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SPIMaster_SetBusSpeed Function

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Header: #include <applibs/spi.h>

Sets the SPI bus speed for operations on an SPI master interface.

int SPIMaster_SetBusSpeed(int fd, uint32_t speedInHz);

Parameters

  • fd The file descriptor for the SPI master interface.

  • speedInHz The maximum speed for transfers on this interface, in Hz. Not all speeds are supported on all devices. The actual speed used by the interface may be lower than this value.

Return value

Returns 0 for success, or -1 for failure, in which case errno will be set to the error value.

Application manifest requirements

To access individual SPI interfaces, your application must identify them in the SpiMaster field of the application manifest.