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I2CMaster_SetBusSpeed Function

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Header: #include <applibs/i2c.h>

Sets the I2C bus speed for operations on the I2C master interface.

Note

Not all speeds are supported on all Azure Sphere devices. See Using I2C for details.

int I2CMaster_SetBusSpeed(int fd, uint32_t speedInHz);

Parameters

  • fd The file descriptor for the I2C interface.

  • speedInHz The requested bus speed, in Hz.

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 an I2c interface, your application must identify it in the I2cMaster field of the application manifest.