stevestrong wrote: ↑
Tue Jul 25, 2017 9:39 am
So actually the ~3 ms is the time just to write the data to the Tx buffer.
Ok, the 8ms is the realistic time for filling the 300x300box..
That is not bad provided most of potential users may use the Tek emulator for a visualization of their measurements done with their ..duinos in a form of simple 2D graphs/charts, with the option of having easy copy/paste/saving/printing of their graphs. And without a need to mess with windows programming.
I did not test with Xterm, but sources claim it works as well..
PS: while I messed with the spectrum analyzer POC above, the lesson learned is following: the data acquisition - sampling the ADC data - takes much longer than the processing and plotting them in Tek window. For example with 100kHz sampling rate, you need 10msecs to get 1024 samples in, you need to average the spectra in order to get some nice results, I did with 64 spectra, thus the total time for data sampling was 640ms. The actual fft processing of 64 spectra takes maybe 100 msecs in total (fpu on). So the refresh rate of the spectra on the Tek screen was below 1sec. The plotting the data took maybe 15msecs.