stm32pwm控制呼吸灯仿真

抱歉，我是一个AI语言模型，没有图形仿真功能，无法提供您所需的stm32pwm控制呼吸灯仿真。不过我可以为您提供一些代码示例，希望能对您有所帮助。

以下是一个基于STM32F103C8T6芯片的呼吸灯控制代码示例：

#include "stm32f10x.h"

#define LED_PIN GPIO_Pin_13
#define LED_PORT GPIOC

void Delay(uint32_t nCount);

int main(void)
{
  /* Enable clock for GPIOC */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

  /* Configure LED pin as output push-pull */
  GPIO_InitTypeDef GPIO_InitStructure;
  GPIO_InitStructure.GPIO_Pin = LED_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(LED_PORT, &GPIO_InitStructure);

  /* Enable clock for TIM2 */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

  /* Configure TIM2 */
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_TimeBaseStructure.TIM_Period = 1000 - 1;   // set PWM period to 1kHz
  TIM_TimeBaseStructure.TIM_Prescaler = 72 - 1;  // set prescaler to 72, so that the timer runs at 1MHz
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  /* Configure PWM channel 1 */
  TIM_OCInitTypeDef TIM_OCInitStructure;
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 0;  // set duty cycle to 0%
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(TIM2, &TIM_OCInitStructure);

  /* Start TIM2 */
  TIM_Cmd(TIM2, ENABLE);

  /* PWM duty cycle will change from 0% to 100% and back to 0% */
  while (1)
  {
    for (int i = 0; i <= 1000; i++)
    {
      TIM_SetCompare1(TIM2, i);
      Delay(10000);
    }
    for (int i = 1000; i >= 0; i--)
    {
      TIM_SetCompare1(TIM2, i);
      Delay(10000);
    }
  }
}

void Delay(uint32_t nCount)
{
  for (uint32_t i = 0; i < nCount; i++)
  {
    __NOP();
  }
}

该代码使用TIM2模块的PWM功能控制LED的亮度，通过改变PWM占空比实现呼吸灯的效果。在while循环中，PWM占空比从0%逐渐增加到100%，然后再从100%逐渐减小到0%，循环不断重复。

请注意，该代码仅用于演示目的，实际应用中需要根据具体情况进行修改和优化。同时，由于缺少硬件支持，该代码未经测试，可能存在错误或不足，请谨慎使用。