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i2c transfer timed out
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<blockquote data-quote="f18m" data-source="post: 506" data-attributes="member: 171"><p>Hi all,</p><p>I'm using this HAT: <a href="https://sequentmicrosystems.com/products/16-universal-inputs-card-for-raspberry-pi" target="_blank">https://sequentmicrosystems.com/products/16-universal-inputs-card-for-raspberry-pi</a> </p><p>reading the input very frequently (1Hz, forever) and my application works fine for several hours.</p><p>However, in a random way apparently, I get in my Python application the following exception:</p><p></p><p></p><p>and in the journalctl I can see:</p><p></p><p></p><p></p><p>When this happens... the Raspberry is totally unable to even restore I2C communications with the HAT.</p><p>Any attempt to read data through I2C results in the same error in journalctl:</p><p></p><p></p><p></p><p>Even a reboot of the Raspberry PI does not work :-(</p><p>I'm really lost on how to fix this.</p><p>Last time it happened I think I did a complete power cycle (unplugged the power adapter and plugged it back).</p><p></p><p>A few more notes:</p><p>* I didn't connect anything to GPIO lines related to SDA and SCL, beyond the SequentMicrossytem HAT</p><p>* I'm using a Raspberry Model B+ from 2014</p><p>* I'm using Raspbian 12 (bookworm), with kernel</p></blockquote><p></p>
[QUOTE="f18m, post: 506, member: 171"] Hi all, I'm using this HAT: [URL]https://sequentmicrosystems.com/products/16-universal-inputs-card-for-raspberry-pi[/URL] reading the input very frequently (1Hz, forever) and my application works fine for several hours. However, in a random way apparently, I get in my Python application the following exception: and in the journalctl I can see: When this happens... the Raspberry is totally unable to even restore I2C communications with the HAT. Any attempt to read data through I2C results in the same error in journalctl: Even a reboot of the Raspberry PI does not work :-( I'm really lost on how to fix this. Last time it happened I think I did a complete power cycle (unplugged the power adapter and plugged it back). A few more notes: * I didn't connect anything to GPIO lines related to SDA and SCL, beyond the SequentMicrossytem HAT * I'm using a Raspberry Model B+ from 2014 * I'm using Raspbian 12 (bookworm), with kernel [/QUOTE]
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