HE863 family AT commands reference guide
80377ST10083a Rev.6 – 2012-11-12
Reproduction forbidden without written authorization from Telit Communications S.p.A.- All Rights Reserved.
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#GPIO - General Purpose Input/Output Pin Control
AT#GPIO=<pin>,
<mode>[,<dir>]
AT#GPIO
=<pin>,<mode>[,<dir>]
Execution command sets the value of the general purpose output pin GPIO<pin>
according to <dir> and <mode> parameter.
Parameters:
<pin>
- GPIO pin number; supported range is from 1 to a value that depends on the
hardware.
<mode>
- its meaning depends on <dir> setting:
0 - no meaning if <dir>=0 - INPUT
- output pin cleared to 0 (Low) if <dir>=1 - OUTPUT
1 - no meaning if <dir>=0 - INPUT
- output pin set to 1 (High) if <dir>=1 - OUTPUT
2 - Reports the read value from the input pin if <dir>=0 - INPUT
- Reports the read value from the input pin if <dir>=1 - OUTPUT
<dir>
- GPIO pin direction
0 - pin direction is INPUT
1 - pin direction is OUTPUT
2 - pin direction is ALTERNATE FUNCTION (see Note)
Note: when
<mode>=2
(and
<dir>
is omitted) the command reports the direction
and value of pin
GPIO<pin>
in the format:
#GPIO: <dir>,<stat>
where:
<dir>
- current direction setting for the
GPIO<pin>
<stat>
logic value read from pin
GPIO<pin>
in the case the pin
<dir>
is set to
input;
logic value present in output of the pin
GPIO<pin>
in the case the pin
<dir>
is currently set to output;
no meaning value for the pin
GPIO<pin>
in the case the pin
<dir>
is set to
alternate function.
Note: "ALTERNATE FUNCTION" value is valid only for following pins:
GPIO6
- alternate function is “ALARM Output” (see +CALA)
GPIO10
- alterantive function is “DVI TX” (See #DVI)
GPIO17
- alternative function is “DVI SYNC” (See #DVI)
GPIO18
- alternative function is “DVI RX” (See #DVI)
AT#GPIO?
Read command reports the read direction and value of all
GPIO
pins, in the format:
#GPIO: <dir>,<stat>[<CR><LF>#GPIO: <dir>,<stat>[…]]
where:
<dir>
- as seen before
<stat>
- as seen before
AT#GPIO=?
Test command reports the supported range of values of the command parameters
