X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=server%2Fsensor.h;h=a2590365ecf3f484bdef615c9e4ca505ed4a9a40;hb=cf310248b767630a93e81f9cd9cd3700d0d45cb5;hp=b9a5aaded02aea4d1903bfd3ab19d699c139415e;hpb=43c1519cb60f8fef09043b9af6f43d319db12e3d;p=matches%2FMCTX3420.git

diff --git a/server/sensor.h b/server/sensor.h
index b9a5aad..a259036 100644
--- a/server/sensor.h
+++ b/server/sensor.h
@@ -5,13 +5,57 @@
  */
 
 
-
 #ifndef _SENSOR_H
 #define _SENSOR_H
 
+/** Number of data points to keep in sensor buffers **/
+#define SENSOR_DATABUFSIZ 10
+
+#define SENSOR_QUERYBUFSIZ 10
+
+/** Number of sensors **/
+#define NUMSENSORS 1
+
+/** Structure to represent data recorded by a sensor at an instant in time **/
+typedef struct
+{
+	/** Time at which data was taken **/
+	struct timeval time_stamp; //TODO: Consider; use float instead?
+	/** Value of data **/
+	float value;
+} DataPoint;
+
+/** Structure to represent a sensor **/
+typedef struct
+{
+	/** ID number of the sensor **/
+	enum {SENSOR_TEST0=0, SENSOR_TEST1=1} id;
+	/** Buffer to store data from the sensor **/
+	DataPoint buffer[SENSOR_DATABUFSIZ];
+	/** Index of last point written in the data buffer **/
+	int write_index;
+	/** Offset position in binary file for query thread to read from**/
+	int read_offset;
+	/** Binary file to write data into when buffer is full **/
+	FILE * file;
+	/** Thread running the sensor **/
+	pthread_t thread;
+	/** Mutex to protect access to stuff **/
+	pthread_mutex_t mutex;
+
+	
+} Sensor;
+
+
+
+extern void Sensor_Spawn(); // Initialise sensor
+extern void Sensor_Join(); //Join sensor threads
+extern void * Sensor_Main(void * args); // main loop for sensor thread; pass a Sensor* cast to void*
+
+extern int Sensor_Query(Sensor * s, DataPoint * buffer, int bufsiz); // fill buffer with sensor data
 
+extern void Sensor_Handler(FCGIContext *context, char * params);
 
-extern void * Sensor_Main(void * args); // main loop for sensor thread
 
 #endif //_SENSOR_H