stm32f103rct6引脚串口使能初始化

对于这个问题，我可以为您提供一个简单的初始化代码，以使能STM32F103RCT6的串口引脚：

#include "stm32f103xx.h"

void USART1_Init(void)
{
    RCC->APB2ENR |= RCC_APB2ENR_USART1EN;     // enable USART1 clock
    RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;       // enable GPIOA clock

    GPIOA->CRH |= GPIO_CRH_MODE9_0;           // set PA9 as TX pin
    GPIOA->CRH |= GPIO_CRH_CNF9_1;            // set PA9 as AF push-pull

    GPIOA->CRH |= GPIO_CRH_MODE10_0;          // set PA10 as RX pin
    GPIOA->CRH &= ~GPIO_CRH_CNF10;            // set PA10 as input floating

    USART1->BRR = 72000000/9600;              // set baud rate

    USART1->CR1 |= USART_CR1_TE | USART_CR1_RE;    // enable transmit and receive
    USART1->CR1 |= USART_CR1_UE;              // enable USART1
}

请注意，这只是一个简单的初始化代码示例，如果您需要更复杂的串口通信功能，请寻求其他可靠的资源并适当修改代码。