This application transmits a heart rate value using the Bluetooth SIG Heart Rate Profile. The heart rate value is provided by the application itself, not by a sensor, so that you don't have to get a sensor just to run the example. The canonical source for this example lives at https://github.com/ARMmbed/mbed-os-example-ble/tree/master/BLE_HeartRate

BLE Heart Rate Monitor

This application transmits a heart rate value using the Bluetooth SIG Heart Rate Profile. The heart rate value is provided by the application itself, not by a sensor, so that you don't have to get a sensor just to run the example.

Technical details are better presented in the mbed Classic equivalent of this example.

Running the application

Requirements

To see the heart rate information on your phone, download Panobike for iOS or Android.

You could also use a generic BLE scanners:

- nRF Master Control Panel for Android.

- LightBlue for iPhone.

Hardware requirements are in the main readme.

Building instructions

Building with mbed-cli

If you'd like to use mbed-cli to build this, then you should refer to the main readme. The instructions here relate to using the developer.mbed.org Online Compiler

In order to build this example in the mbed Online Compiler, first import the example using the ‘Import’ button on the right hand side.

Next, select a platform to build for. This must either be a platform that supports BLE, for example the NRF51-DK, or one of the following:

List of platforms supporting Bluetooth Low Energy

Or you must also add a piece of hardware and the supporting library that includes a Bluetooth Low Energy driver for that hardware, for example the K64F or NUCLEO_F401RE with the X-NUCLEO-IDB05A1

List of components supporting Bluetooth Low Energy.

Once you have selected your platform, compile the example and drag and drop the resulting binary onto your board.

For general instructions on using the mbed Online Compiler, please see the mbed Handbook

Checking for success

Note: Screens captures depicted below show what is expected from this example if the scanner used is nRF Master Control Panel version 4.0.5. If you encounter any difficulties consider trying another scanner or another version of nRF Master Control Panel. Alternative scanners may require reference to their manuals.

/media/uploads/vcoubard/start_scan.png

figure 1 How to start scan using nRF Master Control Panel 4.0.5

/media/uploads/vcoubard/scan_result.png

figure 2 Scan results using nRF Master Control Panel 4.0.5

/media/uploads/vcoubard/connection.png

figure 3 How to establish a connection using Master Control Panel 4.0.5

/media/uploads/vcoubard/discovery.png

figure 4 Representation of the Heart Rate service using Master Control Panel 4.0.5

/media/uploads/vcoubard/register_to_notifications.png

figure 5 How to register to notifications using Master Control Panel 4.0.5

/media/uploads/vcoubard/notifications.png

figure 6 Notifications view using Master Control Panel 4.0.5

Committer:
mbed_official
Date:
Tue Mar 14 15:45:40 2017 +0000
Revision:
21:ec1d136a5a06
Parent:
0:fb66cae3e9a1
Merge pull request #68 from adbridge/master

Updating mbed-os to mbed-os-5.4.1
.
Commit copied from https://github.com/ARMmbed/mbed-os-example-ble

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official1:72c60abef7e7 1# BLE Heart Rate Monitor
mbed_official1:72c60abef7e7 2
mbed_official1:72c60abef7e7 3This application transmits a heart rate value using the [Bluetooth SIG Heart Rate Profile](https://developer.bluetooth.org/TechnologyOverview/Pages/HRP.aspx). The heart rate value is provided by the application itself, not by a sensor, so that you don't have to get a sensor just to run the example.
mbed_official1:72c60abef7e7 4
mbed_official1:72c60abef7e7 5Technical details are better presented [in the mbed Classic equivalent of this example](https://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_HeartRate/).
mbed_official1:72c60abef7e7 6
mbed_official1:72c60abef7e7 7# Running the application
mbed_official1:72c60abef7e7 8
mbed_official1:72c60abef7e7 9## Requirements
mbed_official1:72c60abef7e7 10
mbed_official1:72c60abef7e7 11To see the heart rate information on your phone, download Panobike for [iOS](https://itunes.apple.com/gb/app/panobike/id567403997?mt=8) or [Android](https://play.google.com/store/apps/details?id=com.topeak.panobike&hl=en).
mbed_official1:72c60abef7e7 12
mbed_official1:72c60abef7e7 13You could also use a generic BLE scanners:
mbed_official1:72c60abef7e7 14
mbed_official1:72c60abef7e7 15- [nRF Master Control Panel](https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp) for Android.
mbed_official1:72c60abef7e7 16
mbed_official1:72c60abef7e7 17- [LightBlue](https://itunes.apple.com/gb/app/lightblue-bluetooth-low-energy/id557428110?mt=8) for iPhone.
mbed_official1:72c60abef7e7 18
mbed_official1:72c60abef7e7 19Hardware requirements are in the [main readme](https://github.com/ARMmbed/mbed-os-example-ble/blob/master/README.md).
mbed_official1:72c60abef7e7 20
mbed_official1:72c60abef7e7 21## Building instructions
mbed_official1:72c60abef7e7 22
mbed_official1:72c60abef7e7 23Building instructions for all samples are in the [main readme](https://github.com/ARMmbed/mbed-os-example-ble/blob/master/README.md).
mbed_official1:72c60abef7e7 24
mbed_official1:72c60abef7e7 25## Checking for success
mbed_official1:72c60abef7e7 26
mbed_official1:72c60abef7e7 27**Note:** Screens captures depicted below show what is expected from this example if the scanner used is *nRF Master Control Panel* version 4.0.5. If you encounter any difficulties consider trying another scanner or another version of nRF Master Control Panel. Alternative scanners may require reference to their manuals.
mbed_official1:72c60abef7e7 28
mbed_official1:72c60abef7e7 291. Build the application and install it on your board as explained in the building instructions.
mbed_official1:72c60abef7e7 301. Open the BLE scanner on your phone.
mbed_official1:72c60abef7e7 311. Start a scan.
mbed_official1:72c60abef7e7 32
mbed_official1:72c60abef7e7 33 ![](img/start_scan.png)
mbed_official1:72c60abef7e7 34
mbed_official1:72c60abef7e7 35 **figure 1** How to start scan using nRF Master Control Panel 4.0.5
mbed_official1:72c60abef7e7 36
mbed_official1:72c60abef7e7 371. Find your device; it should be named `HRM`.
mbed_official1:72c60abef7e7 38
mbed_official1:72c60abef7e7 39 ![](img/scan_result.png)
mbed_official1:72c60abef7e7 40
mbed_official1:72c60abef7e7 41 **figure 2** Scan results using nRF Master Control Panel 4.0.5
mbed_official1:72c60abef7e7 42
mbed_official1:72c60abef7e7 431. Establish a connection with your device.
mbed_official1:72c60abef7e7 44
mbed_official1:72c60abef7e7 45 ![](img/connection.png)
mbed_official1:72c60abef7e7 46
mbed_official1:72c60abef7e7 47 **figure 3** How to establish a connection using Master Control Panel 4.0.5
mbed_official1:72c60abef7e7 48
mbed_official1:72c60abef7e7 491. Discover the services and the characteristics on the device. The *Heart Rate* service has the UUID `0x180D` and includes the *Heart Rate Measurement* characteristic which has the UUID `0x2A37`.
mbed_official1:72c60abef7e7 50
mbed_official1:72c60abef7e7 51 ![](img/discovery.png)
mbed_official1:72c60abef7e7 52
mbed_official1:72c60abef7e7 53 **figure 4** Representation of the Heart Rate service using Master Control Panel 4.0.5
mbed_official1:72c60abef7e7 54
mbed_official1:72c60abef7e7 551. Register for the notifications sent by the *Heart Rate Measurement* characteristic.
mbed_official1:72c60abef7e7 56
mbed_official1:72c60abef7e7 57 ![](img/register_to_notifications.png)
mbed_official1:72c60abef7e7 58
mbed_official1:72c60abef7e7 59 **figure 5** How to register to notifications using Master Control Panel 4.0.5
mbed_official1:72c60abef7e7 60
mbed_official1:72c60abef7e7 61
mbed_official1:72c60abef7e7 621. You should see the heart rate value change every half second. It begins at 100, goes up to 175 (in steps of 1), resets to 100 and so on.
mbed_official1:72c60abef7e7 63
mbed_official1:72c60abef7e7 64 ![](img/notifications.png)
mbed_official1:72c60abef7e7 65
mbed_official1:72c60abef7e7 66 **figure 6** Notifications view using Master Control Panel 4.0.5