#define US_CR_OFF 0x00000000 ///< USART control register offset.
#define US0_CR (*((reg32_t *)(USART0_BASE + US_CR_OFF))) ///< Channel 0 control register address.
#define US1_CR (*((reg32_t *)(USART1_BASE + US_CR_OFF))) ///< Channel 1 control register address.
-#define US_RSTRX 2 ///< Reset receiver. */
+#define US_RSTRX 2 ///< Reset receiver.
#define US_RSTTX 3 ///< Reset transmitter.
#define US_RXEN 4 ///< Receiver enable.
#define US_RXDIS 5 ///< Receiver disable.
#define US_STTTO 11 ///< Start timeout.
#define US_SENDA 12 ///< Send next byte with address bit set.
#define US_RSTIT 13 ///< Reset interations.
-#define US_RTSNAK 14 ///< Reset non acknowledge.
+#define US_RSTNAK 14 ///< Reset non acknowledge.
#define US_RETTO 15 ///< Rearm time out.
#define US_DTREN 16 ///< Data terminal ready enable.
#define US_DTRDIS 17 ///< Data terminal ready disable.