+#if CPU_ARM
+ typedef uint32_t serstatus_t;
+
+ /* Software errors */
+ #define SERRF_RXFIFOOVERRUN BV(0) /**< Rx FIFO buffer overrun */
+ #define SERRF_RXTIMEOUT BV(1) /**< Receive timeout */
+ #define SERRF_TXTIMEOUT BV(2) /**< Transmit timeout */
+
+ /*
+ * Hardware errors.
+ * These flags map directly to the ARM USART Channel Status Register (US_CSR).
+ */
+ #define SERRF_RXSROVERRUN BV(5) /**< Rx shift register overrun */
+ #define SERRF_FRAMEERROR BV(6) /**< Stop bit missing */
+ #define SERRF_PARITYERROR BV(7) /**< Parity error */
+ #define SERRF_NOISEERROR 0 /**< Unsupported */
+