PSOC E8XXGP Device Support Library

| PSOC E8XXGP Device Support Library

Macros
SPI Transfer Status
PDL API Reference » SCB (Serial Communication Block) » SPI (SCB) » Macros

## General Description

Macros to check current SPI transfer status returned by Cy_SCB_SPI_GetTransferStatus function.

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

## Macros
#define | CY_SCB_SPI_TRANSFER_ACTIVE (0x01UL)
| Transfer operation started by Cy_SCB_SPI_Transfer is in progress.
#define | CY_SCB_SPI_TRANSFER_IN_FIFO (0x02UL)
| All data elements specified by Cy_SCB_SPI_Transfer for transmission have been loaded into the TX FIFO.
#define | CY_SCB_SPI_SLAVE_TRANSFER_ERR (SCB_INTR_S_SPI_BUS_ERROR_Msk)
| The slave was deselected at the wrong time.
#define | CY_SCB_SPI_TRANSFER_OVERFLOW (SCB_INTR_RX_OVERFLOW_Msk)
| RX FIFO was full and there was an attempt to write to it. More...
#define | CY_SCB_SPI_TRANSFER_UNDERFLOW (SCB_INTR_TX_UNDERFLOW_Msk)
| Applicable only for the slave mode. More...

## Macro Definition Documentation

## ◆ CY_SCB_SPI_TRANSFER_OVERFLOW

#define CY_SCB_SPI_TRANSFER_OVERFLOW (SCB_INTR_RX_OVERFLOW_Msk)

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

This additional data was dropped.

## ◆ CY_SCB_SPI_TRANSFER_UNDERFLOW

#define CY_SCB_SPI_TRANSFER_UNDERFLOW (SCB_INTR_TX_UNDERFLOW_Msk)

Applicable only for the slave mode.

The master tried to read more data elements than available in the TX FIFO.