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Reference Manual AFDX / ARINC 664 Application Interface Library
Section 4 – Function Reference: Transmitter Functions
‘FdxCmdTxQueueUpdate’ is used for this Transmit Frame the Buffer Queue will be extended
automatically to a size of two buffers. This is to guarantee consistent frame data on
transmission. This means, that a frame can not be updated by the update function while it is
actually transmitted by the BIU transmitter functionality.
Additionally a Buffer Queue with up to 128 buffers can be defined by user. This Buffer Queue
can be shared by a arbitrary number of transfers. The number must be defined at allocation
time of the buffer queue. The administration of assignement of transfers and buffer queues
works internally in the boards Target Software.
With a special instruction inside the Transmit Queue a Sub Transmit Queue can be called. This
Sub Transmit Queue has the same properties as the main Transmit Queue. After execution of
this Sub Transmit Queue processing will return to the next instruciotn or transmission after the
call instruction.