ESP8266-TH8
时间: 2024-05-23 11:08:22 浏览: 21
ESP8266-TH8是一种基于ESP8266芯片的温湿度监测模块,可通过WiFi网络连接到互联网,实现实时监测温湿度数据并进行远程控制。该模块具有以下特点:
1. 采用ESP8266芯片,支持802.11b/g/n无线协议;
2. 支持温湿度传感器接口,可直接连接DHT11/DHT22等传感器;
3. 内置电源电路和USB接口,方便供电和调试;
4. 支持多种开源固件,如ESPeasy、Tasmota等,可实现简单易用的Web控制界面。
相关问题
51单片机 esp8266-01sMQTT程序代码
以下是51单片机和esp8266-01s结合使用的MQTT程序代码:
```
#include <reg52.h>
#include <string.h>
#include <stdio.h>
#define uchar unsigned char
#define uint unsigned int
sbit LED = P1^0;
// 定义ESP8266的发送和接收缓冲区
uchar ESP8266_RX_BUF[1024];
uchar ESP8266_TX_BUF[1024];
// 定义MQTT服务器的IP地址和端口号
uchar MQTT_SERVER_IP[] = "192.168.1.100";
uchar MQTT_SERVER_PORT[] = "1883";
// 定义MQTT连接的用户名和密码
uchar MQTT_USERNAME[] = "username";
uchar MQTT_PASSWORD[] = "password";
// 定义MQTT客户端ID和主题
uchar MQTT_CLIENT_ID[] = "client_id";
uchar MQTT_TOPIC[] = "topic";
// 定义MQTT连接和发布消息的命令
uchar MQTT_CONNECT_CMD[] = {0x10, 0x0e, 0x00, 0x06, 'M', 'Q', 'I', 's', 'd', 'p', 0x03, 0x02, 0x00, 0x3c, 0x00};
uchar MQTT_PUBLISH_CMD[] = {0x30, 0x0c, 0x00, 0x04, 't', 'o', 'p', 'i', 'c', 0x00, 0x01, '1', '2'};
// 定义MQTT连接状态和接收到的消息
bit MQTT_CONNECTED = 0;
uchar MQTT_MSG_BUF[1024];
// 定义函数声明
void ESP8266_Init();
void ESP8266_SendCmd(uchar *cmd);
void ESP8266_SendData(uchar *data);
void ESP8266_ReceiveData();
void MQTT_Connect();
void MQTT_Publish(uchar *msg);
void main()
{
ESP8266_Init();
while(1)
{
if(MQTT_CONNECTED)
{
// 如果已经连接MQTT服务器,则发送消息
MQTT_Publish("Hello, MQTT!");
LED = ~LED;
delay(1000);
}
else
{
// 如果未连接MQTT服务器,则尝试连接
MQTT_Connect();
}
}
}
// ESP8266初始化函数
void ESP8266_Init()
{
// 设置波特率为115200
TMOD = 0x20;
TH1 = 0xfd;
TL1 = 0xfd;
TR1 = 1;
// 发送AT指令,检查ESP8266是否正常工作
ESP8266_SendCmd("AT\r\n");
ESP8266_ReceiveData();
// 设置ESP8266为STA模式
ESP8266_SendCmd("AT+CWMODE=1\r\n");
ESP8266_ReceiveData();
// 连接WiFi网络
ESP8266_SendCmd("AT+CWJAP=\"SSID\",\"PASSWORD\"\r\n");
ESP8266_ReceiveData();
}
// ESP8266发送AT指令函数
void ESP8266_SendCmd(uchar *cmd)
{
uint i = 0;
while(cmd[i] != '\0')
{
SBUF = cmd[i];
while(!TI);
TI = 0;
i++;
}
}
// ESP8266发送数据函数
void ESP8266_SendData(uchar *data)
{
uint i = 0;
while(data[i] != '\0')
{
SBUF = data[i];
while(!TI);
TI = 0;
i++;
}
}
// ESP8266接收数据函数
void ESP8266_ReceiveData()
{
uint i = 0;
while(1)
{
if(RI)
{
RI = 0;
ESP8266_RX_BUF[i] = SBUF;
i++;
if(i >= 1024)
{
i = 0;
}
if(strstr(ESP8266_RX_BUF, "OK") != NULL)
{
memset(ESP8266_RX_BUF, 0, sizeof(ESP8266_RX_BUF));
break;
}
}
}
}
// MQTT连接函数
void MQTT_Connect()
{
// 建立TCP连接
ESP8266_SendCmd("AT+CIPSTART=\"TCP\",\"");
ESP8266_SendData(MQTT_SERVER_IP);
ESP8266_SendCmd("\",");
ESP8266_SendData(MQTT_SERVER_PORT);
ESP8266_SendCmd("\r\n");
ESP8266_ReceiveData();
// 发送MQTT连接命令
ESP8266_SendCmd("AT+CIPSEND=");
ESP8266_SendData("22\r\n");
ESP8266_SendData(MQTT_CONNECT_CMD);
ESP8266_ReceiveData();
// 发送MQTT用户名和密码
ESP8266_SendCmd("AT+CIPSEND=");
ESP8266_SendData("32\r\n");
ESP8266_SendData(MQTT_USERNAME);
ESP8266_SendData("\x00");
ESP8266_SendData(MQTT_PASSWORD);
ESP8266_ReceiveData();
// 订阅MQTT主题
ESP8266_SendCmd("AT+CIPSEND=");
ESP8266_SendData("13\r\n");
ESP8266_SendData("\x82\x09");
ESP8266_SendData("\x00\x01");
ESP8266_SendData("\x00\x06");
ESP8266_SendData(MQTT_TOPIC);
ESP8266_SendData("\x00");
ESP8266_ReceiveData();
MQTT_CONNECTED = 1;
}
// MQTT发布消息函数
void MQTT_Publish(uchar *msg)
{
// 发送MQTT发布命令
ESP8266_SendCmd("AT+CIPSEND=");
ESP8266_SendData("16\r\n");
ESP8266_SendData(MQTT_PUBLISH_CMD);
// 发送消息内容
uint len = strlen(msg);
ESP8266_SendCmd("AT+CIPSEND=");
ESP8266_SendData("2\r\n");
ESP8266_SendData((uchar *)&len);
ESP8266_SendCmd("\r\n");
ESP8266_SendData(msg);
ESP8266_ReceiveData();
}
相关问题:
esp8266-01s控制舵机基于51单片机代码
下面是基于51单片机控制ESP8266-01S模块控制舵机的示例代码:
```c
#include <reg52.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define BAUD_RATE 9600
sbit servo_pin = P1^0;
void delay(unsigned int ms)
{
unsigned int i, j;
for(i = ms; i > 0; i--)
{
for(j = 110; j > 0; j--);
}
}
void uart_init()
{
TMOD &= 0x0F;
TMOD |= 0x20;
SCON = 0x50;
TH1 = 256 - (11059200 / 12 / BAUD_RATE);
TL1 = TH1;
TR1 = 1;
ES = 1;
EA = 1;
}
void uart_send(char ch)
{
SBUF = ch;
while(TI == 0);
TI = 0;
}
void uart_send_string(char *str)
{
while(*str != '\0')
{
uart_send(*str++);
}
}
void uart_receive() interrupt 4 using 1
{
static char buffer[32];
static uint8_t index = 0;
char ch = SBUF;
if(ch == '\r')
{
buffer[index] = '\0';
index = 0;
if(strcmp(buffer, "open") == 0)
{
servo_pin = 1;
uart_send_string("servo opened\r\n");
}
else if(strcmp(buffer, "close") == 0)
{
servo_pin = 0;
uart_send_string("servo closed\r\n");
}
else
{
uart_send_string("unknown command\r\n");
}
}
else
{
buffer[index++] = ch;
}
}
void main()
{
uart_init();
while(1)
{
delay(100);
}
}
```
这个代码实现了通过串口控制舵机的开关,当接收到“open”时,打开舵机,当接收到“close”时,关闭舵机。详细说明见注释。
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