* arch/arm/src/csk6/csk6_timer.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/timers/arch_timer.h>
#include "arm_internal.h"
#include "systick.h"
#include "nvic.h"
* Public Functions
****************************************************************************/
#define SYSTICK_RELOAD ((CSK6_SYSTICK_CLOCK / CLK_TCK) - 1)
* Function: up_timer_initialize
*
* Description:
* This function is called during start-up to initialize
* the timer hardware.
*
****************************************************************************/
void up_timer_initialize(void)
{
* if RELOAD is zero, set CTRL is not useful
*/
putreg32(SYSTICK_RELOAD, NVIC_SYSTICK_RELOAD);
up_timer_set_lowerhalf(systick_initialize(true, CSK6_SYSTICK_CLOCK, -1));
}