Product Manual

only if the the sleep mode is terminated by the S or T parameter being reached, a GPIO wakeup
(if configured), or activity on the serial RX line.
(2) - If either of these modes are selected, the pin will be set to the selected state after the client
has issued the $SL command. The pin will change to the awake state if the sleep mode is
terminated (as described in (1), or when then Tile wakes to perform internal house- keeping
functions. In the latter case, the pin will return to the sleep mode indication once the Tile has
completed its house-keeping functions and returns to sleep.
(3) - If either of these modes are selected, the pin will indicate if the Tile has received one or
more unread messages and is holding them for the client. If multiple messages are pending for
the client, the pin will maintain the state until all messages have been read. This is only
supported when the MD=P option is specified.
(4) - These two variations allow the user application to use GPIO1 as a general purpose output.
Example:
Setting the GPIO1 pin to wake on a high-to-low transition:
$OP GP=2*27
$OP OK*3b
The LG option sets the operating mode for the green LED. The available modes are:
Mode
Description
0
LED is off
1
LED is on
2
LED blinks 1 sec on/1 sec off until GPS fix acquired
3
LED follows GPS 1PPS output
4
LED is on when VHF radio is transmitting
5
LED is on when VHF radio is has received packet
6
LED is on when Tile is awake (1)
7
LED is heartbeat indicator (50ms on/4950ms off)
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