Manual

GE863-GPS Software User Guide
1vv0300724 Rev. 3 - 05/07/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 80 of 122
For example:
1- Let's assume you want to set GPIO3 pin as Output and you want it to be in LOW status:
command:
AT#GPIO=3,0,1<cr>
response:
OK
In this case, the GPIO3 pin was successfully put in output direction and its status has been set to
LOW.
3.6.1.2 Setting GPIO pin as INPUT
When you set a GPIO as input, you must specify also a dummy value for the pin state:
• Send command AT#GPIO=<pin>,<dummy_value>,0<cr>
where:
<pin> is the GPIO pin number at which the command applies:
1 – GPIO1 10 – GPIO10
2 – GPIO2 11 – GPIO11
3 – GPIO3 12 – GPIO12
4 – GPIO4 13 – GPIO13
5 – GPIO5 14 – GPIO14
6 – GPIO6 15 – GPIO15
7 – GPIO7 16 – GPIO16
8 – GPIO8 17 – GPIO17
9 – GPIO9 18 – GPIO18
<value> is a dummy value can be either:
0 – dummy value
1 – dummy value
• wait for response OK
NOTE: The #GPIO setting for all GPIO except from GPIO4, GPIO5, GPIO6 and GPIO7, is not
saved and will be lost on power off, so at start-up repeat pin initialization commands.
At start-up all the GPIOs except from GPIO5, GPIO6 & GPIO7 are configured by default as
INPUT, but the setting for GPIO4, GPIO5, GPIO6 and GPIO7 instead is maintained even after a
shutdown to permit the Alternate feature to work always.
For example:
1- Let's assume you want to set GPIO4 pin as Input:
command:
AT#GPIO=4,0,0<cr>
response:
OK