At#gpio=5,<dummy_value>,2<cr – Rainbow Electronics GE863-GPS low power User Manual
Page 84
GE863-GPS Software User Guide
1vv0300724 Rev. 3 - 05/07/07
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page 84 of 122
3.6.2.4 Using GPIO5 pin as RFTXMON OUTPUT (alternate function)
When you set the GPIO5 pin as RFTXMON output function, the pin reports the Transmitter active
status. To set the pin in alternate function you must specify also a dummy value for the pin state:
•
Send command
AT#GPIO=5,<dummy_value>,2<cr>
where:
<value> is a dummy value can be either:
0 – dummy value
1 – dummy value
•
wait for response
OK
TIP: Remember that the alternate function places the GPIO5 pin always in OUTPUT direction.
NOTE: The #GPIO5 direction setting is saved and will be kept after a power off.
The saving can be applied only for the alternate mode.
For example:
1- Let's assume you want to set GPIO5 pin as RFTXMON OUTPUT:
command:
AT#GPIO=5,0,2<cr>
response:
OK
In this case, the GPIO5 pin was successfully put in RFTXMON output direction.