From 32d6eaec94f2d6abcedba94c528de47a503cd72e Mon Sep 17 00:00:00 2001
From: Stanley Huang <stanleyhuangyc@gmail.com>
Date: Sun, 8 Sep 2013 01:41:39 +0800
Subject: improve stability

---
 libraries/OBD/OBD.h | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

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

diff --git a/libraries/OBD/OBD.h b/libraries/OBD/OBD.h
index b13056d..e75a26f 100644
--- a/libraries/OBD/OBD.h
+++ b/libraries/OBD/OBD.h
@@ -7,9 +7,8 @@
 
 #define OBD_TIMEOUT_SHORT 2000 /* ms */
 #define OBD_TIMEOUT_LONG 7000 /* ms */
-#define OBD_TIMEOUT_INIT 3000 /* ms */
 #define OBD_SERIAL_BAUDRATE 38400
-#define OBD_RECV_BUF_SIZE 64
+#define OBD_RECV_BUF_SIZE 128
 
 #ifndef OBDUART
 #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega644P__)
@@ -37,13 +36,18 @@
 #define PID_RUNTIME 0x1F
 #define PID_DISTANCE 0x31
 
+// states
+#define STATE_DISCONNECTED 0
+#define STATE_CONNECTING 1
+#define STATE_CONNECTED 2
+
 unsigned int hex2uint16(const char *p);
 unsigned char hex2uint8(const char *p);
 
 class COBD
 {
 public:
-	COBD():dataMode(1),errors(0) {}
+	COBD():dataMode(1),errors(0),state(STATE_DISCONNECTED) {}
 	void begin();
 	bool init(bool passive = false);
 	bool readSensor(byte pid, int& result, bool passive = false);
@@ -57,8 +61,11 @@ public:
 	byte errors;
 	byte pidmap[4 * 4];
 	byte vin[17];
+	byte state;
 	//char recvBuf[OBD_RECV_BUF_SIZE];
 protected:
+    byte receive(char* buffer);
+	void debugOutput(const char* s);
 	static int normalizeData(byte pid, char* data);
 	static int getPercentageValue(char* data)
 	{
@@ -80,6 +87,5 @@ protected:
 	virtual char read();
 	virtual void write(const char* s);
 	virtual void write(const char c);
-	virtual void initIdleLoop() {}
 	virtual void dataIdleLoop() {}
 };
-- 
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