1 files changed, 3 insertions, 1 deletions
diff --git a/nrf51.md b/nrf51.md
index 0737ca0..90f19e4 100644
--- a/nrf51.md
+++ b/nrf51.md
@@ -43,7 +43,9 @@ Device   | Size   | Start       | End         | Size   | Start       | End
 
 # Debugging
 
-    screen /dev/ttyACM0 115200,-ixon,-ixoff
+When using the nRF51-DK or the dongle you'll talk to the nRF chip through the Segger chip. It will only listen for traffic when a terminal is connected to /dev/ttyACM0. The terminal must use the DTR (data terminal ready) signal for the Segger to disable the tristating of the uart pins and start listening.
+
+    screen /dev/ttyACM0 115200,ixon,ixoff
 
 ## GDB