• PnP ID
1.11
Custom Serial Chat Profile Application
The Custom Serial Chat application is used for sending and receiving data between the boards (see
) and
the Microchip SmartConnect mobile application. This is a custom profile example application implemented over
GATT. The user can send the information to the mobile phone using the console terminal that is configured with the
board and vice versa.
Note:
For more information on Custom Serial Chat service, refer to
Custom Serial Chat Service Specification
1.12
Heart Rate Profile Application
The Heart Rate Profile application is used for enabling the collector device (GATT client) to connect and interact with
a heart rate sensor (GATT server) to be used in fitness applications. The heart rate sensor sends the heart rate
measurement in bpm (beats per minute), energy expended in kJ (kilojoules), and R-R intervals in seconds. In
addition to the heart rate service, this profile also implements the Device Information Service, which provides
information about the heart rate sensor device.
The heart rate profile provided by Bluetooth SIG defines three characteristics for the exchange of heart rate
parameters between the sensor and monitor. The characteristics of the profile are used to transfer heart rate
parameters like bpm, R-R interval measurements, and other parameters like body sensor location and energy
expended values. The optional “Heart Rate Control Point characteristic” is used by the heart rate monitor to reset the
energy expended in the heart rate sensor.
The heart rate sensor, which is the GATT server, holds the characteristics and sends the measurement values to the
heart rate monitor:
• The heart rate, R-R interval, and energy expended are sent using the heart rate measurement characteristics.
• The heart rate measurements are sent to the monitor on a value change if the monitor has enabled the
notifications.
• The body sensor location is read by the monitor via its body sensor location characteristic. The energy
expended sent in the heart rate measurement can be reset by the monitor by writing to the heart rate control
point characteristic.
Note:
The example application simulates the sensor measurements and sends them to the heart rate collector.
1.13
Blood Pressure Profile Application
The Blood Pressure Profile (BLP) application is used for connecting to and interacting with a device with a blood
pressure sensor device to be used in consumer and professional health care applications. This application enables
the device to obtain blood pressure measurement and other data from a non-invasive blood pressure sensor that
exposes the Blood Pressure service. For example, a nurse or doctor could use a non-invasive blood pressure sensor
on a patient that sends blood pressure measurements to a laptop or other hand held device.
Blood Pressure Measurements
The blood pressure measurement characteristic can be used to send blood pressure measurements.
• Flags field (containing units of blood pressure and used to show the presence of optional fields)
• Blood pressure measurement compound value field and, depending upon the contents of the Flags field
• Timestamp (time of the measurement)
• Pulse Rate
• User ID
• Measurement status fields
The intermediate cuff pressure characteristic may be sent frequently during the course of a measurement, so that a
receiving device can effectively update the display on its user interface during the measurement process.
When the client characteristic configuration descriptor is configured for indications and a blood pressure
measurement is available, this characteristic is indicated while in a connection. When the client characteristic
ATBTLC1000
Functional Overview
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2019 Microchip Technology Inc.
User Guide
DS50002640B-page 9