TinyGo and Raspberry Pi Pico: GPIO and Interrupts

[@iaingeddes7159]

Fantastic series! Thanks

[@nodidog]

Just wanted to say thanks, for putting this series out. I really appreciate it!

[@crooked8168]

Did they add Wi-Fi connection to ESP32 ?

[@jyoun79]

Very cool!

[@tonygilkerson]

This is great, I am learning how to code pico with TinoGo and there are many python examples but actual TinyGo examples are hard to find so please keep them coming. I do have a question. Is the execution of the interrupt function concurrent or parallel? For example if you were to put a sleep in your function that checks the button status would the other light pause for awhile?

[@pragmatiktech]

Yes it would. Although time.Sleep seems to be disabled in an interrupt service routine. I'm working on a video to illustrate this - based on this question and the one you asked on my other video. Stay tuned.

[@pragmatiktech]

Tony: Here you go: kzbin.info/www/bejne/bZC9hHSIrcaFas0

[@tonygilkerson]

I finally got around to trying this out. I have a single push button and I SetInterrupt for when it is pressed. When pressed I print "hi". This works but sometimes it prints "hi" real quick several times if I don't push the button quickly. I think I heard someone call this pin-bouncing? Can you suggest a technique I can us to avoid this?

[@tonygilkerson]

I did some searching and found that I can fix in software or hardware, I am better at programming so I will try to fix in software. Looks like I can read the pin value in a loop and introduce a small delay when pressed to debounce. Looks like that can work but seems to make the use of SetInterrupt not needed. I like the SetInterrupt approach so any advice is appreciated

[@pragmatiktech]

@@tonygilkerson You'll need to debounce your switches. Unfortunately, I couldn't figure out an easy way to debounce in software on the Pico using TinyGo since we need to keep the ISR execution time really small. A simple hardware debouncer might do the trick.

[@pragmatiktech]

Take a look at github.com/tinygo-org/tinygo/pull/2233/files for a possible example.

[@tonygilkerson]

@@pragmatiktech I just took a look at that example, I like it... I will try that next. You are a great resource, I appreciate your help. I will report back to let you know if it works,

[@pragmatiktech]

@@tonygilkerson More than happy to help and to have people like you with whom I can share this learning journey.