Ws2812 Strip on standalone Atmega328p

Using Arduino Programming Questions
#1

Hi All,

I am working on a standalone board with an Atmega328P. I have an RGB strip (with WS2812 LEDs) connected to pin PB5. The problem I am facing is when using the Adafruit NeoPixel Library.

The library seems to support this, but I can't figure out how to set it that it uses PB5 (which doesnt have a pin number on an Arduino).

Anyone know what to define or set so that the library will use pin PB5?

Best regards
Jono

#2

Is PB5 not mapped to Arduino pin 13 ?

#3

You are right! Thank you :smiley: That works.

But out of curiosity, would there be a way to use it on pins not mapped in Arduino?

#4

You could use direct port manipulation so that you do not need to refer to an Arduino pin number

#5

Which pins would not be mapped for a 328P?

#6

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