Thanks, I'll check that out! On Friday, April 9, 2021 at 11:19:47 AM UTC-4 pierric...@gadz.org wrote:
> Hi, > I believe there are some simple ADC-read example directly in the image > under /var/lib/cloud9/Techlab/.challenges, or here: > https://github.com/beagleboard/cloud9-examples/blob/master/PocketBeagle/TechLab/.challenges/analogIn.pru0.c > They are labeled for PocketBeagle but it's the same ti-am335x chip so they > should work easily on the BBB. > Hope it helps! > Pierrick > > Le vendredi 9 avril 2021 à 10:57:32 UTC-4, wal...@edenconceptsllc.com a > écrit : > >> Understood. Our application won't require FAA or FDA approval but it >> definitely needs the more deterministic performance of a bare bones app so >> I'm heading in the direction of the ADC being read by a PRU program and >> communicating back to the ARM for other processes (UI, reading other >> non-time-sensitive inputs, etc.). >> >> On Friday, April 9, 2021 at 10:23:26 AM UTC-4 lazarman wrote: >> >>> 1) >>> *Linux* is not a real-time operating system (OS) in and of itself. ... >>> “The idea is to run critical applications like the control loop on VxWorks >>> and then run non-*deterministic* analytics on *Linux*. >>> >>> Hard realtime apps like closed loop positioning used in pressing >>> plants,automation,fighter planes etc etc don't use Linux. Determinism >>> required by safety critical systems certified by FAA would require you >>> found delay measured it to calculate worst case as well as validated >>> software. >>> >>> >>> https://www.automationworld.com/products/control/blog/13318614/clarifying-the-linux-real-time-issue#:~:text=Linux%20is%20not%20a%20real,OS)%20in%20and%20of%20itself.&text=%E2%80%9CThe%20idea%20is%20to%20run,non%2Ddeterministic%20analytics%20on%20Linux. >>> >>> >>> >>> What makes the Linux scheduler seem unpredictable? >>> <https://unix.stackexchange.com/questions/65969/what-makes-the-linux-scheduler-seem-unpredictable> >>> What makes the Linux scheduler seem unpredictable? >>> >>> The question refers to the output of a multi-threaded application, where >>> each thread merely prints its ID (user assigned number) on the standard >>> output. Here all threads have equal priority and com... >>> >>> <https://unix.stackexchange.com/questions/65969/what-makes-the-linux-scheduler-seem-unpredictable> >>> >>> >>> >>> 2) I say no depends on how much delay is acceptable there are buses >>> between shared memory etc it will improve over using ARM. >>> >>> Ideal situation is a barebone app designed with minimal interrupt >>> latency followed by an RTOS that's guaranteed to meet latency specs >>> especially one certified by FAA or FDA of course these are expensive >>> >>> >>> >>> >>> Sent from Yahoo Mail on Android >>> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature> >>> >>> On Fri, Apr 9, 2021 at 8:23 AM, TJF >>> <jeli.f...@gmail.com> wrote: >>> >>> >>> wal...@edenconceptsllc.com schrieb am Freitag, 9. April 2021 um >>> 14:41:00 UTC+2: >>> >>> I'm looking at some example code and there references to ADC_TSC. I >>> realize this is a reference to the Touchscreen controller which provides >>> the ADC functionality. And I suspect this refers to the base memory >>> address of the chip but I cannot find where that is defined in any header >>> files anywhere. It would help me to follow these examples if I knew where >>> that reference was. >>> >>> >>> Find high-level code (FreeBASIC) in files src/pruio/pruio_adc.[bas|bi] >>> and low level code (assembler) in file src/pruio/pruio_adc.p. >>> >>> >>> Unfortunately, too, the examples are Python and I'm not a Python >>> programmer. I work in C. So I'm having to dig through this and learn >>> some Python at the same time. Not a bad thing but time consuming! >>> >>> >>> Python examples are in folder src/python. FreeBASIC examples are in >>> folder src/examples. And C examples are in folder src/c_examples. Find >>> an overview at >>> >>> >>> https://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/ChaExamples.html >>> >>> Regards >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to beagleboard...@googlegroups.com. >>> To view this discussion on the web visit >>> >>> https://groups.google.com/d/msgid/beagleboard/04caf3a3-cd8c-449e-9fd7-9ed6df33f99en%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/beagleboard/04caf3a3-cd8c-449e-9fd7-9ed6df33f99en%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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