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|
SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
brief: |
Indicates if the current ${/glossary/clock-tick:/term} counter is before the
ticks.
copyrights:
- Copyright (C) 2014, 2021 embedded brains GmbH (http://www.embedded-brains.de)
definition:
default:
attributes: null
body: |
return (${/c/if/int32_t:/name}) ( ${.:/params[0]/name} - ${/score/watchdog/if/ticks-since-boot:/name} ) > 0;
params:
- ${../../type/if/interval:/name} ${.:/params[0]/name}
return: ${/c/if/bool:/name}
variants: []
description: null
enabled-by: true
index-entries: []
interface-type: function
links:
- role: interface-placement
uid: header
- role: interface-ingroup
uid: group
- role: constraint
uid: /constraint/directive-not-pre-qualified
- role: constraint
uid: /constraint/directive-ctx-any
- role: constraint
uid: /constraint/directive-no-preempt
- role: constraint
uid: /constraint/clock-driver
name: rtems_clock_tick_before
notes: |
This directive can be used to write busy loops with a timeout.
.. code-block:: c
:linenos:
status busy( void )
{
rtems_interval timeout;
timeout = rtems_clock_tick_later_usec( 10000 );
do {
if ( ok() ) {
return success;
}
} while ( rtems_clock_tick_before( timeout ) );
return timeout;
}
params:
- description: |
is the ticks value to check.
dir: null
name: ticks
return:
return: |
Returns true, if current ${/glossary/clock-tick:/term} counter indicates a
time before the time in ticks, otherwise returns false.
return-values: []
type: interface
|
