Public Method getFreeBufferCapacity

static int getFreeBufferCapacity(byte rxtxBuffer)

Throws:

• InterfaceNotOpenException
• IllegalArgumentException

_INSERT_METHOD_SIGNATURE_HERE_

Parameter	Range	Description
rxtxBuffer	SPI.RXBUFFER or SPI.TXBUFFER	the according buffer

This method is used to get the current number of frames which can be stored in the according buffer. It returns -1 if a wrong input value is selected.

Returns	Description
val	the free capacity of the selected buffer

• The return value is influenced by the transferData method when the master mode is selected.
• Otherwise, this value is influenced by another master that initiates a data transfer when the slave mode is selected.

Example

   SPI.getFreeBufferCapacity(SPI.RXBUFFER);

This method returns the number of available frames that can be stored into the according buffer.