flush()
Description
flush()
clears the modem memory of any sent messages once all outgoing characters have been sent.
flush()
inherits from the Stream utility class.
Syntax
SMS.flush()
Parameters
none
Returns
none
Example
/* SMS receiver This sketch, for the Arduino GSM shield, waits for SMS messages and displays them through the Serial port. Circuit: * GSM shield created 25 Feb 2012 by Javier Zorzano / TD This example is in the public domain. */ // libraries #include <GSM.h> // PIN Number #define PINNUMBER "" // initialize the library instance GSM gsmAccess; // include a 'true' parameter for debug enabled GSM_SMS sms; char remoteNumber[20]; // Holds the emitting number void setup() { // initialize serial communications Serial.begin(9600); Serial.println("SMS Messages Receiver"); // connection state boolean notConnected = true; // Start GSM shield // If your SIM has PIN, pass it as a parameter of begin() in quotes while(notConnected) { if(gsmAccess.begin(PINNUMBER)==GSM_READY) notConnected = false; else { Serial.println("Not connected"); delay(1000); } } Serial.println("GSM initialized"); Serial.println("Waiting for messages"); } void loop() { char c; // If there are any SMSs available() if (sms.available()) { Serial.println("Message received from:"); // Get remote number sms.remoteNumber(remoteNumber, 20); Serial.println(remoteNumber); // This is just an example of message disposal // Messages starting with # should be discarded if(sms.peek()=='#') { Serial.println("Discarded SMS"); sms.flush(); } // Read message bytes and print them while(c=sms.read()) Serial.print(c); Serial.println("\nEND OF MESSAGE"); // delete message from modem memory sms.flush(); Serial.println("MESSAGE DELETED"); } delay(1000); }
See also
- GSM_SMS
- beginSMS()
- ready()
- endSMS()
- available()
- remoteNumber()
- read()
- write()
- print()
- peek()
The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.