Call back function does not change/redraw page?

[cryoguy]

Thanks for the wonderful efforts in creating this library! I got it sort of working with my Arduino Mega. It can compile, upload and display all the sample stetches; and, the touch screen works fine too.

The issue I am having are following (e.g. in GuiMetroGrid): 1. although the initial panel displays without problem, page-switching call back function does not make current page invisiable and target page visible. Press Setting button does not trigger setting page, does give feedback on Serial Monitor that setting button pressed. 2. The buttons in invisible page can be touched and triggered from another page, such as the ->Home button from setting page can be activated from home page.

3. The target page does not refresh/redraw correctly with corresponding callback function. 4. Press Menu 1 generate garbage page.

I will keep playing with it. Any thoughts and advice?

Tony

tech.memoryimprintstudio.com

[ginge]

The only thing that jumps out at me is you don't have the images on your photos. I will run some tests to see what happens if you have missing images. Might be as simple as hitting an error trap somewhere trying to deal with images that don't exist.
Thanks for taking the time to report this

[ginge]

If you haven't already, ignore the above. After reading your report again i'm poking around the wrong example. D'oh.
Any chance you could let me know what screen that is and what mods you made to the lib?

[ginge]

Things to try to rule out memory issues:

1. comment out all GUi buttons apart from Settings
2. Comment out all buttons apart from Menu 1 (this shouldn't do anything other than go grey when pressed)

[ginge]

Okay last note of the day... If the above doesn't work please get latest. I have optimised quite a chunk of code away to reduce stack size.
Tested on my Teensy and Teensy LC (albeit briefly)

[cryoguy]

Thanks for your quick response. The LCD I am using is LGDP4535 documented here, http://ceezblog.info/2015/04/20/240x320-28-tft-shield-driver-4535-for-arduino/ and my blog tech.memoryimprintstudio.com. I will follow your advice and keep you posted later.

Tony

[cryoguy]

If I comment all buttons except Menu 1 or Settings, I only got print output from Serial Monitor. There's no behaivor change of the button upon pressing. It should go grey when pressed? I will take a look at your new code, and keep you posted.

Thanks.

Tony

[cryoguy]

Ok, Here is what happened with your updated code. I can compile and upload GuiMetro example as before without any issue. Most of previous issues remains. Press Setting button does not trigger new page, A few press on Menu1 will trigger a barbage display. -->Home can be pressed from main page. The only differnce I noticed now is that, the -->Home button (never visible though) is capable of bringing back partial display (see image below）. Prior to today's update, there is only one strip in the center.

Any more advice?

Thanks again.

Tony

[cryoguy]

One thing to clarify, the Settings can be triggered by pressing Settings button, but it is just remain invisible. It renders -->Home back touchable. Tony

[cryoguy]

So I guess 3 questions remain. 1. The setting page does not redraw. 2. Mutliple press on Menu 1 will generate a garbage display. 3. Home button triggers a partial display.

[ginge]

I don't know how long you can wait for a fix on this, but it looks like I need to order an arduino mega to work this one out.

Hopefully you can bear with me

[cryoguy]

Hello Barry,

Thank you for your help and your wonderful work. That will be great if you can spend some
efforts to fix your library for Arduio Mega. Your library is truly one
of kind, and it is the simplest and most elegant way to implement menu in my
opinion. Let me know if there is anything else I can try or test.

Best!

Tony

[ginge]

Short: I replicated your setup with no issues noted.
I went out today and purchased an Arduino Mega 2560 R3 and the same screen you have. after changing the pins to suit the Mega, it works without issue.
Can you upload your code, the GFX library and the ILI9341 library with it please so I can check your code as is is

[cryoguy]

Can you pass me the info of the LCD you are using with Mega R3? The one I am using is a cheap LGDP4535 (I can mail you one if you want) and I have to use a modified library to make it work (http://tech.memoryimprintstudio.com/arduino-with-a-lgdp4535-tft-lcd-touch-screen/). I have to use SD library with softSPI for mega in order to access SD card, but does not work with library at the moment. As you can see, I also have to modify your library to make it display ok. Another thing I did is to

use attached zTouchScreen to rotate tft 90 to match LCD coordinate.

Thank you so much for all your efforts. I will email you the code since tar file is not allowed here.

Tony

[cryoguy]

links to my code here:https://drive.google.com/file/d/0B0HMzeWCbUC3OC1wempxcWpIMTQ/view?usp=sharing

[ginge]

thanks for this. I also found ceez blog where you discuss this.
I am actually using ILI9341 devices, not the tft you use.
There does seem to be something strange going on inside of the driver you use, possibly related to screen blanking and redraw methods. I will put together a test ino to see what capabilities are of the tft using only adafruit GFX library.
I have ordered a 4535 based device. I'll be poking around in your code until it arrives