I'm setting a variable using a 1P x 12W rotary switch. Some of the switch settings have an obvious relationship with the pins used. So is there a neater/smarter/more compact way to code the following please? if (digitalRead(3) == LOW) { file = 2; } if (digitalRead(4) == LOW) { file = 3; } if (d…

since you're not using else if, is there a priority? in other words, file will always be 9 if pin 10 is LOW

Make an array with the GPIO pin numbers. Make an array with the values file can be. Use a for( ) loop, scan each element in the GPIO array, set file to the equivalent element.

Or, for an alternate approach, look through this thread(it's long, look near the end). Uses a single analog input for a rotary wafer. [image] Can I have your opinion please! General Guidance Hi I'm starting a project, It will be using 2 rotary selectors, each with 18 posi…

consider collecting 3 of the inputs into a 3-bit value used to determine file const byte PinInp [] = { A1, A2, A3 }; const int Ninp = sizeof(PinInp); byte file; byte bitsLst; char s [80]; void loop () { byte bits = 0; for (int n = 0; n < Ninp; n++) { bits <<= 1; bits |= …

[image] Terrypin: more compact way for (int i=3;i<11;i++){ if (!digitalRead(i)){ file = i - 1; break; } } have fun.. ~q

[image] gcjr: consider collecting 3 of the inputs Please elaborate. How do we go from a 12 position selector switch to this collection of three inputs? @Terrypin are you just not going to use but 8 of the switch positions? Otherwise it seems this proposed collecting would need to collect 4…

[image] alto777: How do we go from a 12 position selector switch to this collection of three inputs? i only saw 8 possible values for file. if there are 16 or less, use 4 pins

[image] gcjr: if there are 16 or less, use 4 pins Yes, like I said. Now 'splain this "collecting". a7

[image] alto777: Now 'splain this "collecting". ok, i didn't read that the OP is using a rotary switch. guess i'm suggesting not only a way to make the SW simpler, but the hardware as well

No priority, all mutually exclusive. And all code is in setup(), nothing in loop().

Neater way to code these choices?

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camsysca May 20, 2023, 4:42pm 4

Or, for an alternate approach, look through this thread(it's long, look near the end). Uses a single analog input for a rotary wafer.

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Neater way to code these choices?

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