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 ++--
 libraries/OBD/OBD.h   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

(limited to 'libraries')

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;
diff --git a/libraries/OBD/OBD.h b/libraries/OBD/OBD.h
index 22d9f12..2718eb2 100644
--- a/libraries/OBD/OBD.h
+++ b/libraries/OBD/OBD.h
@@ -10,7 +10,7 @@
 #define OBD_TIMEOUT_SHORT 2000 /* ms */
 #define OBD_TIMEOUT_LONG 7000 /* ms */
 #define OBD_SERIAL_BAUDRATE 38400
-#define OBD_RECV_BUF_SIZE 80
+#define OBD_RECV_BUF_SIZE 128
 
 #ifndef OBDUART
 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega644P__)
@@ -155,7 +155,7 @@ public:
     // GPS API
     bool gpsQuery(GPS_DATA* gpsdata);
     void gpsSetup(uint32_t baudrate, const char* cmds = 0);
-private:
+protected:
     bool sendCommand(byte cmd, uint8_t data = 0, byte* payload = 0, byte payloadBytes = 0);
     byte receive(char* buffer, int timeout = OBD_TIMEOUT_SHORT);
     byte m_addr;
-- 
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