------------------------------------------------------------------------------
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--                      Copyright (C) 2017, AdaCore                         --
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------------------------------------------------------------------------------

with STM32.Device;  use STM32.Device;

with Poll_For_Continuous_State;

package body Discrete_Inputs is

   ---------------------
   -- Poll_For_Active --
   ---------------------

   procedure Poll_For_Active is new Poll_For_Continuous_State
     (Input           => Discrete_Input,
      In_Target_State => Active_Indicated)
     with Inline;

   ------------------
   -- Await_Active --
   ------------------

   procedure Await_Active
     (This          : Discrete_Input;
      Debounce_Time : Time_Span := Default_Debounce_Time)
   renames Poll_For_Active;

   -----------------------
   -- Poll_For_Inactive --
   -----------------------

   procedure Poll_For_Inactive is new Poll_For_Continuous_State
     (Input           => Discrete_Input,
      In_Target_State => Inactive_Indicated)
     with Inline;

   --------------------
   -- Await_Inactive --
   --------------------

   procedure Await_Inactive
     (This          : Discrete_Input;
      Debounce_Time : Time_Span := Default_Debounce_Time)
   renames Poll_For_Inactive;

   -------------------------
   -- Initialize_Hardware --
   -------------------------

   procedure Initialize_Hardware (This : in out Discrete_Input) is
      Config : GPIO_Port_Configuration;
   begin
      Enable_Clock (This.Pin.all);

      Config := (Mode_In, Resistors => (if This.Active = High then Pull_Down else Pull_Up));
      This.Pin.Configure_IO (Config);
   end Initialize_Hardware;

end Discrete_Inputs;
