stm32f103c8t6与esp8266通信代码
时间: 2023-08-27 10:06:51 浏览: 118
stm32f103c8t6代码
5星 · 资源好评率100%
以下是一个简单的示例代码,用于stm32f103c8t6与esp8266之间通过UART进行通信。在此示例中,stm32f103c8t6作为主设备,向esp8266发送AT指令,并等待其响应。
```c
#include "stm32f10x.h"
#define ESP_USART USART1
#define ESP_USART_RCC RCC_APB2Periph_USART1
#define ESP_USART_GPIO_RCC RCC_APB2Periph_GPIOA
#define ESP_USART_GPIO GPIOA
#define ESP_USART_TX GPIO_Pin_9
#define ESP_USART_RX GPIO_Pin_10
void ESP_USART_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(ESP_USART_RCC | ESP_USART_GPIO_RCC, ENABLE);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = ESP_USART_TX;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(ESP_USART_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = ESP_USART_RX;
GPIO_Init(ESP_USART_GPIO, &GPIO_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_Tx | USART_Mode_Rx;
USART_Init(ESP_USART, &USART_InitStructure);
USART_Cmd(ESP_USART, ENABLE);
}
void ESP_USART_SendString(char *str)
{
while (*str)
{
while (!(ESP_USART->SR & USART_FLAG_TXE));
USART_SendData(ESP_USART, *str++);
}
}
void ESP_USART_SendATCommand(char *command)
{
ESP_USART_SendString(command);
while (USART_GetFlagStatus(ESP_USART, USART_FLAG_RXNE) == RESET);
char response[100];
uint8_t i = 0;
while (USART_GetFlagStatus(ESP_USART, USART_FLAG_RXNE))
{
response[i++] = USART_ReceiveData(ESP_USART);
}
response[i] = '\0';
// 处理响应
}
int main(void)
{
ESP_USART_Config();
while (1)
{
ESP_USART_SendATCommand("AT\r\n");
// 延时一段时间
}
}
```
在此示例中,我们使用USART1作为与esp8266通信的串口,并将其配置为115200波特率,8位数据位,1位停止位和无奇偶校验。使用ESP_USART_SendATCommand函数发送AT指令,并等待esp8266的响应。在响应接收完成后,我们可以对其进行处理,例如检查响应是否为“OK”等。
请注意,此代码仅供参考,您需要根据您的实际硬件和需求进行修改。
阅读全文