定时器(Timer)最基本的功能就是定时了,比如定时发送USART数据、定时采集AD数据等等。如果把定时器与GPIO结合起来使用的话可以实现非常丰富的功能,可以测量输入信号的脉冲宽度,可以生产输出波形。定时器生产PWM控制电机状态是工业控制普遍方法,这方面知识非常有必要深入了解。 STM32F4xx系列控制器有2个高级控制定时器
输出比较模式:成员变量OCMode的取值范围 PWM模式1:递增计数时,当TIMx_CNT (当前计数值) PWM模式2:递增计数时,当TIMx_CNT (当前计数值) 有效电平极性:成员变量OCPolarity的取值范围 快速输出使能:成员变量OCFastMode的取值范围 可以加快触发输入事件对通道输出的影响,默认配置为不使能 接口函数: 定时器PWM输出启动函...
_Base_Init(&htim1) != HAL_OK) { Error_Handler(__FILE__, __LINE__); } /* 配置模式 */ sConfigOC.OCMode = TIM_OCMODEPWM1; sConfigOC.Pulse = 1; sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH; sConfigOC.OCNPolarity = TIMOCNPOLARITY_HIGH; sConfigOC.OCFastMode = TIM_OCFAST...
Timer B : Up-Down Mode : Up-counting Timer counter reset trigger source : Master timer compare 1 event PWM set source : Master timer compare 1 event PWM reset source : Timer compare 3 event + EEV4 EEV4 : Source:EE source 2 – COMP1 Sensitivity:Falling edge Fast Mode:re-sync mode ...
void TimerPWMInit(void) { TIM_ClockConfigTypeDef sClockSourceConfig; TIM_OC_InitTypeDef sConfig; // 定时器基本功能配置 hpwm.Instance = TIMx; // 指定定时器 TIM3 hpwm.Init.Prescaler = TIM_PRESCALER; // 预分频系数 PSC=360-1 hpwm.Init.CounterMode = TIM_COUNTERMODE_UP; // 向上计数 ...
@note This parameter is valid only for timer instances supporting break feature.*/uint32_t OCFastMode;/*!< Specifies the Fast mode state. This parameter can be a value of @ref TIM_Output_Fast_State @note This parameter is valid only in PWM1 and PWM2 mode.*/uint32_t OCIdleState;/*...
I ´ve been searching for this and I found that Fast mode tab in timer setting in CubeMX mean this: Bit 2 OC1FE: Output Compare 1 fast enableThis bit decreases the latency between a trigger event and a transition on the timer output.It must be used in one-pulse mode (OPM bit set...
uint32_t OCMode; //PWM 模式 uint32_t Pulse; //捕获比较值 uint32_t OCPolarity; //极性 uint32_t OCNPolarity; uint32_t OCFastMode; //快速模式 uint32_t OCIdleState; uint32_t OCNIdleState; }TIM_OC_InitTypeDef; 该结构体成员我们重点关注前三个。成员变量 OCMode 用来设置模式,也就是我们前...
*/voidTimerPWMInit(void){TIM_ClockConfigTypeDef sClockSourceConfig;TIM_OC_InitTypeDef sConfig;// 定时器基本功能配置hpwm.Instance=TIMx;// 指定定时器 TIM3hpwm.Init.Prescaler=TIM_PRESCALER;// 预分频系数 PSC=360-1hpwm.Init.CounterMode=TIM_COUNTERMODE_UP;// 向上计数hpwm.Init.Period=TIM_PERIOD...
以下是初始化Timer和DMA的代码示例: #include "stm32f1xx_hal.h" TIM_HandleTypeDef htim1; DMA_HandleTypeDef hdma_tim1_ch1; void MX_TIM1_Init(void) { TIM_OC_InitTypeDef sConfigOC = {0}; htim1.Instance = TIM1; htim1.Init.Prescaler = 15; // 分频 htim1.Init.CounterMode = TIM_COUNT...