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---------
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-- ISB --
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---------
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procedure ISB is
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begin
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Asm ("isb", Volatile => True);
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end ISB;
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-----------------------
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-- Cache_Maintenance --
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-----------------------
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procedure Cache_Maintenance
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(Start : System.Address;
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Len : Natural)
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is
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begin
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if not D_Cache_Enabled then
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return;
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end if;
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declare
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function To_U32 is new Ada.Unchecked_Conversion
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(System.Address, UInt32);
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Op_Size : Integer_32 := Integer_32 (Len);
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Op_Addr : UInt32 := To_U32 (Start);
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Reg : UInt32 with Volatile, Address => Reg_Address;
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begin
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DSB;
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while Op_Size > 0 loop
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Reg := Op_Addr;
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Op_Addr := Op_Addr + Data_Cache_Line_Size;
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Op_Size := Op_Size - Integer_32 (Data_Cache_Line_Size);
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end loop;
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DSB;
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ISB;
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Function Definition: function To_Char is new Ada.Unchecked_Conversion (Source => UInt8,
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Function Body: Target => Character);
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function To_UInt8 is new Ada.Unchecked_Conversion (Source => Character,
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Target => UInt8);
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procedure Write (This : in out TP_Device; Cmd : String);
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procedure Read (This : in out TP_Device; Str : out String);
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-----------
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-- Write --
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-----------
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procedure Write (This : in out TP_Device; Cmd : String) is
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Status : UART_Status;
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Data : UART_Data_8b (Cmd'Range);
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begin
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for Index in Cmd'Range loop
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Data (Index) := To_UInt8 (Cmd (Index));
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end loop;
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This.Port.Transmit (Data, Status);
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if Status /= Ok then
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-- No error handling...
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raise Program_Error;
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end if;
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-- This.Time.Delay_Microseconds ((11 * 1000000 / 19_2000) + Cmd'Length);
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end Write;
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----------
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-- Read --
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----------
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procedure Read (This : in out TP_Device; Str : out String) is
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Status : UART_Status;
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Data : UART_Data_8b (Str'Range);
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begin
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This.Port.Receive (Data, Status);
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if Status /= Ok then
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-- No error handling...
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raise Program_Error;
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end if;
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for Index in Str'Range loop
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Str (Index) := To_Char (Data (Index));
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end loop;
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end Read;
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----------------------
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-- Set_Line_Spacing --
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----------------------
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procedure Set_Line_Spacing (This : in out TP_Device; Spacing : UInt8) is
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begin
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Write (This, ASCII.ESC & '3' & To_Char (Spacing));
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end Set_Line_Spacing;
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