标题: ARDUINO与esp8266连接测试 [打印本页]
作者: sinement 时间: 2017-10-11 09:53
标题: ARDUINO与esp8266连接测试
注意：ESP8266是3.3V供电的
arduino的D3、D2分别为软串口的RX与TX。
arduino的D3（RX）连接ESP8266的TX。
arduino的D2（TX）连接ESP8266的RX。
arduino的D4连接ESP8266的CH_PD，启用ESP8266时必须设置高电平。
测试程序对应的代码一：
#include <SoftwareSerial.h>
SoftwareSerial mySerial(3,2);
void setup()
{
pinMode(4, OUTPUT);
Serial.begin(9600);
mySerial.begin(9600);
}
void loop()
{
digitalWrite(4,HIGH);
while (Serial.available() > 0) {
mySerial.println(Serial.readString());
delayMicroseconds(100);
}
while (mySerial.available() > 0) {
Serial.println(mySerial.readString());
delayMicroseconds(100);
}
}
测试程序对应的代码二：
#include <SoftwareSerial.h>
#define WIFI_TX 2 //ESP8266 RX
#define WIFI_RX 3 //ESP8266 TX
SoftwareSerial wifi(WIFI_RX, WIFI_TX); //SoftwareSerial(RX, TX)
String _comdata_wifi = ""; //for incoming wifi serial data
void setup() {
Serial.begin(9600);
wifi.begin(9600);
Serial.println("system is ready!");
}
void loop() {
getWifiSerialData();
if(Serial.available()){
String order = "";
while (Serial.available()){
char cc = (char)Serial.read();
order += cc;
delay(2);
}
order.trim();
wifi.println(order);
}
if(_comdata_wifi!=""){
Serial.println(_comdata_wifi);
_comdata_wifi = String("");
}
}
void getWifiSerialData(){
while (wifi.available() > 0){
_comdata_wifi += char(wifi.read()); //get wifi data
delay(4);
}
}
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