kr, G

No it does not: it only works on the 3-Button M5Stack devices.

Is there a chance to change font (or size) of ez.header ?

Regards, M

GLOBAL INFO
core 0 is the communications processor.
Uses the ESP-NOW protocol
on the 2.4 GHz radio
This process runs as a task created
on core 1
core 1 is the UI processor.
Maintains the M5Stack M5ez LCD menu
Runs Arduino setup() and loop()

*/
Use RTOS semaphores when accessing the global vars to/from the local versions.

uint16_t run_Blynk() {
  Blynk.run();
  return 1;
}

BLYNK_WRITE(V1){
    eventData = param.asString();
}

That did the trick, Blynk connects and stays connected. Now trying to figure out how to display the dynamic data from Blynk on the canvas. If I figure this all out, I'll write a short demo in a new topic for others, as I haven't seen many examples of actual use of M5ez, other than the demo program, but most projects are more than just menus, they have to display something... Again, @rop, excellent work, and thanks again so much!

This needs to be more convenient, I know. addEvent() needs another go-over, better documentation and examples, will put that on the list.

I'm trying to use Blynk to receive events from another board. I have gotten events to show on the M5 in a simple standalone program, so I know it "works". Within M5ez, I believe I just need to call Blynk.run() with the ez.addEvent function, as Blynk.run needs to run often as possible - in most of my projects it's usually the only thing in the main loop, but I'm unsure of how/where to use the ez.addEvent function. There aren't any examples of ez.addEvent in the Demo or any of the other examples included with the library. Any help on syntax and where to put that statement?

Thanks again for your time!!!

I tried to put this line MyTZ.setlocation("Europe/Rome") in my setup() function, but I get an error:
error: 'MyTZ' was not declared in this scope

MyTZ has to be declared first. If you put Timezone MyTZ outside of any functions (in the "global scope") it should work.

More generally: using objects from my libraries works because they are declared in the ezTime.h and M5ez.h files and then implemented in the respective .cpp files. I would stay away from creating your own objects at this point. You don't need them: simple functions within your own sketch would work and are easier to understand. Simply put the header.add in your setup() (after ez.begin()), and point to a regular void function that takes two uint16_t parameters for drawing the widget.

(If you do want to use a class, you'll have to make it static, because otherwise you cannot point to the draw function. But really, just use a regular function.)

@crazyhorse80
Do you also have problems if you lookup the timezone from code (like with MyTZ.setlocation("Europe/Amsterdam")?

I tried to put this line MyTZ.setlocation("Europe/Rome") in my setup() function, but I get an error:

error: 'MyTZ' was not declared in this scope

I also tried to setup TZ in the clock menu at runtime but I can't find the / character on onscreen keyboard...

 
I'm not sure I could do something that would be more informative than the clock code from M5ez.cpp. Let's walk through:

[...]

Hope this helps, otherwise you'll have to tell me what is not working for you, or (better yet) show code that you are trying to make work.

I think I understood how the clock widget works, but I can't replicate it with my own widget code, here it is:
this is on a tab of its own named Widgets:

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
//   B B A N D
//
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

class ezBBand {
  public:
    static void begin();
    static void restart();
    static void menu();
    static uint16_t loop();
    static void clear();
    static void draw(uint16_t x, uint16_t w);
  private:
    static void _writePrefs();
    static bool _on;
    static bool _starting;
};

  bool ezBBand::_on;
  bool ezBBand::_starting = true;

  void ezBBand::begin() {
    Preferences prefs;
    prefs.begin("M5ez", true);  // read-only
    _on = prefs.getBool("BBand_on", true);
    prefs.end();
    ez.settings.menuObj.addItem("BBand settings", ezBBand.menu);
    ez.addEvent(ezBBand.loop);
    ezBBand.restart();
  }
  
  void ezBBand::restart() {
    ez.header.remove("BBand");
    uint8_t length;
    if (_on) {
      length = 2;
      ez.setFont(ez.theme->clock_font);
      uint8_t width = length * m5.lcd.textWidth("F") + ez.theme->header_hmargin * 2;
      ez.header.insert(ez.header.position("title") + 2, "BBand", width, ezBBand.draw);
    }
  }
  
  void ezBBand::menu() {
    bool on_orig = _on;
    while(true) {
      ezMenu bbandmenu("BBand settings");
      bbandmenu.txtSmall();
      bbandmenu.buttons("up#Back#select##down#");
      bbandmenu.addItem("on|Display BBand\t" + (String)(_on ? "on" : "off"));
      if (_on) {
      }
      switch (bbandmenu.runOnce()) {
        case 1:
          _on = !_on;
          ezBBand.restart();
          break;
        case 0:
          if (_on != on_orig) {
            _writePrefs();
          }
          return;
      }
    }
  }
  
  uint16_t ezBBand::loop() {
    ezt::events();
    if (_starting && timeStatus() != timeNotSet) {
      _starting = false;
      ez.header.draw("BBand");
    } else {
      if (_on && ezt::minuteChanged()) ez.header.draw("BBand");
    }
    return 250;
  }
  
  void ezBBand::draw(uint16_t x, uint16_t w) {
    if (_starting) return;
    m5.lcd.fillRect(x, 0, w, ez.theme->header_height, ez.theme->header_bgcolor);
    ez.setFont(ez.theme->clock_font);
    m5.lcd.setTextColor(ez.theme->header_fgcolor);
    m5.lcd.setTextDatum(TL_DATUM);
    m5.lcd.drawString("Fx", x + ez.theme->header_hmargin, ez.theme->header_tmargin + 2);
  }
  
  void ezBBand::_writePrefs() {
    Preferences prefs;
    prefs.begin("M5ez");
    prefs.putBool("BBand_on", _on);
    prefs.end();
  }

It should display the string Fx between WiFi and clock widgets (I'll modify that to display a string from a variable if I get it to work).
In my main tab (M5remDisplay) I put this:
ezBBand BBand; as a global variable declaration and BBand.begin(); in my setup() function.

This is a list of errors I got:

M5remDisplay:16:1: error: 'ezBBand' does not name a type

 ezBBand BBand;

 ^

C:\Users\Utente\AppData\Local\Temp\arduino_modified_sketch_422641\M5remDisplay.ino: In function 'void setup()':

M5remDisplay:58:3: error: 'BBand' was not declared in this scope

   BBand.begin();

   ^

Z:\_PVControl\M5remDisplay\Widgets.ino: In static member function 'static void ezBBand::begin()':

Widgets:30:58: error: expected primary-expression before '.' token

     ez.settings.menuObj.addItem("BBand settings", ezBBand.menu);

                                                          ^

Widgets:31:24: error: expected primary-expression before '.' token

     ez.addEvent(ezBBand.loop);

                        ^

Widgets:32:12: error: expected unqualified-id before '.' token

     ezBBand.restart();

            ^

Z:\_PVControl\M5remDisplay\Widgets.ino: In static member function 'static void ezBBand::restart()':

Widgets:42:80: error: expected primary-expression before '.' token

       ez.header.insert(ez.header.position("title") + 2, "BBand", width, ezBBand.draw);

                                                                                ^

Z:\_PVControl\M5remDisplay\Widgets.ino: In static member function 'static void ezBBand::menu()':

Widgets:58:18: error: expected unqualified-id before '.' token

           ezBBand.restart();

                  ^

Thank you for helping me and having so much patience...

I have some problem with Geo-IP timezone auto-select, it always timeouts and it's only executed once: could you, please, modify this function to retry if timeout occurs?

Do you also have problems if you lookup the timezone from code (like with MyTZ.setlocation("Europe/Amsterdam")? Retries (and periodic refreshes) of timezone data are planned.

Could you make the actual header to be a "system" header (with title, WiFi and clock widgets) and add a "user" header so the user could put more widgets in it? I ask for this one 'cause I'm planning an app that will require to display few widgets and I have no pixels to show them all. (In case you're not planning to do that, I'll simply add my code to be displayed in the canvas space with a function of my own).

You could remove the header widgets and create new ones if you want to use the existing space on the display. Or you can write your own code to create your own header on the canvas either in place of or below the existing header. I do not plan to include a second header line.

And now a more personal request: could you please make a dummy widget complete with all the code to associate a settings menu (with enable / disable widget setting) and the draw code. It'll be perfect if it will simply display a variable value and update every time the minute changes. I've tried to modify the clock widget but I didn't have success with that.

I'm not sure I could do something that would be more informative than the clock code from M5ez.cpp. Let's walk through:

• If the clock is set to be displayed, ezClock::restart() calculates the width of the widget (clock uses a fixed-width font) and does:

ez.header.insert(RIGHTMOST, "clock", width, ez.clock.draw);

• The draw routine that this points to simply clears the area and draws the text. Note that this gets x-position and width from the header code :

void ezClock::draw(uint16_t x, uint16_t w) {
	if (_starting) return;
	m5.lcd.fillRect(x, 0, w, ez.theme->header_height, ez.theme->header_bgcolor);
	ez.setFont(ez.theme->clock_font);
	m5.lcd.setTextColor(ez.theme->header_fgcolor);
	m5.lcd.setTextDatum(TL_DATUM);
	m5.lcd.drawString(tz.dateTime(_datetime), x + ez.theme->header_hmargin, ez.theme->header_tmargin + 2);
}

• This redraw routine is automatically called by the header code every time the header is redrawn and additionally every minute — from ezClock::loop() — which simply says:

if (_on && ezt::minuteChanged()) ez.header.draw("clock");

• The clock header item can be removed with

ez.header.remove("clock");`

Hope this helps, otherwise you'll have to tell me what is not working for you, or (better yet) show code that you are trying to make work.

• I have some problem with Geo-IP timezone auto-select, it always timeouts and it's only executed once: could you, please, modify this function to retry if timeout occurs?

• Could you make the actual header to be a "system" header (with title, WiFi and clock widgets) and add a "user" header so the user could put more widgets in it? I ask for this one 'cause I'm planning an app that will require to display few widgets and I have no pixels to show them all. (In case you're not planning to do that, I'll simply add my code to be displayed in the canvas space with a function of my own).

• And now a more personal request: could you please make a dummy widget complete with all the code to associate a settings menu (with enable / disable widget setting) and the draw code. It'll be perfect if it will simply display a variable value and update every time the minute changes. I've tried to modify the clock widget but I didn't have success with that.

Thank you in advance!

@rop
That should be
ez.wifi.indexForSSID("your-ssid")
;)

Whoops, so right... Fixed.

Can I ask if someone has already integrated a simple web server with your software? Could you point me to some easy example? Thank you!
Basically I have an Arduino board sending GET requests to my M5Stack address and I need to decode the GET string and display some variable value on screen every time I got a new connection.

I haven't done this, but the new ez.addEvent feature (manual) allows you to put any code you want in the idle loop of M5ez. For example, if you were to use the WebServer library from Espressif, you would create a function that runs as part of the M5ez main loop, and from it call that library's server.handleClient() (you can't do that directly because the M5ez event functions must return a uint16_t number to indicate after how many ms they would like to be ran again.)

Can I ask if someone has already integrated a simple web server with your software? Could you point me to some easy example? Thank you!
Basically I have an Arduino board sending GET requests to my M5Stack address and I need to decode the GET string and display some variable value on screen every time I got a new connection.