*/
uint8_t
-ao_spi_slave_recv(uint8_t *buf, uint8_t len);
+ao_spi_slave_recv(void *buf, uint16_t len);
void
-ao_spi_slave_send(uint8_t *buf, uint8_t len);
+ao_spi_slave_send(void *buf, uint16_t len);
void
ao_spi_slave_init(void);
void
ao_radio_send_lots(ao_radio_fill_func fill);
+/*
+ * ao_radio_pa
+ */
+
+#if AO_RADIO_HAS_PA
+void
+ao_radio_pa_on(void);
+
+void
+ao_radio_pa_off(void);
+
+void
+ao_radio_pa_init(void);
+#else
+#define ao_radio_pa_on()
+#define ao_radio_pa_off()
+#define ao_radio_pa_init()
+#endif
+
/*
* Compute the packet length as follows:
*