#define USART_CR3_OVRDIS BIT(12)
-#define USART_SR_FLAG_ORE BIT(3)
-#define USART_SR_FLAG_RXNE BIT(5)
-#define USART_SR_FLAG_TXE BIT(7)
+#define USART_ISR_FLAG_ORE BIT(3)
+#define USART_ISR_FLAG_RXNE BIT(5)
+#define USART_ISR_FLAG_TXE BIT(7)
#define USART_BRR_F_MASK GENMASK(7, 0)
#define USART_BRR_M_SHIFT 4