supply voltage (Pin 24). The PWM output is set using the IO_ WRITE_PWM application protocol com-
mand, as discussed in Section 4.4.
2.7 Digital I/O
The WSN802G includes four general purpose input/output (GPIO) ports, GPIO0 (Pin 4), GPIO1 (Pin 11),
GPIO2 (Pin 10) and GPIO3 (Pin 12). When programmed as inputs, GPIO pins include an internal weak
pull-up. The states of pins configured as inputs are captured as part of the automatic I/O report when a
logic high signal is applied to the WAKE_IN pin or the AutoReport timer fires, as discussed in Section 2.2.
These readings can also be retrieved anytime the WSN802G is in active mode using the IO_READ_RE-
QUEST application protocol command as discussed in Section 4.1. The states of GPIO pins configured
as outputs are set using the IO_WRITE_GPIO application protocol command as discussed in Section 4.3.
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