Marcus Wong / Mbed OS HRS-Security

Implementation of Heart Rate Service on nRF52-DK with security (bonding/pairing procedure). Correct key for smartphone to enter is printed on serial. Baud rate 9600, 8 bits + 1 stop bit + no parity bit.

Fork of mbed-os-example-ble-HeartRate by mbed-os-examples

readme.md@1:72c60abef7e7, 2016-07-28 (annotated)

Committer:
mbed_official
Date:
Thu Jul 28 23:14:44 2016 +0100
Revision:
1:72c60abef7e7
Parent:
0:fb66cae3e9a1 
Merge branch 'master' of https://github.com/ARMmbed/mbed-os-example-ble





Commit copied from ./src/github.com/ARMmbed/mbed-os-example-ble

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 1:72c60abef7e7 1 # BLE Heart Rate Monitor
mbed_official 1:72c60abef7e7 2
mbed_official 1:72c60abef7e7 3 This 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_official 1:72c60abef7e7 4
mbed_official 1:72c60abef7e7 5 Technical details are better presented [in the mbed Classic equivalent of this example](https://developer.mbed.org/teams/Bluetooth-Low-Energy/code/BLE_HeartRate/).
mbed_official 1:72c60abef7e7 6
mbed_official 1:72c60abef7e7 7 # Running the application
mbed_official 1:72c60abef7e7 8
mbed_official 1:72c60abef7e7 9 ## Requirements
mbed_official 1:72c60abef7e7 10
mbed_official 1:72c60abef7e7 11 To 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_official 1:72c60abef7e7 12
mbed_official 1:72c60abef7e7 13 You could also use a generic BLE scanners:
mbed_official 1:72c60abef7e7 14
mbed_official 1:72c60abef7e7 15 - [nRF Master Control Panel](https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp) for Android.
mbed_official 1:72c60abef7e7 16
mbed_official 1:72c60abef7e7 17 - [LightBlue](https://itunes.apple.com/gb/app/lightblue-bluetooth-low-energy/id557428110?mt=8) for iPhone.
mbed_official 1:72c60abef7e7 18
mbed_official 1:72c60abef7e7 19 Hardware requirements are in the [main readme](https://github.com/ARMmbed/mbed-os-example-ble/blob/master/README.md).
mbed_official 1:72c60abef7e7 20
mbed_official 1:72c60abef7e7 21 ## Building instructions
mbed_official 1:72c60abef7e7 22
mbed_official 1:72c60abef7e7 23 Building instructions for all samples are in the [main readme](https://github.com/ARMmbed/mbed-os-example-ble/blob/master/README.md).
mbed_official 1:72c60abef7e7 24
mbed_official 1:72c60abef7e7 25 ## Checking for success
mbed_official 1:72c60abef7e7 26
mbed_official 1:72c60abef7e7 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_official 1:72c60abef7e7 28
mbed_official 1:72c60abef7e7 29 1. Build the application and install it on your board as explained in the building instructions.
mbed_official 1:72c60abef7e7 30 1. Open the BLE scanner on your phone.
mbed_official 1:72c60abef7e7 31 1. Start a scan.
mbed_official 1:72c60abef7e7 32
mbed_official 1:72c60abef7e7 33 ![](img/start_scan.png)
mbed_official 1:72c60abef7e7 34
mbed_official 1:72c60abef7e7 35 **figure 1** How to start scan using nRF Master Control Panel 4.0.5
mbed_official 1:72c60abef7e7 36
mbed_official 1:72c60abef7e7 37 1. Find your device; it should be named `HRM`.
mbed_official 1:72c60abef7e7 38
mbed_official 1:72c60abef7e7 39 ![](img/scan_result.png)
mbed_official 1:72c60abef7e7 40
mbed_official 1:72c60abef7e7 41 **figure 2** Scan results using nRF Master Control Panel 4.0.5
mbed_official 1:72c60abef7e7 42
mbed_official 1:72c60abef7e7 43 1. Establish a connection with your device.
mbed_official 1:72c60abef7e7 44
mbed_official 1:72c60abef7e7 45 ![](img/connection.png)
mbed_official 1:72c60abef7e7 46
mbed_official 1:72c60abef7e7 47 **figure 3** How to establish a connection using Master Control Panel 4.0.5
mbed_official 1:72c60abef7e7 48
mbed_official 1:72c60abef7e7 49 1. 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_official 1:72c60abef7e7 50
mbed_official 1:72c60abef7e7 51 ![](img/discovery.png)
mbed_official 1:72c60abef7e7 52
mbed_official 1:72c60abef7e7 53 **figure 4** Representation of the Heart Rate service using Master Control Panel 4.0.5
mbed_official 1:72c60abef7e7 54
mbed_official 1:72c60abef7e7 55 1. Register for the notifications sent by the *Heart Rate Measurement* characteristic.
mbed_official 1:72c60abef7e7 56
mbed_official 1:72c60abef7e7 57 ![](img/register_to_notifications.png)
mbed_official 1:72c60abef7e7 58
mbed_official 1:72c60abef7e7 59 **figure 5** How to register to notifications using Master Control Panel 4.0.5
mbed_official 1:72c60abef7e7 60
mbed_official 1:72c60abef7e7 61
mbed_official 1:72c60abef7e7 62 1. 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_official 1:72c60abef7e7 63
mbed_official 1:72c60abef7e7 64 ![](img/notifications.png)
mbed_official 1:72c60abef7e7 65
mbed_official 1:72c60abef7e7 66 **figure 6** Notifications view using Master Control Panel 4.0.5