+/*!
+ * \name Overridable SPI hooks
+ *
+ * These can be redefined in hw.h to implement
+ * special bus policies such as slave select pin handling, etc.
+ *
+ * \{
+ */
+#ifndef SER_SPI_BUS_TXINIT
+ /*!
+ * \def SER_SPI_BUS_TXINIT
+ *
+ * Default TXINIT macro - invoked in spi_init()
+ * The default is no action.
+ */
+ #define SER_SPI_BUS_TXINIT
+#endif
+
+#ifndef SER_SPI_BUS_TXCLOSE
+ /*!
+ * \def SER_SPI_BUS_TXCLOSE
+ *
+ * Invoked after the last character has been transmitted.
+ * The default is no action.
+ */
+ #define SER_SPI_BUS_TXCLOSE
+#endif
+/*\}*/
+
+