367     while (0U == (base->S1 & UART_S1_TC_MASK))  in UART_Deinit()
665     status_flag = (uint32_t)base->S1;  in UART_GetStatusFlags()
717         (void)base->S1;  in UART_ClearStatusFlags()
765         while ((0U == (base->S1 & UART_S1_TDRE_MASK)) && (0U != --waitTimes))  in UART_WriteBlocking()
767         while (0U == (base->S1 & UART_S1_TDRE_MASK))  in UART_WriteBlocking()
783     while ((0U == (base->S1 & UART_S1_TC_MASK)) && (0U != --waitTimes))  in UART_WriteBlocking()
785     while (0U == (base->S1 & UART_S1_TC_MASK))  in UART_WriteBlocking()
846         while ((base->S1 & UART_S1_RDRF_MASK) == 0U)  in UART_ReadBlocking()
1136     if ((base->S1 & (uint8_t)kUART_TxDataRegEmptyFlag) != 0U)  in UART_TransferGetSendCount()
1491         while ((base->S1 & UART_S1_RDRF_MASK) != 0U)  in UART_TransferHandleIRQ()
1513         while ((base->S1 & UART_S1_RDRF_MASK) != 0U)  in UART_TransferHandleIRQ()
1535         while ((base->S1 & UART_S1_RDRF_MASK) != 0U)  in UART_TransferHandleIRQ()
1593         while ((UART_S1_IDLE_MASK & base->S1) != 0U)  in UART_TransferHandleIRQ()