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Topics - FlorianG

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1
Discussion - EVE / Long text on BT 815
« on: April 23, 2024, 02:05:43 AM »
Hi,

do you know if it is possible to display long texts with the BT 815 chip?  I use the Gameduino 3x Dazzler so it is equipped with 8 mega of external RAM.  if I display too much text it crashes because I suppose I am saturating the list of instructions.  List which is too small and remains a big limitation on these chips. 

Ps. my CPU is at teensy 4.0

2
Discussion - EVE / Modularly load ASTC images
« on: September 11, 2023, 09:57:11 PM »
Hi :),
I have a problem with astc images.
I can't put multiple ASTC images one behind the other. Is this normal, and is there a way to fix it?
My goal is to be able to modularly load ASTC images into memory.

3
Discussion - EVE / Problem with my custom BT815 circuit
« on: May 25, 2020, 01:14:06 AM »
Hello,

I made this circuit based on the 815 bt and it does not work,
I do not know if it is a design defect or asenblage but the code works with the VM816C50A and FT811.

Can you tell me if you see errors on my diagrams?
thank you in advance for your help.

4
Discussion - EVE / The Christmas list for BT82X
« on: November 20, 2019, 01:53:34 PM »
Hello everyone,

I propose this new topic in order to give us want / need about the new generation of chip "EVE" which I hope is already in the process of preparation ;)
The current EVE BT81x are good but I'm sure Bridgetek can still boost

For my part I think there is 3 something that the new generation can improve. (In addition to always having more power and why not more features for 3D ;))

The first is the screen resolution. I would say that HD with 1 megapixel on the screen is the priority point.
But in the circumstance that the chips start to be used in time as GPU HDMI as for example with the project of GD3X HDMI of James Bowman the full hd can be very interesent. Maybe even the 4K, let's go crazy  :o  8)

The second is a customizable clock frequency. in this way it would be easier to achieve the best performace of the screen use. And in addition to that overclock the chip to exceed 60 ip / s  8) :o ;D .
I know that it was not all the objective of this chip but for some people (and I think the arduino community that pushes further and further the limits of the material) it can be very very interesent

The last point is about the memory size of the "RAM_CMD" and the "RAM_DL" which are not great in view of the fact that the memory of the bt81x and 4 times larger than the FT801.
Not to mention the fact that we can multiply it again by 256.
The ideal would be at least 64KB instead of 4KB.

Here is my list, if you want to add or discuss some point this topic is made for this  :) ;)

5
Discussion - EVE / BT815 to HDMI or VGA
« on: October 22, 2019, 09:10:22 AM »
Hi everybody,

I will need to pass the image of the BT815 on a HDMI or VGA cable.
is there a solution to this problem?
It should transform the 40pin parallel RGB image to HDMI or VGA.

I heard about the screen drivers but I did not find anything about it.

Thank you in advance for your help.

6
Discussion - EVE / Migrate from ft811 to bt815
« on: August 08, 2019, 10:35:51 AM »
Hello,

I made myself a custom BT815 card and I can not make it work.
I do not know if it's the hardware or the software that does not work properly.

Regarding the hardware I base myself on the ft81x library.
I use the same screen with my ft811 but nothing happens. the slab of the screen is lit in black but nothing else. Backlight does not light.

I have not stopped rereading the Programmers Guide of ft81x and bt81x but I do not see what needs to change to set, start and turn on the screen in white.

Can you confirm that nothing changes for basic setup and parametrage instructions.

thank you very much in advance

7
Discussion - EVE / BT815 in HD
« on: July 23, 2019, 03:43:52 PM »
Hi everybody.

I saw on a PDF available on the site of Bridgetek that there was possibility to make HD (1280 * 800) with the BT815.
https://brtchip.com/Brochures/BT815_6%20Demosheet.pdf
The problem is that he asks to contact them but I have not yet had an answer. So I do not know how that's possible.

Someone could help me on the subject ?

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