Renesas M3T-MR100 Instrukcja Użytkownika Pobierz pdf (Strona 209)

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This service call returns various statuses of the Short data queue indicated by vdtqid.

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stskid

Returned to stskid is the ID number of the task at the top of a transmission waiting queue (the next task to be de-

queued). If no tasks are kept waiting, TSK_NONE is returned.

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wtskid

Returned to wtskid is the ID number of the task at the top of a reception waiting queue (the next task to be de-

queued). If no tasks are kept waiting, TSK_NONE is returned.

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sdtqcnt

Returned to sdtqcnt is the number of data bytes stored in the Short data queue area.

If this service call is to be issued from task context, use ref_dtq; if issued from non-task context, use iref_dtq.

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<<Example statement in C language>>

#include <itron.h>

#include <kernel.h>

#include “kernel_id.h”

void task()

{

T_RDTQ rdtq;

ER ercd;

ercd = vref_dtq( ID_DTQ1, &rdtq );

}

<<Example statement in assembly language>>

.include mr100.inc

_ refdtq: .blkb 8

.GLB task

task:

PUSH.W R2

PUSH.L A1

vref_dtq #ID_DTQ1,#_refdtq

1 2 ... 204 205 206 207 208 209 210 211 212 213 214 ... 303 304

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Renesas M3T-MR100 Instrukcja Użytkownika Strona 209