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Home > C/C++ API > SPI Bus Interface > SPI Master Interface > SPI Master Functions > DlnSpiMasterSetCpol() Function

DlnSpiMasterSetCpol() Function

The DlnSpiMasterSetCpol() function sets the clock polarity value.

Syntax
C/C++
DLN_RESULT DlnSpiMasterSetCpol(
    HDLN handle, 
    uint8_t port, 
    uint8_t cpol
);
Parameters
handle

A handle to the DLN-series adapter.

port

A number of the SPI master port.

cpol

Clock polarity value. Possible values: 0 or 1.

Return Value
DLN_RES_SUCCESS (0x00)

The function successfully configured the SPI master CPOL value.

DLN_RES_INVALID_PORT_NUMBER (0xA8)

The port number is not valid. Use the DlnSpiMasterGetPortCount() [1] function to find the maximum possible port number.

Remarks

By default, SPI master ports of DLN adapters have CPOL=0 configuration.

The DlnSpiMasterSetCpol() function is defined in the dln_spi_master.h file.

Links:
[1] http://dlnware.com/dll/DlnSpiMasterGetPortCount