今天的收获还是挺多得，学习了中断，原来用寄存器控制中断还是很麻烦得，不过多了解一些底层得东西有助于学习其他的需要和芯片。下午自己编程写出了用中断控制按键控制蜂鸣器
#include "main.h"
void GPIO_config(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
//PI11 输出
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOI,ENABLE);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(GPIOI, &GPIO_InitStruct);
}
void EXTI_config(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
EXTI_InitTypeDef EXTI_InitStruct;
//PC13输入
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG,ENABLE);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(GPIOC, &GPIO_InitStruct);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource13); //EXTI 与 GPIO管脚绑定
EXTI_InitStruct.EXTI_Line = EXTI_Line13;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStruct) ;
}
void NVIC_config(void)
{
NVIC_InitTypeDef NVIC_InitStruct;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStruct.NVIC_IRQChannel = EXTI15_10_IRQn ;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}
int main(void)
{
GPIO_config();
EXTI_config();
NVIC_config();
while (1)
{
}
}
