PWM dimming, delay, decreasing??

[bastibasti]

Hi,

I'm trying to convert an old avr dimmer to esp8266 with espeasy. So far, hardware works as expected... However, it seems like, when setting the pwm, for example

pwm=12,1024,1000 -> ok nice and smooth
pwm=12,100,1000 -> it goes to 0 and then starts to increase to 100, instead of decreasing from 1024
if you set
pwm=12,0,1000 -> immediately off

is this intentionally or a bug??

[ThomasB]

I reviewed _P001_Switch.ino to see if there is an explanation. As written, PWM (with optional duration function) is configured to "increase" the PWM value (e.g., brighten effect). It does not offer a traditional fade. But it will wrap around to a lower PWM value when the new PWM value is smaller than the previous. This matches what you are seeing.

is this intentionally or a bug??

I would label it as an intentional bug.

- Thomas

[bastibasti]

what a mess.

mega-20181028 is able to slowly dim down.

are there any notes, why the behaviour was changed?

[ThomasB]

The switch plugin went through some changes a few weeks ago. There was some discussion on it doing too much. Then it was reverted after things broke. I'm surprised you see it working differently than before.
- Thomas

[bastibasti]

also, while I'm complaining like an old woman.... an option to set the pwm frequency would be great. like pwmfreq=100 for 100hz

[Domosapiens]

PWM,<GPIO>,<duty>,<duration>,<frequency>

https://espeasy.readthedocs.io/en/lates ... hlight=pwm

[Rampler]

This is a known bug !!
Use a version with Core 2.4.1, all is fine ...
I use ESPEasy_mega-20180506 and PWM is working.

[bastibasti]

This is a known bug !!
Use a version with Core 2.4.1, all is fine ...
I use ESPEasy_mega-20180506 and PWM is working.

No it isn't.... dimming down doesnt work on the 20190413 core241 i just loaded

[bastibasti]

oh,

and I want to add:

/control?cmd=pwm,2,512,7000,500

-> I cannot find any release, where the pwmfreq is set to 500 either

its broken.

[Rampler]

This is a known bug !!
Use a version with Core 2.4.1, all is fine ...
I use ESPEasy_mega-20180506 and PWM is working.

No it isn't.... dimming down doesnt work on the 20190413 core241 i just loaded

As a said, try ESPEasy_mega-20180506 and all is fine ..

[bastibasti]

I decided to go a different route. I'm currently making a wemos d1 shield with an avr that handles the pwm. (the easyesp also cannot simultaneously dim)

[jbishop129]

I can confirm this is still an issue. I can fade up just fine, but cannot fade down. I can also confirm that loading the much older 2018-05-06 version, fading down works just fine. What's the deal with getting this fixed, since this seems to be a regression from over a year ago?

[fra290]

... So far, hardware works as expected...

I'm interested to have the Hardware project, can you share?
MArco

[bastibasti]

... so far still making changes and adjusting. might need a little change in hardware if i cannot adjust the speed correctly. I will reply to you later

[TD-er]

This issue was caused by the pin state monitor which has been changed a while ago.
This tried to store the current PWM value in a parameter of only a few bits.
I just created a fix for this and it will be merged later today (and thus included in tomorrow's build)