From 289fdc124163e0e6fa8e4f418d7153b7349f88b9 Mon Sep 17 00:00:00 2001
From: Alec Delaney <tekktrik@gmail.com>
Date: Fri, 13 May 2022 11:15:26 -0400
Subject: [PATCH] Added link to library and guide for rp2pio

---
 ports/raspberrypi/bindings/rp2pio/__init__.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ports/raspberrypi/bindings/rp2pio/__init__.c b/ports/raspberrypi/bindings/rp2pio/__init__.c
index b3b45dc923..941ede2e12 100644
--- a/ports/raspberrypi/bindings/rp2pio/__init__.c
+++ b/ports/raspberrypi/bindings/rp2pio/__init__.c
@@ -30,7 +30,14 @@
 #include "bindings/rp2pio/StateMachine.h"
 #include "bindings/rp2pio/__init__.h"
 
-//| """Hardware interface to RP2 series' programmable IO (PIO) peripheral."""
+//| """Hardware interface to RP2 series' programmable IO (PIO) peripheral.
+//|
+//| .. note:: This module is intended to be used with the `adafruit_pioasm library
+//|     <https://github.com/adafruit/Adafruit_CircuitPython_PIOASM>`_.  For an
+//|     introduction and guide to working with PIO in CircuitPython, see `this
+//|     Learn guide <https://learn.adafruit.com/intro-to-rp2040-pio-with-circuitpython>`_.
+//|
+//| """
 //|
 
 //| def pins_are_sequential(pins: List[microcontroller.Pin]) -> bool: