino IDE 
via an interface emulated via the USB connection to the PC.

setupSERIAL(115200); //activates the serial connection to the PC with a baud rate of 115200.
"Serial" is the object that then provides commands for data transmission.
Examples:
if(Serial) Serial.println("WiFi connected");
if(Serial) Serial.print("ip:");
if(Serial) Serial.println(WiFi.localIP());            
if(Serial) Serial.println();

Code 0-1: Additional auxiliary objects and variables.

#include "twatch.h"
#include "variables.h"
#include "functions.h"

void setup() 
{
    setupTWATCH();
    setFont(1, 255,255,255,  255,0,0);
    backlight(true); 
}

void loop() 
{
    text("Hello World!",width/4,height/4);
    delay(100);  
}

Code 0-2: Sample code.

#include "twatch.h"
#include "variables.h"
#include "functions.h"

void setup() 
{
    setupTWATCH();
    backlight(true); 
}

void loop() 
{
    if(touch()) // updates mouseX and mouseY
    {    
       //red background if screen touched
       background(255,0,0);
    }
    else
    {
       //else green 
       background(0,255,0);
    }
    fill(0,0,255);
    //shows a circle at last touch-position, which always is saved in mouseX and mouseY.
    circle(mouseX,mouseY,20);
    delay(100);
}

Code 0-3: Sample code.

#include "twatch.h"
#include "variables.h"
#include "functions.h"

void setup() 
{
    setupTWATCH();
    setFont(1, 255,255,255,  255,0,0);
    backlight(true); 
}

void loop() 
{
    bool res = acceleration();

    cursor(0,0);

    if(accX>=0) editor('+'); else editor('-');
    if(absaccX<1000) editor('0'); 
    if(absaccX<100) editor('0'); 
    if(absaccX<10) editor('0'); 
    editor(absaccX); 
    editor('\n');

    if(accY>=0) editor('+'); else editor('-');
    if(absaccY<1000) editor('0'); 
    if(absaccY<100) editor('0'); 
    if(absaccY<10) editor('0');         
    editor(absaccY); 
    editor('\n');

    if(accZ>=0) editor('+'); else editor('-');
    if(absaccZ<1000) editor('0'); 
    if(absaccZ<100) editor('0'); 
    if(absaccZ<10) editor('0');         
    editor(absaccZ); 
    editor('\n');

    delay(100);
}

Code 0-4: Sample code.

#include "twatch.h"
#include "variables.h"
#include "functions.h"

void setup() 
{
    setupTWATCH();
    setFont(1, 255,255,255,  255,0,0);
    updateTime(); //RTC Zeit holen
    backlight(true); 
}

void loop() 
{
    if(button())
       updateTime(); //RTC Zeit holen

    cursor(0,0);
    if(getHour()<10) editor('0');
    editor(getHour());
    editor('\n');
    if(getMinute()<10) editor('0');
    editor(getMinute());
    editor('\n');
    if(getSecond()<10) editor('0');
    editor(getSecond());
    editor('\n');

    delay(100);
}

Code 0-5: Sample code.

import hypermedia.net.*;
String IP = "10.42.0.255"; //ANPASSEN! Broadcast IP des Hotspotnetzes
int PORT = 6000; //für UDP benötigt.
UDP udp;
String NACHRICHT="";

public void setup()
{
    size(700,500);
    udp = new UDP( this, 6000 );
    udp.listen( true ); 
    frameRate(10);
}

public void draw()
{
    background(255);
    fill(0);
    textSize(20);
    text("Empfangen:",30,30);
    text(NACHRICHT,30,60);    
    udp.send("Test", IP, PORT ); //Dummy Nachricht an Smartwatch, um Antwort auszulösen.
}

//Callbackroutine für das Empfangen der IMU-Werte:
void receive( byte[] data, String ip, int port ) 
{  
      String x = new String( data );
      if(x!=null && !x.equals("Test"))
         NACHRICHT = x;
}     

Code 0-6: Complete PC/laptop-based reception program. ATTENTION: Broadcast IP must be adjusted.

import hypermedia.net.*;
String IP = "192.168.96.255"; 
int PORT = 6000; //für UDP benötigt.
UDP udp;
String NACHRICHT="";

public void setup()
{
    fullScreen();
    udp = new UDP( this, 6000 );
    udp.listen( true ); 
    frameRate(10);
    orientation(LANDSCAPE);
}

public void draw()
{
    background(255);
    fill(0);
    textSize(130);
    text("Empfangen:",130,130);
    text(NACHRICHT,130,260);
    
    udp.send("Test", IP, PORT );
}

void receive( byte[] data, String ip, int port ) 
{  
   String x = new String( data );
   if(x!=null && !x.equals("Test"))
      NACHRICHT = x;
}     

Code 0-7: Complete reception program, Android version.

#include "twatch.h"
#include "variables.h"
#include "functions.h"

const char* hotspot = "hotspotK";
const char* password = "12345678";
int udpport = 6000;

void setup() 
{
    setupTWATCH();
    setupWIFI(hotspot,password,udpport);
    setFont(1, 255,255,255,  255,0,0);
    backlight(true); 
}

void loop() 
{
    //WiFi-Verbindung herstellen, wenn Knopf gedrückt und falls nicht vorhanden:
    if(button() && !WIFIOKAY) 
    { 
        setupWIFI(hotspot,password,udpport);
    }

    //Beschleunigungswerte aktualisieren:
    acceleration();

    //Wenn WiFi-Verbindung vorhanden und
    //auf Pakete warten aktiviert...
    if(WIFIOKAY && udp.listen(UDPPORT)) 
    {
        //...dann Beschleunigungswerte an PC schicken, wenn dieser
        //etwas gesendet hat:
        udp.onPacket([](AsyncUDPPacket packet) 
        {
                packet.printf("accX=%d accY=%d accZ=%d", accX,accY,accZ);            
        });      
    }        

    cursor(0,0);

    //Beschleunigungswerte auf einfache Art und Weise anzeigen:
    editor(accX);     
    editor('
');
    editor(accY);     
    editor('
');
    editor(accZ);     
    editor('
');
    
    //Falls WiFi Verbindung vorhanden, eigene IP in dem
    //Hotspot-Netz anzeigen:
    if(!WIFIOKAY)
    {
            editor("no WiFi!");
            //editor((unsigned long)millis());
    }
    else
    {
            tft->print(WiFi.localIP()); //...Originalmethode
            //editor(WiFi.localIP()); ...klappt nicht
    }
    editor('
');
    
    delay(100);  
}

Code 0-8: Main tab from the Arduino project TWATCH_PROC023_WiFiminimal, the minimal version of WiFi for the T-WATCH

#include "twatch.h"
#include "variables.h"
#include "functions.h"

void setup() 
{
    setupTWATCH();
    backlight(true); 
}

void loop() 
{
    if(button()) 
    {    
       //red background if button pressed
       background(255,0,0);
    }
    else
    {
       //else green 
       background(0,255,0);
    }
    delay(100);
}

Code 0-9: Sample code.

#include "twatch.h"
#include "variables.h"
#include "functions.h"

void setup() 
{
    setupTWATCH();
    setupMotor();
    backlight(true); 
}

void loop() 
{
    if(button()) 
    {    
       //Motor running if button pressed.
       motor();
    }
    delay(100);
}

Code 0-10: Sample code.