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C

/* x = SERCOM instance number */

/* Non-blocking mode */

bool SERCOMx_USART_ReadIsBusy( void )

Summary

Returns the read request status associated with the given USART peripheral instance

Description

This function returns the read request status associated with the given USART peripheral instance. It can be used to check the completion status of the SERCOMx_USART_Read() function when the library is configured for interrupt (non-blocking) mode. In that, the function can be used as an alternative to using a callback function to check for completion.

Precondition

SERCOMx_USART_Initialize must have been called for the associated USART instance.

Parameters

None.

Returns

true - USART is busy in processing the previous read request

false - USART is free and ready to accept the new read request

Example

if(SERCOM0_USART_ReadIsBusy() == true)
{
    //USART is currently processing the previous read request.
    //Wait to submit new request.
}

Remarks

None