<p><b>@vincent-d</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/10526#discussion_r247172389">drivers/adcxx1c/adcxx1c.c</a>:</p>
<pre style='color:#555'>>  
     hysteresis <<= (12 - dev->params.bits);
     buf[0] = hysteresis >> 8;
     buf[1] = hysteresis & 0xFF;
-    i2c_write_regs(I2C, ADDR, ADCXX1C_HYSTERESIS_ADDR, buf, 2, 0);
+    status = i2c_write_regs(I2C, ADDR, ADCXX1C_HYSTERESIS_ADDR, buf, 2, 0);
+    if (status < 0) {
+        i2c_release(I2C);
+        LOG_DEBUG("[adcxx1c] set_alert (hysteresis) - error: unable to communicate "
</pre>
<p>Fixed</p>

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