配置AT32F407单片机的串口通信模块,波特率为9600、数据位8、校验位0和停止位1等参数。
时间: 2024-02-03 10:12:48 浏览: 57
AT32F407单片机的串口通信模块配置如下:
1. 使能串口时钟
```c
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); // 使能GPIOA时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); // 使能USART2时钟
```
2. 配置串口引脚
```c
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_USART2); // PA2 复用为 USART2_TX
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2); // PA3 复用为 USART2_RX
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
```
3. 配置串口参数
```c
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 9600; // 波特率为9600
USART_InitStructure.USART_WordLength = USART_WordLength_8b; // 数据位为8
USART_InitStructure.USART_StopBits = USART_StopBits_1; // 停止位为1
USART_InitStructure.USART_Parity = USART_Parity_No; // 校验位为0
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART2, &USART_InitStructure);
```
4. 使能串口
```c
USART_Cmd(USART2, ENABLE);
```
完整代码如下:
```c
#include "stm32f4xx.h"
void USART_Config(void)
{
// 使能GPIOA时钟
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
// 使能USART2时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// PA2 复用为 USART2_TX
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_USART2);
// PA3 复用为 USART2_RX
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 9600; // 波特率为9600
USART_InitStructure.USART_WordLength = USART_WordLength_8b; // 数据位为8
USART_InitStructure.USART_StopBits = USART_StopBits_1; // 停止位为1
USART_InitStructure.USART_Parity = USART_Parity_No; // 校验位为0
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART2, &USART_InitStructure);
USART_Cmd(USART2, ENABLE);
}
```
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