Sim900A ricevere Sms.

Salve, con questa libreria riesco ad inviare sms ma non a riceverli .

[code]
#define TINY_GSM_MODEM_SIM900
#include <TinyGsmClient.h>
#define SerialAT Serial3
TinyGsm modem(SerialAT);
void setup() {
  SerialAT.begin(115200);//sim900
  delay(6000);
  modem.restart();
  delay(50);
}

void loop() {

  modem.sendSMS("338******", String("ALLARME!"));
 
}

[/code]

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