add const import

AVanVlack · AVanVlack · commit 1461df52b356 · 2021-09-05T16:36:05.000-07:00
diff --git a/adafruit_sgp40/voc_algorithm.py b/adafruit_sgp40/voc_algorithm.py
@@ -11,6 +11,7 @@
 * Author(s): yangfeng
 
 """
+from micropython import const
 
 _VOCALGORITHM_SAMPLING_INTERVAL = const(1)
 _VOCALGORITHM_INITIAL_BLACKOUT = const(45)
