Interruptions - Libelium waspmote plug & sense Technical Manual

(For more information about clock calibrating methods in real time, consult web page:
http://www.maxim-ic.com/appnotes.cfm/an_pk/3566)
The recalibration process of the oscillation crystal is carried out thanks to the data received by the RTC's internal temperature
sensor .
Note: the RTC's internal temperature sensor is only meant for the time derive compensation, but not for common air temperature
sensing (we advise our Sensor Boards for that).
The RTC is responsible for waking the node up from energy saving mode called Deep Sleep. In addition, it controls when it has
to wake up the node and perform a particular action.
All information about their programming and operation can be found in the RTC programming Guide available at the
Development section of Libelium website.

21.3. Interruptions

At the request of the microcontroller, it receives all types of interruption as hardware interruptions.
There are only five sensors that can cause an interruption:
• Pluviometer
• Presence (PIR)
• Hall effect
• Liquid presence
• Liquid level
The sensors are mainly connected to Waspmote through the microprocessor's analog and digital inputs. Libelium has developed
several sensor integration boards which facilitate their connection with the processing unit. Each one of these sensor boards
has several pins used to manage the generation and capture of interruptions.
When an interruption is generated by a sensor, the main loop of the program stops, and the corresponding subroutine for the
sensor is executed. After that, main loop continues with normal operation.
If more information about Waspmote interruptions is required, please refer to the interruptions programming guide available
at the Development section of Libelium website.
-97-
Programming
v5.8