UART RX FIFO status.

General Description

Macros to check UART RX FIFO status returned by Cy_SCB_UART_GetRxFifoStatus function or assign mask for Cy_SCB_UART_ClearRxFifoStatus function.

Each UART RX FIFO status is encoded in a separate bit, therefore multiple bits may be set to indicate the current status.

Macros
#define	CY_SCB_UART_RX_TRIGGER   (SCB_INTR_RX_TRIGGER_Msk)
	The number of entries in the RX FIFO is more than the RX FIFO trigger level value.
#define	CY_SCB_UART_RX_NOT_EMPTY   (SCB_INTR_RX_NOT_EMPTY_Msk)
	The RX FIFO is not empty, there is data to read.
#define	CY_SCB_UART_RX_FULL   (SCB_INTR_RX_FULL_Msk)
	The RX FIFO is full, there is no more space for additional data, and any additional data will be dropped.
#define	CY_SCB_UART_RX_OVERFLOW   (SCB_INTR_RX_OVERFLOW_Msk)
	The RX FIFO was full and there was an attempt to write to it. More...
#define	CY_SCB_UART_RX_UNDERFLOW   (SCB_INTR_RX_UNDERFLOW_Msk)
	An attempt to read from an empty RX FIFO.
#define	CY_SCB_UART_RX_ERR_FRAME   (SCB_INTR_RX_FRAME_ERROR_Msk)
	The RX FIFO detected a frame error, either a stop or stop-bit error.
#define	CY_SCB_UART_RX_ERR_PARITY   (SCB_INTR_RX_PARITY_ERROR_Msk)
	The RX FIFO detected a parity error.
#define	CY_SCB_UART_RX_BREAK_DETECT   (SCB_INTR_RX_BREAK_DETECT_Msk)
	The RX FIFO detected a break transmission from the transmitter.

Macro Definition Documentation

CY_SCB_UART_RX_OVERFLOW

#define CY_SCB_UART_RX_OVERFLOW   (SCB_INTR_RX_OVERFLOW_Msk)

The RX FIFO was full and there was an attempt to write to it.

That additional data was dropped.