#include "wifi.h" #include "string.h" #include "delay.h" ///////////////串口基本设置////////////////// /////////////////////////////////////////////// /////////////////////////////////////////////// /////////////////////////////////////////////// /************* 本地变量声明 **************/ char Uart3_Buf[Buf3_Max];//串口2接收缓存 u8 First_Int = 0; //串口3初始化 void USART3_init(u32 bound) { //GPIO端口设置 GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //使能USART3,GPIOB时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //使能USART3,GPIOB时钟 //USART3_TX GPIOB10 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //PB10 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出 GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB //USART3_RX GPIOB11初始化 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;//PB11 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入 GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB //Usart3 NVIC 配置 NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0 ;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器 //USART3 初始化设置 USART_InitStructure.USART_BaudRate = bound;//串口波特率 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收发模式 USART_Init(USART3, &USART_InitStructure); //初始化串口3 USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//开启串口接受中断 USART_Cmd(USART3, ENABLE); //使能串口3 } void USART3_IRQHandler(void) //串口3中断服务程序 { u8 Res=0; Res = USART_ReceiveData(USART3); Uart3_Buf[First_Int] = Res; //将接收到的字符串存到缓存中 First_Int++; //缓存指针向后移动 if(First_Int >= Buf3_Max) //如果缓存满,将缓存指针指向缓存的首地址 { First_Int = 0; } } //清除串口缓存数据 void CLR_Buf(void) { u16 k; for(k=0;k",3,50); //发送通道号,以及需要发送的字符个数 delay_ms(200); UART3_SendString(buf); delay_ms(100); }