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| <h2 id="ble-peripheral-project">BLE Peripheral Project</h2> |
| <h3 id="overview">Overview</h3> |
| <p><br></p> |
| <p>Now that we've gone through how BLE Apps are contructed, how they function, and how all the parts fit together |
| let's try out a BLE Peripheral App to see how it all works.</p> |
| <p><br></p> |
| <h3 id="prerequisites">Prerequisites</h3> |
| <p><br></p> |
| <ul> |
| <li>You should have a BLE Central App of some sort to connect with. On Mac OS or iOS, you can use <a href="https://itunes.apple.com/us/app/lightblue-explorer-bluetooth/id557428110?mt=8">LightBlue</a> |
| which is a free app to browse and connect to BLE Peripheral devices. </li> |
| </ul> |
| <p><br></p> |
| <h3 id="create-a-new-target">Create a New Target</h3> |
| <p>You can create a new project instead, but this tutorial will simply use the previously created bletiny project and add a new target for the BLE Peripheral</p> |
| <div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code>$ newt target create myperiph |
| Target targets/myperiph successfully created |
| $ newt target set myperiph bsp=@apache-mynewt-core/hw/bsp/nrf52dk |
| Target targets/myperiph successfully set target.bsp to @apache-mynewt-core/hw/bsp/nrf52dk |
| $ newt target set myperiph app=@apache-mynewt-core/apps/bleprph |
| Target targets/myperiph successfully set target.app to @apache-mynewt-core/apps/bleprph |
| $ newt target set myperiph build_profile=optimized |
| Target targets/myperiph successfully set target.build_profile to optimized |
| $ newt build myperiph |
| Building target targets/myperiph |
| ... |
| Linking ~/dev/nrf52dk/bin/targets/myperiph/app/apps/bleprph/bleprph.elf |
| Target successfully built: targets/myperiph |
| $ newt create-image myperiph 1.0.0 |
| App image succesfully generated: ~/dev/nrf52dk/bin/targets/myperiph/app/apps/bleprph/bleprph.img |
| $ newt load myperiph |
| Loading app image into slot 1 |
| </code></pre></div> |
| |
| <p>Now if you reset the board, and fire up your BLE Central App, you should see a new peripheral device called 'nimble-bleprph'.</p> |
| <p><br></p> |
| <p><img alt="LightBlue" src="../../pics/LightBlue-1.jpg" title="LightBlue iOS App with nimble-bleprph device" /></p> |
| <p><br></p> |
| <p>Now that you can see the device, you can begin to interact with the advertised service. </p> |
| <p>Click on the device and you'll establish a connection.</p> |
| <p><br></p> |
| <p><img alt="LightBlue" src="../../pics/LightBlue-2.jpg" title="LightBlue iOS App connected to the nimble-bleprph device" /></p> |
| <p><br></p> |
| <p>Now that you're connected, you can see the Services that are being advertised.</p> |
| <p>Scroll to the bottom and you will see a Read Characteristic, and a Read/Write Characteristic.</p> |
| <p><img alt="LightBlue" src="../../pics/LightBlue-3.jpg" title="LightBlue iOS App connected to the nimble-bleprph device" /></p> |
| <p><br></p> |
| <p>Just click on the Read Write Characteristic and you will see the existing value.</p> |
| <p><img alt="LightBlue" src="../../pics/LightBlue-4.jpg" title="LightBlue iOS App with nimble-bleprph device Characteristic" /></p> |
| <p><br></p> |
| <p>Type in a new value.</p> |
| <p><img alt="LightBlue" src="../../pics/LightBlue-5.jpg" title="LightBlue iOS App Value Change" /></p> |
| <p><br></p> |
| <p>And you will see the new value reflected.</p> |
| <p><img alt="LightBlue" src="../../pics/LightBlue-6.jpg" title="LightBlue iOS App with nimble-bleprph new value" /></p> |
| <p><br></p> |
| <p>If you still have your console connected, you will be able to see the connection requests, and pairing, |
| happen on the device as well.</p> |
| <p><br></p> |
| <div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%;"><span></span><code><span style="background-color: #ffffcc">258894:[ts=2022609336ssb, mod=64 level=1] connection established; status=0 handle=1 our_ota_addr_type=0 our_ota_addr=0a:0a:0a:0a:0a:0a our_id_addr_type=0 our_id_addr=0a:0a:0a:0a:0a:0a peer_ota_addr_type=1 peer_ota_addr=7f:be:d4:44:c0:d4 peer_id_addr_type=1 peer_id_addr=7f:be:d4:44:c0:d4 conn_itvl=24 conn_latency=0 supervision_timeout=72 encrypted=0 authenticated=0 bonded=0 |
| </span>258904:[ts=2022687456ssb, mod=64 level=1] |
| 258917:[ts=2022789012ssb, mod=64 level=1] mtu update event; conn_handle=1 cid=4 mtu=185 |
| 258925:[ts=2022851508ssb, mod=64 level=1] subscribe event; conn_handle=1 attr_handle=14 reason=1 prevn=0 curn=0 previ=0 curi=1 |
| 261486:[ts=2042859320ssb, mod=64 level=1] encryption change event; status=0 handle=1 our_ota_addr_type=0 our_ota_addr=0a:0a:0a:0a:0a:0a our_id_addr_type=0 our_id_addr=0a:0a:0a:0a:0a:0a peer_ota_addr_type=1 peer_ota_addr=7f:be:d4:44:c0:d4 peer_id_addr_type=1 peer_id_addr=7f:be:d4:44:c0:d4 conn_itvl=24 conn_latency=0 supervision_timeout=72 encrypted=1 authenticated=0 bonded=1 |
| 261496:[ts=2042937440ssb, mod=64 level=1] |
| </code></pre></div> |
| |
| <p><br></p> |
| <p>Congratulations! You've just built and connected your first BLE Peripheral device!</p> |
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