[TriEmbed] ESP8266 Programming tip

[Carl Nobile]

This one may be better.
https://deepbluembedded.com/why-use-timer-instead-of-delay/


On Tue, Jan 26, 2021 at 1:35 PM Carl Nobile <carl.nobile at gmail.com> wrote:

> John,
>
> So I assume you need a delay there, so what you can do is use an interrupt
> in your delay. Then the delay is managed between all other interrupts.
>
> I found this simple example of using an interrupt as a delay. It' uses an
> Arduino, but the concept may help.
> https://thekurks.net/blog/2016/4/25/using-interrupts
>
> ~Carl
>
> On Tue, Jan 26, 2021 at 1:22 PM John Vaughters via TriEmbed <
> triembed at triembed.org> wrote:
>
>> Carl,
>>
>> Right, makes sense, I really use delays sparingly and go for millis() But
>> this was a copy-paste task. and it was only 25ms of delay, so I let it
>> slide. And considering I am probably only using like 10% of computing power
>> I thought I could let it slide. And I could have if it wasn't for you
>> meddling programmers. `,~)
>>
>> Normally I only use a short delay at the end of the loop if the loop is
>> moving to fast, or for comm purposes. so definitely out of norm for me. I
>> still like the original work around though. I would use it again if in a
>> pinch.
>>
>> Good discussion in any case and now I have a better grasp on Ticker.
>>
>> Makes one of my Dad's best advice quotes ring true:
>>
>> When all else fails, read the instructions ~ Dad
>>
>> Good Stuff,
>>
>> John Vaughters
>>
>>
>>
>>
>>
>>
>> On Tuesday, January 26, 2021, 12:51:13 PM EST, Carl Nobile <
>> carl.nobile at gmail.com> wrote:
>>
>>
>>
>>
>>
>> Yeah, delays could mess with interrupts even if they are not in the
>> interrupt itself. Actually what happens is the interrupt messes with the
>> delay. If the interrupt happens in the middle of the delay the delay will
>> be longer than what you set it at.
>> Almost all processors will be running interrupts even if you're not using
>> any.
>> There are other people in the group that have more experience with this
>> than I, so just my two cents.
>>
>> ~Carl
>>
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>
> --
>
> -------------------------------------------------------------------------------
> Carl J. Nobile (Software Engineer)
> carl.nobile at gmail.com
>
> -------------------------------------------------------------------------------
>


-- 
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Carl J. Nobile (Software Engineer)
carl.nobile at gmail.com
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