1.42.3.65 FLEXCOMx_TWI_IsBusy Function

C

/* x = FLEXCOM instance number */

/* TWI master mode and slave with interrupt enabled */

bool FLEXCOMx_TWI_IsBusy(void)	

Summary

Returns the Peripheral busy status

Description

TWI master mode

In master mode, this function returns true if the FLEXCOMx TWI module is busy with a transfer. The application can use this function to check if FLEXCOMx TWI module is busy before calling any of the data transfer functions. The library does not allow a data transfer operation if another transfer operation is already in progress.

TWI slave mode

In slave mode, the function returns true as soon as the address match event occurs and returns false after a STOP bit has been detected. The application can use this API to ensure no TWI transfer is in progress.

Precondition

FLEXCOMx_TWI_Initialize must have been called for the associated FLEXCOM instance.

Parameters

None.

Returns

true - Busy

false - Not busy

Example

// wait for the current transfer to complete
while(FLEXCOM0_TWI_IsBusy());

Remarks

None