While the eve offers no function to quickly get the size of a string, you can download the rom font header from the unit and calculate this your self, in AN_033 - BT81X programming guide see sections:

5.4.1 (Legacy Font Metrics Block) and
5.4.2 (Example to find the width of character)

do note ...

The eve doesn't allow partial updates like that, if you want to update a section of the screen you'll have to send a complete new display list

Most likely culprit is the ftdi driver not being loaded, has `uftdi_load="YES"` been added to `/boot/loader.conf` ?

if that's not the case, what's the reported `idVendor` and `idProduct` for the device when running `usbconfig dump_device_desc` ?

In short, the setup code is like this:

wr32(REG_INT_MASK, 0x00000002);
wr32(REG_INT_EN, 0x00000001);

Does it seem to be right?


depends a bit on the value you have for REG_INT_MASK, if you use our sample code we define it as 0xb0 which means you'd have to use RAM_REG + REG_INT_MASK to get its ...

We don't have any example code available for it, but the CMD_SNAPSHOT and CMD_SNAPSHOT2 commands from the Eve Programming Guide will be useful for this use case.

Found some time to test on Linux, the following udev rules will allow regular users to use the htt utility

SUBSYSTEM=="usb", ATTRS{idVendor}=="1b3d", ATTRS{idProduct}=="14c9", MODE="0666"
KERNEL=="hidraw*", ATTRS{busnum}=="1", ATTRS{idVendor}=="1b3d", ATTRS{idProduct}=="14c9", MODE="0666"

Likely a permission issue imposed by the OS, can you try with sudo ?

If that works you'll have to add a udev rule to give users permissions to touch the device :

ATTR{idVendor}=="1b3d", ATTR{idProduct}=="14c9", TAG+="uaccess"

will likely do it, but i don't have system to test this on at the ...

The format is a little different, it requires a specific block order, you can find some details and a conversion script on the bridgetek forums over at

http://www.brtcommunity.com/index.php?t ... 108#msg108

you can find the definition for line width over here

https://github.com/MatrixOrbital/EVE2-L ... 81x.h#L365

It's included in the sample applications over at [1] since the download link somewhat gets lost in that page i'll link the current version as of today directly [2]

[1] https://brtchip.com/SoftwareExamples-eve
[2] https://brtchip.com/wp-content/uploads/ ... .2-rc3.zip

Bridgetek has an emulator available, you can find details in appnote AN-281 [1]

[1] https://brtchip.com/wp-content/uploads/ ... _Guide.pdf

The Eve Assetbuilder is available on bridgeteks website [1] it can be used to convert and upload images to the module over USB when used in combination with our USB bridge [2] but it also offers the option of writing them to disk in various formats for further use.

as for the widgets, there are ...

I'm sorry to report there are currently no plans for a source release.

I can't easily tell what your code is doing or what the debug output means, best i can do is refer you to our manual calibration example code available here

Regardless of the touch calibration matrix, the output of the `REG_TOUCH_RZ` register should be in between 0 and 32767.

if you go by the letter of the data sheet you should and it with 0x7fff but I admit I've never seen bits 16-31 being anything other than 0

the fact that you are reading values ...