如何stm32互补输出pwm带死区

在STM32中，可以使用高级定时器（TIM1、TIM8等）来实现互补输出PWM带死区。以下是一些基本步骤：

1. 配置定时器为互补模式并启用死区

TIM_HandleTypeDef htim1;  // 定时器句柄

// 配置定时器为互补模式
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 65535;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
htim1.Init.AutoPreload = TIM_AUTOPRELOAD_DISABLE;

// 启用互补输出模式和死区
TIM_OC_InitTypeDef sConfigOC;
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = 32768;  // 占空比50%
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_LOW;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_SET;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_SET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_SET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_SET;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;

// 死区设置
TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;
sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_ENABLE;
sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_ENABLE;
sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
sBreakDeadTimeConfig.DeadTime = 255;  // 死区时间为255个时钟周期
sBreakDeadTimeConfig.BreakState = TIM_BREAK_ENABLE;
sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_ENABLE;

HAL_TIM_PWM_Init(&htim1);
HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1);
HAL_TIMEx_ConfigCommutationEvent_IT(&htim1, TIM_TS_NONE, TIM_COMMUTATION_SOFTWARE);
HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig);
HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig);
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);

2. 通过改变占空比来控制PWM输出

// 设置PWM占空比
__HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, 32768); // 占空比50%

3. 死区时间的设置可以通过更改`sBreakDeadTimeConfig.DeadTime`来实现。不同的死区时间将导致不同的占空比和PWM频率，需要根据实际情况进行调整。

以上是实现互补输出PWM带死区的基本步骤，需要根据具体的应用场景进行修改和优化。