/**
  ******************************************************************************
  * @file    tim.c
  * @brief   This file provides code for the configuration
  *          of the TIM instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/*----------------------------------------------------------------------------
 * Copyright (c) Huawei Technologies Co., Ltd. 2021-2021. All rights reserved.
 * Description: Timer Driver Initialization
 * Author: Huawei LiteOS Team
 * Create: 2021-02-03
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * --------------------------------------------------------------------------- */

/* Includes ------------------------------------------------------------------*/
#include "tim.h"
#include "sys_init.h"

/* USER CODE BEGIN 0 */
#include "los_hwi.h"

#define TIMER3_RELOAD 50000
#define TIMER3        3
/* USER CODE END 0 */

TIM_HandleTypeDef htim3;

/* TIM3 init function */
void MX_TIM3_Init(void)
{
  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};

  htim3.Instance = TIM3;
  htim3.Init.Prescaler = 12000 - 1;
  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim3.Init.Period = 50000 - 1;
  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }

}

void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM3)
  {
  /* USER CODE BEGIN TIM3_MspInit 0 */

  /* USER CODE END TIM3_MspInit 0 */
    /* TIM3 clock enable */
    __HAL_RCC_TIM3_CLK_ENABLE();
  /* USER CODE BEGIN TIM3_MspInit 1 */

  /* USER CODE END TIM3_MspInit 1 */
  }
}

void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM3)
  {
  /* USER CODE BEGIN TIM3_MspDeInit 0 */

  /* USER CODE END TIM3_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_TIM3_CLK_DISABLE();
  /* USER CODE BEGIN TIM3_MspDeInit 1 */

  /* USER CODE END TIM3_MspDeInit 1 */
  }
}

/* *
 * @brief This function handles TIM3 global interrupt.
 */
void TIM3_IRQHandler(void)
{
    /* USER CODE BEGIN TIM3_IRQn 0 */

    /* USER CODE END TIM3_IRQn 0 */
    HAL_TIM_IRQHandler(&htim3);
    /* USER CODE BEGIN TIM3_IRQn 1 */

    /* USER CODE END TIM3_IRQn 1 */
}

/* USER CODE BEGIN 1 */
UINT64 Timer3GetCycle(VOID)
{
    static UINT64 bacCycle;
    static UINT64 cycleTimes;
    UINT64 swCycles = htim3.Instance->CNT;

    if (swCycles < bacCycle) {
        cycleTimes++;
    }

    bacCycle = swCycles;
    return swCycles + cycleTimes * TIMER3_RELOAD;
}

VOID TimInit(VOID)
{
    MX_TIM3_Init();
}

VOID TimerHwiCreate(VOID)
{
    UINT32 ret;

    ret = LOS_HwiCreate(TIM_IRQ, 0, 0, TIM3_IRQHandler, 0); // 16: cortex-m irq num shift
    if (ret != 0) {
        printf("ret of TIM3 LOS_HwiCreate = %#x\n", ret);
        return;
    }
    HAL_TIM_Base_Start_IT(&htim3);
}

UINT64 GetTimerCycles(VOID)
{
    static UINT64 bacCycle;
    static UINT64 cycleTimes;
    UINT64 swCycles = htim3.Instance->CNT;
    UINT64 cycles = 0;

    if (swCycles < bacCycle) {
        cycleTimes++;
    }
    bacCycle = swCycles;
    cycles = swCycles + cycleTimes * TIMER3_RELOAD;

    return cycles;
}

TimControllerOps g_cpupTimerOps = {
    .timInit = TimInit,
    .timHwiCreate = TimerHwiCreate,
    .timGetTimerCycles = GetTimerCycles
};
/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
