Hello,

Yes the number of D2xx interfaces is limited to 3 on FT900.
There are 7 D2xx interfaces on our FT930 products, but they have no CAN interfaces unfortunately.

So what you need to do is to concatenate some code. We have a few examples in AN_360 FT9xx Example Applications to help you:

D2XX Example 1
D2XX Example UART Bridge
USBD Example CDCACM

The other alternative is to create 4 x CDCACM interfaces and don't use the D2XX interfaces.

Full source code the for examples is provided with the FT9xx Toolchain:

C:\Users\Username\Documents\Bridgetek\FT9xx\2.5.0\Examples

It is possible that other BRT community users have done something similar to help you.

Best Regards,
BRT Community

Hello,

The latest versions of ESD support Unicode fonts for applicable EVE ICs (BT81x), please see page 20 of the User Guide:
EVE Screen Designer 4.10 User Guide

could you let me know what EVE IC you are planning on using in your project?

Best Regards,
BRT Community

Hello,

Thank you for your question.
Would it be possible for you to provide your schematic?

VCCIO2 is the supply concerned with the RGB and touch I/O pins, when supplied with 3V3 you should see 3v3 signals on the applicable pins.

Could you confirm that the RGB pins are driven at 3v3 when the ST7701S is disconnected?

Best Regards,
BRT Community

Hello,

If you wish to control a widget you can use ESD_GLOBAL to create a user variable node. This would be linked to the value parameter of the widget and you can then update the variable from your other code and it will update the widget (e.g. number or gauge pointer).

ESD4.x handles all of the screen refresh etc. in the framework and so it is not possible to just send data over SPI, you would need to pass the values into the ESD code via the ESD_GLOBAL and then ESD will re-draw the screen containing the widgets.

If coding EVE manually, you can implement some optimisations using the macro and append features whereby you can choose to store some static parts on EVE and send the commands for the widgets which change dynamically.

Best Regards, BRT Community   

Hello,

Could you advise which font you added and which steps you used to add your language characters?

Best Regards, BRT Community

Hello,

The development team got back to me regarding this.

In a case where the project has no touch and the user wants to control the UI, I may advise using a global variable to control the UI.  The update loop will monitor the global variable and the user event handler modifies the global variable. 


Best Regards,
BRT Community

Hello,

Thank you for your comments and tips, i'm sure they will be useful to any other customers who happen upon this form post.

I will note that USB performance can be highly variable and is effected by the number and type of USB Peripherals enumerated on the system. The FT4222 also uses USB BULK transfers which are the lowest priority of USB transfers. The USB host controller is responsible for scheduling USB transfers and scheduling algorithms can vary across systems. This may account for some of the performance gains you see when not using the USB hub to connect the FT4222 to the VM816 module.

As for reliability issues, no I do not for see any issues when using the command buffer to stream AVIs to EVE. This was the method used for previous EVE generations (FT81X) and many customers have had good performance using this method.

I will raise your point regarding the Altium libraries to the hardware team. In general we don't release the BOM or layouts for our development modules. But if you have any specific questions concerning components used I can look these up for you.

Best Regards,
BRT Community