Clarify PIO define is optional in docs. (#22339)
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@ -170,7 +170,7 @@ To configure it, add this to your rules.mk:
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WS2812_DRIVER = vendor
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```
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Configure the hardware via your config.h:
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You may optionally switch the PIO peripheral used with the following define in config.h:
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```c
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#define WS2812_PIO_USE_PIO1 // Force the usage of PIO1 peripheral, by default the WS2812 implementation uses the PIO0 peripheral
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```
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