战舰开发板的高级定时器

北辰极界 · 发表于 2018-11-18 21:28:47

用战舰开发板的高级定时器产生PWM波，在例程基础上改的程序，结果不能产生PWM波  高级定时器的配置和普通应该有什么区别吗还有利用定时器2 产生PWM波  PA1可以实现PB10 PB3等选用同样的方法竟然不行  这是什么问题

void TIM1_PWM_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE  | RCC_APB2Periph_AFIO, ENABLE);

GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE, &GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);


TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC3Init(TIM1, &TIM_OCInitStructure);

TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);

TIM_Cmd(TIM1, ENABLE);

}

以上是代码还有就是关于这些重映射还有复用等功能真的没有很好地理解  希望能得到详细解答  谢谢

peng1554 · 发表于 2018-11-18 21:28:48

这是TIM14路PWM输出，我这边测试正常

正点原子 · 发表于 2018-11-19 02:00:55

TIM1必须使能MOE才可以输出PWM

秋天 · 发表于 2018-11-19 08:51:11

学习一下

秋天 · 发表于 2018-11-19 08:56:31

https://blog.csdn.net/u014170207/article/details/50885511

这个帖子楼主看看

秋天 · 发表于 2018-11-19 08:57:38

[mw_shl_code=c,true]//通过TIM1的CH1输出互补的两个信号
//通过TIM8的CH1输出做刹车信号
void TIM1_configration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8 | RCC_APB2Periph_GPIOC, ENABLE);

//TIM1: PA8为CH1_OC1 PB13为CH1_OC1N PB12为刹车信号输入端
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_Init(GPIOB, &GPIO_InitStructure); //PB13和PA8配置为复用推挽输出

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_Init(GPIOB, &GPIO_InitStructure); //PB12做TIM1_BKIN
//TIM8

C7位OC2输出用作刹车信号
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOC, &GPIO_InitStructure); //PC7

//CH1_OC2通道配置用作刹车信号输出
TIM8->

SC = 899; //80KHz频率
TIM8->ARR = 20000; //计时0.25s
TIM8->CNT = 0X00;
TIM8->CCMR1 &= ~(0X03<<8);
TIM8->CCMR1 |= 1<<10;
TIM8->CCMR1 |= 0X06<<12; //PWM输出模式1
TIM8->CCR2 |= 10000; //占空比50%
TIM8->CCER |= 1<<4; //OC2输出使能
TIM8->DIER = 0X00;
TIM8->SR = 0X00;
TIM8->BDTR |= 1<<15;
TIM8->CR1 = 0X01; //使能计数器

//TIM1：CH1_OC通道配置
//时基单元配置
TIM1->

SC = 0; //80KHz频率
TIM1->ARR = 5000; //计时0.5ms
TIM1->CNT = 0X00;
TIM1->DIER = 0X00; //无中断
TIM1->CR2 |= (0<<9 | 0<<8); //设置OIS1=0 OIS1N = 0
TIM1->SR = 0X00; //SR设置缺省值
TIM1->CCMR1 |= 0X74; //pwm2模式 CC1输出
TIM1->CCER |= 0X09; //使能CC1E 禁止CC1EN
TIM1->CCR1 = 2000; //占空比20%
TIM1->BDTR = 0XFFE2; //死区时间10.9us 高电平刹车
TIM1->CR1 = 0X201; //使能计数器
}
---------------------
作者：快乐555
来源：CSDN
原文：https://blog.csdn.net/u014170207/article/details/50885511
版权声明：本文为博主原创文章，转载请附上博文链接！[/mw_shl_code]