Specifications

WM_PRJ_Q2501_PTS_001 – 003
March 2004
© 2003 All rights reserved
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1.7 Operating modes
1.7.1 System modes
Modes Functions
GSM/GPRS and GPS ON
Default Configuration
Both GSM/GPRS and GPS features are available.
This is the default configuration at module power
on.
GSM/GPRS only
Only the GSM/GPRS feature is available.
The GPS feature is OFF.
GPS only
Only the GPS feature is available.
The GSM/GPRS feature is OFF.
(in fact, the GSM µP is in idle state. Since the GPS
is managed by the GSM µP, it can be totally
switched off)
The choice between these three possible system modes is available by software
or hardware. See Specific AT commands for GPS management document [5] for
details.
1.7.2 Serial links configuration
Modes Functions
External mode
Default
configuration
GPS is controlled only by the customer application using
UBX protocol and NMEA frames are retrieved on the GPS
main serial link only. There is no other way to retrieve GPS
information.
GPS Auxiliary serial link is used for UBX protocol only.
GSM/GPRS is controlled by AT Commands on the GSM
main serial link. The GSM auxiliary serial link is available
for use by application software (with Open AT for example)
WISMO Q2501
(DCE)
Application
(DTE)
GSM/GPRS AT Commands
GSM Main Serial Link
GSM Auxiliary Serial Link
GPS Main Serial Link
Available for OpenAT application
NMEA Frames
& UBX protocol