> 20.1 | AT^SPIO General Purpose IO Driver Open/Close

> The AT^SPIO write command opens and closes the general purpose IO driver. The command must be executed before any other GPIO command can be used. After closing the driver, all pins used (i.e. opened) will be put into high impedance state (inputs) with no internal pull up or down.
> The command does not reserve any general purpose IO pin, only the drivers required for GPIO pin management will be loaded.
> Syntax

> Test Command AT^SPIO=?
> Response(s)
> ^SPIO:(list of supported <mode>s)
> OK

> Write Command AT^SPIO=<mode>
> Response(s)
> OK
> ERROR
> +CME ERROR: <err>

> Reference(s) |  | PIN |  | ASC0 | ASC1 | USB | MUX1 | MUX2 | MUX3 |  |  | Charge | Q | Last
> SIEMENS |  | - |  | + | + | + | + | + | + |  |  | - | + | -

> Parameter Description

> <mode>(num)

> 0
> Close General purpose IO driver
> 1
> Open General purpose IO driver