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thechaingamer
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ada-git-code

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-----------------------
function Response_R7_Error
(Controller : in out SDMMC_Controller) return SD_Error
is
Start : constant Time := Clock;
Timeout : Boolean := False;
begin
while not Controller.Periph.STA.CCRCFAIL
and then not Controller.Periph.STA.CMDREND
and then not Controller.Periph.STA.CTIMEOUT
loop
if Clock - Start > Milliseconds (1000) then
Timeout := True;
exit;
end if;
end loop;
if Timeout or else Controller.Periph.STA.CTIMEOUT then
-- Card is not v2.0 compliant or card does not support the set
-- voltage range
Controller.Periph.ICR.CTIMEOUTC := True;
return Timeout_Error;
elsif Controller.Periph.STA.CCRCFAIL then
Controller.Periph.ICR.CCRCFAILC := True;
return CRC_Check_Fail;
elsif Controller.Periph.STA.CMDREND then
Controller.Periph.ICR.CMDRENDC := True;
return OK;
else
return Error;
end if;
end Response_R7_Error;
-------------------
-- Stop_Transfer --
-------------------
function Stop_Transfer
(This : in out SDMMC_Controller) return SD_Error
is
Ret : SD_Error;
begin
Send_Cmd (This, Cmd_Desc (Stop_Transmission), 0, Ret);
return Ret;
end Stop_Transfer;
-----------------------
-- Set_Clk_Src_Speed --
-----------------------
procedure Set_Clk_Src_Speed
(This : in out SDMMC_Controller;
CLK : UInt32)
is
begin
This.CLK_In := CLK;
end Set_Clk_Src_Speed;
----------------
-- Initialize --
----------------
function Initialize
(This : in out SDMMC_Controller) return SD_Error
is
Ret : SD_Error;
begin
SDMMC_Init.Card_Identification_Process (This, This.Info, Ret);
This.Card_Type := This.Info.Card_Type;
This.RCA := This.Info.RCA;
return Ret;
end Initialize;
----------
-- Read --
----------
overriding
function Read
(This : in out SDMMC_Controller;
Block_Number : UInt64;
Data : out HAL.Block_Drivers.Block) return Boolean
is
Ret : Boolean;
SD_Err : SD_Error;
DMA_Err : DMA_Error_Code;
begin
Ensure_Card_Informations (This);