Dave Andersen 71c4e7e4d2 Fix timing on RP2040 pio_ws2812.rs example
The example spins too fast so it doesn't appear to change;
it's delaying for microseconds instead of milliseconds.
This commit slows it down and adds a comment noting the pin
mapping for the Adafruit feather rp2040+RFM95 LoRA module,
which has its Neopixel on pin 4 instead of 16.
2023-08-27 22:39:44 -04:00
..
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