Author Topic: Syntherrupter - A Feature-rich, Polyphonic Interrupter  (Read 9721 times)

Offline Mads Barnkob

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Re: Syntherrupter - A Feature-rich, Polyphonic Interrupter
« Reply #120 on: November 17, 2020, 08:43:47 PM »
@Mads: Urks - more bad news... Do you know by chance whether lvgl is a viable alternative?

I did not know about that one, so I got nothing to say about that :)

Since I have currently no new features that I'm working on, I made a very small update that fixes a bug introduced with the last release. Details as always in the notes. https://github.com/MMMZZZZ/Syntherrupter/releases/tag/v4.1.0-beta.7
TBH I hadn't much time for extensive testing. So there may still be other MIDI bugs. Let me know if you find any!

Kind regards,
Max

I ran upon that in simple mode, with standard settings of 200us, 1000Hz and 10% dc limit, I can play with the us/Hz sliders in a way so that dc says 10% on the display, but only 7.3% on the oscilloscope measuring the output. I am not sure if this has to do with the settings for minimum off time?

This does however only seem to happen if changes are done fast, properly too fast for TIVA and Nextion to communicate properly?
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Offline Max

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Re: Syntherrupter - A Feature-rich, Polyphonic Interrupter
« Reply #121 on: November 17, 2020, 10:50:21 PM »
Interesting issue. I have not been able to reproduce this on my own. I should probably say that I didn‘t verify he output signal with a scope. I looked at the data with the debugger - at core level (see my graphic above). Highly unlikely that those values don‘t match what‘s actually on the ouput.
Even when I move the slider very fast for a couple seconds, everything is fine; the tones send to the core match the values on the screen. For 1 coil as well as for 6 coils.
There‘s one crucial difference between your setup and mine: your Nextion display has a 200MHz CPU, mine has a 48MHz CPU. Yours likely fires those serial commands much faster than mine - possibly too fast as you suspected. To test this hypothesis I attached a modified Tiva firmware with a bigger receive buffer size.

While testing this I noticed another bug related to dark mode. Actually not a bug of mine but one of Nextion. When switching to dark mode, hiding components doesn‘t work anymore because it always overdraws the component with the original background color - white. So I have to manually draw a rectangle in the correct color every time I hide a component... Even this is only half of the problem; the flickering remains, because Nextion draws a white rectangle before I can overdraw it with the righ color. I have to check whether I‘ll find a workaround for this, too.

Finally, while I investigated Nextions issues I found a couple minor oopsies of mine, too. The QR code was supposed to have a lighter color in dark mode for better contrast and the position of the Manual/Apply buttons in Lightsaber mode didn‘t match the positions in the other two modes. Both things are now fixed and will be available soon.

Edit: Attachment fixed. somehow it shrunk to 0kb during the upload..


Kind regards,
Max
« Last Edit: November 18, 2020, 11:58:19 PM by Max »

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Re: Syntherrupter - A Feature-rich, Polyphonic Interrupter
« Reply #121 on: November 17, 2020, 10:50:21 PM »

 


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