User's Manual

2016-03-18

NUR-10W HW Implementation Guide v1.4

7 GPIO CONFIGURATIONS

NUR-10W has 5 programmable GPIOs. All of them can be used as an input or output. They can be also

configured to have different predefined functions.

7.1 INPUT / OUTPUT

All GPIOs can be configured via SW API to be inputs or outputs. IO voltage level is 3.3V and maximum

source current is 3mA and sink current 6mA. When configured as input SW API can check what the state

(high / low) of the GPIO pin is. When GPIO is configured as an output the SW API can drive the GPIO pin to

high or low.

7.2 PREDEFINED FUNCTIONS

Table 17. NUR-10W module GPIOs options.

RFON (GPIO type: OUTPUT)

When GPIO is configured as “RFON” it drives high state always when power amplifier is turned on. This

function can be used for example driving LED indicator.

RFIDREAD (GPIO type: OUTPUT)

When “RFIDREAD” function is selected will GPIO pin drive high for a short period of time after a timeout has

surpassed after last successful tag reading. The timeout can be defined as a parameter for the function. If

no tags were successfully read and the timeout was surpassed the pin will drive high three times. This

I/O

Function

Action

Trigger

Output

RFON

Output

RFIDREAD

Output

Beeper

Output

Antenna control 1

Output

Antenna control 2

Input

Notify

rising/falling/both

Input

Scantag

rising/falling/both

Input

Inventory

rising/falling/both