我有一个Raspberry Pi作为WiFi热点和Arduino Uno尝试使用ESP8266模块从中获取数据。

这是我的Arduino接收器代码：

#include

#include

#define sw_serial_rx_pin 4 // Connect this pin to TX on the esp8266

#define sw_serial_tx_pin 6 // Connect this pin to RX on the esp8266

#define esp8266_reset_pin 5 // Connect this pin to CH_PD on the esp8266, not reset. (let reset be unconnected)

SoftwareSerial swSerial(sw_serial_rx_pin, sw_serial_tx_pin);

// the last parameter sets the local echo option for the ESP8266 module..

SerialESP8266wifi wifi(swSerial, swSerial, esp8266_reset_pin, Serial);//adding Serial enabled local echo and wifi debug

String inputString;

boolean stringComplete = false;

unsigned long nextPing = 0;

void setup() {

inputString.reserve(20);

swSerial.begin(9600);

Serial.begin(9600);

while (!Serial)

;

Serial.println("Starting wifi");

wifi.setTransportToTCP();// this is also default

// wifi.setTransportToUDP();//Will use UDP when connecting to server, default is TCP

wifi.endSendWithNewline(true); // Will end all transmissions with a newline and carriage return ie println.. default is true

wifi.begin();

wifi.connectToAP("RPi", "raspberry");

wifi.connectToServer("192.168.50.1", "1234");

wifi.send(SERVER, "ESP8266 test app started");

}

void loop() {

//Make sure the esp8266 is started..

if (!wifi.isStarted())

wifi.begin();

//Send what you typed in the arduino console to the server

static char buf[20];

if (stringComplete) {

inputString.toCharArray(buf, sizeof buf);

wifi.send(SERVER, buf);

inputString = "";

stringComplete = false;

}

//Send a ping once in a while..

if (millis() > nextPing) {

wifi.send(SERVER, "Ping ping..");

nextPing = millis() + 10000;

}

//Listen for incoming messages and echo back, will wait until a message is received, or max 6000ms..

WifiMessage in = wifi.listenForIncomingMessage(6000);

if (in.hasData) {

if (in.channel == SERVER)

Serial.println("Message from the server:");

else

Serial.println("Message a local client:");

Serial.println(in.message);

//Echo back;

wifi.send(in.channel, "Echo:", false);

wifi.send(in.channel, in.message);

nextPing = millis() + 10000;

}

//If you want do disconnect from the server use:

// wifi.disconnectFromServer();

}

//Listen for serial input from the console

void serialEvent() {

while (Serial.available()) {

char inChar = (char)Serial.read();

inputString += inChar;

if (inChar == '\n') {

stringComplete = true;

}

}

}

执行时，串口监视器显示：

OKARFaC⸮C⸮j⸮H⸮AT+ AWJAP =＆＃34; RPi＆＃34;，＃raspberry＆＃34; WIFI断开WIFI

连接的WIFI GOT IP

OK AT + CIFSR

+ CIFSR：STAIP，＆＃34; 192.168.50.13＆＃34;

+ CIFQR：STAMAC，＆＃34;图2c：图3a：吃+ CIPSTART = 4＆＃34; TCP＆＃34;＆＃34; 192.0n8.50.1＆＃34;，121升

链接类型错误

Raspberry Pi的ISC DHCP服务器：

wlan0：STA 2c：3a：e8：4e：bf：70 RADIUS：开始计费会话

5A3B2C85-000000E9 wlan0：STA 2c：3a：e8：4e：bf：70 WPA：成对密钥

握手完成(RSN)