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AZ_TOUCH_BASIC/00_settings.h

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+/*
+     _______. _______ .___________.___________. __  .__   __.   _______      _______.
+    /       ||   ____||           |           ||  | |  \ |  |  /  _____|    /       |
+   |   (----`|  |__   `---|  |----`---|  |----`|  | |   \|  | |  |  __     |   (----`
+    \   \    |   __|      |  |        |  |     |  | |  . `  | |  | |_ |     \   \    
+.----)   |   |  |____     |  |        |  |     |  | |  |\   | |  |__| | .----)   |   
+|_______/    |_______|    |__|        |__|     |__| |__| \__|  \______| |_______/    
+                                                                                    
+*/
+//select english or use german as standard
+//#define ENGLISH
+//########### TFT Color Settings
+#define COLOR_BG  ILI9341_BLACK
+//###########
+#define HOSTNAME "ESP-Hostname"
+#define AP_NAME "ESP_WIFI_AP"
+#define OTA_PW "ota_update"
+#define TZONE "CET-1CEST,M3.5.0/03,M10.5.0/03" //https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv
+/*
+     _______.___________.    ___      .__   __.  _______       ___      .______       _______                   
+    /       |           |   /   \     |  \ |  | |       \     /   \     |   _  \     |       \                  
+   |   (----`---|  |----`  /  ^  \    |   \|  | |  .--.  |   /  ^  \    |  |_)  |    |  .--.  |                 
+    \   \       |  |      /  /_\  \   |  . `  | |  |  |  |  /  /_\  \   |      /     |  |  |  |                 
+.----)   |      |  |     /  _____  \  |  |\   | |  '--'  | /  _____  \  |  |\  \----.|  '--'  |                 
+|_______/       |__|    /__/     \__\ |__| \__| |_______/ /__/     \__\ | _| `._____||_______/                  
+                                                                                                                
+ _______   ______   .__   __.  __.___________.     ______  __    __       ___      .__   __.   _______  _______ 
+|       \ /  __  \  |  \ |  | (_ )           |    /      ||  |  |  |     /   \     |  \ |  |  /  _____||   ____|
+|  .--.  |  |  |  | |   \|  |  |/`---|  |----`   |  ,----'|  |__|  |    /  ^  \    |   \|  | |  |  __  |  |__   
+|  |  |  |  |  |  | |  . `  |        |  |        |  |     |   __   |   /  /_\  \   |  . `  | |  | |_ | |   __|  
+|  '--'  |  `--'  | |  |\   |        |  |        |  `----.|  |  |  |  /  _____  \  |  |\   | |  |__| | |  |____ 
+|_______/ \______/  |__| \__|        |__|         \______||__|  |__| /__/     \__\ |__| \__|  \______| |_______|
+*/                                                                                                               
+/*_______Pin definitions____*/
+#define BEEPER     21       //
+//touchscreen               //
+#define TOUCH_CS   14       //
+#define TOUCH_IRQ  27       //
+//display                   //
+#define TFT_CS      5       //
+#define TFT_DC      4       //
+#define TFT_RST    22       //
+#define TFT_LED    15       //
+#define TFT_MOSI   23       //
+#define TFT_CLK    18       //
+#define TFT_MISO   19       //
+/*______End of definitions__*/
+//define names for fonts
+#define FNT9 &AT_Standard9pt7b
+#define FNT12 &AT_Bold12pt7b
+#define LED_ON 0
+//definitions for text output alignment
+#define ALIGNLEFT 0
+#define ALIGNCENTER 1
+#define ALIGNRIGHT 2
+//########### Global Variables
+uint16_t minutes;                 //current number of minutes since midnight
+uint8_t weekday;                  //current weekday
+struct tm ti;                     //time structure with current time
+boolean connected;                //flag to signal active connection
+uint32_t discon = 0;              //tick-counter value to calculate disconnected time
+uint32_t tick = 0;                //last tick-counter value to trigger timed event
+//########### Variables to hold configuration data
+Preferences pref;
+String ssid = "";                 //ssid for WLAN connection
+String pkey = "";                 //passkey for WLAN connection
+String ntp = "de.pool.ntp.org";   //NTP server url
+
+//instance of display driver
+Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);
+//instance for touchscreen driver
+XPT2046_Touchscreen touch(TOUCH_CS, TOUCH_IRQ);
+//instance to start callbacks on touch events
+TouchEvent tevent(touch);

AZ_TOUCH_BASIC/01_lang.h

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+
+#ifdef ENGLISH/*_____________________ ENGLISH _______________________*/
+  //pref.h
+  #define LANG_loadPreferences "Load Preferences"
+  #define LANG_setPreferences "set pref: ssid= %i password = %i ntp = %i\n"
+  //tft.h
+  #define LANG_setBGLight "percent = %i LED = %i\n"
+  #define LANG_TextInBox "Token %s Length %i total %s Length %i Line %i\n"
+  #define LANG_OnTouchClick "Touch on %i, %i\n"
+  #define LANG_ShowOtaProgress "Progress %i%%"
+  //wlan.h
+  #define LANG_InitWifi "Connect WiFi"
+  #define LANG_WifiDisconnect "WIFI Disconnect"
+  #define LANG_ApDisconnect "AP disconnect"
+  #define LANG_SetWifiMode "Start WIFI Mode"
+  #define LANG_TryConnectWifi "Try to connect WIFI: "
+  #define LANG_WithPassword " with password: "
+  #define LANG_NoConnectionStartAp "No Connection! \nStart Access-Point."
+  #define LANG_ConnectionLost "Connection Lost !!!"
+  //ota.h
+  #define LANG_UpdateSketch "Updating Sketch"
+  #define LANG_Done "Done"
+  //test.h
+  #define LANG_Connected "connected"
+  #define LANG_NotConnected "Not connected"
+  #define LANG_ConnectAp "Please connect to AP SSID:"
+  #define LANG_ApIp "Call this IP:"
+#else /*_____________________ GERMAN _______________________*/
+  //pref.h
+  #define LANG_loadPreferences "Lade Einstellungen"
+  #define LANG_setPreferences "eingestellt: ssid= %i passwort = %i ntp = %i\n"
+  //tft.h  
+  #define LANG_setBGLight "prozent = %i LED = %i\n"
+  #define LANG_TextInBox "Token %s Länge %i gesamt %s Länge %i Linie %i\n"
+  #define LANG_OnTouchClick "Berührung bei %i, %i\n" 
+  #define LANG_ShowOtaProgress "Fortschritt %i%%" 
+  //wlan.h  
+  #define LANG_InitWifi "Verbinde WLAN" 
+  #define LANG_WifiDisconnect "WLAN trennen" 
+  #define LANG_ApDisconnect "AP trennen" 
+  #define LANG_SetWifiMode "Starte WLAN Modus" 
+  #define LANG_TryConnectWifi "Versuche Wlan : "
+  #define LANG_WithPassword " zu verbinden mit diesem Passwort: " 
+  #define LANG_NoConnectionStartAp "Keine Verbindung! \nStarte Access-Point."
+  #define LANG_ConnectionLost "Verbindung verloren !!!"    
+  //ota.h   
+  #define LANG_UpdateSketch "Update Sketch"
+  #define LANG_Done "fertig"
+  //test.h
+  #define LANG_Connected "verbunden"
+  #define LANG_NotConnected "nicht verbunden" 
+  #define LANG_ConnectAp "Bitte verbinde dich mit AP SSID:"
+  #define LANG_ApIp "Rufe dann diese IP auf:"      
+#endif

AZ_TOUCH_BASIC/02_pref.h

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+void pref_GetValues(){
+  Serial.println(LANG_loadPreferences);
+  pref.begin("esp_settings", false);
+  //get values from preferences
+  if (pref.isKey("ssid")) ssid = pref.getString("ssid");
+  if (pref.isKey("pkey")) pkey = pref.getString("pkey");
+  if (pref.isKey("ntp")) ntp = pref.getString("ntp");
+  Serial.printf(LANG_setPreferences,ssid,pkey,ntp); 
+}

AZ_TOUCH_BASIC/03_tft.h

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+//adjust the brightness of the background led
+void tft_setBGLight(uint8_t prct) {
+  uint16_t ledb;
+  ledb = 255*prct/100;
+  if (ledb > 255) ledb = 255;
+  if (ledb <3) ledb = 3; //minimal brightness
+  if (LED_ON == 0) ledb = 255 - ledb;
+  Serial.printf(LANG_setBGLight,prct,ledb);
+  //set the LED
+  analogWrite(TFT_LED, ledb);
+}
+//called from the main loop to handle touch events
+void tft_TouchLoop() {
+    tevent.pollTouchScreen();
+}
+//clear the whole display
+void tft_DisplayClear() {
+  tft.fillScreen(COLOR_BG);
+}
+//encode text from unicode to display code for supplied font
+//src and dst buffer needs to exist
+void tft_encodeUnicode(const char* src, char* dst){
+  uint8_t i = 0, i1 = 0;
+  char c;
+  uint16_t  m = strlen(src);
+  do {
+    c = src[i];
+    if (c==195) { //UTF8 characters german umlauts
+      i++;
+      switch (src[i]) {
+        case 164: c=130; break; //ä
+        case 182: c=131; break; //ö
+        case 188: c=132; break; //ü
+        case 159: c=133; break; //ß
+        case 132: c=127; break; //Ä
+        case 150: c=128; break; //Ö
+        case 156: c=129; break; //Ü
+        default: c=255;
+      }
+    } else if (c == 194) { //UTF8 char for degree symbol
+      i++;
+      if (src[i] == 176) c=134; else c=255;
+    }
+    if (c<135) dst[i1] = c;
+    i++;
+    i1++;
+  } while (i<m);
+  dst[i1] = 0;
+}
+//display a text in a rectangle on position x,y with the size w,h 
+//the text can bbe aligned left, center or right text size can be set to standard or big 
+//font color and background color can be selected as well as the number of lines
+void tft_TextInBox(uint16_t x, uint16_t y, uint16_t w, uint16_t h, const char* text, uint8_t align = ALIGNLEFT, boolean big = false, uint16_t fc = ILI9341_WHITE , uint16_t bg = ILI9341_BLACK, uint8_t lines = 1 ) {
+  char tmp[256];
+  char msg[50];
+  char * token;
+  int16_t xt,yt,h0,x0,sp;
+  uint16_t wt,ht,len;
+  uint8_t l;
+  //first the rectangle will be filled with the background color to erase old content
+  tft.fillRect(x,y,w,h,bg);
+  if (big) tft.setFont(FNT12); else tft.setFont(FNT9);
+  tft.setTextColor(fc);
+  //encoding for german umlauts
+  tft_encodeUnicode(text, tmp);
+  tft.getTextBounds("n",0,100,&xt,&yt,&wt,&ht);
+  sp =wt;
+  //Serial.printf("Space = %i\n",sp);
+  tft.getTextBounds(tmp,0,100,&xt,&yt,&wt,&ht);
+  //Serial.printf("Text %s Länge %i\n",text,wt);
+  h0 = 100 - yt;
+  x0 = x;
+  y = y + h0 +1;
+  if (wt<w) { //enough space in one line
+    if (align == ALIGNCENTER) x0 += (w-wt)/2;
+    if (align == ALIGNRIGHT) x0 += (w-wt);
+    //Serial.printf("x= %i, y= %i, ht= %i, text = %s\n",x0,y,ht,tmp);
+    tft.setCursor(x0, y);
+    tft.print(tmp);
+  } else { //if there is not enough space in one line we adjust the text by word wrap
+    //if only one line is allowed, the text will be cut off on a word boundary
+    l=lines;
+    token = strtok(tmp," ");
+
+    msg[0] = 0;
+    len = 0;
+    while ((token != NULL) && (l>0)) {
+      tft.getTextBounds(token,0,100,&xt,&yt,&wt,&ht); 
+      Serial.printf(LANG_TextInBox,token,wt,msg,len,l);
+      if ((len + wt + sp) < w) {
+        if (len > 0) { strcat(msg," "); len +=sp; }
+        len = len + wt;
+        strcat(msg,token);
+      } else {
+        x0 = x;
+        if (align == ALIGNCENTER) x0 += (w-len)/2;
+        if (align == ALIGNRIGHT) x0 += (w-len);
+        tft.setCursor(x0, y);
+        tft.print(msg);
+        len = wt;
+        strcpy(msg,token);
+        y = y + ht +1;
+        l--;
+      }
+      Serial.println(token);
+      token = strtok(NULL, " ");
+
+    }
+    if ((len > 0) && (l>0)) {
+      x0 = x;
+      if (align == ALIGNCENTER) x0 += (w-len)/2;
+      if (align == ALIGNRIGHT) x0 += (w-len);
+      y = y + h0 +1;
+      tft.setCursor(x0, y);
+       tft.print(msg);
+    }
+  }
+}
+//register a callback for any touch event.
+//we get position and type of the event
+void tft_OnTouchClick(TS_Point p) {
+  char txt[50];
+  sprintf(txt,"Touch on %i, %i\n",p.x,p.y);
+  tft_TextInBox(0,220,320,20,txt,ALIGNLEFT,false,ILI9341_WHITE,COLOR_BG,1);
+  //later on real Project you must select pages or actions here
+}
+
+//show the progress of softwareupdate as a bar and a number
+void tft_ShowOtaProgress(uint32_t prc) {
+  char tmp[20];
+  sprintf(tmp,LANG_ShowOtaProgress,prc); 
+  tft_TextInBox(5, 50, 310, 30, tmp, ALIGNLEFT, true, ILI9341_GREEN, COLOR_BG,1);
+  if (prc == 0) {
+    tft.drawRect(5,80,310,20,ILI9341_BLUE);
+  } else {
+    tft.fillRect(5,80,310 * prc / 100,20,ILI9341_BLUE);
+  }
+}
+//##########################################
+//prepare display
+void tft_SetupDisplay() {
+  pinMode(TFT_LED,OUTPUT);
+  tft_setBGLight(80);
+  tft.begin();
+  tft.fillScreen(COLOR_BG);
+  tft.setRotation(3);
+  tft.setFont(FNT12);
+  touch.begin();
+  tevent.setResolution(tft.width(),tft.height());
+  tevent.setDrawMode(false);
+  //register callback function
+  tevent.registerOnTouchClick(tft_OnTouchClick);
+}

AZ_TOUCH_BASIC/04_wlan.h

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+//connect to the WLAN
+boolean wlan_InitWiFi(String ssid, String pkey) {
+    Serial.println(LANG_InitWifi);
+    boolean connected = false;
+    //first disconnect
+    Serial.print(LANG_WifiDisconnect);
+    WiFi.disconnect();
+    Serial.print(LANG_ApDisconnect);
+    WiFi.softAPdisconnect(true);
+    Serial.print(LANG_SetWifiMode);
+    //satrt station mode
+    WiFi.setHostname(HOSTNAME); //define hostname
+    WiFi.mode(WIFI_STA);
+    Serial.print(LANG_TryConnectWifi);
+    Serial.println(ssid);
+    Serial.print(LANG_WithPassword);
+    Serial.println(pkey);
+    //if we have a config we try to connect
+    if (ssid != "") {   
+      WiFi.begin(ssid.c_str(),pkey.c_str());
+      uint8_t cnt = 0;
+      while ((WiFi.status() != WL_CONNECTED) && (cnt<20)){
+        delay(500);
+        Serial.print(".");
+        cnt++;
+      }
+      Serial.println();
+      if (WiFi.status() == WL_CONNECTED) {
+        Serial.print("IP: ");
+        Serial.println(WiFi.localIP());
+        connected = true;
+      }
+    }
+    //if we have no connection /no config or wrong config)
+    //we start an access point to allow configuration
+    if (!connected) {
+       Serial.println(LANG_NoConnectionStartAp);
+          WiFi.mode(WIFI_AP);
+          WiFi.softAP(AP_NAME,"",1);
+    }
+    return connected;
+}
+
+void wlan_DetectConnectionLost(){
+  //detect a disconnect
+  if (connected && (WiFi.status() != WL_CONNECTED)){
+    connected = false;
+    //remember tick count for automatic retry
+    discon = millis();
+    Serial.printf("==>INFO Variable: connected= %i discon = %i weekday = %i\n",connected,discon,weekday);
+    Serial.println(LANG_ConnectionLost);
+  }  
+}

AZ_TOUCH_BASIC/05_ntp.h

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+void ntp_GetTime(){
+    //setup real time clock
+    configTzTime(TZONE, ntp.c_str());
+    //fill timestarukture ti, minutes and weekday with now
+    getLocalTime(&ti);
+    minutes = ti.tm_hour * 60 + ti.tm_min;
+    weekday = ti.tm_wday; 
+    Serial.printf("==>INFO NTP: %i:%i Day: %i\n",ti.tm_hour,ti.tm_min,ti.tm_wday);
+    Serial.printf("==>INFO Variable: minutes= %i weekday = %i\n",minutes,weekday);
+}