LoRa Agriculture Sensor User Guide
T0005978_UG
Version # 1.9
TEKTELIC Communications Inc.
Confidential
Page 15 of 22
3
Power Up, Commissioning and Monitoring
3.1
Reed Switch Awakening Procedure
Note: Early versions of the Agriculture Sensor were shipped with tape over the positive terminal of
the battery, so if the wakeup pattern described below doesn’t work, the battery should be checked
and tape removed if necessary.
The Agriculture Sensor is equipped with a magnetic reed switch. The reed switch can be
operated by the provided magnet, and is used for the following purposes:
1)
MCU reset upon observing a specified magnetic pattern:
This is mainly used to wake up the module from DEEP SLEEP and having it try to join the
network. When the module comes out of the factory, it is in the DEEP SLEEP mode,
5
and
can be activated using the specified magnetic pattern. Also, the same magnetic pattern
can just be used to reset the Agriculture Sensor during normal operation, getting it to
try to rejoin the network.
The magnetic pattern in this application is hard coded (not user configurable) as
illustrated in Figure 5. A magnet presence is achieved by attaching the magnet to the
enclosure at the magnet sign. A magnet absence is achieved by taking the magnet away
from the enclosure. The magnet sign is illustrated in Figure 5 below:
5
The Agriculture Sensor will go to DEEP SLEEP whenever the internal sleep button on the PCBA (labeled SW1) is
pressed. This is performed as the last step in the factory before closing the enclosure. The only ways to activate the
module out of DEEP SLEEP is to apply the specified magnetic pattern or to open the enclosure and remove and
reinsert the battery.
