lupyuen/lupyuen.org
1
0
Fork 0
mirror of https://github.com/lupyuen/lupyuen.github.io.git synced 2025-01-13 10:18:33 +08:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Commit from GitHub Actions

Browse source
This commit is contained in:
Lee Lup Yuen 2022-01-03 05:02:05 +00:00
parent 4e1664d643
commit c58e37f719
2 changed files with 15 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
articles/lorawan3.html
View file

@ -106,10 +106,10 @@
<p>Today we shall run <strong>LoRaWAN</strong> on NuttX OS!</p>
<p><em>Why would we need LoRaWAN?</em></p>
<p>LoRa will work perfectly fine for unsecured <strong>Point-to-Point Wireless Communication</strong> between simple devices.</p>
<p>But if we’re building <strong>IoT Sensor Devices</strong> that will <strong>transmit data packets</strong> securely to a Local Area Network or to the internet, we need <strong>LoRaWAN</strong>.</p>
<p>But if we’re building an <strong>IoT Sensor Device</strong> that will <strong>transmit data packets</strong> securely to a Local Area Network or to the internet, we need <strong>LoRaWAN</strong>.</p>
<p><a href="https://makezine.com/2021/05/24/go-long-with-lora-radio/">(More about LoRaWAN)</a></p>
<p>We shall test LoRaWAN on NuttX with Bouffalo Lab’s <a href="https://lupyuen.github.io/articles/pinecone"><strong>BL602 and BL604 RISC-V SoCs</strong></a>.</p>
<p>(It will probably run on <strong>ESP32</strong>, since we’re calling standard NuttX Interfaces)</p>
<p>We shall test LoRaWAN on NuttX with <a href="https://lupyuen.github.io/articles/pinedio"><strong>PineDio Stack BL604 RISC-V Board</strong></a> (pic above) with its onboard Semtech SX1262 Transceiver.</p>
<p>(LoRaWAN on NuttX will probably run on <strong>ESP32</strong>, since we’re calling standard NuttX Interfaces)</p>
<p><img src="https://lupyuen.github.io/images/sx1262-library5.jpg" alt="Porting LoRaWAN to NuttX OS" /></p>
<h1 id="small-steps" class="section-header"><a href="#small-steps">1 Small Steps</a></h1>
<p>In the last article we created a <strong>LoRa Library for NuttX</strong> (top right) that works with <strong>Semtech SX1262 Transceiver</strong>…</p>
@ -239,6 +239,10 @@ git clone --recursive --branch lorawan https://github.com/lupyuen/incubator-nutt
<li>
<p><a href="https://github.com/lupyuen/lorawan_test"><strong>“Install LoRaWAN Test App”</strong></a></p>
</li>
<li>
<p>Disable the Assertion Check for <strong>GPIO Pin Type</strong>…</p>
<p><a href="https://lupyuen.github.io/articles/sx1262#appendix-gpio-pin-type-issue"><strong>“GPIO Pin Type Issue”</strong></a></p>
</li>
</ol>
<p>Let’s configure our LoRaWAN code.</p>
<p><img src="https://lupyuen.github.io/images/wisgate-app2.png" alt="Device EUI from ChirpStack" /></p>
@ -1041,17 +1045,17 @@ PrepareTxFrame: status=0, maxSize=11, currentSize=11</code></pre></div>
<p>Stay tuned for updates!</p>
<p><img src="https://lupyuen.github.io/images/spi2-pinedio1.jpg" alt="Inside PineDio Stack BL604" /></p>
<h1 id="whats-next" class="section-header"><a href="#whats-next">15 What’s Next</a></h1>
<p>We hope to build a <strong>complete IoT Sensor Device</strong> with NuttX.</p>
<p>We’re ready to build a <strong>complete IoT Sensor Device</strong> with NuttX!</p>
<p>Now that LoRaWAN is up, we’ll carry on in the next few articles…</p>
<ul>
<li>
<p>Implement <strong>CBOR on NuttX</strong> for compressing Sensor Data</p>
<p>Implement <a href="https://github.com/intel/tinycbor"><strong>CBOR on NuttX</strong></a> for compressing Sensor Data</p>
</li>
<li>
<p>Transmit the compressed Sensor Data to <strong>The Things Network</strong> over LoRaWAN</p>
<p>Transmit the compressed Sensor Data to <a href="https://lupyuen.github.io/articles/ttn"><strong>The Things Network</strong></a> over LoRaWAN</p>
</li>
<li>
<p>We’ll read the onboard <strong>Temperature Sensor</strong> on BL602 to get real Sensor Data</p>
<p>We’ll read BL602’s <a href="https://lupyuen.github.io/articles/tsen"><strong>Internal Temperature Sensor</strong></a> to get real Sensor Data</p>
</li>
</ul>
<p><em>We’re porting plenty of code to NuttX: LoRa, LoRaWAN and NimBLE Porting Layer. Do we expect any problems?</em></p>
@ -1118,7 +1122,9 @@ PrepareTxFrame: status=0, maxSize=11, currentSize=11</code></pre></div>
<p>It might! But first let’s get LoRaWAN and ST7789 Display running together on PineDio Stack.</p>
</li>
<li>
<p>TODO: Non Volatile Memory</p>
<p>Is there another solution for the <strong>Nonce Quirk?</strong></p>
<p>We could store the Last Used Nonce into <strong>Non-Volatile Memory</strong> to be sure that we don’t reuse the Nonce.</p>
<p><a href="https://github.com/lupyuen/LoRaMac-node-nuttx/blob/master/src/nuttx.c#L68-L97">(See this)</a></p>
</li>
</ol>
<h1 id="appendix-posix-timers-and-message-queues" class="section-header"><a href="#appendix-posix-timers-and-message-queues">17 Appendix: POSIX Timers and Message Queues</a></h1>

2
articles/sx1262.html
View file

@ -2925,7 +2925,7 @@ void SX126xSetSleep( SleepParams_t sleepConfig ) {
<span class="ident">up_assert</span>: <span class="ident">Assertion</span> <span class="ident">failed</span> <span class="ident">at</span> <span class="ident">file</span>:<span class="ident">ioexpander</span><span class="op">/</span><span class="ident">gpio</span>.<span class="ident">c</span> <span class="ident">line</span>: <span class="number">544</span> <span class="ident">task</span>: <span class="ident">gpio</span></code></pre></div>
<p>I’ll submit a NuttX Issue, meanwhile I have disabled the assertion…</p>
<ul>
<li><a href="https://github.com/lupyuen/incubator-nuttx/blob/lorawan/drivers/ioexpander/gpio.c#L544-L547">drivers/ioexpander/gpio.c</a></li>
<li><a href="https://github.com/lupyuen/incubator-nuttx/blob/lorawan/drivers/ioexpander/gpio.c#L544-L547">drivers/ioexpander/gpio.c (line 544)</a></li>
</ul>
<p><img src="https://lupyuen.github.io/images/lorawan3-int.png" alt="GPIO Pin Type Issue" /></p>
<h1 id="appendix-nimble-callout-issue" class="section-header"><a href="#appendix-nimble-callout-issue">16 Appendix: NimBLE Callout Issue</a></h1>