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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/117456/support-request-for-forcing-the-nfc-peripheral-st25r3911b-in-low-power-mode-or-power-down</link><description>Dear Customer Support, 
 We use the nRF52840 as our main controller 
 For our NFC / tag detect requirement, we use the ST25R3911B over a SPI interface 
 It&amp;#39;s datasheet is available here 
 https://www.alldatasheet.com/datasheet-pdf/pdf/927251/STMICROELECTRONICS</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Fri, 14 Mar 2025 15:07:00 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/117456/support-request-for-forcing-the-nfc-peripheral-st25r3911b-in-low-power-mode-or-power-down" /><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/527412?ContentTypeID=1</link><pubDate>Fri, 14 Mar 2025 15:07:00 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:625cc4af-4bff-4028-a732-2d6cded4e47f</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Thank you,&amp;nbsp;&lt;span&gt;Jamal. That is much appreciated.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;PS: I see that you have not signed the Contribuer Licence Agreement yet, which you can doo by clicking on the note about it in your pull request. This is requiered.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1741964815495v2.png" alt=" " /&gt;&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/527265?ContentTypeID=1</link><pubDate>Thu, 13 Mar 2025 18:54:34 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:8b74b145-f4d8-4bad-adcf-c4a47073a654</guid><dc:creator>Jamal_nRF</dc:creator><description>&lt;p&gt;Hi Einar,&lt;/p&gt;
&lt;p&gt;Thanks for the confirmations.&lt;/p&gt;
&lt;p&gt;I was able to create a new PR following those provided guidelines. Here is a link to it&lt;/p&gt;
&lt;p&gt;&lt;a id="" href="https://github.com/nrfconnect/sdk-nrf/pull/20933"&gt;https://github.com/nrfconnect/sdk-nrf/pull/20933&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Jamal&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/526857?ContentTypeID=1</link><pubDate>Wed, 12 Mar 2025 08:41:35 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:ddf14361-46f0-4385-ba55-aaff1e8421f7</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Hi Jamal,&lt;/p&gt;
&lt;p&gt;I am sorry, I was too quick in my reply. You are right that this reside in the &lt;a href="https://github.com/nrfconnect/sdk-nrf"&gt;sdk-nrf&lt;/a&gt; repository. The method to contribute there is similar to of Zephyr though, see &lt;a href="https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/nrf/dev_model_and_contributions/contributions.html"&gt;Contribution guidelines in the nRF Connect SDK&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;Br,&lt;/p&gt;
&lt;p&gt;Einar&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/526420?ContentTypeID=1</link><pubDate>Fri, 07 Mar 2025 18:45:14 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:9db82e72-2895-4dc6-8c3f-fe40d81dafb0</guid><dc:creator>Jamal_nRF</dc:creator><description>&lt;p&gt;Hi Einar,&lt;/p&gt;
&lt;p&gt;Appreciate the feedback about issuing a PR&lt;/p&gt;
&lt;p&gt;Would it rather be in this repository?&lt;/p&gt;
&lt;p&gt;&lt;a id="" href="https://github.com/nrfconnect/sdk-nrf"&gt;https://github.com/nrfconnect/sdk-nrf&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;I am not able to find those drivers in your suggested repository. Did I miss it?&lt;/p&gt;
&lt;p&gt;Thank you for clarifying&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Jamal&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/526389?ContentTypeID=1</link><pubDate>Fri, 07 Mar 2025 15:14:56 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:8217d796-e859-4819-b6ce-df62885bfd0f</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Hi Jamal,&lt;/p&gt;
&lt;p&gt;I see, that is very welcome. You can create a pull request with&amp;nbsp;&lt;a href="https://github.com/zephyrproject-rtos/zephyr"&gt;https://github.com/zephyrproject-rtos/zephyr&lt;/a&gt;. The details are described under &lt;a href="https://docs.zephyrproject.org/latest/contribute/guidelines.html#pull-requests-and-issues"&gt;Pull Requests and Issues&lt;/a&gt;&amp;nbsp;in the Zephyr documentation. If you can link to it here as well for reference that will be much appreciated.&lt;/p&gt;
&lt;p&gt;Br,&lt;/p&gt;
&lt;p&gt;Einar&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/526226?ContentTypeID=1</link><pubDate>Thu, 06 Mar 2025 15:50:34 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:28ea6a58-354b-43dc-ab1f-d92493702ac0</guid><dc:creator>Jamal_nRF</dc:creator><description>&lt;p&gt;Hello Einar,&lt;/p&gt;
&lt;p&gt;We have integrated the st25r3911b peripheral for a customer&lt;/p&gt;
&lt;p&gt;and used the Nordic drivers from the Zephyr baseline&lt;/p&gt;
&lt;p&gt;In the process we have identified a bug and the associated fix for it&lt;/p&gt;
&lt;p&gt;Could you please advise on the process to promote our fix back into the Zephyr baseline?&lt;/p&gt;
&lt;p&gt;What would be the starting point?&lt;/p&gt;
&lt;p&gt;Thank you&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/524083?ContentTypeID=1</link><pubDate>Fri, 21 Feb 2025 13:01:43 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:ed669963-f66d-4aa8-8af1-4dc87f6da480</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Hi Jamal,&lt;/p&gt;
&lt;p&gt;The driver in Zephyr was written by Nordic employees a long time a go, as it has been used as a comanion for testign the nRF5 devices NFC tag feature (&lt;a href="https://devzone.nordicsemi.com/support-private/support/338000/nrf/samples/nfc/tag_reader"&gt;see nfc_reader&lt;/a&gt;).&lt;/p&gt;
&lt;p&gt;Einar&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/523957?ContentTypeID=1</link><pubDate>Thu, 20 Feb 2025 18:08:33 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:fbeb0f84-e63a-494d-934e-a7d2e886104c</guid><dc:creator>Jamal_nRF</dc:creator><description>&lt;p&gt;Hello Einar Thorsrud,&lt;/p&gt;
&lt;p&gt;Follow up question:&lt;/p&gt;
&lt;p&gt;could Nordic share the author(s) of the zephyr drivers st25r3911b available here&lt;/p&gt;
&lt;p&gt;&lt;a href="https://github.com/nrfconnect/sdk-nrf/tree/main/lib/st25r3911b"&gt;https://github.com/nrfconnect/sdk-nrf/tree/main/lib/st25r3911b&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Thank you,&lt;/p&gt;
&lt;p&gt;Jamal&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Support request for forcing the NFC peripheral st25r3911b in low power mode (or power down)</title><link>https://devzone.nordicsemi.com/thread/515945?ContentTypeID=1</link><pubDate>Fri, 20 Dec 2024 14:27:00 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:1aa7f937-1839-46d2-a62f-52bbeaf9e8dd</guid><dc:creator>Einar Thorsrud</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;The SDK has some support for&amp;nbsp;ST25R3911B (&lt;a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/libraries/others/st25r3911b_nfc.html"&gt;doc&lt;/a&gt;), but not power management. I see from the&amp;nbsp;ST25R3911B documentation that there is some low power features in the&amp;nbsp;ST25R3911B, but I recomend you refer to ST for details on that.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>