/*****************************************************************************
 * Copyright (c) 2019, Nations Technologies Inc.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL NATIONS 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.
 * ****************************************************************************/

/**
 * @file User_Systick_Config.c
 * @author Nations 
 * @version v1.0.1
 *
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */


#include "n32g45x.h"
#include "system_n32g45x.h"
#include "User_Systick_Config.h"
#include <stdio.h>

//uint32_t systick_count;
extern uint32_t g_tim3_count;		// 

/**
 * @brief  Systick Config
 */
void Systick_MS_Config(uint32_t sys_freq)
{
   /* Setup SysTick Timer for 1 msec interrupts  SystemCoreClock */
   if (SysTick_Config(sys_freq / 1000))
   {
      /* Capture error */
      while (1);
   }
}

/**
 * @brief  Systick Disable
 */
void Systick_Disable(void)
{
    SysTick->CTRL &= (~SysTick_CTRL_ENABLE_Msk); 
}


/**
 * @brief  Read User Time Since Last Set
 * @param last time.
 */
uint32_t User_Time_Read(uint32_t time)
{
    uint32_t diff = 0;
    //if(systick_count>=time)
    //{
    //   return systick_count-time;
    //}
    //return(0xFFFFFFFF-time+systick_count);
    if(g_tim3_count >= time) {
       diff = g_tim3_count-time;
    }
    else {
        diff = (0xFFFFFFFF-time+g_tim3_count);
    }
    //printf("diff=%d\r\n", diff);
    return diff;
}

/**
 * @brief  Set The User Time By Current  Value
 * @param set time.
 */
void User_Time_Set(uint32_t* time)
{
    //*time=systick_count;
	  *time = g_tim3_count;
}

/*
*********************************************************************************************************
* 函 数 名: bsp_GetRunTime
* 功能说明: 获取CPU运行时间，单位1ms。最长可以表示 24.85天，如果你的产品连续运行时间超过这个数，则必须考虑溢出问题
* 形    参:  无
* 返 回 值: CPU运行时间，单位1ms
*********************************************************************************************************
*/
uint32_t bsp_GetRunTime(void)
{
    //static uint32_t Interval_Time;
    //User_Time_Set(&Interval_Time);
    //return Interval_Time;
    //return systick_count;
    return g_tim3_count;
}
/*
*********************************************************************************************************
* 函 数 名: bsp_CheckRunTime
* 功能说明: 计算当前运行时间和给定时刻之间的差值。处理了计数器循环。
* 形    参:  _LastTime 上个时刻
* 返 回 值: 当前时间和过去时间的差值，单位1ms
*********************************************************************************************************
*/
uint32_t bsp_CheckRunTime(uint32_t _LastTime) 
{
  uint32_t now_time = bsp_GetRunTime();
  uint32_t time_diff;
  
  if (now_time >= _LastTime) {
    time_diff = now_time - _LastTime;
  }
  else {
    time_diff = 0xFFFFFFFF - _LastTime + now_time;
  }
  return time_diff;
}