write()
Description
Writes a character to a SMS message.
Syntax
SMS.write(val)
Parameters
val
: a character to send in the message
Returns
byte – write()
will return the number of bytes written, though reading that number is optional
Example
#include <GSM.h> #define PINNUMBER "" // initialize the library instance GSM gsmAccess; // include a 'true' parameter for debug enabled GSM_SMS sms; void setup() { // initialize serial communications Serial.begin(9600); Serial.println("SMS Messages Sender"); // 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"); } void loop() { Serial.print("Enter a mobile number: "); char remoteNumber[20]; // telephone number to send sms readSerial(remoteNumber); Serial.println(remoteNumber); // sms text Serial.print("Now, enter SMS content: "); char txtMsg[200]; readSerial(txtMsg); Serial.println("SENDING"); Serial.println(); Serial.println("Message:"); Serial.println(txtMsg); // send the message sms.beginSMS(remoteNumber); sms.print(txtMsg); sms.endSMS(); Serial.println("\nCOMPLETE!\n"); } /* Read input serial */ int readSerial(char result[]) { int i = 0; while(1) { while (Serial.available() > 0) { char inChar = Serial.read(); if (inChar == '\n') { result[i] = '\0'; Serial.flush(); return 0; } if(inChar!='\r') { result[i] = inChar; i++; } } } }
See also
- GSM_SMS
- beginSMS()
- ready()
- endSMS()
- available()
- remoteNumber()
- read()
- print()
- peek()
- flush()
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.