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DlnSpiSlaveGetMode() Function

The DlnSpiSlaveGetMode() function retrieves the current transmission parameters (CPOL and CPHA) for the specified SPI slave port. For details, read Clock Phase and Polarity.

Syntax
C/C++
DLN_RESULT DlnSpiSlaveGetMode(
   HDLN handle,
   uint8_t port,
   uint8_t* mode
);
Parameters
handle

A handle to the DLN-series adapter.

port

A number of the SPI slave port.

mode

A pointer to an unsigned 8 bit integer that receives the SPI mode value. The bits 0 and 1 of this value correspond to CPOL and CPHA parameters respectively. The rest of the bits are not used.

BitValueDescriptionConstant

0

0

CPOL=0

DLN_SPI_SLAVE_CPOL_0

0

1

CPOL=1

DLN_SPI_SLAVE_CPOL_1

1

0

CPHA=0

DLN_SPI_SLAVE_CPHA_0

1

1

CPHA=1

DLN_SPI_SLAVE_CPHA_1

Return Value
DLN_RES_SUCCESS (0x00)

The function successfully configured the slave port mode.

DLN_RES_INVALID_PORT_NUMBER (0xA8)

The port number is not valid. Use the DlnSpiSlaveGetPortCount() function to find the maximum possible port number.

Remarks

The DlnSpiSlaveGetMode() function is defined in the dln_spi_slave.h file.

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