NVIC_InitTypeDef NVIC_InitStruct; NVIC_InitStruct.NVIC_IRQChannel =USART1_IRQn; //串口1 NVIC_InitStruct.NVIC_IRQChannelCmd =ENABLE; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority =1; NVIC_InitStruct.NVIC_IRQChannelSubPriority =0; NVIC_Init(&NVIC_InitStruct); NVIC_InitStruct.NVIC_IRQChannel = EXTI0_IRQn; // 外部中断线0对应的中断向量 NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0; // 抢占优先级 NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1; // 子优先级 NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStruct); NVIC_InitStruct.NVIC_IRQChannel = TIM2_IRQn; //TIM2中断 NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级 NVIC_InitStruct.NVIC_IRQChannelSubPriority = 2; //子优先级 NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStruct); //使能中断 NVIC_InitStruct.NVIC_IRQChannel =EXTI1_IRQn; NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority =0; NVIC_InitStruct.NVIC_IRQChannelSubPriority=3; NVIC_InitStruct.NVIC_IRQChannelCmd =ENABLE; NVIC_Init(&NVIC_InitStruct);

这段代码是针对STM32的中断初始化代码。其中，NVIC代表嵌入式系统中断控制器，NVIC_InitStruct代表中断配置结构体。

首先，这段代码配置了USART1串口的中断，中断优先级为1，子优先级为0。然后，配置了外部中断线0的中断，抢占优先级为0，子优先级为1。接着，配置了TIM2定时器的中断，抢占优先级为0，子优先级为2。最后，配置了外部中断线1的中断，抢占优先级为0，子优先级为3。

通过这些配置，当对应的中断事件触发时，系统会执行对应的中断服务程序，从而实现对应的功能。

相关问题

对下面的的这一串代码进行检错，并告知我这是对STM32单片机哪个模块的初始化“int main(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART2,ENABLE); RCC_AHBPeriphResetCmd(RCC_APB2Periph_GPIOA,ENABLE); GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA,&GPIO_InitStructure); USART_InitStructure.USART_BaudRate = 5200; USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_Mode = USART_Mode_Rx|USART_Mode_Tx; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_Init(USART1,&USART_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_Init(&NVIC_InitStructure); }”

这段代码存在几个错误：

1. 在初始化时，使用了不正确的宏定义。函数 `RCC_APB2PeriphClockCmd()` 和 `RCC_AHBPeriphResetCmd()` 应该分别使用 `RCC_APB2PeriphClockCmd()` 和 `RCC_AHBPeriphClockCmd()` 来初始化 USART2 和 GPIOA 模块。

2. 在初始化 GPIO 时，使用了不正确的 GPIO 引脚。GPIO_Pin_10 应该改为 GPIO_Pin_2，因为 USART2 的引脚为 PA2。

3. 在初始化 USART 时，使用了不正确的 USART 模块。应该将 `USART1` 改为 `USART2`，因为我们要初始化的是 USART2 模块。

最后，缺少返回值 `return 0;`。完整的代码如下：

int main(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART2, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
    
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;
    
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // 已修正
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    
    USART_InitStructure.USART_BaudRate = 5200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_Init(USART2, &USART_InitStructure); // 已修正
    
    NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
    NVIC_Init(&NVIC_InitStructure);
    
    return 0; // 添加了返回值
}

这段代码初始化了 STM32 单片机的 USART2 模块。

好的，谢谢。void uart6_init(void) { RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; // 已修正 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; USART_InitTypeDef USART_InitStructure; USART_InitStructure.USART_BaudRate = 115200; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); // 已修正 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; // 已修正 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; GPIO_Init(GPIOA, &GPIO_InitStructure); NVIC_Init(&NVIC_InitStructure); USART_Init(USART1, &USART_InitStructure); // 已修正 USART_Cmd(USART1, ENABLE); } void USART1_IRQHandler(void) // 已修正 { if (USART_GetITStatus(USART1, USART_IT_RXNE) == SET) { // 处理接收数据的代码 } USART_ClearITPendingBit(USART1, USART_IT_RXNE); }

这段代码存在一个错误：

1. 在初始化 USART 时，使用了不正确的 USART 模块。应该将 `USART1` 改为 `USART2`，因为我们要初始化的是 USART2 模块。

修正后的代码如下：

void uart6_init(void)
{
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
    
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    
    USART_InitTypeDef USART_InitStructure;
    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
    
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
    
    NVIC_InitTypeDef NVIC_InitStructure;
    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    NVIC_Init(&NVIC_InitStructure);
    USART_Init(USART2, &USART_InitStructure);
    
    USART_Cmd(USART2, ENABLE);
}

void USART2_IRQHandler(void)
{
    if (USART_GetITStatus(USART2, USART_IT_RXNE) == SET)
    {
        // 处理接收数据的代码
    }
    USART_ClearITPendingBit(USART2, USART_IT_RXNE);
}

这段代码初始化了 STM32 单片机的 USART2 模块，并添加了接收数据的中断处理函数。