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<p>Dear friends,</p>
<p><br>
</p>
<p>I now grabbed a V560 module that was working fine in another DAQ system and put it into our test system.</p>
<p><br>
</p>
<p>The main.cfg looks like this:</p>
<p><br>
</p>
<p></p>
<div style="color: #cccccc;background-color: #1f1f1f;font-family: Consolas, 'Courier New', monospace;font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;">
<div><span style="color: #569cd6;">log_level</span><span style="color: #cccccc;">=spam
</span><span style="color: #6a9955;"># info, verbose, debug, spam</span></div>
<br>
<div><span style="color: #cccccc;">CRATE(</span><span style="color: #ce9178;">"MCAL"</span><span style="color: #cccccc;">) {
</span></div>
<div><span style="color: #cccccc;"> GSI_VULOM(0x03000000) {</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #569cd6;">timestamp</span><span style="color: #cccccc;"> = true
</span><span style="color: #6a9955;"># needed to get timestamps in the data output</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #6a9955;"># ecl=0..15</span></div>
<div><span style="color: #cccccc;"> }</span></div>
<div><span style="color: #cccccc;"> BARRIER</span></div>
<div><span style="color: #cccccc;"> CAEN_V560(0x333333300) {</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #569cd6;">use_veto</span><span style="color: #cccccc;"> = true</span></div>
<div><span style="color: #cccccc;"> } </span></div>
<div><span style="color: #6a9955;"># CAEN_V767A(0x03100000) {</span></div>
<div><span style="color: #6a9955;"># }</span></div>
<div><span style="color: #cccccc;">}</span></div>
</div>
<br>
<p></p>
<p>Starting the DAQ now results in a freeze of the RIO4. A reset of the crate is necessary to talk to it again.</p>
<p><br>
</p>
<p>The problem occurs in the first slow init of the V560 module. To find the exact line, I added some output to CRATE.C:</p>
<p><br>
</p>
<p></p>
<div>10: crate/crate.c:923: .Slow-init module[0]=GSI_VULOM.<br>
before push_log_level(module)<br>
before a_crate->module_init_id = module->id<br>
before module->props->init_slow(a_crate, module)<br>
LOG: TRLO: MD5SUM: 0x1409285e (CT: 63bb1d44 = 2023-01-08 19:45:08 UTC)<br>
before module_init_id_mark(a_crate, module)<br>
before pop_log_level(module)<br>
10: crate/crate.c:923: .Slow-init module[1]=CAEN_V560.<br>
before push_log_level(module)<br>
before a_crate->module_init_id = module->id<br>
before module->props->init_slow(a_crate, module)</div>
<p></p>
<p><br>
</p>
<p>The CRATE.C code now looks like this:</p>
<p><br>
</p>
<p></p>
<div style="color: #cccccc;background-color: #1f1f1f;font-family: Consolas, 'Courier New', monospace;font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;">
<div><span style="color: #cccccc;"> </span><span style="color: #569cd6;">TAILQ_FOREACH</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">,
</span><span style="color: #d4d4d4;">&</span><span style="color: #9cdcfe;">a_crate</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">module_list</span><span style="color: #cccccc;">, next) {</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #c586c0;">if</span><span style="color: #cccccc;"> (</span><span style="color: #569cd6;">NULL</span><span style="color: #cccccc;">
</span><span style="color: #d4d4d4;">==</span><span style="color: #cccccc;"> </span>
<span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">props</span><span style="color: #cccccc;">) {</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #c586c0;">continue</span><span style="color: #cccccc;">;</span></div>
<div><span style="color: #cccccc;"> }</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #569cd6;">LOGF</span><span style="color: #cccccc;">(info)(</span><span style="color: #569cd6;">LOGL</span><span style="color: #cccccc;">,
</span><span style="color: #ce9178;">"Slow-init module[</span><span style="color: #9cdcfe;">%u</span><span style="color: #ce9178;">]=</span><span style="color: #9cdcfe;">%s</span><span style="color: #ce9178;">."</span><span style="color: #cccccc;">,
</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">id</span><span style="color: #cccccc;">,</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">keyword_get_string</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">type</span><span style="color: #cccccc;">));</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before push_log_level(module)
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">push_log_level</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before a_crate->module_init_id = module->id
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #9cdcfe;">a_crate</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">module_init_id</span><span style="color: #cccccc;">
</span><span style="color: #d4d4d4;">=</span><span style="color: #cccccc;"> </span>
<span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">id</span><span style="color: #cccccc;">;</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before module->props->init_slow(a_crate, module)
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #c586c0;">if</span><span style="color: #cccccc;"> (</span><span style="color: #d4d4d4;">!</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">props</span><span style="color: #cccccc;">-></span><span style="color: #9cdcfe;">init_slow</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">a_crate</span><span style="color: #cccccc;">,
</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">)) {</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before pop_log_level(module)
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">pop_log_level</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before goto crate_init_done
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #c586c0;">goto</span><span style="color: #cccccc;">
</span><span style="color: #c8c8c8;">crate_init_done</span><span style="color: #cccccc;">;</span></div>
<div><span style="color: #cccccc;"> }</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before module_init_id_mark(a_crate, module)
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">module_init_id_mark</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">a_crate</span><span style="color: #cccccc;">,
</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">printf</span><span style="color: #cccccc;">(</span><span style="color: #ce9178;">"before pop_log_level(module)
</span><span style="color: #d7ba7d;">\n</span><span style="color: #ce9178;">"</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> </span><span style="color: #dcdcaa;">pop_log_level</span><span style="color: #cccccc;">(</span><span style="color: #9cdcfe;">module</span><span style="color: #cccccc;">);</span></div>
<div><span style="color: #cccccc;"> }</span></div>
</div>
<br>
<p></p>
<p>Thus, to me it looks like the check "<span>if (!module->props->init_slow(a_crate, module)) ...</span>" is doing something quite horrible to the RIO4.</p>
<p><br>
</p>
<p>This is unfortunate, because my original aim was to show that there is also a bug/mistake in readout_dt of the V560 module. But I did not come this far.</p>
<p><br>
</p>
<p>Do you have any idea what might cause the freezing of the RIO4?</p>
<p><br>
</p>
<p><br>
</p>
<p><br>
</p>
<p>Best greetings and many thanks</p>
<p>Günter<br>
</p>
<p><br>
</p>
<p><br>
</p>
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