没什么GPIOC没有波形显示

核子霹雳

TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure; //定时器初始化

TIM_OCInitTypeDef  TIM_OCInitStructure; //本文件内定义一个初始TIM结构

TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

u16 CCR1_Val = 0x7;

u16 CCR2_Val = 0x5;

u16 CCR3_Val = 0x3;

u16 CCR4_Val = 0x1; 

ErrorStatus HSEStartUpStatus;

static vu32 TimingDelay = 0;

  

void RCC_Configuration(void);

void GPIO_Configuration(void);

void NVIC_Configuration(void);

    

int main(void)

{

  /* System Clocks Configuration */

  RCC_Configuration();

  /* NVIC configuration */

  NVIC_Configuration();

  /* Configure the systick */    

  SysTick_Config();

  /* Initialize the LCD */

  /* GPIO Configuration */

  GPIO_Configuration();

  TIM_DeInit(TIM1);  

  TIM_TimeBaseStructure.TIM_Prescaler = 0x0;

  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; 

  TIM_TimeBaseStructure.TIM_Period = 10;

  TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;

  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0; 

  TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

  /* Channel 1, 2,3 and 4 Configuration in PWM mode */

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; 

  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;              

  TIM_OCInitStructure.TIM_Pulse = CCR1_Val;

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; 

  TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;

  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; 

  TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;      

  

  TIM_OC1Init(TIM1,&TIM_OCInitStructure); 

  TIM_OCInitStructure.TIM_Pulse = CCR2_Val;

  TIM_OC2Init(TIM1,&TIM_OCInitStructure); 

  TIM_OCInitStructure.TIM_Pulse = CCR3_Val;

  TIM_OC3Init(TIM1,&TIM_OCInitStructure);

   

  TIM_OCInitStructure.TIM_Pulse = CCR4_Val;

  TIM_OC4Init(TIM1,&TIM_OCInitStructure);

  TIM_Cmd(TIM1,ENABLE);   

  TIM_CtrlPWMOutputs(TIM1,ENABLE);  

  

  while(1)

  {

  }    

}

void RCC_Configuration(void)

{   

  /* 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)

  {

    /* HCLK = SYSCLK */

    RCC_HCLKConfig(RCC_SYSCLK_Div1); 

  

    /* PCLK2 = HCLK */

    RCC_PCLK2Config(RCC_HCLK_Div1); 

    /* PCLK1 = HCLK/2 */

    RCC_PCLK1Config(RCC_HCLK_Div2);

    /* Flash 2 wait state */

    FLASH_SetLatency(FLASH_Latency_2);

    /* Enable Prefetch Buffer */

    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

    /* 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)

    {

    }

  }

  /* TIM1, GPIOA and GPIOB clock enable */

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1  | RCC_APB2Periph_GPIOC |

                         RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOA, ENABLE);

}

void GPIO_Configuration(void)

{

  GPIO_InitTypeDef GPIO_InitStructure;

/* GPIOA Configuration: Channel 1, 2, 3 and 4 Output */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9| GPIO_Pin_10 | GPIO_Pin_11;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; 

GPIO_Init(GPIOC, &GPIO_InitStructure);

/* GPIOB Configuration: Channel 1N, 2N and 3N Output */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;

GPIO_Init(GPIOB, &GPIO_InitStructure); 

}

void NVIC_Configuration(void)

{

#ifdef  VECT_TAB_RAM  

  /* Set the Vector Table base location at 0x20000000 */ 

  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); 

#else  /* VECT_TAB_FLASH  */

  /* Set the Vector Table base location at 0x08000000 */ 

  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);   

#endif

}

#ifdef  DEBUG

void assert_failed(u8* file, u32 line)

{ 

  /* User can add his own implementation to report the file name and line number,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  while(1)

  {

  }

}

#endif

 void SysTick_Config(void)

{

  /* Configure HCLK clock as SysTick clock source */

  SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);

 

  /* SysTick interrupt each 100 Hz with HCLK equal to 72MHz */

  SysTick_SetReload(720000);

  /* Enable the SysTick Interrupt */

  SysTick_ITConfig(ENABLE);

}

void Delay(u32 nCount)

{

  TimingDelay = nCount;

  /* Enable the SysTick Counter */

  SysTick_CounterCmd(SysTick_Counter_Enable);

  

  while(TimingDelay != 0)

  {

  }

  /* Disable the SysTick Counter */

  SysTick_CounterCmd(SysTick_Counter_Disable);

  /* Clear the SysTick Counter */

  SysTick_CounterCmd(SysTick_Counter_Clear);

}

void Decrement_TimingDelay(void)

{

  if (TimingDelay != 0x00)

  {

    TimingDelay--;

  }

}

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