У меня Raspberry Pi работает как точка доступа Wi-Fi, а Arduino Uno пытается получить от него данные с помощью модуля ESP8266.
Это код моего приемника для Arduino:
#include <SoftwareSerial.h>
#include <SerialESP8266wifi.h>#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 debugString 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;
}
}
}
Когда я выполняю, на последовательном мониторе отображается:
OK ARFa C⸮C⸮j⸮H⸮AT + AWJAP ="RPi", # raspberry"WIFI DISCONNECT WIFICONNECVED WIFI GOT IP
OK AT + CIFSR
+ CIFSR: STAIP,"192.168.50.13" + CIFQR: STAMAC,"2c: 3a: eAT + CIPSTART = 4,"TCP","192.0n8.50.1", 121l
Тип ссылки ERROR
ISC DHCP-сервер Raspberry Pi:
wlan0: STA 2c: 3a: e8: 4e: bf: 70 RADIUS: начало сеанса учета
Я также ссылался на эту тему SO , но не повезло.