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Messages - BRT Community

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16
Hi,

We will test out and investigate this also and keep you updated, thanks for your additional test results Rudolph,

Best Regards, BRT Community

17
Discussion - EVE / Re: Help to choose Backlight LED driver
« on: March 11, 2024, 02:56:55 PM »
Hello,

Thank you for your question.

We utilise the following LED backlight drivers on our development modules, maybe these would be suitable for your application:
IS31BL3506A
IS31BL3506B

Best Regards,
BRT Community

18
Discussion - EVE / Re: Screen updates
« on: March 11, 2024, 11:18:00 AM »
Hello,

Yes, the append technique in AN_340 is one of the best ways to do this,

Which EVE device do you use? The BT817/8 also have a more advanced version of this where you can store sections of command list (as well as section of display list) and this can make it even easier

However, the Append can be used on all EVE devices in any case if you use other models apart from BT817/8.

We also have an example of the same technique as AN_340 where we draw the chart line and the numerical values here using append whilst the other static items are stored:
https://brtchip.com/wp-content/uploads/Support/Documentation/Application_Notes/Modules/EVE/AN_356-FT800-Interfacing-I2C-Sensor-to-VM800P.pdf

Best Regards, BRT Community

19
Hi,
Yes, unlike the compressed png/jpg formats, the compressed file for an inflate could have different types of content and so there will not be standard image data in all cases. As Rudolph mentioned, since you will create the file in most cases, you can include our own header containing the details before compressing, and then when using it in EVE, you can parse that after inflating it (and then exclude that header data when you display the resulting raw image in EVE).

Best Regards, BRT Community

20
Discussion - EVE / Re: Rotating images, and CMD_TEXT not showing
« on: February 29, 2024, 02:41:01 PM »
Hello,

Regarding the issue with your text, your matrix will be getting applied to the following items too and so one suggestion is to revert the matrix to the identity matrix again via
CMD_LOADIDENTITY
CMD_SETMATRIX
before you proceed to draw the other items such as text which you do not want to be rotated,

Best Regards, BRT Community

21
Hello,

Thank you for the clarifications, I think in the case that both the older version of the same display and the fact that rerunning the calibration routine results in the display working as expected means we can rule out an issue with the I2C data coming from the touch controller. And similarly it would rule out a hardware issue such as the CTP connector being misaligned.

I would be interested to know if the saved matrix values that you are noting are captured before you write them into the EERPOM or afterwards? This, as you have noted, may be related to an overflow issue or potentially an endianness issue.

Best Regards,
BRT Community

22
Hello,

Thank you for your post.

I note you mention an older screen does not present this issue, are both of these screens the same RVT101HVBNWC00-B model?

On the occasion of the issue occurring does a re-run of the calibration routine result in accurate matrix values, or for example do you need to power cycle the board?

Have you noted any issues around the CTP connector to the displays main PCB?

Best Regards,
BRT Community

23
Discussion - EVE / Re: LVGL and FT813!
« on: February 09, 2024, 08:55:59 AM »
Hi,
Yes, nice work and a very interesting project, thanks for sharing and let us know how it is going as you add the new features,
Best Regards,
BRT Community

24
Discussion - EVE / Re: Flash Blob for BT815 vs BT817
« on: February 08, 2024, 04:51:14 PM »
Hi David,

We're just checking with our R&D team and will let you know as soon as possible,

Best Regards, BRT Community

25
Discussion - EVE / Re: ARROR: display list overblow in cmd_pext()
« on: February 08, 2024, 04:43:39 PM »
Hi,

We'll need to check about that error but yes, the RUNANIM command will block and so could cause a display list not to be shown after the command.

Doing the animation frame by frame is worth trying,

Best Regards, BRT Community

26
Discussion - EVE / Re: Running animation stops DL's from running.
« on: February 08, 2024, 12:01:17 PM »
Hi,

We suggest to use CMD_ANIMFRAMERAM in this case as the CMD_RUNANIM is a blocking call.

In this case you will need to increment the frame number parameter in your code however rather than it running automatically. Just to relate to your other post also, since you can control the advancing of the frame, you could convert an animation with fewer frames (avoiding the repeated ones so you can have 2 instead of 100).

CMD_ANIMFRAMERAM(x, y, startaddr, frame)

Best Regards, BRT Community 

27
Hi,

One reason can be where the animation itself is slower than the EVE frame rate, as the animation has many frames which are the same.

How long is one full cycle of your animation?

Best Regards, BRT Community

 

28
Discussion - EVE / Re: Winbond W25Q01JV write problems
« on: February 06, 2024, 04:11:32 PM »
Hi David,

We will discuss with our hardware team to check,
Does your flash have other functions multiplexed onto the same IO pins such as HOLD and RESET?
Could you also advise if you have resistors pulling up certain flash pins etc.

Best Regards, BRT Community

29
Discussion - EVE / Re: UMFT4222EV with VM816C50A
« on: February 06, 2024, 11:33:35 AM »
Hello,

Could I clarify which version of EVE Asset Builder you care currently utilising?

Just as a note, if a erase does succeed the blob would need re-programmed into the flash IC before it can be detected. It may be that an erase has completed and the subsequent write has failed leading to he blob note being present.

Best Regards,
BRT Community

30
Discussion - EVE / Re: UMFT4222EV with VM816C50A
« on: February 05, 2024, 04:10:15 PM »
Hello,

Hello, I was wondering if you could share your wiring connections.  I'm struggling to get the UMFT4222EV to connect to a Riverdi BT817Q.  My connections are as follows:

UMFT4222EV     ->     BT817Q
JP5.9                ->     SCLK
JP5.8                ->     MISO
JP5.7                ->     MOSI
JP5.5                ->     IO.2
JP5.4                ->     IO.3

JP4.11              ->     -----     10k Resistor -> +3V3
JP4.9                ->     CS        4.7k Resistor -> +3V3
JP4.6                ->     INT
JP4.4                ->     RST/PD

When in EAB and I try to Detect, I mostly get the following:

Detecting flash...
Found device: FT4222 A (A)
Host: FT4222

Flash size: 64 MBytes

Blob is NOT present.

Flash can switch to full speed.
END

Detection fail!

Occasionally, I get this:

Detecting flash...
Found device: FT4222 A (A)
Host: FT4222

Flash size: 64 MBytes

Blob is NOT present.

Flash can switch to full speed.
END

BEGIN
Measure reading speed...

Reading speed: 17.88 MB/s
Reading 10 MBytes in 0.56 seconds
END

In either case, it never finds the blob.  I know the blob is present because I can program it perfectly fine with an FT232H.

Is something connected incorrectly?  I've been trying to use the ME817EV schematic to try and match things up, which I think I have (using the pin mapping above).

Any insight would be greatly appreciated.

Kindest regards.

Your ping assignments look correct for the connection from the FT4222 to the BT817.

EVE Asset Builder reporting on occasion that it can detect the flash indicates that your connections are correct but there may be a signal integrity issue.
Are you using long jumper wires to connect your FT4222 to the BT817 board?

Best Regards,
BRT Community

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