Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 627)

I/O Commands
Input/Output Management +WIOM
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WM_DEV_OAT_UGD_049 - 001 VOLUME 4 August 23, 2007
22.1.6 Notes
This Wavecom proprietary command is allowed on a GPIO even if it is allocated by
the Open AT ® embedded application or by a feature. When the application or the
feature associated to this GPIO is deactivated, the new configuration is applied
When a GPIO is used by a feature, it is not available anymore. When writable or
readable operations are attempted on these GPIO, +CME_ERROR: 3 will be returned.
<GpioVal> parameter is not displayed, if the GPIO direction is input or if the GPIO is
used by a feature.
If a GPIO is set as input (<GpioDir>=0), the parameter <GpioVal> is forbidden.
A GPIO can be used as input or output if it is not used by an external feature:
• the keyboard can be activated/deactivated using +WHCNF command,
• the UART1 & UART2 can be activated/deactivated using +WMFM command,
• the SIMPRES can be activated/deactivated using +WFM command
(SIMREMOVE feature),
• the interruption pins (INT0 and INT1) are activated/deactivated using +WFM
command (NO_INTERRUPT, INTERRUPT, OFFWHENUNPLUG features),
• the I2C, SPI1 & SPI2 buses are only available using an Open AT ® application.
For the GPIO list and details regarding multiplexed features, please refer to the
General Purpose Input/Output section of the Wireless CPU ® Product Technical
Specification.