/**
  ******************************************************************************
  * @file    TIM4/TIM4_TimeBase/main.c
  * @author  MCD Application Team
  * @version V1.5.0
  * @date    13-May-2011
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * © COPYRIGHT 2011 STMicroelectronics


  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "stm8l15x.h"
#include "stm8_eval.h"
#define TIM4_PERIOD       124
__IO uint32_t TimingDelay;
/* Private function prototypes -----------------------------------------------*/
static void CLK_Config(void);
static void TIM4_Config(void);
void Delay(__IO uint32_t nTime);
void TimingDelay_Decrement(void);
void main(void)
{
   /* CLK configuration -------------------------------------------*/
  CLK_Config();
  /* Initialize Leds mounted on STM8L1526-EVAL board */
  STM_EVAL_LEDInit(LED1);
  STM_EVAL_LEDInit(LED2);
  STM_EVAL_LEDInit(LED3);
  STM_EVAL_LEDInit(LED4);
  /* Turn on LED1 and LED3 */
  STM_EVAL_LEDOn(LED1);
  STM_EVAL_LEDOn(LED3);
   /* TIM4 configuration -------------------------------------------*/
  TIM4_Config();
 
  while (1)
  {
    /* Toggle LED2 and LED4 */
    STM_EVAL_LEDToggle(LED2);
    STM_EVAL_LEDToggle(LED4);
    /* Insert 50 ms delay */
    Delay(50);
    /* Toggle LED1 and LED3 */
    STM_EVAL_LEDToggle(LED1);
    STM_EVAL_LEDToggle(LED3);
    /* Insert 100 ms delay */
    Delay(100);
  }
}
static void CLK_Config(void)
{
 
  CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);
  CLK_SYSCLKSourceSwitchCmd(ENABLE);
  CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSE);
  while (CLK_GetSYSCLKSource() != CLK_SYSCLKSource_HSE)
  {}
  CLK_PeripheralClockConfig(CLK_Peripheral_TIM4, ENABLE);
}
static void TIM4_Config(void)
{
  /
  /* Time base configuration */
  TIM4_TimeBaseInit(TIM4_Prescaler_128, TIM4_PERIOD);
  /* Clear TIM4 update flag */
  TIM4_ClearFlag(TIM4_FLAG_Update);
  /* Enable update interrupt */
  TIM4_ITConfig(TIM4_IT_Update, ENABLE);
  /* enable interrupts */
  enableInterrupts();
  /* Enable TIM4 */
  TIM4_Cmd(ENABLE);
}
void Delay(__IO uint32_t nTime)
{
  TimingDelay = nTime;
  while (TimingDelay != 0);
}

void TimingDelay_Decrement(void)
{
  if (TimingDelay != 0x00)
  {
    TimingDelay--;
  }
}
这个函数干什么用的 ?

在TIME的中断例程里每一毫秒调用一次TimingDelay_Decrement（）
就可以达到delay的目的，

这个函数原型在那啊 谢谢

这个函数原型在那啊 谢谢

你指的原型是什么意思?
你贴出来的代码既有声明，也有定义啊。?
TimingDelay_Decrement(void)的作用很简单，如果全局变量TimingDelay的值不为0，就减一，
而在Delay（）里面是去判断TimingDelay 是不是等于0 ，等于0就结束等待，
所以你用delay的时候，比如delay（50），TimingDelay 的值被初始化为50，肯定是没一毫秒调用一次TimingDelay_Decrement(void)起做TimingDelay的自减，直到0为止结束的delay，不知道你清楚了没？
你可以去看看你的中断例程。。。

下面的代码是用来做延时中断的。这样能够将延时更精确。要比for(;;)的精度高，而且也不用计算延时的时间。
void TimingDelay_Decrement(void)
{
  if (TimingDelay != 0x00)
  {
    TimingDelay--;
  }
}

清楚了  谢了