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@@ -3,7 +3,9 @@ This directory contains external library code.
The pjrc_usb_serial directory contains code from:
http://www.pjrc.com/teensy/usb_serial.html
version 1.7 (extracted on 20160605). It has been modified to compile
-on recent versions of gcc. See usb_serial.patch for the modifications.
+on recent versions of gcc, to support asynchronous notification of
+incoming data, and to not use SOF interrupts. See usb_serial.patch for
+the modifications.
The cmsis-sam3x8e directory contains code from the Arduino project:
https://www.arduino.cc/