新手上路
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- 金钱
- 33
- 注册时间
- 2019-7-10
- 在线时间
- 12 小时
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void TIM5_CH1_Input_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5,ENABLE);//ê1ÄüTIM5ê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;//1ü½ÅéèÖÃ
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IPD; //éèÖÃÏÂà-êäèëÄ£ê½ GPIO_Mode_AF_PP
GPIO_Init(GPIOA,&GPIO_InitStructure); /* 3õê¼»ˉGPIO */
NVIC_InitStructure.NVIC_IRQChannel =TIM5_IRQn;//ÖD¶Ïí¨μà
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;//ÇàÕ¼óÅÏè¼¶
NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //×óóÅÏè¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μàê1Äü
NVIC_Init(&NVIC_InitStructure);
TIM_TimeBaseInitStructure.TIM_Period=arr; //×Ô¶ˉ×°ÔØÖμ
TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //·ÖÆμÏμêy
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //éèÖÃÏòéϼÆêyÄ£ê½
TIM_TimeBaseInit(TIM5,&TIM_TimeBaseInitStructure);
TIM_ICInitStructure.TIM_Channel=TIM_Channel_1; //í¨μà1
TIM_ICInitStructure.TIM_ICFilter=0x00; //ÂË2¨
TIM_ICInitStructure.TIM_ICPolarity=TIM_ICPolarity_Rising;//2¶»ñ¼«DÔ
TIM_ICInitStructure.TIM_ICPrescaler=TIM_ICPSC_DIV1; //·ÖÆμÏμêy
TIM_ICInitStructure.TIM_ICSelection=TIM_ICSelection_DirectTI;//Ö±½óó3éäμ½TI1
TIM_ICInit(TIM5,&TIM_ICInitStructure);
// 2¶»ñí¨μàIC2ÅäÖÃ
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Falling;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_IndirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x0;
TIM_PWMIConfig(TIM5, &TIM_ICInitStructure);
// TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC1|TIM_IT_CC2,ENABLE);
TIM_PWMIConfig(TIM5, &TIM_ICInitStructure);
// Ñ¡Ôñêäèë2¶»ñμÄ′¥·¢DÅoÅ
// TIM_SelectInputTrigger(TIM5,TIM_TS_TI2FP2 );
// Ñ¡Ôñ′óÄ£ê½: ¸′λÄ£ê½
// PWMêäèëÄ£ê½ê±,′óģ꽱ØDë1¤×÷Ôú¸′λģ꽣¬μ±2¶»ñ¿aê¼ê±,¼ÆêyÆ÷CNT»á±»¸′λ
TIM_SelectSlaveMode(TIM5, TIM_SlaveMode_Reset);
TIM_SelectMasterSlaveMode(TIM5,TIM_MasterSlaveMode_Enable);
// ê1Äü2¶»ñÖD¶Ï,Õa¸öÖD¶ÏÕë¶ÔμÄêÇÖ÷2¶»ñí¨μࣨ2aá¿ÖüÆúÄǸö£©
// TIM_ITConfig(TIM5, TIM_IT_CC1, ENABLE);
// Çå3yÖD¶Ï±ê־λ
TIM_ClearITPendingBit(TIM5, TIM_IT_Update); // TIM_IT_CC1
// ê1Äü¸ß¼¶¿ØÖƶ¨ê±Æ÷£¬¼ÆêyÆ÷¿aê¼¼Æêy
TIM_Cmd(TIM5,ENABLE); //ê1Äü¶¨ê±Æ÷
}
void TIM5_IRQHandler(void)
{
printf("aaaaaa");
if(TIM_GetITStatus(TIM5,TIM_IT_CC1)) //·¢éú2¶»ñÖD¶Ï
{
/* Çå3yÖD¶Ï±ê־λ */
TIM_ClearITPendingBit(TIM5, TIM_IT_CC1);
flag=1;
}
}
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