Chapter 13 – Specific AT Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)
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Read GPIO Value +WIOR
Description:
Read the requested GPI or GPIO pin value.
Notes:
•
By default (e.g., after a reset), the I/O ports configuration is set by the
+WIOM
command.
•
This command is allowed only on a GPIO not allocated by an Open-AT embedded application or
for bus operations.
•
When the BT chip is switched on, the GPIO5 is not available anymore.
Values:
<index>
Up to ten I/O ports are available. The <index> value is between 0 and 9.
<value>
0
I/O port number <index> is reset.
1
I/O port number <index> is set.
Syntax: Command
syntax:
AT+WIOR=<index>
Response
syntax:
+WIOR: <value>
Command
Possible responses
AT+WIOR=0
Read I/O (number 0) value
+WIOR: 0
OK
GPIO number 0 is reset
Write GPIO Value +WIOW
Description:
Set the requested GPO or GPIO pin value.
Notes:
•
By default (e.g., after a reset), the I/O ports configuration is set by the
+WIOM
command.
•
This command is allowed only on a GPIO not allocated by an Open-AT embedded application or
for bus operations.
•
When the BT chip is switched on, the GPIO5 is not available anymore. It is not possible to
change the state of the GPIO using this command.
Values: <index>
Up to ten I/O ports are available. The <index> value is between 0 and 9.
<value>
0
I/O port number <index> is reset.
1
I/O port number <index> is set.
Syntax:
Command syntax: AT+WIOW=<index >,<value>
Command
Possible responses
AT+WIOW=2,0
Reset I/O (number 2)
OK
GPIO value is written
