Library for handling and managing network connections by providing keep-alive functionality and automatic reconnection in case of connection-loss. It supports the following boards:
- WiFi:
MKR 1000,MKR WiFi 1010,Nano 33 IoT,Portenta H7,Nano RP2040 Connect,Nicla Vision,OPTA WiFi,GIGA R1 WiFi,Portenta C33,UNO R4 WiFi,Nano ESP32,ESP8266,ESP32 - GSM:
MKR GSM 1400 - 5G:
MKR NB 1500 - LoRa:
MKR WAN 1300/1310 - Ethernet:
Portenta H7+Vision Shield Ethernet,Max Carrier,Breakout,Portenta Machine Control,OPTA WiFi,OPTA RS485,OPTA Lite,Portenta C33+Vision Shield Ethernet
#include <Arduino_ConnectionHandler.h>
/* ... */
#if defined(BOARD_HAS_ETHERNET)
EthernetConnectionHandler conMan;
#elif defined(BOARD_HAS_WIFI)
WiFiConnectionHandler conMan("SECRET_SSID", "SECRET_PASS");
#elif defined(BOARD_HAS_GSM)
GSMConnectionHandler conMan("SECRET_PIN", "SECRET_APN", "SECRET_GSM_LOGIN", "SECRET_GSM_PASS");
#elif defined(BOARD_HAS_NB)
NBConnectionHandler conMan("SECRET_PIN", "SECRET_APN", "SECRET_GSM_LOGIN", "SECRET_GSM_PASS");
#elif defined(BOARD_HAS_LORA)
LoRaConnectionHandler conMan("SECRET_APP_EUI", "SECRET_APP_KEY");
#endif
/* ... */
void setup() {
Serial.begin(9600);
while(!Serial) { }
setDebugMessageLevel(DBG_INFO);
conMan.addCallback(NetworkConnectionEvent::CONNECTED, onNetworkConnect);
conMan.addCallback(NetworkConnectionEvent::DISCONNECTED, onNetworkDisconnect);
conMan.addCallback(NetworkConnectionEvent::ERROR, onNetworkError);
}
void loop() {
/* The following code keeps on running connection workflows on our
* ConnectionHandler object, hence allowing reconnection in case of failure
* and notification of connect/disconnect event if enabled (see
* addConnectCallback/addDisconnectCallback) NOTE: any use of delay() within
* the loop or methods called from it will delay the execution of .check(),
* which might not guarantee the correct functioning of the ConnectionHandler
* object.
*/
conMan.check();
}
/* ... */
void onNetworkConnect() {
Serial.println(">>>> CONNECTED to network");
}
void onNetworkDisconnect() {
Serial.println(">>>> DISCONNECTED from network");
}
void onNetworkError() {
Serial.println(">>>> ERROR");
}