python - How can I send an SMS via AT command with Zoom 7.2m Tri-Band USB Modem? -

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i trying make simple python 2.6 application on osx 10.6.6 can send , receive sms on zoom 7.2m (3g) usb modem.

on plugging usb modem, no tty or cu sessions seem created. have run modem software initiate following sessions;

cu.ljadeviceinterface2621 cu.ljadiagconnector2620 cu.ljamobileconnector2622 tty.ljadeviceinterface2621 tty.ljadiagconnector2620 tty.ljamobileconnector2622

after "fun", seems session can read , write "cu.ljadeviceinterface2621". on attempting connect tty instance of this, error -

serial.serialutil.serialexception: not open port /dev/tty.ljadeviceinterface2621: [errno 16] resource busy: '/dev/tty.ljadeviceinterface2621'

thats fine though - @ least have work with, cu equivalent.

my script follows;

            ser = serial.serial("/dev/cu.ljadeviceinterface2621", 9600, timeout=1)              print "setting dtr..."             ser.setdtr(true)              sleep(3)             print "turning off dtr..."             ser.setdtr(false)             searching = true              ser.setdtr(true)             while searching:                     print "write instruction..."                     txt=raw_input()                     if txt.find("zz")>-1:                             txt=txt.replace("zz",chr(13))                     ser.write(txt)              ser.close()

now, have script monitoring messages on "cu.ljadeviceinterface2621". script follows;

            ser = serial.serial("/dev/cu.ljadeviceinterface2621", 9600, timeout=1)              print "attempting search."             while true:                     line = ser.readline()                     print ">", line

with these scripts both running, in write code, enter following lines;

(note: zz input replaced ctrl-z via write script above - chr(13))

at+cmgf=1zz [press enter commit write]

ok

at+cmgw="+447725123123"\r\n [press enter commit write]

error

i should writing text of message, followed ctrl-z (chr(13) immediate error.

the usb modem has valid sim, credit, has signal, can send text zoom modem software (this works in pdu mode - modem support text mode, per at+cmgf=? command) , receive messages.

any ideas?

happy provide more information needed, stu

also remember there many projects out there task (pysms 1 of them)


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