Internal Hardware Watchdog - MTX -3G-JAVA series User Manual

4.11 Internal Hardware Watchdog
Applicable models:
The MTX‐3G‐JAVA has a new internal hardware watchdog component which allows the module to be
reset when the internal Java program is not refreshed in 120±60 seconds, meaning that it has hang‐
ups or that it does not respond in this time.
The MTX‐3G‐JAVA has the watchdog disabled by default in the factory settings.
In order to use this watchdog, two GPIOs must be handled:

GPIO1 (which must be configured as output) sets/resets watchdog. A logic '1' disables the
watchdog functionality.

GPIO2 (which must be configured as output) must change cycle in less than 120 seconds
To enable this feature, ask gsmsupport@matrix.es about our I2C‐GPIO handling JAVA code or visit
the Downloads section at www.mtxm2m.com
You can configure both the "Automatic Restart" and the "Watchdog" features in your Java routine
source code using initialization code.
www.mtx‐terminals.com
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MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX‐3G‐JAVA Family
2015/10 v1.6
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