diff --git a/Libraries/aprs/afsk.h b/Libraries/aprs/afsk.h
new file mode 100644
--- /dev/null
+++ b/Libraries/aprs/afsk.h
@@ -0,0 +1,19 @@
+#ifndef AFSK_H
+#define AFSK_H
+
+#include "stm32f0xx_hal.h"
+
+
+void afsk_init(void);
+void afsk_send(const uint8_t *buffer, uint16_t len);
+void afsk_start(void);
+uint8_t afsk_busy(void);
+
+void afsk_ptt_on(void);
+void afsk_ptt_off(void);
+void afsk_output_sample(uint8_t s);
+uint8_t afsk_request_cwoff(void);
+void afsk_timer_stop(void);
+void afsk_timer_start(void);
+TIM_HandleTypeDef* afsk_timer_gethandle(void);
+#endif