#include "sys.h"
#include "led.h"
#include "delay.h"
#include "string.h"
#include "USART3_TIM2.h"
char *str_open = "open";
char *str_close = "close";
int main(void)
{
delay_init();
Led_Init();
USART3_TIM2_Init(115200);
while(1)
{
if(RX_stat == 1)//表示接受完成
{
if(strcmp(RX_buf,str_open) == 0)
{
LED = 0;
}
if(strcmp(RX_buf,str_close) == 0)
{
LED = 1;
}
RX_stat = 0;
count = 0;
memset(RX_buf,0,strlen(RX_buf));
}
}
}
#include "led.h"
void Led_Init(void)
{
//结构体的声明,必须放在最前面,不能有任何
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);//区地址符
}
#include "USART3_TIM2.h"
u8 count = 0;
u8 RX_stat = 0;//0表示接收未完成,1表示接收完成
char RX_buf[10] = {0};
void USART3_TIM2_Init(u32 bound)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
//开启系统和复用功能时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);
//PB10配置为复用推挽式输出
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//PB11配置为浮空输入
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = bound;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
USART_Init(USART3, &USART_InitStructure);
USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);//配置串口接收为中断模式
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_Cmd(USART3,ENABLE);
USART_ClearFlag(USART3,USART_FLAG_TC);
//开启TIM2的使能定时器
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
TIM_TimeBaseStructure.TIM_Period = (100 - 1);//ARR
TIM_TimeBaseStructure.TIM_Prescaler = (7200 - 1);//PSC
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//选择时钟不分割
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, & TIM_TimeBaseStructure);
//使能定时器2的中断
TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);
//配置定时器2的中断优先级
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//使能定时器2
TIM_Cmd(TIM2,DISABLE);
}
void USART3_IRQHandler(void)
{
USART_ClearFlag(USART3,USART_FLAG_RXNE);
RX_buf[count] = USART_ReceiveData(USART3);
count++;
TIM_SetCounter(TIM2,0);
TIM_Cmd(TIM2,ENABLE);
}
void TIM2_IRQHandler(void)
{
TIM_ClearFlag(TIM2,TIM_FLAG_Update);
TIM_Cmd(TIM2,DISABLE);
RX_stat = 1;
}
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