/// [bytes] Size of the inbound FIFO buffer for port 1.
#define CONFIG_UART1_RXBUFSIZE 32
+
+/// [bytes] Size of the outbound FIFO buffer for SPI port (AVR only)
+#define CONFIG_SPI_TXBUFSIZE 32
+
+/// [bytes] Size of the inbound FIFO buffer for SPI port (AVR only)
+#define CONFIG_SPI_RXBUFSIZE 32
+
/// [bytes] Size of the outbound FIFO buffer for SPI port 0.
#define CONFIG_SPI0_TXBUFSIZE 32