At#gpio=4,,2 Page 83
Page 83
GE863-GPS Software User Guide
1vv0300724 Rev. 3 - 05/07/07
Reproduction forbidden w ithout Telit Communications S.p.A. w ritten authorization - All Rights Reserved
page 83 of 122
For example:
1- Let's assume you want to set the GPIO3 pin HIGH:
command:
AT#GPIO=3,1,1
response:
OK
In this case, the GPIO3 pin was set in output direction and its status has been set to HIGH.
3.6.2.3 Using GPIO4 pin as RF Transmission Control (alternate function)
When you set the GPIO4 pin as RF Transmission Control input function, the pin forces the Transmitter
to be OFF when the application set to LOW the line. To set the pin in alternate function you must
specify also a dummy value for the pin state:
•
Send command
AT#GPIO=4,
where:
0 – dummy value
1 – dummy value
•
wait for response
OK
TIP: Remember that the alternate function places the GPIO4 pin always in INPUT direction.
NOTE: The #GPIO4 direction setting is saved and will be kept after a power off.
The saving can be applied only for the alternate mode.