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Ensure_Card_Informations (This);
-- Flush the data cache
Cortex_M.Cache.Clean_DCache
(Start => Data (Data'First)'Address,
Len => Data'Length);
This.SD_Int.Set_Transfer_State (This);
Ret := Write_Blocks_DMA
(This,
Block_Number * 512,
Data);
-- this always leaves the last 12 byte standing. Why?
-- also...NDTR is not what it should be.
if Ret /= OK then
This.TX_DMA_Int.Clear_Transfer_State;
This.SD_Int.Clear_Transfer_State;
This.TX_DMA_Int.Abort_Transfer (DMA_Err);
return False;
end if;
This.TX_DMA_Int.Wait_For_Completion (DMA_Err); -- this unblocks
This.SD_Int.Wait_Transfer (Ret); -- TX underrun!
-- this seems slow. Do we have to wait?
loop
-- FIXME: some people claim, that this goes wrong with multiblock, see
-- http://blog.frankvh.com/2011/09/04/stm32f2xx-sdio-sd-card-interface/
exit when not Get_Flag (This, TX_Active);
end loop;
if Last_Operation (This) =
Write_Multiple_Blocks_Operation
then
Ret := Stop_Transfer (This);
end if;
Clear_All_Status (This.TX_DMA_Int.Controller.all, This.TX_DMA_Int.Stream);
Disable (This.TX_DMA_Int.Controller.all, This.TX_DMA_Int.Stream);
declare
Data_Incomplete : constant Boolean :=
This.TX_DMA_Int.Buffer_Error and then
Items_Transferred (This.TX_DMA_Int.Controller.all, This.TX_DMA_Int.Stream)
/= Data'Length / 4;
begin
return Ret = OK
and then DMA_Err = DMA_No_Error
and then not Data_Incomplete;
Function Definition: function To_Word is new Ada.Unchecked_Conversion (System.Address, UInt32);
Function Body: function Offset (Buffer : DMA2D_Buffer;
X, Y : Integer) return UInt32 with Inline_Always;
DMA2D_Init_Transfer_Int : DMA2D_Sync_Procedure := null;
DMA2D_Wait_Transfer_Int : DMA2D_Sync_Procedure := null;
------------------
-- DMA2D_DeInit --
------------------
procedure DMA2D_DeInit is
begin
RCC_Periph.AHB1ENR.DMA2DEN := False;
DMA2D_Init_Transfer_Int := null;
DMA2D_Wait_Transfer_Int := null;
end DMA2D_DeInit;
----------------
-- DMA2D_Init --
----------------
procedure DMA2D_Init
(Init : DMA2D_Sync_Procedure;
Wait : DMA2D_Sync_Procedure)
is
begin
if DMA2D_Init_Transfer_Int = Init then
return;
end if;
DMA2D_DeInit;
DMA2D_Init_Transfer_Int := Init;
DMA2D_Wait_Transfer_Int := Wait;
RCC_Periph.AHB1ENR.DMA2DEN := True;
RCC_Periph.AHB1RSTR.DMA2DRST := True;
RCC_Periph.AHB1RSTR.DMA2DRST := False;
end DMA2D_Init;
------------
-- Offset --
------------
function Offset (Buffer : DMA2D_Buffer;