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href="../add_shell/">Enable the OS Shell and Console</a> + </li> + + + + + + <li > + <a href="../bletiny_project/">BLE app to check stats via console</a> + </li> + + + + + + + + <li ><a href="../bleprph/bleprph-intro/">BLE peripheral project</a> + + + </li> + + + + + + <li > + <a href="../ibeacon/">BLE iBeacon</a> + </li> + + + + + + <li > + <a href="../eddystone/">BLE Eddystone</a> + </li> + + + + + + <li > + <a href="../blehci_project/">BLE HCI interface</a> + </li> + + + + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li class="active"> + <a href="./">Add an Analog Sensor</a> + </li> + + + + </ul> + + </li> + + + + + + + + <li ><a href="../../os_user_guide/">OS User Guide</a> + + + </li> + + + + + + + + <li><a href=" + ../../../network/ble/ble_intro/ +">BLE User Guide</a> + + + </li> + + + + + + + + <li ><a href="../../../newt/newt_intro/">Newt Tool Guide</a> + + + </li> + + + + + + + + <li ><a href="../../../newtmgr/overview/">Newt Manager Guide</a> + + + </li> + + + + </ul> + + </li> + + + + + + + + <li><a href=" + ../../../faq/how_to_edit_docs/ +">Appendix</a> + + + </li> + + + + </ul> +</div></div> + + <div class="col-md-9" role="main"> + <div class="doc-header"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs pull-right"> + <li><a href="/develop/os/introduction">Docs</a></li> + + + + <li>» <a href="../../introduction/">Mynewt Documentation</a></li> + + + + <li>» <a href="../tutorials/">Tutorials</a></li> + + + + <li>» Add an Analog Sensor</li> + + + + </ul> +</div> + </div> + + <h2 id="adding-an-analog-sensor-on-nrf52">Adding an Analog Sensor on nRF52</h2> +<p><br></p> +<h3 id="objective">Objective</h3> +<p>We will be adding an analog sensor to the NRF52DK development board and using the Analog to Digital Converter +(ADC) to read the values from the sensor. It's also using Bluetooth to allow you to connect to the app and +read the value of the sensor. Please see the following section for the required hardware +in order to complete this tutorial.</p> +<p><br></p> +<h3 id="hardware-needed">Hardware needed</h3> +<ul> +<li>nRF52 Development Kit (one of the following)<ul> +<li>Dev Kit from Nordic - PCA 10040</li> +<li>Eval Kit from Rigado - BMD-300-EVAL-ES</li> +</ul> +</li> +<li>eTape Liquid Sensor -- buy from <a href="https://www.adafruit.com/products/1786";>Adafruit</a></li> +<li>Laptop running Mac OS</li> +<li>It is assumed you have already installed newt tool. </li> +<li>It is assumed you already installed native tools as described <a href="../../get_started/native_tools/">here</a></li> +</ul> +<p><br></p> +<h3 id="create-a-project">Create a project.</h3> +<p>Create a new project to hold your work. For a deeper understanding, you can read about project creation in +<a href="../../get_started/project_create/">Get Started -- Creating Your First Project</a> +or just follow the commands below.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"> $ mkdir ~/dev + $ cd ~/dev + $ newt new myadc + Downloading project skeleton from apache/incubator-mynewt-blinky... + Installing skeleton in myadc... + Project myadc successfully created. + $ cd myadc +</pre></div> + + +<p><br></p> +<h3 id="add-additional-repositories">Add Additional Repositories</h3> +<p>The board-specific libraries for the NRF52dk board are in an external repository at present, so +you'll need to include that remote repository and install it as well. If you're not familiar +with using repositories, see the section on <a href="../repo/add_repos/">repositories</a> before +continuing. Or just copy and paste the following.</p> +<p>In your <code>project.yml</code> file, add <code>mynewt_nordic</code> to the <code>project.repositories</code> section, and +then add the proper repository definition. When you're done, your <code>project.yml</code> file +should look like this:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">project.name: "my_project" + +project.repositories: + - apache-mynewt-core +<span style="background-color: #ffffcc"> - mynewt_nordic +</span> +# Use github's distribution mechanism for core ASF libraries. +# This provides mirroring automatically for us. +# +repository.apache-mynewt-core: + type: github + vers: 0-dev + user: apache + repo: incubator-mynewt-core +<span style="background-color: #ffffcc">repository.mynewt_nordic: +</span><span style="background-color: #ffffcc"> type: github +</span><span style="background-color: #ffffcc"> vers: 0-latest +</span><span style="background-color: #ffffcc"> user: runtimeinc +</span><span style="background-color: #ffffcc"> repo: mynewt_nordic +</span></pre></div> + + +<p><br></p> +<h3 id="install-everything">Install Everything</h3> +<p>Now that you have defined the needed repositories, it's time to install everything so +that you can get started.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"> $ newt install -v + apache-mynewt-core + Downloading repository description for apache-mynewt-core... success! + ... + apache-mynewt-core successfully installed version 0.9.0-none + ... + mynewt_nordic + Downloading repository description for mynewt_nordic... success! + ... + mynewt_nordic successfully installed version 0.9.9-none +</pre></div> + + +<p><br></p> +<h3 id="create-the-targets">Create the targets</h3> +<p>Create two targets - one for the bootloader and one for the nrf52 board. </p> +<p><font color="#F2853F"> +Note: The correct bsp must be chosen for the board you are using. </font></p> +<ul> +<li>For the Nordic Dev Kit choose @apache-mynewt-core/hw/bsp/nrf52dk instead (in the highlighted lines)</li> +<li>For the Rigado Eval Kit choose @apache-mynewt-core/hw/bsp/bmd300eval instead (in the highlighted lines)</li> +</ul> +<p>For the app itself we're going to extend the <a href="belpprph/bleprph-app.md">bleprph</a> app so that we +get the Bluetooth communications built in, so the first thing we'll need to do is copy that app +into our own app directory:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ mkdir -p apps/nrf52_adc +$ cp -Rp repos/apache-mynewt-core/apps/bleprph/* apps/nrf52_adc +</pre></div> + + +<p>Next, you'll modify the <code>pkg.yml</code> file for your app. Note the change in <code>pkg.name</code> and <code>pkg.description</code>. Also make sure that you specify the full path of all the packages with the prefix <code>@apache-mynewt-core/</code> as shown in the third highlighted line.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ cat apps/nrf52_adc/pkg.yml +... +<span style="background-color: #ffffcc">pkg.name: apps/nrf52_adc +</span>pkg.type: app +<span style="background-color: #ffffcc">pkg.description: Simple BLE peripheral application for ADC Sensors. +</span>pkg.author: "Apache Mynewt <[email protected]>" +pkg.homepage: "http://mynewt.apache.org/" +pkg.keywords: + +pkg.deps: +<span style="background-color: #ffffcc"> - "@apache-mynewt-core/boot/split" +</span> - "@apache-mynewt-core/kernel/os" + - "@apache-mynewt-core/mgmt/imgmgr" + - "@apache-mynewt-core/mgmt/newtmgr" + - "@apache-mynewt-core/mgmt/newtmgr/transport/ble" + - "@apache-mynewt-core/net/nimble/controller" + - "@apache-mynewt-core/net/nimble/host" + - "@apache-mynewt-core/net/nimble/host/services/ans" + - "@apache-mynewt-core/net/nimble/host/services/gap" + - "@apache-mynewt-core/net/nimble/host/services/gatt" + - "@apache-mynewt-core/net/nimble/host/store/ram" + - "@apache-mynewt-core/net/nimble/transport/ram" + - "@apache-mynewt-core/sys/console/full" + - "@apache-mynewt-core/sys/log/full" + - "@apache-mynewt-core/sys/stats/full" + - "@apache-mynewt-core/sys/sysinit" + - "@apache-mynewt-core/sys/id" +</pre></div> + + +<p>Great! We have our very own app so let's make sure we have all of our targets set +correctly:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ newt target create nrf52_adc +$ newt target set nrf52_adc app=apps/nrf52_adc +<span style="background-color: #ffffcc">Target targets/nrf52_adc successfully set target.app to apps/nrf52_adc +</span>$ newt target set nrf52_adc bsp=@apache-mynewt-core/hw/bsp/nrf52dk +$ newt target set nrf52_adc build_profile=debug + +$ newt target create nrf52_boot +<span style="background-color: #ffffcc">$ newt target set nrf52_boot app=@apache-mynewt-core/apps/boot +</span>$ newt target set nrf52_boot bsp=@apache-mynewt-core/hw/bsp/nrf52dk +$ newt target set nrf52_boot build_profile=optimized + +$ newt target show +targets/nrf52_adc + app=apps/nrf52_adc + bsp=@apache-mynewt-core/hw/bsp/nrf52dk + build_profile=debug +targets/nrf52_boot + app=@apache-mynewt-core/apps/boot + bsp=@apache-mynewt-core/hw/bsp/nrf52dk + build_profile=optimized +</pre></div> + + +<p><font color="#F2853F"> +Note: If you've already built and installed a bootloader for your NRF52dk then you do +not need to create a target for it here, or build and load it as below. </font> +<br></p> +<h3 id="build-the-target-executables">Build the target executables</h3> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ newt build nrf52_boot +... +Compiling boot.c +Archiving boot.a +Linking boot.elf +App successfully built: ~/dev/myadc/bin/nrf52_boot/apps/boot/boot.elf +</pre></div> + + +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ newt build nrf52_adc +... +Compiling main.c +Archiving nrf52_adc.a +Linking nrf52_adc.elf +App successfully built: ~/dev/myadc/bin/nrf52_adc/apps/nrf52_adc/nrf52_adc.elf +</pre></div> + + +<p><br></p> +<h3 id="sign-and-create-the-nrf52_adc-application-image">Sign and create the nrf52_adc application image</h3> +<p>You must sign and version your application image to download it using newt to the board. +Use the newt create-image command to perform this action. You may assign an arbitrary +version (e.g. 1.0.0) to the image.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ newt create-image nrf52_adc 1.0.0 +App image successfully generated: ~/dev/myadc/bin/nrf52_adc/apps/nrf52_adc/nrf52_adc.img +Build manifest: ~/dev/myadc/bin/nrf52_adc/apps/nrf52_adc/manifest.json +</pre></div> + + +<p><br></p> +<h3 id="connect-the-board">Connect the board</h3> +<p>Connect the evaluation board via micro-USB to your PC via USB cable.</p> +<p><br></p> +<h3 id="download-to-the-target">Download to the target</h3> +<p>Download the bootloader first and then the nrf52_adc executable to the target platform. +Don't forget to reset the board if you don't see the LED blinking right away!</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ newt load nrf52_boot +$ newt load nrf52_adc +</pre></div> + + +<p><br></p> +<p><strong>Note:</strong> If you want to erase the flash and load the image again, you can use JLinkExe to issue an <code>erase</code> command.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">$ JLinkExe -device nRF52 -speed 4000 -if SWD +SEGGER J-Link Commander V5.12c (Compiled Apr 21 2016 16:05:51) +DLL version V5.12c, compiled Apr 21 2016 16:05:45 + +Connecting to J-Link via USB...O.K. +Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 15 2016 18:03:17 +Hardware version: V1.00 +S/N: 682863966 +VTref = 3.300V + + +Type "connect" to establish a target connection, '?' for help +J-Link>erase +Cortex-M4 identified. +Erasing device (0;?i?)... +Comparing flash [100%] Done. +Erasing flash [100%] Done. +Verifying flash [100%] Done. +J-Link: Flash download: Total time needed: 0.363s (Prepare: 0.093s, Compare: 0.000s, Erase: 0.262s, Program: 0.000s, Verify: 0.000s, Restore: 0.008s) +Erasing done. +J-Link>exit +$ +</pre></div> + + +<p><br></p> +<p>So you have a BLE app, but really all you've done is change the name of the <strong>bleprph</strong> app to <strong>nrf52_adc</strong> and load that. +Not all that impressive, and it certainly won't read an Analog Sensor right now. So let's do that next. In order to +read an ADC sensor, and since the ADC package is in an external, licensed, repository, we'll create a driver for it +here in our app that will leverage the existing driver in the external repository. It adds another layer of +indirection, but it will also give us a look at building our own driver, so we'll do it this way. </p> +<p><br></p> +<h3 id="building-a-driver">Building a Driver</h3> +<p>The first thing to do is to create the directory structure for your driver:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">[user@IsMyLaptop:~/src/air_quality]$ mkdir -p libs/my_drivers/myadc/include/myadc +[user@IsMyLaptop:~/src/air_quality]$ mkdir -p libs/my_drivers/myadc/src +</pre></div> + + +<p>Now you can add the files you need. You'll need a pkg.yml to describe the driver, and then header stub followed by source stub.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">[user@IsMyLaptop:~/src/air_quality]$ cat libs/my_drivers/myadc/pkg.yml +</pre></div> + + +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #633820">#</span> +<span style="color: #633820"># Licensed to the Apache Software Foundation (ASF) under one</span> +<span style="color: #633820"># or more contributor license agreements. See the NOTICE file</span> +<span style="color: #633820"># distributed with this work for additional information</span> +<span style="color: #633820"># regarding copyright ownership. The ASF licenses this file</span> +<span style="color: #633820"># to you under the Apache License, Version 2.0 (the</span> +<span style="color: #633820"># "License"); you may not use this file except in compliance</span> +<span style="color: #633820"># with the License. You may obtain a copy of the License at</span> +<span style="color: #633820"># </span> +<span style="color: #633820"># http:</span><span style="color: #177500">//www.apache.org/licenses/LICENSE-2.0</span> +<span style="color: #633820">#</span> +<span style="color: #633820"># Unless required by applicable law or agreed to in writing,</span> +<span style="color: #633820"># software distributed under the License is distributed on an</span> +<span style="color: #633820"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> +<span style="color: #633820"># KIND, either express or implied. See the License for the</span> +<span style="color: #633820"># specific language governing permissions and limitations</span> +<span style="color: #633820"># under the License.</span> +<span style="color: #633820">#</span> +<span style="color: #000000">pkg</span>.<span style="color: #000000">name</span>: <span style="color: #000000">libs/my_drivers/myadc</span> +<span style="color: #000000">pkg</span>.<span style="color: #000000">deps</span>: + <span style="color: #000000">-</span> <span style="color: #C41A16">"@apache-mynewt-core/hw/hal"</span> + <span style="color: #000000">-</span> <span style="color: #C41A16">"@mynewt_nordic/hw/drivers/adc/adc_nrf52"</span> +</pre></div> + + +<p>First, let's create the required header file <code>myadc.h</code> in the includes directory i.e. <code>libs/my_drivers/myadc/include/myadc/myadc.h</code>. +It's a pretty straightforward header file, since we only need to do 2 things:</p> +<ul> +<li>Initialize the ADC device</li> +<li>Read ADC Values</li> +</ul> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #633820">#ifndef _NRF52_ADC_H_</span> +<span style="color: #633820">#define _NRF52_ADC_H_</span> + +<span style="color: #A90D91">void</span> <span style="color: #000000">*</span> <span style="color: #000000">adc_init</span>(<span style="color: #A90D91">void</span>); +<span style="color: #A90D91">int</span> <span style="color: #000000">adc_read</span>(<span style="color: #A90D91">void</span> <span style="color: #000000">*buffer</span>, <span style="color: #A90D91">int</span> <span style="color: #000000">buffer_len</span>); + +<span style="color: #633820">#endif </span><span style="color: #177500">/* _NRF52_ADC_H_ */</span><span style="color: #633820"></span> +</pre></div> + + +<p>Next we'll need a corresponding source file <code>myadc.c</code> in the src directory. This is where +we'll implement the specifics of the driver:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #633820">#include <assert.h></span> +<span style="color: #633820">#include <os/os.h></span> +<span style="color: #177500">/* ADC */</span> +<span style="color: #633820">#include "myadc/myadc.h"</span> +<span style="color: #633820">#include "nrf.h"</span> +<span style="color: #633820">#include "app_util_platform.h"</span> +<span style="color: #633820">#include "app_error.h"</span> +<span style="color: #633820">#include <adc/adc.h></span> +<span style="color: #633820">#include <adc_nrf52/adc_nrf52.h></span> +<span style="color: #633820">#include "nrf_drv_saadc.h"</span> + + +<span style="color: #633820">#define ADC_NUMBER_SAMPLES (2)</span> +<span style="color: #633820">#define ADC_NUMBER_CHANNELS (1)</span> + +<span style="color: #A90D91">nrf_drv_saadc_config_t</span> <span style="color: #000000">adc_config</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_DRV_SAADC_DEFAULT_CONFIG</span>; + +<span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">*adc</span>; +<span style="color: #A90D91">uint8_t</span> <span style="color: #000000">*sample_buffer1</span>; +<span style="color: #A90D91">uint8_t</span> <span style="color: #000000">*sample_buffer2</span>; + +<span style="color: #A90D91">static</span> <span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">os_bsp_adc0</span>; +<span style="color: #A90D91">static</span> <span style="color: #A90D91">nrf_drv_saadc_config_t</span> <span style="color: #000000">os_bsp_adc0_config</span> <span style="color: #000000">=</span> { + .<span style="color: #000000">resolution</span> <span style="color: #000000">=</span> <span style="color: #000000">MYNEWT_VAL</span>(<span style="color: #000000">ADC_0_RESOLUTION</span>), + .<span style="color: #000000">oversample</span> <span style="color: #000000">=</span> <span style="color: #000000">MYNEWT_VAL</span>(<span style="color: #000000">ADC_0_OVERSAMPLE</span>), + .<span style="color: #000000">interrupt_priority</span> <span style="color: #000000">=</span> <span style="color: #000000">MYNEWT_VAL</span>(<span style="color: #000000">ADC_0_INTERRUPT_PRIORITY</span>), +}; +<span style="color: #A90D91">void</span> <span style="color: #000000">*</span> +<span style="color: #000000">adc_init</span>(<span style="color: #A90D91">void</span>) +{ + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #1C01CE">0</span>; + + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_dev_create</span>((<span style="color: #A90D91">struct</span> <span style="color: #000000">os_dev</span> <span style="color: #000000">*</span>) <span style="color: #000000">&os_bsp_adc0</span>, <span style="color: #C41A16">"adc0"</span>, + <span style="color: #000000">OS_DEV_INIT_KERNEL</span>, <span style="color: #000000">OS_DEV_INIT_PRIO_DEFAULT</span>, + <span style="color: #000000">nrf52_adc_dev_init</span>, <span style="color: #000000">&os_bsp_adc0_config</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>); + <span style="color: #A90D91">nrf_saadc_channel_config_t</span> <span style="color: #000000">cc</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE</span>(<span style="color: #000000">NRF_SAADC_INPUT_AIN1</span>); + <span style="color: #000000">cc</span>.<span style="color: #000000">gain</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_SAADC_GAIN1_6</span>; + <span style="color: #000000">cc</span>.<span style="color: #000000">reference</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_SAADC_REFERENCE_INTERNAL</span>; + <span style="color: #000000">adc</span> <span style="color: #000000">=</span> (<span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">*</span>) <span style="color: #000000">os_dev_open</span>(<span style="color: #C41A16">"adc0"</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">&adc_config</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">adc</span> <span style="color: #000000">!=</span> <span style="color: #A90D91">NULL</span>); + <span style="color: #000000">adc_chan_config</span>(<span style="color: #000000">adc</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">&cc</span>); + <span style="color: #000000">sample_buffer1</span> <span style="color: #000000">=</span> <span style="color: #000000">malloc</span>(<span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">sample_buffer2</span> <span style="color: #000000">=</span> <span style="color: #000000">malloc</span>(<span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">memset</span>(<span style="color: #000000">sample_buffer1</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">memset</span>(<span style="color: #000000">sample_buffer2</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">adc_buf_set</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">sample_buffer1</span>, <span style="color: #000000">sample_buffer2</span>, + <span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #A90D91">return</span> <span style="color: #000000">adc</span>; +} + + +<span style="color: #A90D91">int</span> +<span style="color: #000000">adc_read</span>(<span style="color: #A90D91">void</span> <span style="color: #000000">*buffer</span>, <span style="color: #A90D91">int</span> <span style="color: #000000">buffer_len</span>) +{ + <span style="color: #A90D91">int</span> <span style="color: #000000">i</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">adc_result</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">my_result_mv</span> <span style="color: #000000">=</span> <span style="color: #1C01CE">0</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span>; + <span style="color: #A90D91">for</span> (<span style="color: #000000">i</span> <span style="color: #000000">=</span> <span style="color: #1C01CE">0</span>; <span style="color: #000000">i</span> <span style="color: #000000"><</span> <span style="color: #000000">ADC_NUMBER_SAMPLES</span>; <span style="color: #000000">i++</span>) { + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_buf_read</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">buffer</span>, <span style="color: #000000">buffer_len</span>, <span style="color: #000000">i</span>, <span style="color: #000000">&adc_result</span>); + <span style="color: #A90D91">if</span> (<span style="color: #000000">rc</span> <span style="color: #000000">!=</span> <span style="color: #1C01CE">0</span>) { + <span style="color: #A90D91">goto</span> <span style="color: #000000">err</span>; + } + <span style="color: #000000">my_result_mv</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_result_mv</span>(<span style="color: #000000">adc</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">adc_result</span>); + } + <span style="color: #000000">adc_buf_release</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">buffer</span>, <span style="color: #000000">buffer_len</span>); + <span style="color: #A90D91">return</span> <span style="color: #000000">my_result_mv</span>; +<span style="color: #000000">err</span>: + <span style="color: #A90D91">return</span> (<span style="color: #000000">rc</span>); +} +</pre></div> + + +<p>There's a lot going on in here, so let's walk through it step by step. </p> +<p>First, we define a default configuration, with the resolution, oversample and interrupt priority. You'll see +that these are <code>MYNEWT_VAL</code> values, which means that we'll define them shortly in +a <code>syscfg.yml</code> file to be passed to the compiler at build time. </p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">static</span> <span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">os_bsp_adc0</span>; +<span style="color: #A90D91">static</span> <span style="color: #A90D91">nrf_drv_saadc_config_t</span> <span style="color: #000000">os_bsp_adc0_config</span> <span style="color: #000000">=</span> { + .<span style="color: #000000">resolution</span> <span style="color: #000000">=</span> <span style="color: #000000">MYNEWT_VAL</span>(<span style="color: #000000">ADC_0_RESOLUTION</span>), + .<span style="color: #000000">oversample</span> <span style="color: #000000">=</span> <span style="color: #000000">MYNEWT_VAL</span>(<span style="color: #000000">ADC_0_OVERSAMPLE</span>), + .<span style="color: #000000">interrupt_priority</span> <span style="color: #000000">=</span> <span style="color: #000000">MYNEWT_VAL</span>(<span style="color: #000000">ADC_0_INTERRUPT_PRIORITY</span>), +}; +</pre></div> + + +<p>Next, in <code>adc_init()</code> , we need to tell the OS to create the device.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">void</span> <span style="color: #000000">*</span> +<span style="color: #000000">adc_init</span>(<span style="color: #A90D91">void</span>) +{ + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #1C01CE">0</span>; + + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_dev_create</span>((<span style="color: #A90D91">struct</span> <span style="color: #000000">os_dev</span> <span style="color: #000000">*</span>) <span style="color: #000000">&os_bsp_adc0</span>, <span style="color: #C41A16">"adc0"</span>, + <span style="color: #000000">OS_DEV_INIT_KERNEL</span>, <span style="color: #000000">OS_DEV_INIT_PRIO_DEFAULT</span>, + <span style="color: #000000">nrf52_adc_dev_init</span>, <span style="color: #000000">&os_bsp_adc0_config</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>); + <span style="color: #A90D91">nrf_saadc_channel_config_t</span> <span style="color: #000000">cc</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE</span>(<span style="color: #000000">NRF_SAADC_INPUT_AIN1</span>); + <span style="color: #000000">cc</span>.<span style="color: #000000">gain</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_SAADC_GAIN1_6</span>; + <span style="color: #000000">cc</span>.<span style="color: #000000">reference</span> <span style="color: #000000">=</span> <span style="color: #000000">NRF_SAADC_REFERENCE_INTERNAL</span>; + <span style="color: #000000">adc</span> <span style="color: #000000">=</span> (<span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">*</span>) <span style="color: #000000">os_dev_open</span>(<span style="color: #C41A16">"adc0"</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">&adc_config</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">adc</span> <span style="color: #000000">!=</span> <span style="color: #A90D91">NULL</span>); + <span style="color: #000000">adc_chan_config</span>(<span style="color: #000000">adc</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">&cc</span>); + <span style="color: #000000">sample_buffer1</span> <span style="color: #000000">=</span> <span style="color: #000000">malloc</span>(<span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">sample_buffer2</span> <span style="color: #000000">=</span> <span style="color: #000000">malloc</span>(<span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">memset</span>(<span style="color: #000000">sample_buffer1</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">memset</span>(<span style="color: #000000">sample_buffer2</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #000000">adc_buf_set</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">sample_buffer1</span>, <span style="color: #000000">sample_buffer2</span>, + <span style="color: #000000">adc_buf_size</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">ADC_NUMBER_CHANNELS</span>, <span style="color: #000000">ADC_NUMBER_SAMPLES</span>)); + <span style="color: #A90D91">return</span> <span style="color: #000000">adc</span>; +} +</pre></div> + + +<p>A few things need to be said about this part, as it is the most confusing. First, +we're using a <strong>default</strong> configuration for the ADC Channel via the <code>NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE</code> +macro. The important part here is that we're actually using <code>AIN1</code>. I know what you're thinking, "But +we want ADC-0!" and that's true. The board is actually labelled 'A0, A1, A2' etc., and the actual pin +numbers are also listed on the board, which seems handy. At first. But it gets messy very quickly.</p> +<p>If you try to use AIN0, and then go poke around in the registers while this is running, </p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">(gdb) p/x {NRF_SAADC_Type}0x40007000 +... + CH = {{ + PSELP = 0x1, + PSELN = 0x0, + CONFIG = 0x20000, + LIMIT = 0x7fff8000 + }, +</pre></div> + + +<p>You'll see that the pin for channel 0 is set to 1, which corresponds to AIN0, but that's <strong>NOT</strong> +the same as A0 -- pin P0.03, the one we're using. For that, you use AIN1, which would set the +pin value to 2. Messy. Someone, somewhere, thought this made sense. </p> +<p>The only other thing to note here is that we're using the internal reference voltage, rather than +setting our own. There's nothing wrong with that, but since we are, we'll have to crank up +the gain a bit by using <code>NRF_SAADC_GAIN1_6</code>.</p> +<p>Then, in <code>adc_read()</code> we will take readings, convert the raw readings to +a millivolt equivalent, and return the result. </p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">int</span> +<span style="color: #000000">adc_read</span>(<span style="color: #A90D91">void</span> <span style="color: #000000">*buffer</span>, <span style="color: #A90D91">int</span> <span style="color: #000000">buffer_len</span>) +{ + <span style="color: #A90D91">int</span> <span style="color: #000000">i</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">adc_result</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">my_result_mv</span> <span style="color: #000000">=</span> <span style="color: #1C01CE">0</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span>; + <span style="color: #A90D91">for</span> (<span style="color: #000000">i</span> <span style="color: #000000">=</span> <span style="color: #1C01CE">0</span>; <span style="color: #000000">i</span> <span style="color: #000000"><</span> <span style="color: #000000">ADC_NUMBER_SAMPLES</span>; <span style="color: #000000">i++</span>) { + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_buf_read</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">buffer</span>, <span style="color: #000000">buffer_len</span>, <span style="color: #000000">i</span>, <span style="color: #000000">&adc_result</span>); + <span style="color: #A90D91">if</span> (<span style="color: #000000">rc</span> <span style="color: #000000">!=</span> <span style="color: #1C01CE">0</span>) { + <span style="color: #A90D91">goto</span> <span style="color: #000000">err</span>; + } + <span style="color: #000000">my_result_mv</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_result_mv</span>(<span style="color: #000000">adc</span>, <span style="color: #1C01CE">0</span>, <span style="color: #000000">adc_result</span>); + } + <span style="color: #000000">adc_buf_release</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">buffer</span>, <span style="color: #000000">buffer_len</span>); + <span style="color: #A90D91">return</span> <span style="color: #000000">my_result_mv</span>; +<span style="color: #000000">err</span>: + <span style="color: #A90D91">return</span> (<span style="color: #000000">rc</span>); +} +</pre></div> + + +<p>Finally, we'll need some settings for our driver, as mentioned earlier. In the <code>myadc</code> directory +you'll need to add a <code>syscfg.yml</code> file:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"># Package: libs/my_driver/myadc + +syscfg.defs: + ADC_0: + description: 'TBD' + value: 1 + ADC_0_RESOLUTION: + description: 'TBD' + value: 'SAADC_CONFIG_RESOLUTION' + ADC_0_OVERSAMPLE: + description: 'TBD' + value: 'SAADC_CONFIG_OVERSAMPLE' + ADC_0_INTERRUPT_PRIORITY: + description: 'TBD' + value: 'SAADC_CONFIG_IRQ_PRIORITY' +</pre></div> + + +<p>Once that's all done, you should have a working ADC Driver for your NRF52DK board. The last step in getting the driver set up is to include it in the package dependency defined by <code>pkg.deps</code> in the <code>pkg.yml</code> file of your app. Add it in <code>apps/nrf52_adc/pkg.yml</code> as shown by the highlighted line below.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"># Licensed to the Apache Software Foundation (ASF) under one +# <snip> + +pkg.name: apps/nrf52_adc +pkg.type: app +pkg.description: Simple BLE peripheral application for ADC sensor. +pkg.author: "Apache Mynewt <[email protected]>" +pkg.homepage: "http://mynewt.apache.org/" +pkg.keywords: + +pkg.deps: + - "@apache-mynewt-core/boot/split" + - "@apache-mynewt-core/kernel/os" + - "@apache-mynewt-core/mgmt/imgmgr" + - "@apache-mynewt-core/mgmt/newtmgr" + - "@apache-mynewt-core/mgmt/newtmgr/transport/ble" + - "@apache-mynewt-core/net/nimble/controller" + - "@apache-mynewt-core/net/nimble/host" + - "@apache-mynewt-core/net/nimble/host/services/ans" + - "@apache-mynewt-core/net/nimble/host/services/gap" + - "@apache-mynewt-core/net/nimble/host/services/gatt" + - "@apache-mynewt-core/net/nimble/host/store/ram" + - "@apache-mynewt-core/net/nimble/transport/ram" + - "@apache-mynewt-core/sys/console/full" + - "@apache-mynewt-core/sys/log/full" + - "@apache-mynewt-core/sys/stats/full" + - "@apache-mynewt-core/sys/sysinit" + - "@apache-mynewt-core/sys/id" +<span style="background-color: #ffffcc"> - libs/my_drivers/myadc +</span></pre></div> + + +<p><br></p> +<h3 id="creating-the-adc-task">Creating the ADC Task</h3> +<p>Now that the driver is done, we'll need to add calls to the main app's <code>main.c</code> file, as well +as a few other things. First, we'll need to update the includes, and add a task for our ADC +sampling.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #633820">#include "myadc/myadc.h"</span> +... +<span style="color: #177500">/* ADC Task settings */</span> +<span style="color: #633820">#define ADC_TASK_PRIO 5</span> +<span style="color: #633820">#define ADC_STACK_SIZE (OS_STACK_ALIGN(336))</span> +<span style="color: #A90D91">struct</span> <span style="color: #000000">os_eventq</span> <span style="color: #000000">adc_evq</span>; +<span style="color: #A90D91">struct</span> <span style="color: #000000">os_task</span> <span style="color: #000000">adc_task</span>; +<span style="color: #A90D91">bssnz_t</span> <span style="color: #A90D91">os_stack_t</span> <span style="color: #000000">adc_stack</span>[<span style="color: #000000">ADC_STACK_SIZE</span>]; +</pre></div> + + +<p>Next we'll need o initialize the task <code>event_q</code> so we'll add the highlighted code to <code>main()</code> as shown below:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"> <span style="color: #177500">/* Set the default device name. */</span> + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">ble_svc_gap_device_name_set</span>(<span style="color: #C41A16">"nimble-adc"</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>); + + <span style="color: #000000">conf_load</span>(); + +<span style="background-color: #ffffcc"> <span style="color: #177500">/* Initialize adc sensor task eventq */</span> +</span><span style="background-color: #ffffcc"> <span style="color: #000000">os_eventq_init</span>(<span style="color: #000000">&adc_evq</span>); +</span><span style="background-color: #ffffcc"> +</span><span style="background-color: #ffffcc"> <span style="color: #177500">/* Create the ADC reader task. </span> +</span><span style="background-color: #ffffcc"><span style="color: #177500"> * All sensor operations are performed in this task.</span> +</span><span style="background-color: #ffffcc"><span style="color: #177500"> */</span> +</span><span style="background-color: #ffffcc"> <span style="color: #000000">os_task_init</span>(<span style="color: #000000">&adc_task</span>, <span style="color: #C41A16">"sensor"</span>, <span style="color: #000000">adc_task_handler</span>, +</span><span style="background-color: #ffffcc"> <span style="color: #A90D91">NULL</span>, <span style="color: #000000">ADC_TASK_PRIO</span>, <span style="color: #000000">OS_WAIT_FOREVER</span>, +</span><span style="background-color: #ffffcc"> <span style="color: #000000">adc_stack</span>, <span style="color: #000000">ADC_STACK_SIZE</span>); +</span></pre></div> + + +<p>We'll need that <code>adc_task_handler()</code> function to exist, and that's where we'll initialize the ADC Device +and set the event handler. In the task's while() loop, we'll just make a call to <code>adc_sample()</code> to cause +the ADC driver to sample the adc device.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #177500">/**</span> +<span style="color: #177500"> * Event loop for the sensor task.</span> +<span style="color: #177500"> */</span> +<span style="color: #A90D91">static</span> <span style="color: #A90D91">void</span> +<span style="color: #000000">adc_task_handler</span>(<span style="color: #A90D91">void</span> <span style="color: #000000">*unused</span>) +{ + <span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">*adc</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span>; + <span style="color: #177500">/* ADC init */</span> + <span style="color: #000000">adc</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_init</span>(); + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_event_handler_set</span>(<span style="color: #000000">adc</span>, <span style="color: #000000">adc_read_event</span>, (<span style="color: #A90D91">void</span> <span style="color: #000000">*</span>) <span style="color: #A90D91">NULL</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>); + + <span style="color: #A90D91">while</span> (<span style="color: #1C01CE">1</span>) { + <span style="color: #000000">adc_sample</span>(<span style="color: #000000">adc</span>); + <span style="color: #177500">/* Wait 2 second */</span> + <span style="color: #000000">os_time_delay</span>(<span style="color: #000000">OS_TICKS_PER_SEC</span> <span style="color: #000000">*</span> <span style="color: #1C01CE">2</span>); + } +} +</pre></div> + + +<p>Above the <code>adc_task_handler</code>, add code to handle the <code>adc_read_event()</code> calls:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">int</span> +<span style="color: #000000">adc_read_event</span>(<span style="color: #A90D91">struct</span> <span style="color: #000000">adc_dev</span> <span style="color: #000000">*dev</span>, <span style="color: #A90D91">void</span> <span style="color: #000000">*arg</span>, <span style="color: #A90D91">uint8_t</span> <span style="color: #000000">etype</span>, + <span style="color: #A90D91">void</span> <span style="color: #000000">*buffer</span>, <span style="color: #A90D91">int</span> <span style="color: #000000">buffer_len</span>) +{ + <span style="color: #A90D91">int</span> <span style="color: #000000">value</span>; + <span style="color: #A90D91">uint16_t</span> <span style="color: #000000">chr_val_handle</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span>; + + <span style="color: #000000">value</span> <span style="color: #000000">=</span> <span style="color: #000000">adc_read</span>(<span style="color: #000000">buffer</span>, <span style="color: #000000">buffer_len</span>); + <span style="color: #A90D91">if</span> (<span style="color: #000000">value</span> <span style="color: #000000">>=</span> <span style="color: #1C01CE">0</span>) { + <span style="color: #000000">console_printf</span>(<span style="color: #C41A16">"Got %d\n"</span>, <span style="color: #000000">value</span>); + } <span style="color: #A90D91">else</span> { + <span style="color: #000000">console_printf</span>(<span style="color: #C41A16">"Error while reading: %d\n"</span>, <span style="color: #000000">value</span>); + <span style="color: #A90D91">goto</span> <span style="color: #000000">err</span>; + } + <span style="color: #000000">gatt_adc_val</span> <span style="color: #000000">=</span> <span style="color: #000000">value</span>; + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">ble_gatts_find_chr</span>(<span style="color: #000000">&gatt_svr_svc_adc_uuid</span>.<span style="color: #000000">u</span>, <span style="color: #000000">BLE_UUID16_DECLARE</span>(<span style="color: #000000">ADC_SNS_VAL</span>), <span style="color: #A90D91">NULL</span>, <span style="color: #000000">&chr_val_handle</span>); + <span style="color: #000000">assert</span>(<span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span>); + <span style="color: #000000">ble_gatts_chr_updated</span>(<span style="color: #000000">chr_val_handle</span>); + <span style="color: #A90D91">return</span> (<span style="color: #1C01CE">0</span>); +<span style="color: #000000">err</span>: + <span style="color: #A90D91">return</span> (<span style="color: #000000">rc</span>); +} +</pre></div> + + +<p>This is where we actually read the ADC value and then update the BLE Characteristic for that value. </p> +<p>But wait, we haven't defined those BLE services and characteristics yet! Right, so don't try to build and run this +app just yet or it will surely fail. Instead, move on to the next section and get all of those services +defined.</p> +<p><br></p> +<h3 id="building-the-ble-services">Building the BLE Services</h3> +<p>If the nrf52_adc app is going to be a Bluetooth-enabled sensor app that will allow you to read the value of the eTape Water Level Sensor +via Bluetooth we'll need to actually define those Services and Characteristics.</p> +<p>As with the <a href="../bleprph/bleprph-app/">ble peripheral</a> app, we will advertise a couple of values from our app. The first is +not strictly necessary, but it will help us build an iOS app later. We've defined a service and the characteristics in +that service in <code>bleadc.h</code> in the <code>apps/nrf52_adc/src/</code> directory as follows:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #177500">/* Sensor Data */</span> +<span style="color: #177500">/* e761d2af-1c15-4fa7-af80-b5729002b340 */</span> +<span style="color: #A90D91">static</span> <span style="color: #A90D91">const</span> <span style="color: #A90D91">ble_uuid128_t</span> <span style="color: #000000">gatt_svr_svc_adc_uuid</span> <span style="color: #000000">=</span> + <span style="color: #000000">BLE_UUID128_INIT</span>(<span style="color: #1C01CE">0x40</span>, <span style="color: #1C01CE">0xb3</span>, <span style="color: #1C01CE">0x20</span>, <span style="color: #1C01CE">0x90</span>, <span style="color: #1C01CE">0x72</span>, <span style="color: #1C01CE">0xb5</span>, <span style="color: #1C01CE">0x80</span>, <span style="color: #1C01CE">0xaf</span>, + <span style="color: #1C01CE">0xa7</span>, <span style="color: #1C01CE">0x4f</span>, <span style="color: #1C01CE">0x15</span>, <span style="color: #1C01CE">0x1c</span>, <span style="color: #1C01CE">0xaf</span>, <span style="color: #1C01CE">0xd2</span>, <span style="color: #1C01CE">0x61</span>, <span style="color: #1C01CE">0xe7</span>); +<span style="color: #633820">#define ADC_SNS_TYPE 0xDEAD</span> +<span style="color: #633820">#define ADC_SNS_STRING "eTape Liquid Level Sensor"</span> +<span style="color: #633820">#define ADC_SNS_VAL 0xBEAD</span> +<span style="color: #A90D91">extern</span> <span style="color: #A90D91">uint16_t</span> <span style="color: #000000">gatt_adc_val</span>; +</pre></div> + + +<p>The first is the UUID of the service, followed by the 2 characteristics we are going to offer. +The first characteristic is going to advertise the <em>type</em> of sensor we are advertising, and +it will be a read-only characteristic. The second characteristic will be the sensor value +itself, and we will allow connected devices to 'subscribe' to it in order to get +constantly-updated values.</p> +<p><strong>Note:</strong> You can choose any valid Characteristic UUIDs to go here. We're using these values +for illustrative purposes only.</p> +<p>The value that we'll be updating is also defined here as <code>gatt_adc_val</code>.</p> +<p>If we then go look at <code>gatt_srv.c</code> we can see the structure of the service and +characteristic offering that we set up:</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">static</span> <span style="color: #A90D91">const</span> <span style="color: #A90D91">struct</span> <span style="color: #000000">ble_gatt_svc_def</span> <span style="color: #000000">gatt_svr_svcs</span>[] <span style="color: #000000">=</span> { + { + <span style="color: #177500">/*** Service: Security test. */</span> + .<span style="color: #000000">type</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_GATT_SVC_TYPE_PRIMARY</span>, + .<span style="color: #000000">uuid</span> <span style="color: #000000">=</span> <span style="color: #000000">&gatt_svr_svc_sec_test_uuid</span>.<span style="color: #000000">u</span>, + .<span style="color: #000000">characteristics</span> <span style="color: #000000">=</span> (<span style="color: #A90D91">struct</span> <span style="color: #000000">ble_gatt_chr_def</span>[]) { { + <span style="color: #177500">/*** Characteristic: Random number generator. */</span> + .<span style="color: #000000">uuid</span> <span style="color: #000000">=</span> <span style="color: #000000">&gatt_svr_chr_sec_test_rand_uuid</span>.<span style="color: #000000">u</span>, + .<span style="color: #000000">access_cb</span> <span style="color: #000000">=</span> <span style="color: #000000">gatt_svr_chr_access_sec_test</span>, + .<span style="color: #000000">flags</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_GATT_CHR_F_READ</span> <span style="color: #000000">|</span> <span style="color: #000000">BLE_GATT_CHR_F_READ_ENC</span>, + }, { + <span style="color: #177500">/*** Characteristic: Static value. */</span> + .<span style="color: #000000">uuid</span> <span style="color: #000000">=</span> <span style="color: #000000">&gatt_svr_chr_sec_test_static_uuid</span>.<span style="color: #000000">u</span>, + .<span style="color: #000000">access_cb</span> <span style="color: #000000">=</span> <span style="color: #000000">gatt_svr_chr_access_sec_test</span>, + .<span style="color: #000000">flags</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_GATT_CHR_F_READ</span> <span style="color: #000000">|</span> + <span style="color: #000000">BLE_GATT_CHR_F_WRITE</span> <span style="color: #000000">|</span> <span style="color: #000000">BLE_GATT_CHR_F_WRITE_ENC</span>, + }, { + <span style="color: #1C01CE">0</span>, <span style="color: #177500">/* No more characteristics in this service. */</span> + } }, + }, +<span style="background-color: #ffffcc"> { +</span><span style="background-color: #ffffcc"> <span style="color: #177500">/*** ADC Level Notification Service. */</span> +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">type</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_GATT_SVC_TYPE_PRIMARY</span>, +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">uuid</span> <span style="color: #000000">=</span> <span style="color: #000000">&gatt_svr_svc_adc_uuid</span>.<span style="color: #000000">u</span>, +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">characteristics</span> <span style="color: #000000">=</span> (<span style="color: #A90D91">struct</span> <span style="color: #000000">ble_gatt_chr_def</span>[]) { { +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">uuid</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_UUID16_DECLARE</span>(<span style="color: #000000">ADC_SNS_TYPE</span>), +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">access_cb</span> <span style="color: #000000">=</span> <span style="color: #000000">gatt_svr_sns_access</span>, +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">flags</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_GATT_CHR_F_READ</span>, +</span><span style="background-color: #ffffcc"> }, { +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">uuid</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_UUID16_DECLARE</span>(<span style="color: #000000">ADC_SNS_VAL</span>), +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">access_cb</span> <span style="color: #000000">=</span> <span style="color: #000000">gatt_svr_sns_access</span>, +</span><span style="background-color: #ffffcc"> .<span style="color: #000000">flags</span> <span style="color: #000000">=</span> <span style="color: #000000">BLE_GATT_CHR_F_NOTIFY</span>, +</span><span style="background-color: #ffffcc"> }, { +</span><span style="background-color: #ffffcc"> <span style="color: #1C01CE">0</span>, <span style="color: #177500">/* No more characteristics in this service. */</span> +</span><span style="background-color: #ffffcc"> } }, +</span><span style="background-color: #ffffcc"> }, +</span><span style="background-color: #ffffcc"> +</span> { + <span style="color: #1C01CE">0</span>, <span style="color: #177500">/* No more services. */</span> + }, +}; +</pre></div> + + +<p>You should recognize the first services from the <a href="../bleprph/bleprph-intro/">BLE Peripheral</a> +tutorial earlier. We're just adding another Service, with 2 new Characteristics, to +that application.</p> +<p>We'll need to fill in the function that will be called for this service, <code>gatt_srv_sns_access</code> +next so that the service knows what to do.</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%"><span style="color: #A90D91">static</span> <span style="color: #A90D91">int</span> +<span style="color: #000000">gatt_svr_sns_access</span>(<span style="color: #A90D91">uint16_t</span> <span style="color: #000000">conn_handle</span>, <span style="color: #A90D91">uint16_t</span> <span style="color: #000000">attr_handle</span>, + <span style="color: #A90D91">struct</span> <span style="color: #000000">ble_gatt_access_ctxt</span> <span style="color: #000000">*ctxt</span>, + <span style="color: #A90D91">void</span> <span style="color: #000000">*arg</span>) +{ + <span style="color: #A90D91">uint16_t</span> <span style="color: #000000">uuid16</span>; + <span style="color: #A90D91">int</span> <span style="color: #000000">rc</span>; + + <span style="color: #000000">uuid16</span> <span style="color: #000000">=</span> <span style="color: #000000">ble_uuid_u16</span>(<span style="color: #000000">ctxt->chr->uuid</span>); + + <span style="color: #A90D91">switch</span> (<span style="color: #000000">uuid16</span>) { + <span style="color: #A90D91">case</span> <span style="color: #000000">ADC_SNS_TYPE</span>: + <span style="color: #000000">assert</span>(<span style="color: #000000">ctxt->op</span> <span style="color: #000000">==</span> <span style="color: #000000">BLE_GATT_ACCESS_OP_READ_CHR</span>); + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_mbuf_append</span>(<span style="color: #000000">ctxt->om</span>, <span style="color: #000000">ADC_SNS_STRING</span>, <span style="color: #A90D91">sizeof</span> <span style="color: #000000">ADC_SNS_STRING</span>); + <span style="color: #000000">BLEPRPH_LOG</span>(<span style="color: #000000">INFO</span>, <span style="color: #C41A16">"ADC SENSOR TYPE READ: %s\n"</span>, <span style="color: #000000">ADC_SNS_STRING</span>); + <span style="color: #A90D91">return</span> <span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span> <span style="color: #000000">?</span> <span style="color: #1C01CE">0</span> <span style="color: #000000">:</span> <span style="color: #000000">BLE_ATT_ERR_INSUFFICIENT_RES</span>; + + <span style="color: #A90D91">case</span> <span style="color: #000000">ADC_SNS_VAL</span>: + <span style="color: #A90D91">if</span> (<span style="color: #000000">ctxt->op</span> <span style="color: #000000">==</span> <span style="color: #000000">BLE_GATT_ACCESS_OP_WRITE_CHR</span>) { + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">gatt_svr_chr_write</span>(<span style="color: #000000">ctxt->om</span>, <span style="color: #1C01CE">0</span>, + <span style="color: #A90D91">sizeof</span> <span style="color: #000000">gatt_adc_val</span>, + <span style="color: #000000">&gatt_adc_val</span>, + <span style="color: #A90D91">NULL</span>); + <span style="color: #A90D91">return</span> <span style="color: #000000">rc</span>; + } <span style="color: #A90D91">else</span> <span style="color: #A90D91">if</span> (<span style="color: #000000">ctxt->op</span> <span style="color: #000000">==</span> <span style="color: #000000">BLE_GATT_ACCESS_OP_READ_CHR</span>) { + <span style="color: #000000">rc</span> <span style="color: #000000">=</span> <span style="color: #000000">os_mbuf_append</span>(<span style="color: #000000">ctxt->om</span>, <span style="color: #000000">&gatt_adc_val</span>, + <span style="color: #A90D91">sizeof</span> <span style="color: #000000">gatt_adc_val</span>); + <span style="color: #A90D91">return</span> <span style="color: #000000">rc</span> <span style="color: #000000">==</span> <span style="color: #1C01CE">0</span> <span style="color: #000000">?</span> <span style="color: #1C01CE">0</span> <span style="color: #000000">:</span> <span style="color: #000000">BLE_ATT_ERR_INSUFFICIENT_RES</span>; + } + + <span style="color: #A90D91">default</span><span style="color: #000000">:</span> + <span style="color: #000000">assert</span>(<span style="color: #1C01CE">0</span>); + <span style="color: #A90D91">return</span> <span style="color: #000000">BLE_ATT_ERR_UNLIKELY</span>; + } +} +</pre></div> + + +<p>You can see that when request is for the <code>ADC_SNS_TYPE</code>, we return the +Sensor Type we defined earlier. If the request if for <code>ADC_SNS_VAL</code> we'll return the +<code>gatt_adc_val</code> value. </p> +<p>Don't forget to include the <code>bleadc.h</code> include file at the top of the <code>gatt_svr.c</code> file!</p> +<div class="codehilite" style="background: #ffffff"><pre style="line-height: 125%">#include <assert.h> +#include <stdio.h> +#include <string.h> +#include "bsp/bsp.h" +#include "host/ble_hs.h" +#include "host/ble_uuid.h" +#include "bleprph.h" +<span style="background-color: #ffffcc">#include "bleadc.h" +</span></pre></div> + + +<p>If you build, load and run this application now, you will see all those Services and Characteristics +advertised, and you will even be able to read the "Sensor Type" String via the ADC_SNS_TYPE +Characteristic.</p> +<p><br></p> +<h3 id="adding-the-etape-water-sensor">Adding the eTape Water Sensor</h3> +<p>Now that we have a fully functioning BLE App that we can subscribe to sensor +values from, it's time to actually wire up the sensor!</p> +<p>As previously mentioned, we're going to be using an eTape Water Level Sensor. You can +get one from <a href="https://www.adafruit.com/products/1786";>Adafruit</a>. </p> +<p>We're going to use the sensor as a resistive sensor, and the setup is very simple. +I'll be using a 'breadboard` to put this all together for illustrative purposes. +First, attach a jumper-wire from Vdd on the board to the breadboard. +Next, attach a jumper wire from pin P0.03 on the board to the breadboard. This will be +our ADC-in. The sensor should have come with a 560 ohm resistor, so plug that +into the board between Vdd and ADC-in holes. Finally, attach a jumper from +GND on the board to your breadboard. At this point, your breadboard should look +like this:</p> +<p><img alt="Bread Board Setup" src="../pics/breadboard.png" /></p> +<p>Now attach one of the middle 2 leads from the sensor to ground on the breadboard and +the other middle lead to the ADC-in on the breadboard. Your breadboard should now look +like this:</p> +<p><img alt="Bread Board Final" src="../pics/adc-demo-1.png" /></p> +<p>And your eTape Sensor should look like this (at least if you have it mounted in a +graduated cylinder as I do).</p> +<p><img alt="eTape Sensor Setup" src="../pics/adc-demo-2.png" /></p> +<p>That concludes the hardware portion. Easy!</p> +<p>At this point you should be able to build, create-image and load your application and see it properly +sending readings. </p> +<p><br></p> +<h3 id="conclusion">Conclusion</h3> +<p>Congratulations, you've now completed both a hardware project and a software project by connecting a +sensor to your device and using Mynewt to read data from that sensor and send it via Bluetooth +to a connected device. That's no small feat!</p> +<p>If you see anything missing or want to send us feedback, please do so by signing up for +appropriate mailing lists on our <a href="../../../community/">Community Page</a>.</p> +<p>Keep on hacking and sensing!</p> +<p><br></p> +<h3 id="note">Note</h3> +<p>If you're wondering how to actually view these sensor readings via Bluetooth, you have a couple of +options. On Mac OS or iOS you can download the <a href="https://itunes.apple.com/us/app/lightblue-explorer-bluetooth/id557428110?mt=8";>LightBlue app</a>. +This app lets you connect to, and interrogate, BLE devices like the one you just built. </p> +<p>If you used the BLE Service and Characteristic UUIDs used in this tutorial, you can also download +and use a Mac OS <a href="https://dragonflyiot.com/MyNewtSensorReader.zip";>MyNewt Sensor Reader App</a> (Zip Archive) that allows +you to graph your data, etc. An iOS version is in Beta testing and should be available soon.</p> +<p><img alt="My Newt Sensor Reader" src="../pics/MyNewtSensorReader006.jpg" /></p> +<p>Enjoy!</p> + + <div class="row"> + + + + +<ul class="nav nav-pills" style="margin-bottom: 10px"> + <li> + + <a href=../air_quality_ble/> + <span class="fa fa-arrow-left"></span> + Previous: BLE-enabled Air Quality Sensor + </a> + + </li> + <li class="pull-right"> + + <a href=../../os_user_guide/> + Next: OS User Guide + <span class="fa fa-arrow-right"></span> + </a> + + </li> +</ul> + </div> + <footer class="row"> + <div class="col-xs-12"> + + <p class="copyright">Apache Mynewt (incubating) is available under Apache License, version 2.0.</p> + + </div> + <div class="col-xs-12"> + <div class="logos"> + <img src="/img/asf_logo_wide_small.png" alt="Apache" title="Apache"> + <small class="footnote"> + MyNewt is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF. + </small> + <img src="/img/egg-logo2.png" alt="Apache Incubator" title="Apache Incubator"> + </div> + </div> +</footer> + </div> + </div> + + + </div> + + <script src="../../../js/jquery-1.10.2.min.js"></script> + <script src="../../../js/bootstrap-3.0.3.min.js"></script> + <script src="../../../js/highlight.pack.js"></script> + <script src="../../../js/base.js"></script> + <script src="../../../js/custom.js"></script> + + </body> +</html> \ No newline at end of file
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/olimex/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/olimex/index.html b/develop/os/tutorials/olimex/index.html index 3ed37f4..b808aac 100644 --- a/develop/os/tutorials/olimex/index.html +++ b/develop/os/tutorials/olimex/index.html @@ -341,19 +341,6 @@ - - - <li><a href=" - ../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../event_queue/">Add task to manage multiple events</a> </li> @@ -432,6 +419,27 @@ + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/pics/MyNewtSensorReader006.jpg ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/pics/MyNewtSensorReader006.jpg b/develop/os/tutorials/pics/MyNewtSensorReader006.jpg new file mode 100644 index 0000000..c15d69d Binary files /dev/null and b/develop/os/tutorials/pics/MyNewtSensorReader006.jpg differ http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/pics/adc-demo-1.png ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/pics/adc-demo-1.png b/develop/os/tutorials/pics/adc-demo-1.png new file mode 100644 index 0000000..6e5de58 Binary files /dev/null and b/develop/os/tutorials/pics/adc-demo-1.png differ http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/pics/adc-demo-2.png ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/pics/adc-demo-2.png b/develop/os/tutorials/pics/adc-demo-2.png new file mode 100644 index 0000000..be2cce7 Binary files /dev/null and b/develop/os/tutorials/pics/adc-demo-2.png differ http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/pics/breadboard.png ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/pics/breadboard.png b/develop/os/tutorials/pics/breadboard.png new file mode 100644 index 0000000..39a2b9d Binary files /dev/null and b/develop/os/tutorials/pics/breadboard.png differ http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/pin-wheel-mods/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/pin-wheel-mods/index.html b/develop/os/tutorials/pin-wheel-mods/index.html index 20501d4..5e5a581 100644 --- a/develop/os/tutorials/pin-wheel-mods/index.html +++ b/develop/os/tutorials/pin-wheel-mods/index.html @@ -355,19 +355,6 @@ - - - <li><a href=" - ../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../event_queue/">Add task to manage multiple events</a> </li> @@ -446,6 +433,27 @@ + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/project-slinky/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/project-slinky/index.html b/develop/os/tutorials/project-slinky/index.html index 0ba2375..349d998 100644 --- a/develop/os/tutorials/project-slinky/index.html +++ b/develop/os/tutorials/project-slinky/index.html @@ -278,19 +278,6 @@ - - - <li><a href=" - ../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../event_queue/">Add task to manage multiple events</a> </li> @@ -389,6 +376,27 @@ + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/project-target-slinky/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/project-target-slinky/index.html b/develop/os/tutorials/project-target-slinky/index.html index 5449457..c9b1c99 100644 --- a/develop/os/tutorials/project-target-slinky/index.html +++ b/develop/os/tutorials/project-target-slinky/index.html @@ -278,19 +278,6 @@ - - - <li><a href=" - ../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../event_queue/">Add task to manage multiple events</a> </li> @@ -389,6 +376,27 @@ + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/repo/add_repos/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/repo/add_repos/index.html b/develop/os/tutorials/repo/add_repos/index.html index 93a5887..2bc41d6 100644 --- a/develop/os/tutorials/repo/add_repos/index.html +++ b/develop/os/tutorials/repo/add_repos/index.html @@ -308,19 +308,6 @@ - - - <li><a href=" - ../../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../../event_queue/">Add task to manage multiple events</a> </li> @@ -399,6 +386,27 @@ + + + + + <li><a href=" + ../../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/repo/create_repo/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/repo/create_repo/index.html b/develop/os/tutorials/repo/create_repo/index.html index b5f2abb..60fc0dc 100644 --- a/develop/os/tutorials/repo/create_repo/index.html +++ b/develop/os/tutorials/repo/create_repo/index.html @@ -308,19 +308,6 @@ - - - <li><a href=" - ../../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../../event_queue/">Add task to manage multiple events</a> </li> @@ -399,6 +386,27 @@ + + + + + <li><a href=" + ../../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/repo/private_repo/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/repo/private_repo/index.html b/develop/os/tutorials/repo/private_repo/index.html index 9ad0df0..637762c 100644 --- a/develop/os/tutorials/repo/private_repo/index.html +++ b/develop/os/tutorials/repo/private_repo/index.html @@ -308,19 +308,6 @@ - - - <li><a href=" - ../../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../../event_queue/">Add task to manage multiple events</a> </li> @@ -399,6 +386,27 @@ + + + + + <li><a href=" + ../../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/repo/upgrade_repo/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/repo/upgrade_repo/index.html b/develop/os/tutorials/repo/upgrade_repo/index.html index ea177d9..e57f1e4 100644 --- a/develop/os/tutorials/repo/upgrade_repo/index.html +++ b/develop/os/tutorials/repo/upgrade_repo/index.html @@ -308,19 +308,6 @@ - - - <li><a href=" - ../../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../../event_queue/">Add task to manage multiple events</a> </li> @@ -399,6 +386,27 @@ + + + + + <li><a href=" + ../../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/tasks_lesson/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/tasks_lesson/index.html b/develop/os/tutorials/tasks_lesson/index.html index f11eae2..df7064c 100644 --- a/develop/os/tutorials/tasks_lesson/index.html +++ b/develop/os/tutorials/tasks_lesson/index.html @@ -278,19 +278,6 @@ - - - <li><a href=" - ../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../event_queue/">Add task to manage multiple events</a> </li> @@ -369,6 +356,27 @@ + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li> http://git-wip-us.apache.org/repos/asf/incubator-mynewt-site/blob/a4d946d9/develop/os/tutorials/tutorials/index.html ---------------------------------------------------------------------- diff --git a/develop/os/tutorials/tutorials/index.html b/develop/os/tutorials/tutorials/index.html index 0820cf6..5336b0e 100644 --- a/develop/os/tutorials/tutorials/index.html +++ b/develop/os/tutorials/tutorials/index.html @@ -278,19 +278,6 @@ - - - <li><a href=" - ../air_quality_sensor/ -">Air-quality Sensor project</a> - - - </li> - - - - - <li > <a href="../event_queue/">Add task to manage multiple events</a> </li> @@ -369,6 +356,27 @@ + + + + + <li><a href=" + ../air_quality_sensor/ +">Air-quality Sensor project</a> + + + </li> + + + + + + <li > + <a href="../nrf52_adc/">Add an Analog Sensor</a> + </li> + + + </ul> </li>
