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Groups > comp.arch.embedded > #26641
| From | John Speth <johnspeth@yahoo.com> |
|---|---|
| Newsgroups | comp.arch.embedded |
| Subject | Re: Sync to Android frame rate |
| Date | 2017-05-22 09:24 -0700 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <ofv3bk$nk8$1@gioia.aioe.org> (permalink) |
| References | <ofipi2$n4g$1@gioia.aioe.org> <ofkqto$1pv4$1@gioia.aioe.org> <ofnib9$b5m$1@gioia.aioe.org> <kGf*W2ksw@news.chiark.greenend.org.uk> |
On 5/22/2017 3:00 AM, Theo Markettos wrote: > John Speth <johnspeth@yahoo.com> wrote: >> Update: I ran this code on a newer and probably faster phone (Samsung >> Galaxy Grand Prime). It seems to work like I wanted (no aliasing). I >> conclude the original phone (ZTE X752C) was way short of compute capacity. > > If all you're doing is filling the screen with colour and you need to buy a > faster phone, it feels something is wrong. > > For one thing, if that is the intended application (rather than a reduced > test case of some other application) you should be using the GPU to do it > and take basically no CPU time. You're right, Theo. The application is a custom device that mates to a phone display and needs to receive signals, phone to custom device. Communication is one way and contains very little data (a few bytes per message). I think I can signal a photo-transistor in the custom device by switching a region of the screen as the comm channel. I'm weighing the trade-off of going deep and stepping around the Android graphics SW or playing nicely with it. The alternative is a costlier but much more reliable BLE comm. JJS
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Sync to Android frame rate John Speth <johnspeth@yahoo.com> - 2017-05-17 17:23 -0700
Re: Sync to Android frame rate John Speth <johnspeth@yahoo.com> - 2017-05-18 11:59 -0700
Re: Sync to Android frame rate rickman <gnuarm@gmail.com> - 2017-05-18 21:53 -0400
Re: Sync to Android frame rate Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-05-19 18:28 +0100
Re: Sync to Android frame rate rickman <gnuarm@gmail.com> - 2017-05-19 13:47 -0400
Re: Sync to Android frame rate John Speth <johnspeth@yahoo.com> - 2017-05-19 12:47 -0700
Re: Sync to Android frame rate John Speth <johnspeth@yahoo.com> - 2017-05-19 12:51 -0700
Re: Sync to Android frame rate Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-05-22 11:00 +0100
Re: Sync to Android frame rate John Speth <johnspeth@yahoo.com> - 2017-05-22 09:24 -0700
Re: Sync to Android frame rate Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-05-22 22:30 +0100
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