STM32F103RCT6配置串口1引脚为PC8和PC9
时间: 2023-12-03 22:44:06 浏览: 143
配置串口1引脚为PC8和PC9需要进行以下步骤:
1. 首先,需要将GPIOC的时钟使能,可以通过RCC_APB2PeriphClockCmd函数来实现,代码如下:
```
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
```
2. 然后,需要将PC8和PC9引脚配置为复用推挽输出模式,可以通过GPIO_InitStructure结构体来配置,代码如下:
```
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
```
3. 最后,需要配置串口1的基本参数,包括波特率、数据位、停止位和校验位等,可以通过USART_InitStructure结构体来配置,代码如下:
```
USART_InitTypeDef USART_InitStructure;
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(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
```
完整的代码如下:
```
#include "stm32f10x.h"
int main(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
USART_InitTypeDef USART_InitStructure;
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(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
while(1);
}
```
需要注意的是,如果需要使用其他串口或引脚,请将代码中的USART1和PC8/PC9修改为对应的串口和引脚即可。
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