send-sms.py

#
# AT commands ref :http://www.fccps.cz/img.asp?attid=24590
# credit to: https://gist.github.com/pmarti/11120153
import serial
from smspdu import SMS_SUBMIT

def send_text(number, text):
	# encode the SMS
    p = SMS_SUBMIT.create('sender', number, text)
    
    #set pdu_length
    pdu_length = len(p.toPDU())/2
    #set pdu
    pdu = p.toPDU()
    
    # open the modem port (hard coded COM port)
    ser = serial.Serial("COM12",9600, timeout=1)
    # write the PDU length and wait 1 second till the
    # prompt appears (a more robust implementation
    # would wait till the prompt appeared)
    ser.write('ATI\r')
    print ser.readlines()
    ser.write('AT+CMGF=0\r')
    print ser.readlines()
    ser.write('AT+CMGS=%d\r' % pdu_length)
    print ser.readlines()
    # write the PDU and send a Ctrl+z escape
    ser.write('%s\x1a' % pdu)
    print ser.readlines()
    ser.close()
 
send_text('+97212654789', 'hey how are you?')