1 files changed, 10 insertions, 0 deletions
diff --git a/FT245.h b/FT245.h
index b5438d3..03280d1 100644
--- a/FT245.h
+++ b/FT245.h
@@ -6,11 +6,21 @@
 #include <stdbool.h>
 #include "circular_buffer.h"
 
+#ifndef FT245_DRIVER_MODE_DYNAMIC
 #define FT245_DRIVER_MODE_DYNAMIC 1
+#endif
+
+#ifndef FT245_DRIVER_MODE_STATIC
 #define FT245_DRIVER_MODE_STATIC 0
+#endif
 
+#ifndef FT245_BUFFER_SIZE_TX
 #define FT245_BUFFER_SIZE_TX 64
+#endif
+
+#ifndef FT245_BUFFER_SIZE_RX
 #define FT245_BUFFER_SIZE_RX 64
+#endif
 
 typedef circular_buffer_struct(uint8_t, FT245_BUFFER_SIZE_TX) buffer_tx_t;
 typedef circular_buffer_struct(uint8_t, FT245_BUFFER_SIZE_RX) buffer_rx_t;