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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/10290#discussion_r256819523">tests/driver_motor_driver/main.c</a>:</p>
<pre style='color:#555'>> +        motors_control(dir * pwm_res / 5);
+        xtimer_periodic_wakeup(&last_wakeup, INTERVAL);
+
+        /* Reverse direction */
+        dir = dir * -1;
+    }
+
+    return NULL;
+}
+#endif /* MOTOR_DRIVER_NUMOF */
+
+int main(void)
+{
+    xtimer_init();
+
+#ifdef MOTOR_DRIVER_NUMOF
</pre>
<p>done</p>

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