TIM_TimeBaseInitTypeDef TIM_InitStructure;
TIM_OCInitTypeDef TIM_OCConfig;
TIM_BDTRInitTypeDef bdtr;

RCC->APB1ENR |= RCC_APB1ENR_TIM3EN | RCC_APB1ENR_TIM4EN | RCC_APB1ENR_TIM2EN;//
RCC->APB2ENR |= RCC_APB2ENR_TIM1EN;//TIM1


GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_0 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_1 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);


TIM_TimeBaseStructInit(&TIM_InitStructure);
TIM_InitStructure.TIM_Prescaler = 1000-1;
TIM_InitStructure.TIM_Period = 1;
TIM_TimeBaseInit(TIM1, &TIM_InitStructure);


TIM_BDTRStructInit(&bdtr);
bdtr.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
TIM_BDTRConfig(TIM1, &bdtr);

TIM_OCStructInit(&TIM_OCConfig);
TIM_OCConfig.TIM_OCMode = TIM_OCMode_Toggle;
TIM_OCConfig.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC1Init(TIM1, &TIM_OCConfig);

TIM_Cmd(TIM1, ENABLE);

ErrorStatus HSEStartUpStatus;

/* RCC system reset(for debug purpose) */
RCC_DeInit();

/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);

/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();

if (HSEStartUpStatus == SUCCESS)
{
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{}

/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */
while (RCC_GetSYSCLKSource() != 0x08)
{}
}

/* TIM2 and TIM3 clocks enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 , ENABLE);

/* Enable GPIOA, GPIOC, ADC1 , AFIO and TIM1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_TIM1 | RCC_APB2Periph_AFIO | RCC_APB2ENR_AFIOEN, ENABLE);

/* Interrupt Configuration */
InterruptConfig();

  TIM_InitStructure.TIM_Prescaler = 1000-2;  
  TIM_InitStructure.TIM_Period = 1;