STM32F103C8T6微控制器的USART2串口输出字符串示例

以下是STM32F103C8T6微控制器的USART2串口输出字符串示例：

#include "stm32f10x.h"

USART_InitTypeDef USART_InitStructure;

void USART2_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

//启动GPIOA时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
//引脚配置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
//启动USART2时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
//USART2配置
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_Tx;
USART_Init(USART2, &USART_InitStructure);
USART_Cmd(USART2, ENABLE);
}

void PrintString(USART_TypeDef* USARTx, char* string)
{
while (*string)
{
USART_SendData(USARTx, *string++);
while (USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
}
}

int main(void)
{
USART2_Init();
PrintString(USART2, "Test string.");
}