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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>NRF SD MTU Data Overflow Handling</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/45169/nrf-sd-mtu-data-overflow-handling</link><description>Hi, 
 I have a working system based on NRF52832, SD132 and SDK 15.0. I am working with with the default MTU as my data requirement is low and everything is working great. 
 I recently noticed that if however I send data of size more than 20 bytes from</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 27 Mar 2019 13:36:49 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/45169/nrf-sd-mtu-data-overflow-handling" /><item><title>RE: NRF SD MTU Data Overflow Handling</title><link>https://devzone.nordicsemi.com/thread/178689?ContentTypeID=1</link><pubDate>Wed, 27 Mar 2019 13:36:49 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:67a50a65-8eaa-421e-82df-65d9b88d1a02</guid><dc:creator>Sigurd</dc:creator><description>[quote userid="4420" url="~/f/nordic-q-a/45169/nrf-sd-mtu-data-overflow-handling/177868"]Where do you see this mentioned error ? In the logs?[/quote]
&lt;p&gt;Yes. In nRF Connect mobile app, you can slide from left to right to view the log.&lt;/p&gt;
&lt;p&gt;I&amp;#39;m also getting the error &amp;quot;GATT INVALID ATTR LEN&amp;quot; on the phone when I try to write e.g. 5 bytes to a 4 bytes&amp;nbsp;characteristic.&lt;/p&gt;
[quote userid="4420" url="~/f/nordic-q-a/45169/nrf-sd-mtu-data-overflow-handling/177868"]So assuming I see this error in the logs, am I correct in assuming that in such situations the initiator (android system here) itself will throw an error and that on the device side there will be no activity whatsoever. In other words, I don&amp;#39;t need to worry about any such situation arising as the os itself (android / iphone etc) will do the needful ?[/quote]
&lt;p&gt;Correct.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF SD MTU Data Overflow Handling</title><link>https://devzone.nordicsemi.com/thread/177868?ContentTypeID=1</link><pubDate>Fri, 22 Mar 2019 14:36:08 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:9eba254a-7026-413f-8d66-92df2893ad91</guid><dc:creator>Ankit Bhatnagar</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;I am using the android phone app. The version is 4.22.3.&lt;/p&gt;
&lt;p&gt;Where do you see this mentioned error ? In the logs?&lt;/p&gt;
&lt;p&gt;So assuming I see this error in the logs, am I correct in assuming that in such situations the initiator (android system here) itself will throw an error and that on the device side there will be no activity whatsoever. In other words, I don&amp;#39;t need to worry about any such situation arising as the os itself (android / iphone etc) will do the needful ?&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Thanks !&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: NRF SD MTU Data Overflow Handling</title><link>https://devzone.nordicsemi.com/thread/177860?ContentTypeID=1</link><pubDate>Fri, 22 Mar 2019 14:15:08 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:adf4e724-8bbd-4963-ba42-75ea6669aef3</guid><dc:creator>Sigurd</dc:creator><description>&lt;p&gt;Hi,&lt;/p&gt;
[quote userid="4420" url="~/f/nordic-q-a/45169/nrf-sd-mtu-data-overflow-handling"]nrf connect app[/quote]
&lt;p&gt;Is this the phone app or the desktop app?&lt;/p&gt;
&lt;p&gt;What version of nRF Connect are you using ?&lt;/p&gt;
&lt;p&gt;If this is the phone app, what phone are you using?&lt;/p&gt;
&lt;p&gt;When I test this on the phone app, I get &amp;quot;Error 128 (0x80): GATT NO RESOURCES&amp;quot; when I try to send more than 20 bytes with the default ATT MTU.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>