TIM1_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable; //MOE=1且定时器不工作时,CHx和CHxN的输出状态 TIM1_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable; //MOE=0且定时器不工作时,CHx和CHxN的输出状态(详情看用户手册,一般都是ENABLE,不用深究) TIM1_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1; //BDTR寄存器写保护等级,防止软件错误误写。 TIM1_BDTRInitStructure.TIM_DeadTime = DEADTIME; //设置死区时间 TIM1_BDTRInitStructure.TIM_Break = TIM_Break_Enable; //使能TIM1刹车输入(BKIN),要把BKIN引脚拉低才有PWM输出 TIM1_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High; //刹车输入(BKIN)输入高电平有效 TIM1_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable; //刹车有效标志只能被软件清除,不能被自动清除 TIM_BDTRConfig(TIM1, &TIM1_BDTRInitStructure);
时间: 2024-04-24 15:21:14 浏览: 13
这段代码是配置STM32的定时器TIM1的BDTR寄存器的设置。下面是对代码中各个参数的解释:
- `TIM_OSSRState_Enable`:当MOE(主输出使能)为1且定时器不工作时,保持通道x和通道xN的输出状态。
- `TIM_OSSIState_Enable`:当MOE为0且定时器不工作时,保持通道x和通道xN的输出状态。一般情况下都是启用该功能,具体请参考用户手册。
- `TIM_LOCKLevel_1`:设置BDTR寄存器的写保护等级,以防止误写。
- `DEADTIME`:设置死区时间,用于在切换PWM信号的两个输出通道之间产生一个延迟。
- `TIM_Break_Enable`:使能TIM1的刹车输入(BKIN),要将BKIN引脚拉低才能产生PWM输出。
- `TIM_BreakPolarity_High`:刹车输入(BKIN)为高电平有效。
- `TIM_AutomaticOutput_Disable`:刹车有效标志只能被软件清除,不能自动清除。
最后一行代码`TIM_BDTRConfig(TIM1, &TIM1_BDTRInitStructure);`是将上述配置应用到TIM1的BDTR寄存器,以实现相应的设置。根据具体需求,可以根据该代码模板进行相应的修改和调整。
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void TIM4_Init(u16 arr,u16 psc) { GPIO_InitTypeDef GPIO_Initstructure; TIM_TimeBaseInitTypeDef TIM_TimeBasestructure; TIM_ocInitTypeDef TIM_OCInitStructure; //TIM4/GPIOA/AFIO CLK enable RCC_APB1PeriphclockCmd (RCC_APBlPeriph_TIM4,ENABLE); Rcc_APB2PeriphclockCmd(Rcc_APB2Periph_GPIOB , ENABLE); Rcc_APB2PeriphClockCmd (RCC_APB2Periph_AFIO ,ENABLE); //set PB6(TIM4_CHl) PB7(TIM4_CH2) as AF output mode for PRM output GPIO_Initstructure.GPIO_Pin = GPIO_Pin_6 l GPIO_Pin_7; GPIO_Initstructure.GPIO_Mode = GPIo_Mode_AF_PP; GPIO_Initstructure.GPIo_Speed = GPIo_Speed_5OMHz; GPIO_Init(GPIOB,&GPIO_Initstructure); //TIM4 base config TIM_TimeBasestructure.TIM_Period = arr; TIM_TimeBasestructure.TIM_Prescaler = psc; TIM_TimeBasestructure.TIM_C1ockDivision = 0; TIM_TimeBasestructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit (TIM4,&TIM_TimeBasestructure) ; //PWM of TIM4_CHl config TIM_OCInitstructure.TIM_OCMode = TIM_OcMode_PWM1; TIM_OCInitstructure.TIM_Outputstate = TIM_Outputstate_Enable; TIM_OcInitstructure.TIM_Pulse = 0; TIM_OCInitstructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC1Init (TIM4,&TIM_OCInitStructure) ; TIM_OClpreloadConfig(TIM4,TIM_OCPreload_Enable); // PWM of TIM4_CH2 config TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWMl; TIM_OCInitstructure.TIM_Outputstate = TIM_Outputstate_Enable; TIM_OCInitStructure.TIM_Pulse =0; TIM_OCInitstructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC2Init (TIM4,&TIM_OCInitStructure) ; TIM_OC2PreloadConfig(TIM4,TIM_OCPreload_Enable) ; //TIM4 preload enable TIM_ARRPreloadconfig (TIM4,ENABLE); //MOE enable for advanced TIMl or TIM8 TIM_Ctr1PWMOutputs (TIM4,ENABLE); //TIM4 enable TIM_Cmd (TIM4,ENABLE);
这是一段STM32的代码,用于初始化TIM4定时器和PWM输出。其中,通过GPIO_InitTypeDef结构体初始化GPIOB的PB6和PB7引脚,将它们设置为复用推挽输出模式(AF_PP)。通过TIM_TimeBaseInitTypeDef结构体初始化TIM4的时基参数,包括周期(arr)、预分频器(psc)、时钟分频等。接下来通过TIM_ocInitTypeDef结构体初始化TIM4的PWM输出参数,包括输出模式(TIM_OcMode_PWM1)、输出使能(TIM_Outputstate_Enable)、PWM脉宽(TIM_Pulse)、极性(TIM_OCPolarity_High)等。最后通过TIM_Cmd函数使能TIM4定时器,并通过TIM_Ctr1PWMOutputs函数使能定时器的PWM输出。
__HAL_TIM_MOE_ENABLE
__HAL_TIM_MOE_ENABLE是一个宏定义,用于使能定时器的主输出。根据引用\[1\]和引用\[2\]的函数实现步骤,当使用高级计数器TIM1和TIM8时,需要调用__HAL_TIM_MOE_ENABLE函数来使能主输出。这个宏定义的具体实现可以参考引用\[1\]和引用\[2\]中的代码。
#### 引用[.reference_title]
- *1* *2* [stm32的TIM定时器HAL库函数的使用](https://blog.csdn.net/mg_hover/article/details/96834177)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control,239^v3^insert_chatgpt"}} ] [.reference_item]
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