配置這點應該沒問題， 因為昨天還是能接收發送的， 現已確定攝像頭也是能發送數據的 只是接收中斷沒觸發
- 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端口設置
- GPIO_InitTypeDef GPIO_InitStructure;
- USART_InitTypeDef USART_InitStructure;
- NVIC_InitTypeDef NVIC_InitStructure;
-
- RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //使能GPIOA時鐘
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//使能USART1時鐘
- RCC_AHB3PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
-
- //串口1對應引腳復用映射
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1); //GPIOA9復用為USART1
- GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10復用為USART1
-
- //串口2對應引腳復用映射
- 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;//復用功能
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //速度50MHz
- GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽復用輸出
- GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //上拉
- GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PA9，PA10
- //USART1 初始化設置
- USART_InitStructure.USART_BaudRate = bound;//波特率設置
- USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字長為8位數據格式
- USART_InitStructure.USART_StopBits = USART_StopBits_1;//一個停止位
- USART_InitStructure.USART_Parity = USART_Parity_No;//無奇偶校驗位
- USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//無硬件數據流控制
- USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //收發模式
- 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);//開啟相關中斷
- USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
- //Usart1 NVIC 配置
- NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//串口1中斷通道
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;//搶占優先級2 數越小，優先級越高
- NVIC_InitStructure.NVIC_IRQChannelSubPriority =2; //子優先級2
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
- NVIC_Init(&NVIC_InitStructure); //根據指定的參數初始化VIC寄存器、
- NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;//串口2中斷通道
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//搶占優先級3
- NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子優先級3
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
- NVIC_Init(&NVIC_InitStructure); //根據指定的參數初始化VIC寄存器、
- #endif
-
- }
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可以確定程序是跑起來了 硬件接線也查了好多遍。 目前真是不知道咋解決了 還望賜教 謝謝了
