可以帮我写一个关于stm32f103c8t6和esp8266WiFi模块与手机APP链接的代码吗
时间: 2023-06-15 09:04:15 浏览: 216
好的,下面是一个简单的示例代码,可以实现STM32F103C8T6和ESP8266 WiFi模块通过WiFi与手机APP进行通信。
首先需要使用STM32F103C8T6的UART串口与ESP8266模块进行通信。以下为STM32F103C8T6与ESP8266模块的连接方式:
| STM32F103C8T6 | ESP8266 |
| ------------- | ------- |
| PA9 (TX) | RX |
| PA10 (RX) | TX |
| GND | GND |
| 3.3V | VCC |
| PB0 | RST |
接下来需要在STM32F103C8T6中编写代码实现连接WiFi并进行通信。以下为示例代码:
```c
#include "stm32f10x.h"
#include "stdio.h"
#include "string.h"
#define WIFI_SSID "WiFi名称"
#define WIFI_PASSWORD "WiFi密码"
void USART1_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &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(USART1, &USART_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
void USART1_IRQHandler(void)
{
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
char data = USART_ReceiveData(USART1);
USART_SendData(USART1, data);
}
}
void ESP8266_SendCommand(char *command, char *response, uint32_t timeout)
{
char buffer[100];
char *found;
memset(buffer, 0, sizeof(buffer));
USART_SendData(USART1, '\r');
delay_us(100);
USART_SendData(USART1, '\n');
delay_us(100);
USART_SendData(USART1, '\r');
delay_us(100);
USART_SendData(USART1, '\n');
delay_us(100);
USART_SendData(USART1, command);
delay_us(100);
USART_SendData(USART1, '\r');
delay_us(100);
USART_SendData(USART1, '\n');
delay_us(100);
uint32_t startTime = HAL_GetTick();
while ((HAL_GetTick() - startTime) < timeout)
{
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
char data = USART_ReceiveData(USART1);
strncat(buffer, &data, 1);
found = strstr(buffer, response);
if (found != NULL)
{
return;
}
}
}
}
void ESP8266_Init(void)
{
ESP8266_SendCommand("AT+RST", "ready", 3000);
ESP8266_SendCommand("AT+CWMODE=1", "OK", 1000);
ESP8266_SendCommand("AT+CWJAP=\"" WIFI_SSID "\",\"" WIFI_PASSWORD "\"", "OK", 10000);
}
void ESP8266_SendData(char *data)
{
char command[100];
sprintf(command, "AT+CIPSEND=%d", strlen(data));
ESP8266_SendCommand(command, ">", 1000);
ESP8266_SendCommand(data, "SEND OK", 1000);
}
int main()
{
USART1_Init();
ESP8266_Init();
while (1)
{
ESP8266_SendData("Hello World!");
delay_ms(5000);
}
}
```
以上代码中,ESP8266_SendCommand()函数用于发送AT指令并接收ESP8266模块的应答。ESP8266_Init()函数用于初始化ESP8266模块并连接WiFi网络。ESP8266_SendData()函数用于发送数据到手机APP。
其中,需要将WIFI_SSID和WIFI_PASSWORD分别替换为你的WiFi名称和密码。
最后,需要在手机APP中使用TCP/IP协议与ESP8266模块进行通信。具体实现方式可以参考以下链接:
[使用TCP/IP协议与ESP8266模块进行通信](https://blog.csdn.net/weixin_43742700/article/details/104198283)
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