如何对STM32F103R6微控制器的串口通信USART进行Proteus模拟呢

Proteus模拟STM32F103R6微控制器之串口通信USART的方法，实验环境如下：
  模拟软件：Proteus 8.11 SP0
  开发环境：Keil MDK 5.33
  参考资料：ST公司官方参考手册
  一、原理图
  STM32F103微处理器的USART1发送：PA9，接收：PA10。
  虚拟终端的发送接到STM32F103的接收，虚拟终端的接收接到STM32F103的发送。原理图如下：
  
  

  

  二、源码

// NVIC配置
static void NVIC_Configuration(void)
{
        NVIC_InitTypeDef NVIC_InitStructure;
       
        // Configure the NVIC Preemption Priority Bits
        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
       
        // Enable the USART1 Interrupt
        NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);
}

// USART1配置
void USART1_Config(void)
{
        GPIO_InitTypeDef GPIO_InitStructure;
        USART_InitTypeDef USART_InitStructure;
       
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
       
        // Configure USART1 Tx as alternate function push-pull
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
       
        // Configure USART1 Rx as input floating
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
        GPIO_Init(GPIOA, &GPIO_InitStructure);
       
        // Configure USART1
        USART_InitStructure.USART_BaudRate = 9600;
        USART_InitStructure.USART_WordLength = USART_WordLength_8b;
        USART_InitStructure.USART_StopBits = USART_StopBits_1;
        USART_InitStructure.USART_Parity = USART_Parity_No;
        USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
        USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
        USART_Init(USART1, &USART_InitStructure);
       
        // NVIC configuration
        NVIC_Configuration();
       
        // Enable USART1 Receive and Transmit interrupts
        USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
        USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
       
        // Enable the USART1
        USART_Cmd(USART1, ENABLE);
}

// 中断处理函数
void USART1_IRQHandler(void)
{
        uint16_t temp;
       
        if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
        {
                temp = USART_ReceiveData(USART1);
                USART_SendData(USART1, temp);
        }
}
三、实现效果
  对应上面的原理图，接收是上面2个虚拟终端，发送是下面1个虚拟终端。效果图如下：