WS2812b LEDs with unusal GRB mapping

[phedders]

Is there an easy way to configure an LED string that is mapped weirdly - where Red and Green are swapped?

I was wondering about adding another LedTable.

Apologies if I missed the obvious. I'm on 3.9.7 IIRC.
And again many thanks for an awesome fw!

[arendst]

As a test change the colortype in xdrv_ws2812.ino from

NeoGrbFeature

into

NeoRgbFeature

and see what happens.

[phedders]

What a pain.

I changed line 34 - and tried that - no change - but then I'm not using pin3

I cannot change 36 because (I think) that feature is not compatible with the bitbang lib (I've hit that before on my code)

/home/prh/Sonoff-Tasmota/sonoff/xdrv_ws2812.ino: In function 'void ws2812_init()':
/home/prh/Sonoff-Tasmota/sonoff/xdrv_ws2812.ino:462:9: error: cannot convert 'NeoPixelBus<NeoGrbFeature, NeoEsp8266BitBangMethodBase >' to 'NeoPixelBus<NeoRgbFeature, NeoEsp8266BitBangMethodBase >' in assignment

I'll try using DMA (pin 3/rx)

[arendst]

You'll have to change lines 34, 36 , 460 and 462!

Compiling works for me...

[phedders]

Tried on GPIO03 - and still RG are swapped:

FTR I also set in user_config.h:

129 #define USE_WS2812 // WS2812 Led string support (+8k code, +1k mem)
130 #define USE_WS2812_DMA // DMA supports only GPIO03 (= Serial TXD) (+1k mem)

Thanks Theo.

[phedders]

OK I'm an idiot - changed all of those occurrences and it does work just fine with RG swapped 👍
Thanks for your patience. Do you think this could be configurable?

[arendst]

Fixed in version 3.9.10 just released

[phedders]

You're amazing - Thanks for such a quick response. Would it be possible to configure on a running system? I have a mix of 2812's and of course most are GRB - just a few RGB (the traditional LED shape ones) and it would be nice to have one firmware image for them all.

If that is not possible I totally understand :)

[arendst]

Looked at it and it's just too much overhead as a new object needs to be defined Makuna/NeoPixelBus#103

[phedders]

Oh thats a shame - thanks again.