1 files changed, 30 insertions, 0 deletions
diff --git a/ext/readme.txt b/ext/readme.txt
new file mode 100644
index 000000000..04b45625d
--- /dev/null
+++ b/ext/readme.txt
@@ -0,0 +1,30 @@
+*****************************************************************************
+** External Libraries.                                                     **
+*****************************************************************************
+
+The libraries under this directory are not part of ChibiOS/RT but are used by
+some of the demo applications.
+Please note that each item is covered by its own license, please read the
+instructions contained in the various distributions.
+
+The currently included items are:
+
+1. uip-1.0, a minimal TCP/IP implementation: http://www.sics.se/~adam/uip/
+2. lwip-1.4.0, lightweight TCP/IP stack: http://savannah.nongnu.org/projects/lwip/
+3. FatFS 0.9 (patched), the original version is available from
+   http://elm-chan.org/fsw/ff/00index_e.html
+
+The above files are included packed as downloaded from the original repository
+and without any modification, in order to use the libraries unpack them
+under ./ext as:
+
+./ext/uip-1.0
+./ext/lwip
+./ext/fatfs
+./ext/stm32lib (you also need to copy stm32f10x_conf.h in your project)
+
+Some patches are also present:
+
+1. uip-1.0 patches, small fixes to the uIP required to make it work with
+   ChibiOS/RT, unpack the archive over the uIP distribution and replace the
+   files.