I am using a Huawei E160 UMTS stick.
Sending of messages seems to work out of the box but
receiving did not work for me (except when system property
smslib.nocmti was set)
I have digged a bit and found the following reasons:
a) This UMTS stick creates two virtual ttys - the +CMTI indication
can only be received on the second (on Linux it's usually
/dev/ttyUSB1)
b) a typical debug log of the incomin +CMTI is:
DEBUG 19:55:18.314 Logger.logDebug GTW: /dev/ttyUSB1: BUFFER: ^BOOT:
23280370,0,0,0,75
^BOOT:23280370,0,0,0,75
^RSSI:14
+CMTI: "SM",5
^RSSI:14
OK
DEBUG 19:55:18.316 Logger.logDebug GTW: /dev/ttyUSB1: RECV :^BOOT:
23280370,0,0,0,75(cr)^BOOT:23280370,0,0,0,75(cr)^RSSI:14(cr)+CMTI:
"SM",5(cr)^RSSI:14(cr)OK(cr)
Interesting is: the +CMTI is not really spontaneout - instead it is
only sent after
smslib executes it's keepalive AT command. And - worse - the +CMTI
comes in
after other messages (^BOOT, ^RSSI and before the OK.
Looking at the code in AModemDriver and the patterns defined in
ATHandler, we see
that the +CMTI will not be recognized when coming in as part of such a
sequence.
An easy fix would be to enhance the patterns of ATHandler so that they
allow
arbitrary data including newlines before the +CMTI. I did this by
defining a
ATHandler_Huawei that exactly does that: prefix all the patterns with
"(.|\\s)*"
Using this fix, incoming messages work - provided I create the gateway
with manufacturer set to "Huawei":
new SerialModemGateway(portName, portName, 57600, "Huawei",
"E160");
May I propose to add this or an equivalent fix to the smslib package
itself?
Here is the ATHandler_Huawei.java:
public class ATHandler_Huawei
extends ATHandler
{
/**
*/
public ATHandler_Huawei(ModemGateway myGateway)
{
super(myGateway);
for (int i = 0; i < terminators.length; i++) {
terminators[i] = "(.|\\s)*"+terminators[i];
}
}
}
BTW: since the +CMTI messages come in only after doing a keepalive,
it seems wise to increase keepalive frequency, e.g.:
System.setProperty("smslib.serial.keepalive", "5");
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