From c87358869359bf0647e32d5a2f551ab32ca68e97 Mon Sep 17 00:00:00 2001
From: Alasdair Allan <alasdair@raspberrypi.com>
Date: Thu, 4 Feb 2021 11:13:40 +0000
Subject: [PATCH] Update pio_spi.py

Missing import, see comments in raspberrypi/pico-micropython-examples#14
---
 pio/pio_spi.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pio/pio_spi.py b/pio/pio_spi.py
index eb5490a..3964061 100644
--- a/pio/pio_spi.py
+++ b/pio/pio_spi.py
@@ -1,3 +1,4 @@
+from rp2 import PIO, asm_pio
 from machine import Pin
 
 @rp2.asm_pio(out_shiftdir=0, autopull=True, pull_thresh=8, autopush=True, push_thresh=8, sideset_init=(rp2.PIO.OUT_LOW, rp2.PIO.OUT_HIGH), out_init=rp2.PIO.OUT_LOW)
@@ -45,4 +46,4 @@ class PIOSPI:
         for b in wdata:
             self._sm.put(b << 24)
             rdata.append(self._sm.get() & 0xff)
-        return rdata
\ No newline at end of file
+        return rdata