Sam El-Husseini e3975e65e5 pxt-microbit Accessibility PR (#529 )

* Accessibility changes

2017-09-07 13:42:08 -07:00

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Bluetooth LED Service

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For another device like a smartphone to use any of the Bluetooth "services" which the @boardname@ has, it must first be paired with the @boardname@. Once paired, the other device may connect to the @boardname@ and exchange data relating to many of the @boardname@'s features.

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The Bluetooth LED service allows another device such as a smartphone to send short text strings or patterns over a Bluetooth connection to a @boardname@ for display on its LED matrix. Text will scroll across the @boardname@ and the speed at which it scrolls can also be controlled using the Bluetooth LED service. Devices using the LED service may also read the current state of the @boardname@'s LED matrix.

So you could, for example, draw a smiley face in a smartphone app and at the press of a button, have it magically appear on your @boardname@ on the other side of the room. Or you could program your smartphone to send a message to your @boardname@ whenever your phone receives an email, SMS or social media message so you could wear your @boardname@ like a smart watch and leave your phone in your bag.

No additional code is needed on the @boardname@ to use the Bluetooth LED service from another device.

bluetooth.startLEDService();

Example: Starting the Bluetooth LED service

The following code shows the Bluetooth LED service being started:

bluetooth.startLEDService();

Video - LED service demo starts at 2:00

http://www.youtube.com/watch?v=aep_GVowKfs

Advanced

For more advanced information on the @boardname@ Bluetooth LED service including information on using a smartphone, see the Lancaster University @boardname@ runtime technical documentation

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