stm32输出互补方波

要在STM32上输出互补方波，可以使用定时器和通道来实现。以下是一个基本的代码示例：

#include "stm32f4xx.h"

void TIM_Config(void);

int main(void)
{
  TIM_Config();
  while (1);
}

void TIM_Config(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
  TIM_OCInitTypeDef TIM_OCInitStructure;

  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_TIM2);
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource6, GPIO_AF_TIM2);

  TIM_TimeBaseStructure.TIM_Period = 999; // 1 kHz frequency
  TIM_TimeBaseStructure.TIM_Prescaler = 83; // 84 MHz / 84 = 1 MHz timer clock
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

  TIM_OCStructInit(&TIM_OCInitStructure);
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OCInitStructure.TIM_Pulse = 499; // 50% duty cycle
  TIM_OC1Init(TIM2, &TIM_OCInitStructure);

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
  TIM_OCInitStructure.TIM_Pulse = 499; // 50% duty cycle
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);

  TIM_Cmd(TIM2, ENABLE);
}

这个例子中，我们使用了定时器2，并将PA5和PA6引脚配置为复用功能，以便通过定时器来控制它们的输出。我们将定时器配置为1 MHz，并且设置计数器溢出值为999，这样我们可以得到1 kHz的频率。我们还设置了定时器通道1和通道2的输出比较模式为PWM1，并将输出极性分别设置为高和低。最后，我们启用定时器以开始输出互补方波。

请注意，这只是一个基本的代码示例，你需要根据你的具体需求进行调整。