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This.TX_DMA_Int.Wait_For_Completion (DMA_Err); -- this unblocks
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This.SD_Int.Wait_Transfer (Ret); -- TX underrun!
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-- this seems slow. Do we have to wait?
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loop
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-- FIXME: some people claim, that this goes wrong with multiblock, see
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-- http://blog.frankvh.com/2011/09/04/stm32f2xx-sdio-sd-card-interface/
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exit when not Get_Flag (This, TX_Active);
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end loop;
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if Last_Operation (This) =
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Write_Multiple_Blocks_Operation
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then
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Ret := Stop_Transfer (This);
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end if;
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Clear_All_Status (This.TX_DMA_Int.Controller.all, This.TX_DMA_Int.Stream);
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Disable (This.TX_DMA_Int.Controller.all, This.TX_DMA_Int.Stream);
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declare
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Data_Incomplete : constant Boolean :=
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This.TX_DMA_Int.Buffer_Error and then
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Items_Transferred (This.TX_DMA_Int.Controller.all, This.TX_DMA_Int.Stream)
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/= Data'Length / 4;
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begin
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return Ret = OK
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and then DMA_Err = DMA_No_Error
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and then not Data_Incomplete;
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Function Definition: function To_Word is new Ada.Unchecked_Conversion (System.Address, UInt32);
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Function Body: function Offset (Buffer : DMA2D_Buffer;
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X, Y : Integer) return UInt32 with Inline_Always;
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DMA2D_Init_Transfer_Int : DMA2D_Sync_Procedure := null;
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DMA2D_Wait_Transfer_Int : DMA2D_Sync_Procedure := null;
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------------------
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-- DMA2D_DeInit --
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------------------
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procedure DMA2D_DeInit is
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begin
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RCC_Periph.AHB1ENR.DMA2DEN := False;
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DMA2D_Init_Transfer_Int := null;
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DMA2D_Wait_Transfer_Int := null;
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end DMA2D_DeInit;
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----------------
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-- DMA2D_Init --
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----------------
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procedure DMA2D_Init
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(Init : DMA2D_Sync_Procedure;
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Wait : DMA2D_Sync_Procedure)
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is
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begin
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if DMA2D_Init_Transfer_Int = Init then
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return;
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end if;
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DMA2D_DeInit;
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DMA2D_Init_Transfer_Int := Init;
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DMA2D_Wait_Transfer_Int := Wait;
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RCC_Periph.AHB1ENR.DMA2DEN := True;
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RCC_Periph.AHB1RSTR.DMA2DRST := True;
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RCC_Periph.AHB1RSTR.DMA2DRST := False;
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end DMA2D_Init;
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------------
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-- Offset --
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------------
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function Offset (Buffer : DMA2D_Buffer;
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X, Y : Integer) return UInt32
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is
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Off : constant UInt32 := UInt32 (X + Buffer.Width * Y);
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begin
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case Buffer.Color_Mode is
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when ARGB8888 =>
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return 4 * Off;
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when RGB888 =>
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return 3 * Off;
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when ARGB1555 | ARGB4444 | RGB565 | AL88 =>
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return 2 * Off;
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when L8 | AL44 | A8 =>
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return Off;
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when L4 | A4 =>
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return Off / 2;
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end case;
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end Offset;
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----------------
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-- DMA2D_Fill --
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----------------
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procedure DMA2D_Fill
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(Buffer : DMA2D_Buffer;
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