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本帖最后由 wang521000 于 2017-4-24 19:34 编辑
#include "stm32f10x.h"
#include "delay.h"
#include "sys.h"
void PWM_Init(u16 arr,u16 psc);
void TIM3_PWM_Init(u16 arr,u16 psc);
NVIC_InitTypeDef NVIC_InitStructure;
void EXTIx_Init();
int main(void)
{
delay_init();
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
EXTIx_Init();
TIM3_PWM_Init(899,0);
TIM_SetCompare2(TIM3,300);
while(1)
{
}
}
void TIM3_PWM_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //ê1Äü¶¨ê±Æ÷3ê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); //ê1ÄüGPIOíaéèoíAFIO¸′óÃ1|ÄüÄ￡¿éê±Öó
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //TIM_CH2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);//3õê¼»ˉGPIO
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; //TIM_CH2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; //TIM_CH2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &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(TIM3, &TIM_TimeBaseStructure);
//3õê¼»ˉTIM3 Channel2 PWMÄ￡ê½
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_Cmd(TIM3, ENABLE);
}
void EXTIx_Init()
{
EXTI_InitTypeDef EXTI_InitStruct;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIOA.0
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);
EXTI_InitStruct.EXTI_Line=EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_LineCmd=ENABLE;
EXTI_InitStruct.EXTI_Mode=EXTI_Line0;
EXTI_InitStruct.EXTI_Trigger=EXTI_Trigger_Rising_Falling;
EXTI_Init(&EXTI_InitStruct);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void NVIC_ENABLE()
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void NVIC_DISABLE()
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE;
NVIC_Init(&NVIC_InitStructure);
}
//ía2¿ÖD¶Ï0·tÎñ3ìDò
void EXTI0_IRQHandler()
{
// NVIC_DISABLE();
if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0)==1)
{
PBout(6)=1;
PBout(7)=0;
}
else
{
PBout(6)=0;
PBout(7)=1;
}
EXTI_ClearITPendingBit(EXTI_Line0);
// NVIC_ENABLE();
}
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最佳答案
查看完整内容[请看2#楼]
你仔细看了我的回复了吗？ 不是顺序的问题，是你赋值赋值错了。
EXTI_InitStruct.EXTI_Line=EXTI_Mode_Interrupt;[/backcolor]
EXTI_InitStruct.EXTI_Mode=EXTI_Line0;[/backcolor]
搞反了吧[/backcolor]
EXTI_InitStruct.EXTI_Line=EXTI_Line0;[/backcolor]
EXTI_InitStruct.EXTI_Mode=EXTI_Mode_Interrupt;[/backcolor]
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发表于 2017-4-24 19:27:04
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