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vrst_vdtq Clear Short data queue area
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ER ercd = vrst_vdtq( ID vdtqid );
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ID vdtqid Short data queue ID to be cleared
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ER ercd Terminated normally (E_OK)
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.include mr100.inc
vrst_vdtq VDTQID
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VDTQID Short data queue ID to be cleared
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Register name Content after service call is issued
R0 Error code
R2 Short data queue ID to be cleared
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This service call clears the data stored in the Short data queue indicated by vdtqid. If the Short data queue area has no more
areas to be added and tasks are enqueued in a data transmission waiting queue, all of the tasks enqueued in the data trans-
mission waiting queue are released from WAITING state. Furthermore, the error code EV_RST is returned to the tasks that
have been released from WAITING state.
Even when the number of Short data queues defined is 0, all of the tasks enqueued in a data transmission waiting queue are
released from WAITING state.
This service call can be issued only from task context. It cannot be issued from non-task context.