Trying to get Kconfig to work

There's something wrong with the importing part I think

components/dht22/dht22.c

@@ -0,0 +1,15 @@
+#include "dht22.h"
+
+#define DATA_GPIO CONFIG_DHT22_DATA_GPIO
+
+#if DATA_GPIO == -1
+#error "Please define your DHT22 GPIO Data Pin"
+#endif /* CONFIG_DHT22_DATA_GPIO == -1 */
+
+dht22_error dht_read() {
+  return DHT_OK;
+}
+
+int dht_temperature() {
+  return DATA_GPIO;
+}