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Table of Contents

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GumbandConnection

A Gumband communication instance (only one can exist per device). Functions for this class are listed below:

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GumbandConnection MyGumband;

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begin()

Initiates the Gumband connection.

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MyGumband.begin();

MyGumband.begin(1);

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id()

Sets the Hardware ID of the Gumband Hardware. This is a unique identifier generated by the Gumband UI. Each separate registered Gumband Hardware device receives its own ID. This ID is required to link Hardware to a specific Exhibit in the Gumband UI.

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void id(const char* id);

Example Usage:

MyGumband.id(16);

MyGumband.id(“16”);

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username()

Set the Gumband master control server username. This must match the username created for this device within the Gumband UI.

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MyGumband.username(“MarlonBando”);

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password()

Set the Gumband master control server password. This must match the password created for this device within the Gumband UI.

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MyGumband.password(“P455W0RD!”);

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connected()

Returns ‘1’ if the Hardware has a valid network connection.

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if(MyGumband.connected() == 1) { //Connected to Network }

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connectedMaster()

Returns ‘1’ if the Hardware has a valid master server connection.

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if(MyGumband.connectedMaster() == 1) { //Connected to Master }

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connectedExhibit()

Returns ‘1’ if the Hardware has a valid Exhibit server connection.

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if(MyGumband.connectedExhibit() == 1) { //Connected to Exhibit }

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event()

Publish a text message to the ‘event’ log.

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MyGumband.event(“An event has occurred!”);

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error()

Publish a text message to the ‘error’ log.

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MyGumband.error(“An error has occurred!”);

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debug()

Publish a text message to the ‘debug’ log.

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MyGumband.debug(“Something routine has occurred!”);

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print()

Print data to the Hardware USB serial port.

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MyGumband.print(“Hello World!”);

MyGumband.print(25);

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GumbandProperty

An instance of a Gumband property or endpoint. An individual instance must exist for every Gumband property in the Exhibit.

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GumbandProperty MyProperty;

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begin()

This function creates a named property within a named peripheral container and registers it with the Gumband server so we can publish or subscribe to it. A Gumband instance must first exist before this function will succeed.

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MyProperty.begin(“PeripheralName”, “PropertyName”, gmbnd_button);

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publish()

Publish data to the property endpoint.

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MyProperty.publish(values, 5); //values[5] = {3,5,8,1,0} Anchor_do2dqbzaj8g3_do2dqbzaj8g3AT Commands

Bundles support an AT command set over a serial interface.

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Empty test command, Bundle will respond with “OK” if successfully receiving AT commands.

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Change or initialise Gumband settings.

Syntax:

AT+GBSET=<HardwareId>,<Firmware>

Example Usage:

AT+GBSET=7,10

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Set the Gumband Master server authorization credentials.

Syntax:

AT+GBAUTH=<Username>,<Password>

Example Usage:

AT+GBAUTH=”MarlonBando”,”P455W0RD!”

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Create a Publish or Subscribe Property

Syntax:

AT+GBCREATE=<Pub/Sub>,<Peripheral>,<Property>,<Type>

Example Usage:

AT+GBCREATE=Pub,”Front Panel”,Button,gmbnd_button

AT+GBCREATE=Sub,”Front Panel”,LED,gmbnd_led

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Publish to a Property

Syntax:

AT+GBPUB=<Peripheral>,<Property>,<Data>

Example Usage:

AT+GBDEBUG=”Motor Enabled”

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Publish an Error message.

Syntax:

AT+GBERROR=<Text>

Example Usage:

AT+GBERROR=”Motor Stall Detected!”

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Publish a Debug message.

Syntax:

AT+GBDEBUG=<Text>

Example Usage:

AT+GBDEBUG=”Motor Enabled”

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Publish an Event message.

Syntax:

AT+GBEVENT=<Text>

Example Usage:

AT+GBEVENT=”A user pushed the start button”

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Data from a subscribed property, this command is sent from the device and cannot be written to.

Syntax:

+GBSUB=<Peripheral>,<Property>,<Data>

Example Usage:

AT+GBSUB=”Front Panel”,LED,0x00F0

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Property Type

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Size

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Description

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gmbnd_button

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1 byte

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Momentary Button -
0 = Release

1 = Press
2 = Toggle/Moment

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gmbnd_switch

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1 bool (byte)

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Toggle Switch -
0 = Off
1 = On

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gmbnd_encoder

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4 bytes

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32-bit number

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gmbnd_relay

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1 bool (byte)

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Relay -
0 = Off
1 = On

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gmbnd_pwm

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4 bytes

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PWM Duty Cycle

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gmbnd_led

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2 bytes

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Brightness

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gmbnd_motor_position

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4 bytes

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gmbnd_motor_speed

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4 bytes

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gmbnd_motor_accel

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4 bytes

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gmbnd_step_motor

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4 bytes

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gmbnd_addr_led

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7 bytes

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IARGBW

I = Index (16bit)
A = alpha/brightness

RGBW = Color Bytes

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gmbnd_byte

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1 byte

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Generic 8 bit number

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gmbnd_int32

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4 bytes

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Generic 32 bit number

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