每行代码注释int main(void){ HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_DMA_Init(); MX_UART4_Init(); MX_USART3_UART_Init(); MX_USART2_UART_Init(); LCD_Init(); BACK_COLOR = CBT_BLUE; LCD_Clear(BACK_COLOR); POINT_COLOR=WHITE; display_logo(); LCD_ShowChsLongByte(80,80,3,"主节点",WHITE); HAL_UART_Receive_DMA(&huart2, UsartType2.usartDMA_rxBuf, RECEIVELEN); __HAL_UART_ENABLE_IT(&huart2, UART_IT_IDLE); HAL_UART_Receive_DMA(&huart3, UsartType3.usartDMA_rxBuf, RECEIVELEN); __HAL_UART_ENABLE_IT(&huart3, UART_IT_IDLE); HAL_UART_Receive_DMA(&huart4, UsartType4.usartDMA_rxBuf, RECEIVELEN); __HAL_UART_ENABLE_IT(&huart4, UART_IT_IDLE); while (1) { if(UsartType3.receive_flag) { UsartType3.receive_flag=0; HAL_UART_Transmit(&huart2,UsartType3.usartDMA_rxBuf,UsartType3.rx_len ,200) } if(UsartType2.receive_flag) { UsartType2.receive_flag=0; process_package(UsartType2.usartDMA_rxBuf,UsartType2.rx_len); } else HAL_Delay(500); if(LED_State>=6) LED_State=0; else LED_State++; LED_BLink(LED_State); }}

int main(void){
    HAL_Init(); // 初始化HAL库
    SystemClock_Config(); // 配置系统时钟
    MX_GPIO_Init(); // 初始化GPIO
    MX_DMA_Init(); // 初始化DMA
    MX_UART4_Init(); // 初始化UART4
    MX_USART3_UART_Init(); // 初始化USART3
    MX_USART2_UART_Init(); // 初始化USART2
    LCD_Init(); // 初始化LCD
    BACK_COLOR = CBT_BLUE; // 设置背景颜色
    LCD_Clear(BACK_COLOR); // 清空LCD屏幕
    POINT_COLOR=WHITE; // 设置画笔颜色为白色
    display_logo(); // 显示logo
    LCD_ShowChsLongByte(80,80,3,"主节点",WHITE); // 在LCD屏幕上显示字符
    HAL_UART_Receive_DMA(&huart2, UsartType2.usartDMA_rxBuf, RECEIVELEN); // 使能UART2的DMA接收
    __HAL_UART_ENABLE_IT(&huart2, UART_IT_IDLE); // 使能UART2的空闲中断
    HAL_UART_Receive_DMA(&huart3, UsartType3.usartDMA_rxBuf, RECEIVELEN); // 使能UART3的DMA接收
    __HAL_UART_ENABLE_IT(&huart3, UART_IT_IDLE); // 使能UART3的空闲中断
    HAL_UART_Receive_DMA(&huart4, UsartType4.usartDMA_rxBuf, RECEIVELEN); // 使能UART4的DMA接收
    __HAL_UART_ENABLE_IT(&huart4, UART_IT_IDLE); // 使能UART4的空闲中断
    while (1) { // 进入循环
        if(UsartType3.receive_flag) { // 如果UART3接收到数据
            UsartType3.receive_flag=0; // 清空接收标志位
            HAL_UART_Transmit(&huart2,UsartType3.usartDMA_rxBuf,UsartType3.rx_len ,200) // 发送数据到UART2
        }
        if(UsartType2.receive_flag) { // 如果UART2接收到数据
            UsartType2.receive_flag=0; // 清空接收标志位
            process_package(UsartType2.usartDMA_rxBuf,UsartType2.rx_len); // 处理数据包
        } else {
            HAL_Delay(500); // 延时500ms
        }
        if(LED_State>=6) LED_State=0; // 如果LED_State大于等于6，LED_State清零
        else LED_State++; // 否则LED_State加1
        LED_BLink(LED_State); // 控制LED灯闪烁
    }
}