Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 233 Ver. 1.00 – 10/29/2008
4.4.4 $IOGPA GPIO Byte Control
(continued)
Reference N/A
Standard Scope Optional
Enfora Implementation Scope Full
Notes 20 Digits where left bit represents GPIO 1
and right most bit represents GPIO 20. A
User can choose to only enter the first 8
GPIO, as in the example below.
Example:
at$iogpa=11111111
OK
at$iogpa?
$IOGPA: 11111111000000000000 11111111000000000000
OK
at$iogpa=10101010101010101010
OK
at$iogpa?
$IOGPA: 10101010101010101010 10101010101010101010
OK