SerialStream fork implementing sigio, attach, readable, and writable

Revision:
1:9437ea7d0799
Parent:
0:889cfd2df4cd
Child:
2:3736580f2dbe
--- a/SerialStream.h	Wed Jul 15 16:25:25 2020 -0700
+++ b/SerialStream.h	Tue Aug 25 17:53:20 2020 -0700
@@ -1,6 +1,7 @@
 #ifndef SERIALSTREAM_H
 #define SERIALSTREAM_H
 
+#include <mbed.h>
 #include <platform/Stream.h>
 
 /**