add build tags to i2s.go

soypat · soypat · commit 892dc73511e3 · 2023-11-01T20:38:32.000-03:00
diff --git a/rp2-pio/piolib/i2s.go b/rp2-pio/piolib/i2s.go
@@ -1,3 +1,5 @@
+//go:build rp2040 && go1.18
+
 package piolib
 
 import (
