/*
    ChibiOS - Copyright (C) 2006,2007,2008,2009,2010,2011,2012,2013,2014,
              2015,2016,2017,2018,2019,2020,2021 Giovanni Di Sirio.

    This file is part of ChibiOS.

    ChibiOS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation version 3 of the License.

    ChibiOS is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * @file    ARMvx-M-SB/chcore.c
 * @brief   ARMvx-M-SB port code.
 *
 * @addtogroup ARMVXM_SB_CORE
 * @{
 */

#include "ch.h"

/*===========================================================================*/
/* Module local definitions.                                                 */
/*===========================================================================*/

/*===========================================================================*/
/* Module exported variables.                                                */
/*===========================================================================*/

/*===========================================================================*/
/* Module local types.                                                       */
/*===========================================================================*/

/*===========================================================================*/
/* Module local variables.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Module local functions.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Module interrupt handlers.                                                */
/*===========================================================================*/


CH_IRQ_HANDLER(__sb_vector0) {

  CH_IRQ_PROLOGUE();

  chSysLockFromISR();
  chSysTimerHandlerI();
  chSysUnlockFromISR();

  CH_IRQ_EPILOGUE();
}

/*===========================================================================*/
/* Module exported functions.                                                */
/*===========================================================================*/

/**
 * @brief   Port-related initialization code.
 *
 * @param[in, out] oip  pointer to the @p os_instance_t structure
 *
 * @notapi
 */
void port_init(os_instance_t *oip) {

  (void)oip;

  /* Starting in a known IRQ configuration.*/
  port_disable();

  /* Enabling alarm VRQ.*/
  __sb_vrq_seten(1U << 0);
  sbSetAlarm(sbGetFrequency() / CH_CFG_ST_FREQUENCY, true);
}

/** @} */