Fixed bug with logging. Was accidentally writing rows by 4 rather than by 1,...

Fixed bug with logging. Was accidentally writing rows by 4 rather than by 1, and would write beyond the limits.
Also properly initializing the initial value of the hw_unix_timer so Valgrind doesn't complain.

quad/src/quad_app/log_data.c

@@ -138,7 +138,7 @@ int log_data(log_t* log_struct, parameter_t* ps)
 	{
 		return 1;
 	}
-	float* thisRow = &logArray[arrayIndex * row_size * sizeof(float)];
+	float* thisRow = &logArray[arrayIndex * row_size];
 	int offset = 0;
 	thisRow[offset++] = log_struct->time_stamp;
 	thisRow[offset++] = log_struct->gam.accel_x;
@@ -234,7 +234,7 @@ void format_log(int idx, log_t* log_struct, struct str* buf) {
 	int i;
 	buf->size = 0;
 	
-	float* row = &logArray[idx * row_size  * sizeof(float)];\
+	float* row = &logArray[idx * row_size];\
 
 	safe_sprintf_cat(buf, "%f", row[0]);
 	for (i = 1; i < row_size; i++) {

quad/src/virt_quad/hw_impl_unix_global_timer.c

@@ -4,6 +4,9 @@ int unix_global_timer_reset(struct TimerDriver *self) {
   if (self->state == NULL) {
     self->state = malloc(sizeof(struct timeval));
   }
+  struct timezone tz;
+  struct timeval *start = self->state;
+  gettimeofday(start, &tz);
   return 0;
 }