Digital Discovery Write to UART Speed?

[Alejandro-Dev]

Hi, I want to use the DD to put a device under stress by sending UART messages at high speeds. I want to know how fast can it actually send messages using for example the python SDK (but I am open to other options to send messages faster).

I measured the time in python that it takes to send messages and it is between 3 and 4ms, which is too slow for my purposes. Also I made a test using two DDs, one sending UART messages with the python SDK and the other one is receiving the messages. For the receiving one I used Waveforms with the logic analyzer to analyze the signal. Speeds are also between 3 and 4ms so I don't think python was a problem.

Is it possible to program the DD to send messages without the need of calling a python function? Can I load the program in the DD? Would maybe VHDL be the way to go and is this possible with the DD? Or what kind of hardware do I need to achieve this?

[attila]

Hi @Alejandro-Dev

You could use a custom pattern and run it in repeated mode.

 

[Alejandro-Dev]

Thanks, @attila. How would a custom pattern file for UART protocol would look like? Would using a js script be a possibility?