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-rw-r--r--nuttx/examples/README.txt7
1 files changed, 6 insertions, 1 deletions
diff --git a/nuttx/examples/README.txt b/nuttx/examples/README.txt
index 84deee63d..2d8ea8a2d 100644
--- a/nuttx/examples/README.txt
+++ b/nuttx/examples/README.txt
@@ -120,7 +120,12 @@ examples/serloop
^^^^^^^^^^^^^^^^
This is a mindlessly simple loopback test on the console. Useful
- for testing new serial drivers.
+ for testing new serial drivers. Configuration options include:
+
+ * CONFIG_EXAMPLES_SERLOOP_BUFIO
+ Use C buffered I/O (getchar/putchar) vs. raw console I/O
+ (read/read). The behavior of the NuttX getchar() call is
+ very hostile unless you also set CONFIG_STDIO_BUFFER_SIZE=0.
examples/udp
^^^^^^^^^^^^