From 445c52cdf4fc359f9b5d544ce6d45ed476d656b1 Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Thu, 2 Jun 2016 22:54:59 -0500
Subject: [PATCH] Add more validation to serial read state machine

---
 avr/send.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/avr/send.c b/avr/send.c
index 611cade..3cd8f18 100644
--- a/avr/send.c
+++ b/avr/send.c
@@ -198,8 +198,24 @@ int main() {
             }
 
             case 2: {
-                header.type = c;
-                i++;
+                switch (c) {
+                    case 0x01:
+                    case 0x02:
+                    case 0x04:
+                    case 0x08:
+                    case 0x0f: {
+                        header.type = c;
+                        i++;
+
+                        break;
+                    }
+
+                    default: {
+                        i = 0;
+
+                        break;
+                    }
+                }
 
                 break;
             }