2024年1月15日发(作者：)
STM32中TIM1-CH1和TIM1-CH1N的区别
高级定时器控制电机，我使用互补PWM输出，，但是项目一种情况要同时输出高或低电平，才可以使得电机不因为惯性而立刻停。。
下面是配置的代码。。停止时TIM_SetCompare1(TIM1,1800); 就可以停。但是不是立刻停，因为惯性吧
void MotorTIM1_INIT(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
/* TIM1, GPIOA, GPIOB, GPIOE and AFIO clocks enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 |
RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
/* GPIO Configuration */
GPIO_Configuration();
TIM_DeInit(TIM1);
/* Time Base configuration */
TIM_TimeBaseStructur_Period = 3600-1; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值 80K
TIM_TimeBaseStructure.TIM_Prescaler = 0; //设置用来作为TIMx时钟频率除数的预分频值 不分频
TIM_TimeBaseStructur_CounterMode = TIM_CounterMode_Up; //计数器模式 /* 向上计数模式 */
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS
= Tck_tim
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0; //设置 周期 计数值
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/* Channel 1, 2,3 and 4 Configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //使能输出比较状态
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; //使能 互补 输出状态
TIM_OCInitStructuM_Pulse = 1800; //设置待装入捕获比较寄存器的脉冲值 占空时间
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性:TIM输出比较极性低
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low; //互补 输出极性高
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set; //MOE=0 设置 TIM1输出比较空闲状态
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset; //MOE=0
重置 TIM1输出比较空闲状态
TIM_OC1Init(TIM1, &TIM_OCInitStructure); //设定好的参数 初始化TIM
TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);
//设置刹车特性 死区时间 锁电平 OSSI OSSR 状态 AOE(自动输出使能)
/* Automatic Output enable, Break, dead time and lock configuration*/
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable; //设置在运行模式下 非工作状态选项 OSSR
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable; //设置在运行模式下 非工作状态选项 OSSI
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1; //使用锁电平1
TIM_BDTRInitStructure.TIM_DeadTime = 0x7F; //指定了输出和打开
关闭状态之间的延时 13.89nsX127=1.7us
/* UTG[7:0]: 死区发生器设置(Dead-time generator setup) 位7:0
这些位定义了插入互补输出之间的死区持续时间。假设DT表示其持续时间：
DTG[7:5]=0xx => DT=DTG[7:0] ×Tdtg，Tdtg = TDTS；
DTG[7:5]=10x => DT=(64+DTG[5:0]) ×Tdtg，Tdtg = 2 ×TDTS；
DTG[7:5]=110 => DT=(32+DTG[4:0]) ×Tdtg，Tdtg = 8 ×TDTS；
DTG[7:5]=111 => DT=(32+DTG[4:0])×Tdtg，Tdtg = 16 ×TDTS；
例：若TDTS = 125ns(8MHZ)，可能的死区时间为：
0到15875ns，若步长时间为125ns；
16us到31750ns，若步长时间为250ns；
32us到63us，若步长时间为1us；
64us到126us，若步长时间为2us；
注：一旦LOCK级别(TIMx_BDTR寄存器中的LOCK位)设为1、2或3，则不能修改这些位。
*/
TIM_BDTRInitStructur_Break = TIM_Break_Disable; //使能刹车
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High; //刹车输入管脚 极性高
TIM_BDTRInitStructure.TIM_AutomaticOutput =
TIM_AutomaticOutput_Enable;//自动输出功能使能
TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure); //初始化设定好的参数
TIM_ARRPreloadConfig(TIM1,ENABLE);
/* TIM1 counter enable */
TIM_Cmd(TIM1, DISABLE);
/* Main Output Enable */
TIM_CtrlPWMOutputs(TIM1, DISABLE);
Motor_Stop();
}
系统时钟为72M,芯片为STM32F105RCT6
__IO uint16_t CCR1_Val = 1000;
配置部分：
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
GPIO_InitStructurO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructurO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
TIM_TimeBaseStructur_Period = 2000;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// Output Compare Toggle Mode configuration: Channel1
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructuM_Pulse = CCR1_Val;
TIM_OCInitStructur_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState =
TIM_OCIdleState_Reset;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
// TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Disable);//Disableh和Enable都试过
//TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
// TIM enable counter
TIM_Cmd(TIM1, ENABLE);
// TIM IT enable
TIM_ITConfig(TIM1, TIM_IT_CC1, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x03;
NVIC_InitStructurC_IRQChannelSubPriority = 0x03;
NVIC_InitStructuIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
中断部分：
void TIM1_CC_IRQHandler(void)
{
uint16_t capture = 0;
if (TIM_GetITStatus(TIM1, TIM_IT_CC1) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_CC1 );
capture = TIM_GetCapture1(TIM1);
// TIM_SetCompare1(TIM1, capture + CCR1_Val );
TIM_SetCompare1(TIM1, CCR1_Val );
}
}
程序大致是这个样子了，请大家看看有什么问题！！
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