2 files changed, 30 insertions, 3 deletions
diff --git a/libraries/OBD/OBD.cpp b/libraries/OBD/OBD.cpp
index 116a68d..d27fe7b 100644
--- a/libraries/OBD/OBD.cpp
+++ b/libraries/OBD/OBD.cpp
@@ -259,12 +259,19 @@ bool COBD::getResult(byte& pid, int& result)
 	return true;
 }
 
-void COBD::sleep()
+void COBD::enterLowPowerMode()
 {
   	char buf[32];
 	sendCommand("ATLP\r", buf, sizeof(buf));
 }
 
+void COBD::leaveLowPowerMode()
+{
+	// simply send any command to wake the device up
+	char buf[32];
+	sendCommand("ATI\r", buf, sizeof(buf), 1000);
+}
+
 char* COBD::getResultValue(char* buf)
 {
 	char* p = buf;
diff --git a/libraries/OBD/OBD.h b/libraries/OBD/OBD.h
index 73607c7..b064f65 100644
--- a/libraries/OBD/OBD.h
+++ b/libraries/OBD/OBD.h
@@ -75,6 +75,24 @@
 #define PID_ENGINE_TORQUE_PERCENTAGE 0x62
 #define PID_ENGINE_REF_TORQUE 0x63
 
+// non-OBD/custom PIDs (no mode number)
+#define PID_GPS_LATITUDE 0xA
+#define PID_GPS_LONGITUDE 0xB
+#define PID_GPS_ALTITUDE 0xC
+#define PID_GPS_SPEED 0xD
+#define PID_GPS_HEADING 0xE
+#define PID_GPS_SAT_COUNT 0xF
+#define PID_GPS_TIME 0x10
+#define PID_GPS_DATE 0x11
+#define PID_ACC 0x20
+#define PID_GYRO 0x21
+#define PID_COMPASS 0x22
+#define PID_MEMS_TEMP 0x23
+#define PID_BATTERY_VOLTAGE 0x24
+
+// custom PIDs for calculated data
+#define PID_TRIP_DISTANCE 0x30
+
 typedef enum {
     PROTO_AUTO = 0,
     PROTO_ISO_9141_2 = 3,
@@ -115,8 +133,10 @@ public:
 	virtual bool readPID(byte pid, int& result);
 	// read multiple (up to 8) OBD-II PID values, return number of values obtained
 	virtual byte readPID(const byte pid[], byte count, int result[]);
-	// set device into
-	virtual void sleep();
+	// set device into low power mode
+	virtual void enterLowPowerMode();
+	// wake up device from low power mode
+	virtual void leaveLowPowerMode();
 	// send AT command and receive response
 	virtual byte sendCommand(const char* cmd, char* buf, byte bufsize, int timeout = OBD_TIMEOUT_LONG);
 	// read diagnostic trouble codes (return number of DTCs read)