source: rtems/bsps/arm/atsam/start/power-clock.c @ 9964895

/*
 * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Dornierstr. 4
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.org/license/LICENSE.
 */

#include <bsp.h>
#include <bsp/power.h>
#include <bsp/irq.h>

#include <libchip/chip.h>

#include <rtems/score/armv7m.h>

void atsam_power_handler_clock_driver(
    const atsam_power_control *control,
    atsam_power_state state
)
{
        volatile ARMV7M_Systick *systick = _ARMV7M_Systick;

        (void) control;

        switch (state) {
                case ATSAM_POWER_ON:
                        systick->csr = ARMV7M_SYSTICK_CSR_ENABLE |
                            ARMV7M_SYSTICK_CSR_TICKINT |
                            ARMV7M_SYSTICK_CSR_CLKSOURCE;
                        break;
                case ATSAM_POWER_OFF:
                        systick->csr = 0;
                        break;
                default:
                        break;
        }
}