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 by 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 and interacting with a device with a
blood pressure sensor to be used in a 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 handheld device.
Blood Pressure Measurements
The blood pressure measurement characteristic can be used to send blood pressure measurements
containing the following information:
•
Flags field (containing units of blood pressure and used to show the presence of optional fields)
•
Blood pressure measurement compound value field, 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 notified 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 configuration descriptor is configured for indications and a blood pressure measurement is
available, this characteristic is indicated while in a connection.
•
The blood pressure measurement characteristic is used to send blood pressure measurements
•
The intermediate cuff pressure characteristic is used to send current cuff pressure values to a
device to display, while the measurement is in progress
•
The blood pressure feature characteristic is used to describe the supported features of the blood
pressure sensor
The ATSAMB11-MR/ZR simulates a blood pressure sensor (GATT server role) and sends simulated
values to the blood pressure monitor (Microchip SmartConnect mobile application).
ATSAMB11
©
2017 Microchip Technology Inc.
User Guide
DS70005335A-page 10
