请问TIM5配置时跟TIM2~4不一样吗？为什么TIM5_IRQn显示没有被定义？-第3页回答

请问TIM5配置时跟TIM2~4不一样吗？为什么TIM5_IRQn显示没有被定义？

2019-07-21 05:28发布

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16条回答

1楼-- · 2019-07-22 09:26

定时器1的中断名字和通用定时器有点差别，其他地方设置都一样。
void TIMER1_Init(u16 arr, u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

TIM_DeInit(TIM1);

TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler = psc;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_RepetitionCounter=0x00;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

TIM_ClearFlag(TIM1,TIM_FLAG_Update);
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE); //允许更新中断

NVIC_InitStructure.NVIC_IRQChannel=TIM1_UP_IRQn; //TIM1更新中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x02;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x02;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

TIM_Cmd(TIM1,ENABLE);
}
void TIM1_UP_IRQHandler(void)
{
if(TIM_GetITStatus(TIM1,TIM_IT_Update)!=RESET)
{
TIM_ClearITPendingBit(TIM1,TIM_IT_Update);
LED0=!LED0;
}
}