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

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/11866#discussion_r324879451">cpu/cc3200/periph/gpio.c</a>:</p>
<pre style='color:#555'>> +static const uint8_t pin_to_gpio_num[64] = {
+    10,  11,  12,  13,  14,  15,  16,  17,  255, 255, 18,  19,  20,
+    21,  22,  23,  24,  40,  28,  29,  25,  255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+    255, 255, 255, 255, 255, 31,  255, 255, 255, 255, 0,   255, 32,
+    30,  255, 1,   255, 2,   3,   4,   5,   6,   7,   8,   9
+};
+
+/**
+ * @brief check if a port base is valid
+ *
+ * @param port
+ * @return true
+ * @return false
+ */
+bool _gpioPortBaseValid(uint32_t port)
</pre>
<p>Is this used anywhere?<br>
(if so it should probably be <code>static</code>)</p>

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