diff --git a/inc/pid.h b/inc/pid.h
--- a/inc/pid.h
+++ b/inc/pid.h
@@ -10,7 +10,8 @@ typedef struct {
 	int32_t i_state;
 } pid_state_t;
 
-void pid_init(pid_state_t* state);
-int16_t pid_update(therm_settings_t* set, therm_status_t* status, pid_state_t* state);
+void pid_init(void);
+float pid_process(void);
+int16_t pid_update(void);
 
 #endif