Renesas M3T-MR100 unl_cpu Unlock the CPU iunl_cpu Unlock the CPU (handler only)

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unl_cpu Unlock the CPU
iunl_cpu Unlock the CPU (handler only)
[
[[ [ C C L La an ng gu ua ag ge e A AP PI I ] ]] ]
ER ercd = unl_cpu();
ER ercd = iunl_cpu();
z
z P Pa ar ra am me et te er rs s
None
z
z R Re et tu ur rn n P Pa ar ra am me et te er rs s
ER ercd Terminated normally (E_OK)
[
[[ [ A As ss se em mb bl ly y l la an ng gu ua ag ge e A AP PI I ] ]] ]
.include mr100.inc
unl_cpu
iunl_cpu
z
z P Pa ar ra am me et te er rs s
None
z
z R Re eg gi is st te er r c co on nt te en nt ts s a af ft te er r s se er rv vi ic ce e c ca al ll l i is s i is ss su ue ed d
Register name Content after service call is issued
R0 Error code
[
[[ [ E Er rr ro or r c co od de e ] ]] ]
None
[
[[ [ F Fu un nc ct ti io on na al l d de es sc cr ri ip pt ti io on n ] ]] ]
This service call frees the system from a CPU locked state that was set by the loc_cpu or iloc_cpu service call. If the
unl_cpu service call is issued from a dispatching enabled state, task scheduling is performed. If the system was put into a
CPU locked state by invoking iloc_cpu within an interrupt handler, the system must always be placed out of a CPU locked
state by invoking iunl_cpu before it returns from the interrupt handler.
The CPU locked state and the dispatching disabled state are managed independently of each other. Therefore, the system
cannot be freed from a dispatching disabled state by the unl_cpu or iunl_cpu service call unless the ena_dsp service call is
used.
If this service call is to be issued from task context, use unl_cpu; if issued from non-task context, use iunl_cpu.
[
[[ [ E Ex xa am mp pl le e p pr ro og gr ra am m s st ta at te em me en nt t ] ]] ]
<<Example statement in C language>>
#include <itron.h>
#include <kernel.h>
#include “kernel_id.h”
void task()
{
:
unl_cpu();
:
}
<<Example statement in assembly language>>
.include mr100.inc
.GLB task
task: :
unl_cpu
: