stm32/usbd_cdc_interface: Make CDC TX/RX buffer sizes configurable.

5 years ago · 788e7f50f2
1 changed files with 4 additions and 0 deletions
--- a/ports/stm32/usbd_cdc_interface.h
+++ b/ports/stm32/usbd_cdc_interface.h
@ -31,8 +31,12 @@
  ******************************************************************************
  */

+#ifndef USBD_CDC_RX_DATA_SIZE
 #define USBD_CDC_RX_DATA_SIZE (1024) // this must be 2 or greater, and a power of 2
+#endif
+#ifndef USBD_CDC_TX_DATA_SIZE
 #define USBD_CDC_TX_DATA_SIZE (1024) // I think this can be any value (was 2048)
+#endif

 // Values for connect_state
 #define USBD_CDC_CONNECT_STATE_DISCONNECTED (0)