--- a/components/r2d_drv_flash	Fri Oct 07 22:04:02 2016 +0000
+++ b/components/r2d_drv_flash	Sat Oct 08 03:55:20 2016 +0000
@@ -125,4 +125,14 @@
 
 # Source modules
 
-cfile_plain $SRCDIR/board/uwire.c
+#cfile_plain $SRCDIR/board/uwire.c
+
+# FreeCalypso change: TI's TCS211 build always includes uwire.c in the lib,
+# but we are currently excluding it unconditionally because none of our
+# supported configurations need it: on the C139 this code is wrong and MUST
+# be excluded, whereas the D-Sample LCD doesn't use uWire and the code never
+# gets pulled into the link even if it's included in the lib.
+#
+# The code in r2d/board/uwire.c is only needed when targeting the real
+# C-Sample (not C139 emulation) or earlier TI boards, but our build system
+# does not currently support those anyway.