From f9f937f54c528aefe5f9504f8bb3f341f3dcb7aa Mon Sep 17 00:00:00 2001
From: Stanley Huang <stanleyhuangyc@gmail.com>
Date: Fri, 4 Apr 2014 11:23:32 +0800
Subject: Minor updates

---
 libraries/OBD/OBD.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'libraries/OBD/OBD.cpp')

diff --git a/libraries/OBD/OBD.cpp b/libraries/OBD/OBD.cpp
index 3dba269..cd5290e 100644
--- a/libraries/OBD/OBD.cpp
+++ b/libraries/OBD/OBD.cpp
@@ -225,14 +225,14 @@ byte COBD::receive(char* buffer, int timeout)
 	unsigned char n = 0;
 	bool prompted = false;
 
-	buffer[0] = 0;
+	if (buffer) buffer[0] = 0;
 	for (;;) {
 	    if (available()) {
 	        char c = read();
 	        if (n > 2 && c == '>') {
 	            // prompt char received
 	            prompted = true;
-	        } else if (n < OBD_RECV_BUF_SIZE - 1) {
+	        } else if (n < OBD_RECV_BUF_SIZE - 1 && buffer) {
 	            buffer[n++] = c;
 	            if (c == '.') {
                     n = 0;
-- 
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