[问答]

如何对STM32F103的串口进行中断配置呢

问答对人有帮助，内容完整，我也想知道答案 0 如何对STM32F103的串口进行初始化呢？如何对STM32F103的串口进行中断配置呢？ 0
2021-12-13 07:31:19　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × heks 该类别下有 50 个回答。邀请回答 hgimtk 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 42 个回答。邀请回答 wang21cj 该类别下有 41 个回答。邀请回答 chm5 该类别下有 40 个回答。邀请回答 hjfjsdgfjdsf 该类别下有 37 个回答。邀请回答 h1654155957.9520 该类别下有 35 个回答。邀请回答 fdjslkjd 该类别下有 35 个回答。邀请回答 werywer 该类别下有 35 个回答。邀请回答 uvysdfydad 该类别下有 35 个回答。邀请回答凤毛麟角该类别下有 34 个回答。邀请回答维生素B2 该类别下有 34 个回答。邀请回答 dfzvzs 该类别下有 34 个回答。邀请回答 jenny042 该类别下有 34 个回答。邀请回答 ggfvxv 该类别下有 33 个回答。邀请回答 LY0206 该类别下有 33 个回答。邀请回答 meihuacg 该类别下有 33 个回答。邀请回答 hfgdzc 该类别下有 33 个回答。邀请回答储蓄叛逆该类别下有 32 个回答。邀请回答江左盟该类别下有 32 个回答。邀请回答举报王鹏相关推荐 • STM32F103的外部中断要怎样去使用呢 1313 • stm32f103串口3程序为什么会频繁进入串口接收中断呢 1349 • STM32F103的中断管理方法是什么 1101 • STM32F103的中断有哪些呢 3255 • 如何对stm32f427的外部中断进行配置呢 1299 • 如何去配置STM32F103串口4和串口5的中断接收程序呢 1431 • 如何去实现stm32f103串口一与串口二的printf函数输出呢 1084 • 如何对STM32F103定时器中断优先级进行配置呢 2411 • STM32F103进行串口调试时输出了乱码该怎么办呢 1368 • 如何将STM32F103的串口1配置成空闲中断模式且使能DMA接收呢 1134 2个回答

答案对人有帮助，有参考价值 0 串口初始化时钟注意必须先开启时钟后再进行配置，否则无效 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); 端口 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; // GPIO_Init(GPIOA, &GPIO_InitStructure);// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; // GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure);// 串口配置 Usart2_structure.USART_BaudRate=9600; Usart2_structure.USART_HardwareFlowControl=USART_HardwareFlowControl_None; Usart2_structure.USART_Mode=USART_Mode_Rx; Usart2_structure.USART_Parity=USART_Parity_No; Usart2_structure.USART_StopBits=USART_StopBits_1; Usart2_structure.USART_WordLength=USART_WordLength_8b; USART_Init(USART2,&Usart2_structure); Usart2_structure.USART_BaudRate=9600; Usart2_structure.USART_HardwareFlowControl=USART_HardwareFlowControl_None; Usart2_structure.USART_Mode=USART_Mode_Tx; Usart2_structure.USART_Parity=USART_Parity_No; Usart2_structure.USART_StopBits=USART_StopBits_1; Usart2_structure.USART_WordLength=USART_WordLength_8b; 中断配置注意使能中断时不允许，用\|连接符进行多项使能 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ; // NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; // NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ NVIC_Init(&NVIC_InitStructure); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); USART_ITConfig(USART2, USART_IT_TC, ENABLE); 使能 USART_Cmd(USART2,ENABLE); 中断函数 void USART2_IRQHandler(void) { if(USART_GetITStatus(USART2, USART_IT_TC)!=RESET) { ledctr=!ledctr; USART_ClearITPendingBit(USART2,USART_IT_TC); } if(USART_GetITStatus(USART2, USART_IT_RXNE)!=RESET) { ledctr=USART_ReceiveData(USART2); } }

2021-12-13 14:04:14 评论举报史晓明

答案对人有帮助，有参考价值 0 串口初始化时钟注意必须先开启时钟后再进行配置，否则无效 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); 端口 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; // GPIO_Init(GPIOA, &GPIO_InitStructure);// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; // GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_InitStructure);// 串口配置 Usart2_structure.USART_BaudRate=9600; Usart2_structure.USART_HardwareFlowControl=USART_HardwareFlowControl_None; Usart2_structure.USART_Mode=USART_Mode_Rx; Usart2_structure.USART_Parity=USART_Parity_No; Usart2_structure.USART_StopBits=USART_StopBits_1; Usart2_structure.USART_WordLength=USART_WordLength_8b; USART_Init(USART2,&Usart2_structure); Usart2_structure.USART_BaudRate=9600; Usart2_structure.USART_HardwareFlowControl=USART_HardwareFlowControl_None; Usart2_structure.USART_Mode=USART_Mode_Tx; Usart2_structure.USART_Parity=USART_Parity_No; Usart2_structure.USART_StopBits=USART_StopBits_1; Usart2_structure.USART_WordLength=USART_WordLength_8b; 中断配置注意使能中断时不允许，用\|连接符进行多项使能 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ; // NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; // NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ NVIC_Init(&NVIC_InitStructure); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); USART_ITConfig(USART2, USART_IT_TC, ENABLE); 使能 USART_Cmd(USART2,ENABLE); 中断函数 void USART2_IRQHandler(void) { if(USART_GetITStatus(USART2, USART_IT_TC)!=RESET) { ledctr=!ledctr; USART_ClearITPendingBit(USART2,USART_IT_TC); } if(USART_GetITStatus(USART2, USART_IT_RXNE)!=RESET) { ledctr=USART_ReceiveData(USART2); } }

2021-12-13 14:05:16 评论举报李欣海