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discover esp8266 in local network
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| // discover esp8266 in local network | |
| // 29.01.2020 | |
| #include"WiFiUdp.h" | |
| #include"ESP8266WiFi.h" | |
| #defineDISCOVERY_MESSAGE "8266_DISCOVERY" | |
| #defineDEBUG | |
| constuint16_techoPort=8266; | |
| charinString[255]; | |
| //char replyString[] = "{name:\"led time\", \"version:1.8\", \"description\":\"часи\", \"ip\":\"192.168.1.1\", \"mac\":\"11.11.11.11.11\"}"; | |
| charreplyString[255]; | |
| WiFiUDPresponser; | |
| voidesp_discovery_config(constchar*projectName,constchar*version,constchar*description){//set reply | |
| snprintf(replyString,255,"{\"name\":\"%s\",\"version\":\"%s\",\"description\":\"%s\",\"ip\":\"%s\",\"mac\":\"%s\"}",projectName,version,description,WiFi.localIP().toString().c_str(),WiFi.macAddress().c_str()); | |
| responser.begin(echoPort); | |
| #ifdefDEBUG | |
| Serial.println("FREE RAM: "+ESP.getFreeHeap()); | |
| #endif | |
| } | |
| voidesp_discovery_handle(){//in loop() | |
| intpacketSize=responser.parsePacket(); | |
| if (packetSize) { | |
| #ifdefDEBUG | |
| Serial.print("Received packet of size "); | |
| Serial.println(packetSize); | |
| Serial.print("From "); | |
| #endif | |
| IPAddressremoteIp=responser.remoteIP(); | |
| #ifdefDEBUG | |
| Serial.print(remoteIp); | |
| Serial.print(", port "); | |
| Serial.println(responser.remotePort()); | |
| #endif | |
| intlen=responser.read(inString,255); | |
| if (len>0) { | |
| inString[len]=0; | |
| } | |
| #ifdefDEBUG | |
| Serial.println("Contents:"); | |
| Serial.println(inString); | |
| #endif | |
| if (strcmp(inString,DISCOVERY_MESSAGE)==0){ | |
| responser.beginPacket(responser.remoteIP(),responser.remotePort()); | |
| responser.write(replyString); | |
| responser.endPacket(); | |
| } | |
| } | |
| } |
void setup(){
esp_discovery_config("project name", "1.0", "description");
}
void loop(){
esp_discovery_handle();
}
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