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YAUT!
Got the bonus? Pretty sure Paul has.
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Nope. PUPA. Tuesday's solution was CATERPILLAR, Monday's was BUTTERFLIES.
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Well, that just buggers tomorrows theme solution!
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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oops!
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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As a cost saving measure this little e-paper gadget I have lacks a video controller. Instead, there are 14 pins wired from my MCU directly into the e-paper panel itself.
I've rarely had to write code this utterly incomprehensible. Driving an e-paper display panel in software is stupid. Especially given this one is "misusing" the I2S hardware to do so.
Real programmers use butterflies
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honey the codewitch wrote: there are 14 pins wired from my MCU directly into the e-paper panel itself I think e-paper isn't the best medium to watch the Marvel Cinematic Universe
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Cost saving or lack of software developer? I saw some weird s* because the product developers were all hardware men and couldn't find their way out of an Hello World with a map and a GPS navigator.
To the point that I saw two simple for cycles implemented with goto because the programmer just didn't know about cycles
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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It's hardware that it's missing, not software. =). It's not that the controller is hard to use - it's that there isn't one at all.
Real programmers use butterflies
modified 16-Feb-22 7:51am.
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Is this an epaper where it remembers state if it loses power?
If yes, maybe they were going super minimalist for power savings?
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all e-papers do as far as I've seen. It's probably actually more power hungry this way, because what was a simple hardware component is now a complex piece of software running on a 240Mhz 32-bit processor
Real programmers use butterflies
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arduino / raspberry pi? just saying
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I mean yes, I can use the MCU as a display panel controller, but that's like buying a humvee to drive to your mailbox and back.
Real programmers use butterflies
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I just got my compiler to compute a sine table using a taylor series expansion.
Real programmers use butterflies
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... In Q15.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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... Fine for Cortex-M0.
"In testa che avete, Signor di Ceprano?"
-- Rigoletto
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And M3, and M4 depensing on the system on chip RAM can be expensive real estate.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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Quote: and M4 What a damned luxury thingy you are messing with!
"In testa che avete, Signor di Ceprano?"
-- Rigoletto
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The one we're probably about to use is awesome, it has independent UARTs with internal self managed FIFOs for reading and writing, a Timer Capture interface that almost makes coffee... With respect to my experience with M0 and the current M3 it's truly luxury.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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The biggest problem with accurate computation of trig. functions is not computation of the result from the reduced argument, but reducing the argument to the range [-Pi, Pi).
For example, 10^22 is accurately representable as a double. sin(10^22) requires finding the exact remainder of division by 2*Pi, which is non-trivial. See the following article for details: https://www.csee.umbc.edu/~phatak/645/supl/Ng-ArgReduction.pdf
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Restrict to [0 - Pi/2] and then flip the result depending on the argument. Either you get 1/4 of the memory usage or 4 times the interpolation points.
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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You still need to reduce the argument to that range, which is a major source of inaccuracy. That is what I pointed out.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Yeah I actually thought in fixed point, where accuracy is lost at the very beginning (but it's easier to calculate).
GCS d--(d-) s-/++ a C++++ U+++ P- L+@ E-- W++ N+ o+ K- w+++ O? M-- V? PS+ PE- Y+ PGP t+ 5? X R+++ tv-- b+(+++) DI+++ D++ G e++ h--- r+++ y+++* Weapons extension: ma- k++ F+2 X
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