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Development Kit User Guide
3.2.
Control Functions
3.2.1. Power ON/OFF
Once the HL Series Development Kit is connected to an external source, the HL module will start
monitoring the ON/OFF pin for a power on event. A power on event can be triggered by either:
Pressing pushbutton SW601 once for approximately 2 seconds, or by
Shorting CN601.1 and CN601.2.
Note that shorting pins 1 and 2 of CN601 bypasses the POK_IN signal which means that the
development kit will be powered on as soon as it is connected to an external source (without needing
to press pushbutton SW601).
The module can be powered off by disconnecting the development kit from the power source or by
issuing the appropriate AT command. For more information about AT commands, refer to document
[1] AirPrime HL6 and HL8 Series AT Commands Interface Guide.
Figure 11.
PWR ON Pushbutton and CN601 Jumper
Note:
Do not put a jumper between pins 2 and 3 of CN601. Doing this will cause the module to always
reset. Refer to the following section for information about properly resetting the module.
3.2.2. ~RESET
The ~RESET pushbutton starts a general reset when it is pushed. Reset can only be executed after
the module has been switched ON.
Note:
An operating system reset is preferred to a hardware reset.
Figure 12.
~RESET Pushbutton
4114877
Rev 5.0
Interfaces
October 12, 2015
24
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