N O V A T E L W I R E L E S S T E C H N O L O G I E S L T D .
3 1
A T C o m m a n d S p e c i f i c a t i o n - E x p e d i t e a n d M e r l i n
W i r e l e s s I P M o d e m s
Programmable I/O
Description:
Commands used to configure the General Purpose I/O lines for predefined functions. Any of these signals
can be associated with any of the GPIO pins on the interface. However, due to the nature of the power up
state of these pins, recommendations on which signals should be associated with which pins will be
provided.
Format:
All changes to the state of the GPIO signal associations will only be allowed while in Program Mode of the
modem. Also, any changes will only take place only upon device power up.
To enter program mode:
at\aprog,<password>
ATIO1?
To query the current setting of GPIO1
ATIO1=<code>
To set the operating function of GPIO1
ATIO2?
To query the current setting of GPIO2
ATIO2=<code>
To set the operating function of GPIO2
ATIO3?
To query the current setting of GPIO3
ATIO3=<code>
To set the operating function of GPIO3
ATIO4?
To query the current setting of GPIO4
ATIO4=<code>
To set the operating function of GPIO4
ATIO5?
To query the current setting of GPIO5
ATIO5=<code>
To set the operating function of GPIO5
ATIO6?
To query the current setting of GPIO6
ATIO6=<code>
To set the operating function of GPIO6
To save the profile:
at&w
Default Configuration:
OEM:
Pin
Type
Signal
GPIO1
O
RS232 Control
GPIO2
O
Service Indication
GPIO3
O
Ready
GPIO4
O
RF All
GPIO5
I
Power Boost
GPIO6
O
Ring
Minstrel III:
Pin
Type
Signal
GPIO1
O
RS232 Control
GPIO2
O
Service Indication
GPIO3
O
Hot Sync / Alert
GPIO4
O
Message Waiting Indication
GPIO5
I
Power Down
GPIO6
O
Low Battery Indication