#ifdef __cplusplus
extern "C"
{
#endif

#include "timer.h"
#include "nvic.h"

void Timer_InitBase(TIM_TypeDef *TIMx, uint32_t Time_us)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

    if (TIMx == TIM2)
    {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /* enable clock */
        TIM2_NVIC_Configuration();                           // enable interruptation
    }
    else if (TIMx == TIM3)
    {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); /* enable clock */
        TIM3_NVIC_Configuration();                           // enable interruptation
    }
    else if (TIMx == TIM4)
    {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); /* enable clock */
        TIM4_NVIC_Configuration();                           // enable interruptation
    }
    else if (TIMx == TIM5)
    {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE); /* enable clock */
        TIM5_NVIC_Configuration();                           // enable interruptation
    }
    else if (TIMx == TIM6)
    {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE); /* enable clock */
        TIM6_NVIC_Configuration();                           // enable interruptation
    }
    else if (TIMx == TIM7)
    {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE); /* enable clock */
        TIM7_NVIC_Configuration();                           // enable interruptation
    }
    TIM_DeInit(TIMx);
    TIM_TimeBaseStructure.TIM_Period = Time_us - 1;          /* the value of auto reload register  */
    TIM_TimeBaseStructure.TIM_Prescaler = (72 - 1);          /* prescler : 72M/72 */

        /* ClockDivision*/
    if (TIMx == TIM3 || TIMx == TIM4)
    {
        TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV4;
    }
    else
    {
        TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    }

    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  /* count upwards */
    TIM_TimeBaseInit(TIMx, &TIM_TimeBaseStructure);
    TIM_ClearFlag(TIMx, TIM_FLAG_Update);                        /* clear interrupt flags */
    TIM_ITConfig(TIMx, TIM_IT_Update, ENABLE);
    TIM_Cmd(TIMx, ENABLE);
}

#ifdef __cplusplus
}
#endif