Switch Debounce

RE: Switch Debounce

Inspectron — Mon, 28 Sep 2015 10:55:59 GMT

No. not necessary ;)

RE: Switch Debounce

Lakerno — Mon, 28 Sep 2015 10:33:14 GMT

ok. with this timer solution, do you still use the RC debouncer??

RE: Switch Debounce

Inspectron — Mon, 28 Sep 2015 08:57:42 GMT

Well I think the debouncing could be the only logical issue. Because the most of the time it works. But now I have an other solution which works great. I have timer and in the timeout handler of the timer I will just read the pin of the switch. Now I will always detect if the button is pressed or not

RE: Switch Debounce

Lakerno — Sun, 27 Sep 2015 16:39:58 GMT

Hi Inspectron, how did you conclude that this is an issue regarding debouncing?? Even without the RC debouncing logic, shouldnt the switch when connected to DOWN eventually settle to 3.3V? so if you poll the pin for a few seconds, couldnt you fix the issue with debouncing??

RE: Switch Debounce

Inspectron — Mon, 14 Sep 2015 08:22:49 GMT

I'm using the softdevice and I'm generating a pwm signal. I also use ADC. Only the down position seems not to work. The up position isnt missing interrupts. And yes I'm sure that the circuit is the same for up and down.

RE: Switch Debounce

MartinBL — Mon, 14 Sep 2015 07:40:04 GMT

Do you have a lot of other stuff going on in your application? A Softdevice running etc?

You said in your initial post that it didn't work in the down position, is that still the case? Are you sure that the "down position-circuit" is exactly the same as the up-position? Same components values etc?

RE: Switch Debounce

Inspectron — Fri, 11 Sep 2015 14:06:16 GMT

So NRF_GPIOTE ->EVENTS_IN[0] = 0; is for clearing the interrupt? I tried it out. It works better, but still not perfect. Now when I try it 20 times, once the interrupt will not occur).

RE: Switch Debounce

MartinBL — Fri, 11 Sep 2015 06:49:19 GMT

Have a look at these two threads: 1 & 2.

RE: Switch Debounce

Inspectron — Thu, 10 Sep 2015 14:11:12 GMT

I do not clear the signal between the interrupts. How does the clear interrupt function looks like?

RE: Switch Debounce

MartinBL — Mon, 07 Sep 2015 11:24:40 GMT

Hi. I have never seen a debounce circuit like this, but I assume it works. I don't see any reason why pin 25 would behave different than pin 28 either. Could it be that your DETECT signal is not cleared between the interrupts? Link and link.