Siemens AC65 Benutzerhandbuch

5.9 System Out

s

wm_java_usersguide_v12

Page 41 of 123

2008-02-25

Confidential / Released

There is a small set of special Java AT commands:
•

AT^SJRA, start a Java application

•

AT^SJNET, configuration of Java networking connections

•

AT^SJOTAP, start and configuration of over the air provisioning

•

AT^SJSEC, security configuration 

Refer to the AT command Set 

.

Under Java, the AutoExec function’s AT command execution has some restrictions (see 

 for

details on the AutoExec function). If an AT command is executed, neither URC nor command
response are indicated to the Java application. Therefore, it is recommended to use the
AutoExec function under Java only with commands that shut down the module, e.g., with
AT+CFUN=0,1, as a watch dog. Any other AT command execution should be implemented with
Java means and the ATCommand class.

Any output printed to the System.out stream by a Java application can be redirected to one of
the serial interfaces, a file, a "NULL" device (i.e. the output will be discarded) or a UDP socket
for using the debugger from an IDE. The configuration can be done at any time using the AT
command AT^SCFG (see 

 for details) and is non-volatile. 

System.out can be written to any of the serial interfaces ASC0, ASC1 or USB. If System.out is
redirected to one of the interfaces used for the Java CommConnection, the interface will be
shared between System.out and the CommConnection. This will result in mixed output, if data
is written to the CommConnections OutputStream and something is printed via System.out at
the same time. 

Using System.out and CommConnection on the same serial interface may be done if a device
connected to the serial port is only transmitting data to the module. It is recommended to
ensure already in the HW design that output from the module cannot be transferred to a con-
nected device.