void pwmled_set_mode(unsigned char n, unsigned char mode);
unsigned char pwmled_is_on(unsigned char n);
+/* gpio.c */
+#define GPIO_LED1 0
+#define GPIO_LED2 1
+
+void gpio_init();
+void gpio_set(unsigned char n, unsigned char on);
+
+/* ambient.c */
+void ambient_init();
+extern unsigned char ambient_zone;
+void ambient_adc(uint16_t adc_val);
#endif /* !LIGHTS_H__ */