Enable sweep when resetting settings

sa_core.c

@@ -63,6 +63,7 @@ void reset_settings(int m)
 {
 //  strcpy((char *)spi_buffer, dummy);
   setting.mode = m;
+  sweep_mode |= SWEEP_ENABLE;
   setting.unit_scale_index = 0;
   setting.unit_scale = 1;
   setting.unit = U_DBM;