Hi! > > > would it be possible to make the leds-gpio driver compatible with the new > > > multicolor framework for a light that's composed of 3 leds (red, green, > > > blue) and where each led is controlled via a gpio (so it can produce 8 > > > different colors)? As far as I can tell leds-gpio is too generic to > > > support that but please correct me if I'm wrong. What's the way forward > > > here for this use case? The same probably also applies to leds-pwm. > > > > For pwm it definitely makes sense. > > I think it also makes sense for plain GPIO, I asked the same thing last year > IIRC. It may make sense, yes. > > For gpio... well, I'm not sure you'll get useful colors that way. You > > can probably still do multicolor, yes. > > Let's assume a typical RGB LED, like the one on the SAMA5D27-SOM1-EK board, > you would roughly get those colors: > > - R: red > - G: green > - B: blue > - R + G: yellow > - R + B: magenta > - G + B: cyan > - R + G + B: white > > I count more than twice the colors as with the simple leds-gpio approach only. > ;-) Well, you can still produce all the colors with three gpio leds. And for resistors are not calibrated carefully, you'll get: - R: red - G: green - B: blue - R + G: green with hint of yellow - R + B: blue - G + B: blue - R + G + B: blue :-) But yes, patch might be interesting. Will you create one? Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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