+
+
+
The Date
+
Bluetooth Developer Studio Level 2 Profile Report
+
+
+
+
+
+
+
+
+
+
+
+
+
Default 'out of the box' profile for the BBC Micro Bit
+
+
+
+
+
Version 1.6 - 21st September 2015
+Removed the Battery Service. No way to establish battery levels on the micro:bit
+Added a simple Temperature Service to exploit temperature sensors in micro:bit processors
+Accelerometer and Magnetometer period characteristics now have uint16 fields instead of uint8 which required scaling up by multipling by 10.
+Accelerometer Data and Magnetometer Data characteristics now use signed 16 bit integer fields for each of their X, Y and Z parts.
+Accelerometer Data and Magnetometer Data characteristics now use signed 16 bit integer fields for each of their X, Y and Z parts.
+New characteristic Magnetometer Heading added to the Magnetometer Service. Provides current heading in degrees.
+Removed IO Parallel Port characteristic due to complexity and memory considerations.
+Added Generic Attribute Service (previously absent in the repository)
+
+Version 1.5 - 10th September 2015
+Button State 2 characteristic given new, distinct UUID of E95DDA91-251D-470A-A062-FA1922DFA9A8
+Removed the System LED State characteristic from the LED Service since it cannot be controlled from the BLE MCU.
+Removed the Scrolling State characteristic from the LED Service due to complexity and memory constraints.
+Changed LED Matrix State use of “Write Without Response” to “Write” so that no further writes can be made until there’s been an ACK back from the previous one.
+Removed Write property from MicroBit Requirements characteristic.
+
+
+
+
Base UUID
+
E95D0000251D470AA062FA1922DFA9A8
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D2257251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
The generic_access service contains generic information about the device. All available Characteristics are readonly.
+
+
+
+
+
+
+
+
+
+
Generic Access - CHARACTERISTICS
+
+
+
+
+
+
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DB788251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
The external appearance of this device. The values are composed of a category (10-bits) and sub-categories (6-bits).
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Generic Attribute - CHARACTERISTICS
+
+
+
+
+
+
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D5C58251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
The Device Information Service exposes manufacturer and/or vendor information about a device.
+
+
+
+
+
+
This service exposes manufacturer information about a device.
+The Device Information Service is instantiated as a Primary Service.
+Only one instance of the Device Information Service is exposed on a device.
+
+
+
+
+
+
+
+
Device Information - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D1BFB251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the name of the manufacturer of the device.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D4257251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the model number assigned by the device vendor.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D06E2251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
The value of this characteristic is a variable-length UTF-8 string representing the serial number for a particular instance of the device.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DADDF251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the hardware revision for the hardware within the device.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DB9A2251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the firmware revision for the firmware within the device.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D0753251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Exposes accelerometer data. An accelerometer is an electromechanical device that will measure acceleration forces.
+These forces may be static, like the constant force of gravity pulling at your feet, or they could be dynamic - caused by moving or vibrating the accelerometer.
+
+Value contains fields which represent 3 seperate accelerometer measurements for X, Y and Z axes as 3 unsigned 16 bit values in that order and in
+little endian format.
+
+Data can be read on demand or notified periodically.
+
+
+
+
+
+
+
ACCELEROMETER SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D41FB251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains accelerometer measurements for X, Y and Z axes as 3 signed 16 bit values in that order and in little endian format.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D08DD251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Determines the frequency with which accelerometer data is reported in milliseconds.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DF2D8251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Exposes magnetometer data. A magnetometer measures a magnetic field such as the earth's magnetic field in 3 axes.
+
+
+
+
+
+
+
MAGNETOMETER SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95DD9D1251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains magnetometer measurements for X, Y and Z axes as 3 signed 16 bit values in that order and in little endian format.
+Data can be read on demand or notified periodically.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D0A68251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Determines the frequency with which magnetometer data is reported in milliseconds.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DB42F251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Compass bearing in degrees from North.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D9882251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Exposes the two Micro Bit buttons and allows 'commands' associated with button state changes to be associated with button states and notified to a connected client.
+
+
+
+
+
+
+
Button Service - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95DDA90251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
State of Button A may be read on demand by a connected client or the client may subscribe to notifications of state change.
+3 button states are defined and represented by a simple numeric enumeration: 0 = not pressed, 1 = pressed, 2 = long press.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DFB03251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
State of Button B may be read on demand by a connected client or the client may subscribe to notifications of state change.
+3 button states are defined and represented by a simple numeric enumeration: 0 = not pressed, 1 = pressed, 2 = long press.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DD91D251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Provides access to and control of LED state. Allows the state (ON or OFF) of all 25 LEDs to be set in a single write operation.
+Allows short text strings to be sent by a client for display on the LED matrix and scrolled across at a speed controlled by the Scrolling Delay characteristic.
+
+
+
+
+
+
+
LED SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D0D97251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Allows the state of any|all LEDs in the 5x5 grid to be set to on or off with a single GATT operation.
+Consists of a 32 bit field with bits 0 - 24 representing the off (0) or on (1) state of the corresponding LED.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DF078251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A short UTF-8 string to be shown on the LED display.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D15D1251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Specifies a millisecond delay to wait for in between showing each character on the display.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95127B251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Provides read/write access to I/O pins, individually or collectively. Allows configuration of each pin for input/output and analogue/digital use.
+
+
+
+
+
+
+
IO PIN SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95DD6A3251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains data relating to zero or more pins. Structured as a variable length array of up to 19 Pin Number / Value pairs.
+
+Pin Number and Value are each uint8 fields.
+
+Note however that the micro:bit has a 10 bit ADC and so values are compressed to 8 bits with a loss of resolution.
+
+OPERATIONS:
+
+WRITE: Clients may write values to one or more pins in a single GATT write operation.
+A pin to which a value is to be written must have been configured for output using the Pin IO Configuration characteristic.
+Any attempt to write to a pin which is configured for input will be ignored.
+
+NOTIFY: Notifications will deliver Pin Number / Value pairs for those pins defined as input pins by the Pin IO Configuration characteristic
+and whose value when read differs from the last read of the pin.
+
+READ: A client reading this characteristic will receive Pin Number / Value pairs for all those pins defined as input pins by the Pin IO Configuration characteristic.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D4388251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A bit mask which allows each pin to be configured for analogue or digital use.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DC5A2251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A bit mask which allows each pin to be configured for input or output use.
+Bit n corresponds to pin n where 0 LESS THAN OR EQUAL TO n LESS THAN 19. A value of 0 means configured for output and 1 means configured for input.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D4C7C251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
A generic, bi-directional event communication service.
+
+The Event Service allows events or commands to be notified to the micro:bit by a connected client and it allows micro:bit to notify the connected client
+of events or commands originating from with the micro:bit. The micro:bit can inform the client of the types of event it is interested in being informed
+about (e.g. an incoming call) and the client can inform the micro:bit of types of event it wants to be notified about.
+
+The term “event” will be used here for both event and command types of data.
+
+Events may have an associated value.
+
+Note that specific event ID values including any special values such as those which may represent wild cards are not defined here.
+The micro:bit run time documentation should be consulted for this information.
+
+Multiple events of different types may be notified to the client or micro:bit at the same time.
+Event data is encoded as an array of structs each encoding an event of a given type together with an associated value.
+Event Type and Event Value are both defined as uint16 and therefore the length of this array will always be a multiple of 4.
+
+struct event {
+ uint16 event_type;
+ uint16 event_value;
+};
+
+
+
+
+
+
+
EVENT SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D8912251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A variable length list of event data structures which indicates the types of client event, potentially with a specific value which the micro:bit wishes
+to be informed of when they occur. The client should read this characteristic when it first connects to the micro:bit. It may also subscribe to notifications
+to that it can be informed if the value of this characteristic is changed by the micro:bit firmware.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DAEF6251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains one or more event structures which should be notified to the client. It supports notifications and as such the client should subscribe to
+notifications from this characteristic.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DDDA1251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
a variable length list of event data structures which indicates the types of micro:bit event, potentially with a specific value which the client wishes
+to be informed of when they occur. The client should write to this characteristic when it first connects to the micro:bit.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D531C251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
a writable characteristic which the client may write one or more event structures to, to inform the micro:bit of events which have occurred on the client.
+These should be of types indicated in the micro:bit Requirements characteristic bit mask.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D93B0251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Allows clients to initiate the micro:bit pairing and over the air firmware update procedures.
+
+
+
+
+
+
+
DFU CONTROL SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D6A96251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Writing 0x01 initiates rebooting the micro:bit into the Nordic Semiconductor bootloader if the DFU Flash Code characteristic has been written
+to with the correct secret key.
+
+Writing 0x02 to this characteristic means "request flash code".
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D2E9D251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Allows a client to indicate that it "knows" the flash code produced when pairing.
+
+Notifications are used to deliver the flash code to a client during the initial pairing process.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D6100251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Ambient temperature derived from several internal temperature sensors on the micro:bit
+
+
+
+
+
+
+
TEMPERATURE SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D9250251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Signed integer 8 bit value in degrees celsius.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
The Date
+
Bluetooth Developer Studio Level 3 Profile Report
+
+
+
+
+
+
+
+
+
Profile Name
+
BBC microbit
+
+
+
+
+
Default 'out of the box' profile for the BBC Micro Bit
+
+
+
+
+
Version 1.6 - 21st September 2015
+Removed the Battery Service. No way to establish battery levels on the micro:bit
+Added a simple Temperature Service to exploit temperature sensors in micro:bit processors
+Accelerometer and Magnetometer period characteristics now have uint16 fields instead of uint8 which required scaling up by multipling by 10.
+Accelerometer Data and Magnetometer Data characteristics now use signed 16 bit integer fields for each of their X, Y and Z parts.
+Accelerometer Data and Magnetometer Data characteristics now use signed 16 bit integer fields for each of their X, Y and Z parts.
+New characteristic Magnetometer Heading added to the Magnetometer Service. Provides current heading in degrees.
+Removed IO Parallel Port characteristic due to complexity and memory considerations.
+Added Generic Attribute Service (previously absent in the repository)
+
+Version 1.5 - 10th September 2015
+Button State 2 characteristic given new, distinct UUID of E95DDA91-251D-470A-A062-FA1922DFA9A8
+Removed the System LED State characteristic from the LED Service since it cannot be controlled from the BLE MCU.
+Removed the Scrolling State characteristic from the LED Service due to complexity and memory constraints.
+Changed LED Matrix State use of “Write Without Response” to “Write” so that no further writes can be made until there’s been an ACK back from the previous one.
+Removed Write property from MicroBit Requirements characteristic.
+
+
+
+
Base UUID
+
E95D0000251D470AA062FA1922DFA9A8
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D2257251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
The generic_access service contains generic information about the device. All available Characteristics are readonly.
+
+
+
+
+
+
+
+
+
+
Generic Access - CHARACTERISTICS
+
+
+
+
+
+
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DB788251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
The external appearance of this device. The values are composed of a category (10-bits) and sub-categories (6-bits).
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Generic Attribute - CHARACTERISTICS
+
+
+
+
+
+
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Start of Affected Attribute Handle Range : uint16 |
+ | 2. End of Affected Attribute Handle Range : uint16 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D5C58251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
The Device Information Service exposes manufacturer and/or vendor information about a device.
+
+
+
+
+
+
This service exposes manufacturer information about a device.
+The Device Information Service is instantiated as a Primary Service.
+Only one instance of the Device Information Service is exposed on a device.
+
+
+
+
+
+
+
+
Device Information - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D1BFB251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the name of the manufacturer of the device.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Manufacturer Name : utf8s |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D4257251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the model number assigned by the device vendor.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Model Number : utf8s |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D06E2251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
The value of this characteristic is a variable-length UTF-8 string representing the serial number for a particular instance of the device.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Serial Number : utf8s |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DADDF251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the hardware revision for the hardware within the device.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Hardware Revision : utf8s |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DB9A2251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Optional
+
+
+
+
+
+
+
+
The value of this characteristic is a UTF-8 string representing the firmware revision for the firmware within the device.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Firmware Revision : utf8s |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D0753251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Exposes accelerometer data. An accelerometer is an electromechanical device that will measure acceleration forces.
+These forces may be static, like the constant force of gravity pulling at your feet, or they could be dynamic - caused by moving or vibrating the accelerometer.
+
+Value contains fields which represent 3 seperate accelerometer measurements for X, Y and Z axes as 3 unsigned 16 bit values in that order and in
+little endian format.
+
+Data can be read on demand or notified periodically.
+
+
+
+
+
+
+
ACCELEROMETER SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D41FB251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains accelerometer measurements for X, Y and Z axes as 3 signed 16 bit values in that order and in little endian format.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Accelerometer_X : sint16 |
+ | 2. Accelerometer_Y : sint16 |
+ | 3. Accelerometer_Z : sint16 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D08DD251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Determines the frequency with which accelerometer data is reported in milliseconds.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Accelerometer_Period : uint16 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DF2D8251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Exposes magnetometer data. A magnetometer measures a magnetic field such as the earth's magnetic field in 3 axes.
+
+
+
+
+
+
+
MAGNETOMETER SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95DD9D1251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains magnetometer measurements for X, Y and Z axes as 3 signed 16 bit values in that order and in little endian format.
+Data can be read on demand or notified periodically.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Magnetometer_X : sint16 |
+ | 2. Magnetometer_Y : sint16 |
+ | 3. Magnetometer_Z : sint16 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D0A68251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Determines the frequency with which magnetometer data is reported in milliseconds.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Magnetometer_Period : uint16 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DB42F251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Compass bearing in degrees from North.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. bearing value : uint16 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D9882251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Exposes the two Micro Bit buttons and allows 'commands' associated with button state changes to be associated with button states and notified to a connected client.
+
+
+
+
+
+
+
Button Service - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95DDA90251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
State of Button A may be read on demand by a connected client or the client may subscribe to notifications of state change.
+3 button states are defined and represented by a simple numeric enumeration: 0 = not pressed, 1 = pressed, 2 = long press.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Button_State_Value : uint8 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DFB03251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
State of Button B may be read on demand by a connected client or the client may subscribe to notifications of state change.
+3 button states are defined and represented by a simple numeric enumeration: 0 = not pressed, 1 = pressed, 2 = long press.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Button_State_Value : uint8 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DD91D251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Provides access to and control of LED state. Allows the state (ON or OFF) of all 25 LEDs to be set in a single write operation.
+Allows short text strings to be sent by a client for display on the LED matrix and scrolled across at a speed controlled by the Scrolling Delay characteristic.
+
+
+
+
+
+
+
LED SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D0D97251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Allows the state of any|all LEDs in the 5x5 grid to be set to on or off with a single GATT operation.
+Consists of a 32 bit field with bits 0 - 24 representing the off (0) or on (1) state of the corresponding LED.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. LED_Matrix_State : uint32 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DF078251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A short UTF-8 string to be shown on the LED display.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. LED_Text_Value : utf8s |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D15D1251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Specifies a millisecond delay to wait for in between showing each character on the display.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Scrolling_Delay_Value : uint16 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95127B251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Provides read/write access to I/O pins, individually or collectively. Allows configuration of each pin for input/output and analogue/digital use.
+
+
+
+
+
+
+
IO PIN SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95DD6A3251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains data relating to zero or more pins. Structured as a variable length array of up to 19 Pin Number / Value pairs.
+
+Pin Number and Value are each uint8 fields.
+
+Note however that the micro:bit has a 10 bit ADC and so values are compressed to 8 bits with a loss of resolution.
+
+OPERATIONS:
+
+WRITE: Clients may write values to one or more pins in a single GATT write operation.
+A pin to which a value is to be written must have been configured for output using the Pin IO Configuration characteristic.
+Any attempt to write to a pin which is configured for input will be ignored.
+
+NOTIFY: Notifications will deliver Pin Number / Value pairs for those pins defined as input pins by the Pin IO Configuration characteristic
+and whose value when read differs from the last read of the pin.
+
+READ: A client reading this characteristic will receive Pin Number / Value pairs for all those pins defined as input pins by the Pin IO Configuration characteristic.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. IO_Pin_Data : uint8[] |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D4388251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A bit mask which allows each pin to be configured for analogue or digital use.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Pin_AD_Config_Value : uint24 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DC5A2251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A bit mask which allows each pin to be configured for input or output use.
+Bit n corresponds to pin n where 0 LESS THAN OR EQUAL TO n LESS THAN 19. A value of 0 means configured for output and 1 means configured for input.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Pin_IO_Config_Value : uint24 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D4C7C251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
A generic, bi-directional event communication service.
+
+The Event Service allows events or commands to be notified to the micro:bit by a connected client and it allows micro:bit to notify the connected client
+of events or commands originating from with the micro:bit. The micro:bit can inform the client of the types of event it is interested in being informed
+about (e.g. an incoming call) and the client can inform the micro:bit of types of event it wants to be notified about.
+
+The term “event” will be used here for both event and command types of data.
+
+Events may have an associated value.
+
+Note that specific event ID values including any special values such as those which may represent wild cards are not defined here.
+The micro:bit run time documentation should be consulted for this information.
+
+Multiple events of different types may be notified to the client or micro:bit at the same time.
+Event data is encoded as an array of structs each encoding an event of a given type together with an associated value.
+Event Type and Event Value are both defined as uint16 and therefore the length of this array will always be a multiple of 4.
+
+struct event {
+ uint16 event_type;
+ uint16 event_value;
+};
+
+
+
+
+
+
+
EVENT SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D8912251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
A variable length list of event data structures which indicates the types of client event, potentially with a specific value which the micro:bit wishes
+to be informed of when they occur. The client should read this characteristic when it first connects to the micro:bit. It may also subscribe to notifications
+to that it can be informed if the value of this characteristic is changed by the micro:bit firmware.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. microbit_reqs_value : uint8[] |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DAEF6251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Contains one or more event structures which should be notified to the client. It supports notifications and as such the client should subscribe to
+notifications from this characteristic.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Event_Type_And_Value : uint8[] |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
UUID
+
E95DDDA1251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
a variable length list of event data structures which indicates the types of micro:bit event, potentially with a specific value which the client wishes
+to be informed of when they occur. The client should write to this characteristic when it first connects to the micro:bit.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Client_Requirements_Value : uint8[] |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D531C251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
a writable characteristic which the client may write one or more event structures to, to inform the micro:bit of events which have occurred on the client.
+These should be of types indicated in the micro:bit Requirements characteristic bit mask.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. Event_Types_And_Values : uint8[] |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D93B0251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Allows clients to initiate the micro:bit pairing and over the air firmware update procedures.
+
+
+
+
+
+
+
DFU CONTROL SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D6A96251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Writing 0x01 initiates rebooting the micro:bit into the Nordic Semiconductor bootloader if the DFU Flash Code characteristic has been written
+to with the correct secret key.
+
+Writing 0x02 to this characteristic means "request flash code".
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. dfu_control : uint8 |
+
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D2E9D251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Allows a client to indicate that it "knows" the flash code produced when pairing.
+
+Notifications are used to deliver the flash code to a client during the initial pairing process.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. dfu_flash_code : uint32 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
+
+
+
+
+
+
UUID
+
E95D6100251D470AA062FA1922DFA9A8
+
+
+
+
Declaration
+
Primary
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
+
+
+
+
Ambient temperature derived from several internal temperature sensors on the micro:bit
+
+
+
+
+
+
+
TEMPERATURE SERVICE - CHARACTERISTICS
+
+
+
+
+
+
+
+
UUID
+
E95D9250251D470AA062FA1922DFA9A8
+
+
+
+
+
+
Requirement
+
Mandatory
+
+
+
+
+
+
+
+
Signed integer 8 bit value in degrees celsius.
+
+
+
+
+
+
+
+
+
+
+
Write Without Response
+
Excluded
+
+
+
+
Signed Write
+
Excluded
+
+
+
+
Reliable Write
+
Excluded
+
+
+
+
+
+
+
+
+
+
Writable Auxiliaries
+
Excluded
+
+
+
+
Extended Properties
+
Excluded
+
+
+
+
+
Fields
+
+
+ | 1. temperature value : sint8 |
+
+
+
+
+
+
+
Descriptors
+
+
+ | 1. Client Characteristic Configuration : 2902 |
+
+
+
+
+
+
+
