<p><b>@leandrolanzieri</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/10919#discussion_r254298310">drivers/ad7746/ad7746.c</a>:</p>
<pre style='color:#555'>> +    if (mode == AD7746_VT_MD_DIS) {
+        reg &= ~(1 << AD7746_VT_SETUP_VTEN_BIT);
+    }
+    else {
+        /* Enable voltage / temperature channel and set mode */
+        reg &= ~((1 << AD7746_VT_SETUP_VTMD0_BIT) |
+                 (1 << AD7746_VT_SETUP_VTMD1_BIT));
+        reg |= (1 << AD7746_VT_SETUP_VTEN_BIT) |
+               (mode << AD7746_VT_SETUP_VTMD0_BIT);
+    }
+
+    if (i2c_write_reg(I2C, ADDR, AD7746_REG_VT_SETUP, reg, 0)) {
+        DEBUG("[ad7746] set_vt_ch - error: unable to set v/t channel mode\n");
+        goto release;
+    }
+
</pre>
<p>oops, forgot to add the success return. Will add!</p>

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