BRT Community

Hello,

I just found this:
https://brtchip.com/wp-content/uploads/2025/08/BRT_AN_095_BT82X-Firmware-Update-and-Extension-Guide.pdf

Nice, I was expecting something like this.

But the referenced patches are not available yet as an not yet released EVE Asset Builder is supposed to provide these in a new EXTENSION tab.
Please attach a full .bin here in the meantime for testing, the base patches and all extension patches in one binary.
Or, if that needs to be handled separately for some reason, the mentioned base_patch.bin plus a binary with all extension modules.

I would just drop that on the SD card for the BT820.

Hello,

No bother at all, thank you for sharing your solution.

Best Regards, BRT Community

Hello, thank you for your response.

Well don't I feel like an idiot .  I tried using the Windows Anton font to make sure it wasn't something with the font I changed and that's when I saw it.  I'm setting the font to, 13 but I then use a system font, 31.

TFT_qspi_dl_cmd(COLOR_RGB(0, 25, 0));
TFT_qspi_cmd_setfont2(13, MEM_FONT_ANTON_34, 0);

char buf[32];
snprintf(buf, sizeof buf, "%.1f Psi", pressure);
TFT_qspi_cmd_text(75, 60, 13, EVE_OPT_CENTERY, buf);
When I set the correct font to use, 13, the whole display crashes.  I'll have to verify that my set font code is correct cause it doesn't seem to be working, ugh.

Apologies for wasting your time.

Kindest regards.

Hello,

Could we check which model of EVE chip you are using with your font?

Also, which EAB conversion settings and which application SetFont2 code were you using to set up your font?

Best Regards, BRT Community

Hello,

I modified a font, Reglo-Bold, adding a "degree" symbol but I'm unable to actually display it.  For some reason, depending on how I try to display it, it'll show up as a '0'.  I'm confident the symbol is there and in the correct position.  I viewed the images created by EVE Asset Builder v2.10.2 and it's there.

FontFolio Screenshot
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EVE Asset Builder Preview Last Screenshot
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EVE Asset Builder Font Index HTML Screenshot
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I've tried a bunch of different ways to display it:

snprintf(buf, sizeof buf, "%d " "\u00B0" "   F", temperature);
TFT_qspi_cmd_text(75, 120, 31, EVE_OPT_CENTERY, buf);

I'm not really sure what I'm doing wrong or maybe something like this isn't possible?

Any insight would be greatly appreciated.

Kindest regards.

Ok, this could answer to this topic: http://www.brtcommunity.com/index.php?topic=428.msg2117#msg2117

I've seen that issue is resolved in new version of ESD in Esd_Render function.

Thanks, so it was the "Display list instruction overfetch".
I even already had BRT_TN_005_BT81x_Errata_Technical_Note.pdf.

I just was not looking under https://brtchip.com/document/technical-notes/ , maybe add (Errata) to that one as well?

Oh, and another small thing, "Programming and User Guides" is sorted by date, newest on top, could that perhaps be done on "IC Data Sheets" and "Application Notes" as well?

Hello,

Details of the Errata can be found in the following Technical notes:

BRT_TN_005_BT81x_Errata_Technical_Note

BRT_TN_006_BT88x_Errata_Technical_Note

best Regards

BRT Community Admin

This seems important... so I am boosting this post.