配置这点应该没问题, 因为昨天还是能接收发送的, 现已确定摄像头也是能发送数据的 只是接收中断没触发
- if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
- {
- LED0=1;
-
- Rxbuf[data_cnt++]=USART_ReceiveData(USART1);
-
- if(state == 0 && Rxbuf[0] == title1)
- {
- state = 1;
- }
- else if(state == 1 && Rxbuf[1] == title2)
- {
- state = 2;
- data_cnt=0;
- }
- else if (state==2)
- {
-
- state=0;
- Data_Processing(Rxbuf,data_cnt);
-
- }
- else
- state=0;
-
- }[code]void uart_init(u32 bound){
- //GPIO端口设置
- GPIO_InitTypeDef GPIO_InitStructure;
- USART_InitTypeDef USART_InitStructure;
- NVIC_InitTypeDef NVIC_InitStructure;
-
- RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//使能USART1时钟
- RCC_AHB3PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
-
- //串口1对应引脚复用映射
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1); //GPIOA9复用为USART1
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10复用为USART1
-
- //串口2对应引脚复用映射
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource2,GPIO_AF_USART2);
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource3,GPIO_AF_USART2);
-
- //USART1端口配置
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10 |GPIO_Pin_2 | GPIO_Pin_3 ;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz
- GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
- GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
- GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA9,PA10
- //USART1 初始化设置
- USART_InitStructure.USART_BaudRate = bound;//波特率设置
- 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(USART1, &USART_InitStructure); //初始化串口1
- USART_Init(USART2, &USART_InitStructure); //初始化串口2
-
- USART_Cmd(USART1, ENABLE); //使能串口1
- USART_Cmd(USART2, ENABLE);
- //USART_ClearFlag(USART1, USART_FLAG_TC);
-
- //#if EN_USART1_RX
- USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启相关中断
- USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
- //Usart1 NVIC 配置
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//串口1中断通道
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;//抢占优先级2 数越小,优先级越高
- NVIC_InitStructure.NVIC_IRQChannelSubPriority =2; //子优先级2
- 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、
- NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;//串口2中断通道
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//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、
- #endif
-
- }
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