From c63be562c52ea11c14ace95f51fb808b2f9a12b5 Mon Sep 17 00:00:00 2001
From: esc2 <esc2@illinois.edu>
Date: Tue, 5 Feb 2019 12:48:11 -0600
Subject: [PATCH] Update README.md

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 53c2c09..8ec73f0 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,9 @@ Functions I wrote and their purpose:
                   the message_data is created following the appropriate data 
                   structure depending on message_type. Then call the correct
                   function inputting the message_data. 
+                
+                returns: 0 if the packet was successfully read
+                         -1 if the packet has invalid data type or message_type
 
 
 - void display_message(char* message, uint16_t message_length):
-- 
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