姓名：祝俊宝 日期：2018.07.27函数
| 今日学习任务 | 一、复习昨天内容学习 二、实现4个按键分别控制4个彩灯亮灭spa |
| 今日任务完成状况 | 均完成 |
| 今日开发问题汇总 | 无code |
| 今日未解决问题 | 无ip |
| 今日开发收获 | 经过自主学习，消化了前两天的学习内容，对stm32单片机的理解加深了 |
| 自我评价 | 良好 |
| 部分代码 | #include "bsp_key.h"
/**********按键与中断线对应关系******
| |
key1 = PA0 | LED1 = PC1 |
key2 = PC13 | LED2 = PC2 |
key3 = PA2 | LED3 = PC3 |
key4 = PB5 | LED4 = PC4 |
| |
************************************/
void Key_Exit_Config(void)
{
//结构体变量声明
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/********************************************
使能I/O口时钟,选择GPIOA,GPIOB,GPIOC三个口
开启SYSCFG时钟
********************************************/
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOB |
RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/*****************************
初始化I/O口为输入浮空模式,
根据指定的参数初始化GPIOX外设
*****************************/
//浮空模式
GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_13); //PC13
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
//根据指定的参数初始化GPIOX外设
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_5); //PB5
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = (GPIO_Pin_0 | GPIO_Pin_2); //PA0和PA2
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/***************************
配置GPIO口与中断线的映射关系
至关于把GPIOx口与中断线连起来
***************************/
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource13);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource5);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource2);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA, EXTI_PinSource0);
/**************************
初始化中断线
配置触发条件，模式等参数
**************************/
EXTI_InitStructure.EXTI_Line = (EXTI_Line13 | EXTI_Line5 |
EXTI_Line0 | EXTI_Line2); //选择须要用到的中断线
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; /* 上升沿触发 */
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/*************************
配置中断分组，并使能中断
配置中断通道，中断优先级等参数
**************************/
//PC13
NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn; //使能按键外部中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0E; //抢占优先级0x0e
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0E; //相应优先级0x0e
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道
NVIC_Init(&NVIC_InitStructure); //中断优先级分组初始化
//PB5
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn; //IRQ指的是中断请求
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0E;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0E;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//PA0
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn; //IRQ指的是中断请求
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0E;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0E;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//PA2
NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn; //IRQ指的是中断请求
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0E;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0E;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/***********中断服务函数*********************
不一样中断线对应不一样中断函数，可根据须要写多个
中断函数
********************************************/
void EXTI0_IRQHandler(void)
{
if (EXTI_GetITStatus(EXTI_Line0) != RESET)
{
//PA0,KEY1按下
GPIO_ToggleBits(GPIOC,GPIO_Pin_1);
EXTI_ClearITPendingBit(EXTI_Line0);
printf("PA0 中断\r\n");
}
}
void EXTI15_10_IRQHandler(void)
{
/* PC13, K2按下*/
if (EXTI_GetITStatus(EXTI_Line13) != RESET)
{
GPIO_ToggleBits(GPIOC,GPIO_Pin_2);
EXTI_ClearITPendingBit(EXTI_Line13);
printf("PC13 中断\r\n");
}
}
void EXTI2_IRQHandler(void)
{
//PA2，K3按下
if (EXTI_GetITStatus(EXTI_Line2) != RESET)
{
GPIO_ToggleBits(GPIOC,GPIO_Pin_3);
EXTI_ClearITPendingBit(EXTI_Line2);
printf("PA2 中断\r\n");
}
}
void EXTI9_5_IRQHandler(void)
{
//PB5，K4按下
if (EXTI_GetITStatus(EXTI_Line5) != RESET)
{
GPIO_ToggleBits(GPIOC,GPIO_Pin_4);
EXTI_ClearITPendingBit(EXTI_Line5);
printf("PB5中断\r\n");
}
} |