Rainbow Electronics GE863-GPS low power - Manual (Page 85)

GE863-GPS Software User Guide
1vv0300724 Rev. 3 - 05/07/07
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3.6.2.5 Using GPIO6 pin as ALARM OUTPUT (alternate function)
When you set the GPIO6 pin as alarm output function, the pin reports the alarm state following the
+CALA settings. To set the pin in alternate function you must specify also a dummy value for the pin
state:
•
Send command AT#GPIO=6,<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 GPIO6 pin always in OUTPUT direction
and since the GPIO6 pin value is controlled by the internal software, the corresponding
function (+CALA) must be setup properly.
NOTE: The #GPIO6 direction setting is saved and will be kept after a power off.
During RESET the GPIO6 pin is set to HIGH.
For example:
1- Let's assume you want to set GPIO6 pin as ALARM OUTPUT:
command:
AT#GPIO=6,0,2<cr>
response:
OK
In this case, the GPIO6 pin was successfully put in alarm output direction.