CSDN上有stm32f103c8t6的串口中断例程吗？

是的，CSDN上有很多关于STM32F103C8T6的串口中断例程。你可以在CSDN上搜索“STM32F103C8T6 串口中断”来查找相关的例程。以下是一个简单的例程，可以在串口接收到数据时触发中断，并且在中断服务程序中将接收到的数据回传：

#include "stm32f10x.h"
#include <stdio.h>

#define USARTx USART1

void USART_Configuration(void)
{
  USART_InitTypeDef USART_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);

  /* Configure USART1 Rx (PA10) 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 Tx (PA9) as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure USART1 */
  USART_InitStructure.USART_BaudRate = 115200;
  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(USARTx, &USART_InitStructure);

  /* Enable USART1 Receive interrupt */
  USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE);

  /* Configure and enable USART1 interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Enable USART1 */
  USART_Cmd(USARTx, ENABLE);
}

void USART1_IRQHandler(void)
{
  if (USART_GetITStatus(USARTx, USART_IT_RXNE) != RESET)
  {
    char received_char = USART_ReceiveData(USARTx);
    USART_SendData(USARTx, received_char);
    while (USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
    USART_ClearITPendingBit(USARTx, USART_IT_RXNE);
  }
}

int main(void)
{
  USART_Configuration();

  while (1)
  {
    // Do something else here
  }
}

这个例程中，我们使用了USART1作为串口，配置了串口的GPIO引脚、波特率和中断。在中断服务函数中，我们读取了接收到的数据，并将其回传。您可以根据自己的需求修改此例程。