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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>TWIM restart on address NACK (NRF9160)</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/96002/twim-restart-on-address-nack-nrf9160</link><description>Hello, 
 I trying to interface with a I2C device (specially, ST25DVxxK) that requires a specific I2C start sequence to ensure correct arbitration: 
 
 (from ST AN5624). 
 Is it possible to produce the repeated address sequence? If I understand correctly</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 25 Jan 2023 16:55:32 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/96002/twim-restart-on-address-nack-nrf9160" /><item><title>RE: TWIM restart on address NACK (NRF9160)</title><link>https://devzone.nordicsemi.com/thread/406529?ContentTypeID=1</link><pubDate>Wed, 25 Jan 2023 16:55:32 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:0081ad5d-9177-456c-b423-0cd5a2d2a208</guid><dc:creator>Susheel Nuguru</dc:creator><description>&lt;p&gt;I am not sure if you can stop the transaction midway once it is started.&amp;nbsp;&lt;/p&gt;
[quote user=""]If I understand correctly, I can publish ERROR event to a DPPI channel and subscribe STARTTX/STARTRX to that channel[/quote]
&lt;p&gt;This is not legal to do with TWIM as mentioned in the product specification&lt;br /&gt;&lt;br /&gt;&lt;pre class="ui-code" data-mode="text"&gt;After the TWI master is started, the STARTTX or STARTRX tasks should not be triggered again until the TWI master has issued a LASTRX, LASTTX, or STOPPED event.&lt;/pre&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>