f2f0193960
Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
91 lines
3.2 KiB
C
91 lines
3.2 KiB
C
/****************************************************************************
|
|
* arch/arm/src/xmc4/xmc4_idle.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <arch/board/board.h>
|
|
#include <nuttx/config.h>
|
|
|
|
#include <nuttx/arch.h>
|
|
#include <nuttx/board.h>
|
|
|
|
#include "arm_internal.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* Does the board support an IDLE LED to indicate that the board is in the
|
|
* IDLE state?
|
|
*/
|
|
|
|
#if defined(CONFIG_ARCH_LEDS) && defined(LED_IDLE)
|
|
# define BEGIN_IDLE() board_autoled_on(LED_IDLE)
|
|
# define END_IDLE() board_autoled_off(LED_IDLE)
|
|
#else
|
|
# define BEGIN_IDLE()
|
|
# define END_IDLE()
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: up_idle
|
|
*
|
|
* Description:
|
|
* up_idle() is the logic that will be executed when there is no other
|
|
* ready-to-run task. This is processor idle time and will continue until
|
|
* some interrupt occurs to cause a context switch from the idle task.
|
|
*
|
|
* Processing in this state may be processor-specific. e.g., this is where
|
|
* power management operations might be performed.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void up_idle(void)
|
|
{
|
|
#if defined(CONFIG_SUPPRESS_INTERRUPTS) || defined(CONFIG_SUPPRESS_TIMER_INTS)
|
|
/* If the system is idle and there are no timer interrupts, then process
|
|
* "fake" timer interrupts. Hopefully, something will wake up.
|
|
*/
|
|
|
|
nxsched_process_timer();
|
|
#else
|
|
|
|
/* Sleep until an interrupt occurs to save power */
|
|
|
|
BEGIN_IDLE();
|
|
asm("WFI");
|
|
END_IDLE();
|
|
#endif
|
|
}
|