Touchgfx change complete screen during run time and customized widget creation

[Chandan Bhatia1]

Hello, I and using Touchgfx in my project. I want to implement below.

1) During run time , I want to to turn off complete screen.

2) During run time , I want to change complete screen.

3) I want to generate QR code dynamically and also want to clear it sometimes during run time. I got github link and added those files in my project. Still I am not sure how to call it. You have mentioned to call qrCode.setXY(0,0) , qrCode.setQRCode(&code), qrCode.setScale(4) , add(qrCode) methods but I am unable to find it.

Can any one please help ?

[Martin KJELDSEN]

16-bit applications can interpret ARGB8888 images in touchgfx, so go ahead.

/Martin

[Chandan Bhatia1]

Sorry i didn't get u, can u please explain, For black I m sending 0x00000 and white 0xffff. How exactly touchgfx will get it ARGB888.

[Chandan Bhatia1]

@Martin KJELDSEN​  did u get the chance to check ?

[Martin KJELDSEN]

I'm talking about images. ARGB8888 images can be understood by a 16-bit TouchGFX application using dithering algorithms. You decide the formats you want your assets to be in in your application configuration for opaque and non-opaque images. Default for 1-bit applications is RGB565 and ARGB8888

[Chandan Bhatia1]

Can you help me with step like how should i do it ?

I have created arrays of 0 and 1s based on my image. Currently for 1, I am sending BLACK_COLOR_PIXEL 0x0000 and for 0 , I m sending WHITE_COLOR_PIXEL 0xffff. I am kinda new in understanding image related stuff so please explains in steps to implement.

[Martin KJELDSEN]

Just create an image in paint.net or similar that has alpha in the places you need it to, and add it using an Image in Touchgfx designer. TouchGFX will render it for you with transparancy. No need to do what you're doing.

/Martin

[Chandan Bhatia1]

Thanks dude. Also please answer for below.

[Chandan Bhatia1]

@Martin KJELDSEN​  did u get the chance to check ? Its last blocking, Post display related query is over.

[Martin KJELDSEN]

If you want TouchGFX to stop rendering while the display is off, you can turn off the VSYNC interrupt. But i really have NO clue what your intentions are so it's difficult to help you. Is your intention low power mode? Just display off? What? =)

Before you post questions, please think about why you're posting them and share all the necessary details of your project. The reason for doing something is important. If you're in a hurry, it will take a lot more time for me to try to get all the information - back and forth.

/Martin

[SC9]

Hi @Martin KJELDSEN & @Chandan Bhatia1  

Please share solution for Question no 2: I am working on similar problem. I have generated QR Code from URL successfully on board but want to chnge QRCode during run time. For that I am sending string(URL) via UART.

Re: Share your Custom Widgets! - Page 2 - STMicroelectronics Community - STMicroelectronics Community- I have tried solution from here