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Topics - Jonathan

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Discussion - EVE / Can BT815 determine the Touch-Controller Type by itself?

« on: January 03, 2024, 09:59:11 AM »

Hi,

I have a project where some displays are with goodix touch controller and some are with FocalTech touch controller.
Is it possible that the BT815 figures out which controller is used by itself?

Best
Jonathan

Discussion - EVE / Scale down the Spinner Widget

« on: July 13, 2023, 08:32:24 AM »

Hi,

is there a way to make the spinner widget smaller than the widget allows?

Code: [Select]

CMD_SPINNER(204, 283, 0, 0) in this command 0 is the smallest value for the scale, but I want it to be even smaller. Is there a way to do this or do I have to build my own spinner?

Best
Jonathan

Discussion - EVE / Porting ESD to esp32-s3

« on: March 02, 2023, 10:48:32 AM »

Hey,

I am wokring with an BT815 and want to port the code generated from the ESD to esp32-s3 (at least I want to try). I have studied the AN_73 (porting guide for stm32) and think I got a rough overview how the porting could work with esp32-s3.
Hay anyone done this already?

Best
Jonathan

Discussion - EVE / BT815 - Wake-Up via interrupt

« on: April 10, 2022, 07:43:47 PM »

Hello,

I have a question about the possibilities of the interrupt pin. I want that any touch event triggers the interrupt. Especially when the display is in power-down state. From the docs I get, that in power-down state my wanted behaviour should be default. But nothing happens, I get no interrupts at all. Where do I have to set up the interrupt in the eve3-code? (I am using Rudolphs library)
Also I test the ISR from my MCU with a random button as interrupt source and this part works just fine. When I power up the display and do the init process I also get 2 interrupts, why? I can not find the source for them...

Best,
Jonathan

Discussion - MCU / BT815 RGB-to-MIPI Converter and alternatives

« on: March 22, 2022, 03:22:32 PM »

Hey,

I am developing a small system which includes an 5 inch display with 800x480 resolution and based on a BT815. So my setup looks something like that:
MCU <-> BT815 <-> Display/Touchscreen
Now I am thinking about bigger displays with higher resolutions. So one way is to get an BT817, which can handle these resolutions. But would it also be possible to get an RGB-to-MIPI bridge an control higher resolutions? If yes, this would be a valid way to control for example 1080p displays with an BT815 which would be great.

On the other hand I am wondering how other MCUs are working like the stm32 ones. There are controllers, which have a MIPI interface directly. But I can not find display-controllers like the BT815 with MIPI interface and also no ready-to-use modules. Why is that so? Is it more common for tablets and stuff to have just a big MCU which can handle high resolution displays and not to split it up into a smaller MCU and a separate graphics controller?

Best
Jonathan