Timeline for How can I estimate the speed of this code section for this microcontroller?
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
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| Jan 12, 2020 at 9:35 | answer | added | Bruce Abbott | timeline score: 0 | |
| Jan 12, 2020 at 7:14 | comment | added | Bruce Abbott |
Your new code has the same problem as the old code:- val and data are not used so they will be optimized away.
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| S Jan 12, 2020 at 6:53 | history | suggested | Peter Mortensen | CC BY-SA 4.0 |
Copy edited. Fixed the question formation - missing auxiliary (or helping) verb - see e.g. <https://www.youtube.com/watch?v=t4yWEt0OSpg&t=1m49s> (see also <https://www.youtube.com/watch?v=kS5NfSzXfrI> (QUASM)). Fixed the indentation (including for use in a Markdown list).
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| Jan 11, 2020 at 13:42 | review | Suggested edits | |||
| S Jan 12, 2020 at 6:53 | |||||
| Jan 10, 2020 at 10:25 | comment | added | Mast | Have you tried a hardware profiler to measure instead of estimate? | |
| Jan 10, 2020 at 1:44 | answer | added | Oldfart | timeline score: 11 | |
| Jan 10, 2020 at 1:13 | history | edited | ty_1917 | CC BY-SA 4.0 |
added 665 characters in body
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| Jan 10, 2020 at 0:16 | answer | added | yar | timeline score: 14 | |
| Jan 10, 2020 at 0:00 | history | tweeted | twitter.com/StackElectronix/status/1215423202916274176 | ||
| Jan 9, 2020 at 21:05 | comment | added | The Photon |
You can write your code as just val = ((PIND & (1 << PIND6)) == (1 << PIND6));, or val = ((PIND >> PIND6) & 1); (and probably a bunch of other ways). You should look at your compiler output to see whether you get different assembly code in each case and which one is fastest.
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| Jan 9, 2020 at 19:08 | history | became hot network question | |||
| Jan 9, 2020 at 12:10 | comment | added | Criticizing Israel not allowed | I expect this will capture the digital input state correctly, every time it runs, at any frequency. The question is, how often can you run this code? | |
| S Jan 9, 2020 at 12:03 | history | suggested | Mike | CC BY-SA 4.0 |
I try to format the code
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| Jan 9, 2020 at 11:50 | review | Suggested edits | |||
| S Jan 9, 2020 at 12:03 | |||||
| Jan 9, 2020 at 11:35 | answer | added | Curd | timeline score: 8 | |
| Jan 9, 2020 at 11:08 | answer | added | Swedgin | timeline score: 22 | |
| Jan 9, 2020 at 11:00 | history | asked | ty_1917 | CC BY-SA 4.0 |