Merge pull request #14 from jtanx/master

[matches/MCTX3420.git] / server / sensor.c

diff --git a/server/sensor.c b/server/sensor.c
index f1ec5dc..a3d3f0b 100644 (file)
--- a/server/sensor.c
+++ b/server/sensor.c
@@ -105,13 +105,12 @@ void * Sensor_Main(void * arg)
                // CRITICAL SECTION (no threads should be able to read/write the file at the same time)
                pthread_mutex_lock(&(s->mutex));
 
-                       // Open binary file and dump buffer into it
-                       FILE * file = fopen(s->filename, "wb");
+                       // Open binary file in append mode and dump buffer into it
+                       FILE * file = fopen(s->filename, "ab");
                        if (file == NULL)
                        {
-                               Fatal("Couldn't open file \"%s\" mode wb - %s", s->filename, strerror(errno));
+                               Fatal("Couldn't open file \"%s\" mode ab - %s", s->filename, strerror(errno));
                        }
-                       fseek(file, 0, SEEK_END);
                        int amount_written = fwrite(s->buffer, sizeof(DataPoint), SENSOR_DATABUFSIZ, file);
                        if (amount_written != SENSOR_DATABUFSIZ)
                        {