User's Manual

CHAPTER 3
Operations at the Application Level
27
of the SET commands have a get form, in which only the subcom-
mand is typed and the emu3ap application returns the requested
information.
SET TIME
DESCRIPTION Sets the internal real-time clock of the emu3ap.
PARAMETERS The time in the following format: dd/mm/yyyy hh:mm:ss (24-hour
clock format).
RETURNS OK or an error message.
REMARKS The year may be sent either in two- or four-letter format (for exam-
ple, 1999 or 99), but the four-letter format is preferred. In addition,
the emu3ap also accepts the year 2000 and years thereafter as
hundreds, for example, 100 for 2000, 101 for 2001, and so forth.
The date/time parameters may be sent with or without leading
zeros. The get variant TIME (with no parameters) returns the cur-
rent date and time of the device.
EXAMPLE set time 4/6/2001 20:1:0
OK
time
Local time is: Sun Jun 4 20:01:07 2001
OK
SET FREQ
DESCRIPTION Sets the operating frequency and step of the gateway (this param-
eter is further transmitted to the A440 Wireless Modem).
PARAMETERS The frequency and step, both in Hz.
RETURNS OK or an error message.
REMARKS The get variant FREQ (with no parameters) returns the actual oper-
ating frequency.
EXAMPLE set freq 433925000 25000
OK
freq
Frequency: 433925000, step: 25000
OK
In the example above, the gateway plus wireless modem combina-
tion operates on 433.925 MHz with channel spacing of 25 kHz.