53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/***********************************************
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公司：轮趣科技（东莞）有限公司
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品牌：WHEELTEC
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官网：wheeltec.net
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淘宝店铺：shop114407458.taobao.com
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速卖通: https://minibalance.aliexpress.com/store/4455017
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版本：5.7
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修改时间：2021-04-29
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Brand: WHEELTEC
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Website: wheeltec.net
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Taobao shop: shop114407458.taobao.com
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Aliexpress: https://minibalance.aliexpress.com/store/4455017
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Version:5.7
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Update：2021-04-29
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All rights reserved
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***********************************************/
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#include "exti.h"
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/**************************************************************************
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Function: External interrupt initialization
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Input : none
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Output : none
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函数功能：外部中断初始化
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入口参数：无
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返回 值：无
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**************************************************************************/
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void MiniBalance_EXTI_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); //外部中断，需要使能AFIO时钟
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); //使能GPIO端口时钟
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //端口配置
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入
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GPIO_Init(GPIOA, &GPIO_InitStructure); //根据设定参数初始化GPIO
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GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource12);
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EXTI_InitStructure.EXTI_Line=EXTI_Line12;
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//下降沿触发
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init(&EXTI_InitStructure); //根据EXTI_InitStruct中指定的参数初始化外设EXTI寄存器
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NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //使能按键所在的外部中断通道
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02; //抢占优先级2，
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01; //子优先级1
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道
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NVIC_Init(&NVIC_InitStructure);
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}
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