U2C_RESULT U2C_SetClockSynch (
HANDLE hDevice,
BOOL Enable
);

The U2C_SetClockSynch function enables I2C bus clock synchronization.

Clock synchronization (clock stretching) is used in situations where an I2C slave is not able to co-operate with the clock speed provided by the U2C-12 I2C master and needs to slow down an I2C bus. I2C slave holds down the SCL line low and in this way signals the I2C master about a wait state. If I2C bus clock synchronization is enabled, U2C-12 device will wait until I2C slave device releases the SCL line.

Parameters:

	hDevice	Handle to the U2C-12 device.
	Enable	Clock synchronization (clock streching) enable/disable value: 1 corresponds to I2C bus clock synchronization enabled. 0 corresponds to I2C bus clock synchronization disabled.

Return values:

	U2C_SUCCESS	The I2C bus clock synchronization value was successfully set.
	U2C_HARDWARE_NOT_FOUND	U2C-12 device referenced by hDevice handle was not found.

Warning:: I2C bus clock synchronization (clock stretching) is implemented for I2C bus frequences up to 100kHz. See U2C_SetI2cFreq() to learn how to change I2C bus frequency.