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This.IOE_AF_Config (TOUCH_IO_ALL, False);
This.Write_Register (IOE_REG_TSC_CFG, 16#9A#);
This.Write_Register (IOE_REG_FIFO_TH, 16#01#);
This.Write_Register (IOE_REG_FIFO_STA, 16#01#);
This.Write_Register (IOE_REG_FIFO_TH, 16#00#);
This.Write_Register (IOE_REG_TSC_FRACT_Z, 16#00#);
This.Write_Register (IOE_REG_TSC_I_DRIVE, 16#01#);
This.Write_Register (IOE_REG_TSC_CTRL, 16#01#);
This.Write_Register (IOE_REG_INT_STA, 16#FF#);
return True;
end Initialize;
----------------
-- Set_Bounds --
----------------
overriding
procedure Set_Bounds (This : in out STMPE811_Device;
Width : Natural;
Height : Natural;
Swap : HAL.Touch_Panel.Swap_State)
is
begin
This.LCD_Natural_Width := Width;
This.LCD_Natural_Height := Height;
This.Swap := Swap;
end Set_Bounds;
-------------------------
-- Active_Touch_Points --
-------------------------
overriding
function Active_Touch_Points (This : in out STMPE811_Device)
return Touch_Identifier
is
Val : constant UInt8 := This.Read_Register (IOE_REG_TSC_CTRL) and 16#80#;
begin
if Val = 0 then
This.Write_Register (IOE_REG_FIFO_STA, 16#01#);
This.Write_Register (IOE_REG_FIFO_STA, 16#00#);
return 0;
else
return 1;
end if;
end Active_Touch_Points;
---------------------
-- Get_Touch_Point --
---------------------
overriding
function Get_Touch_Point (This : in out STMPE811_Device;
Touch_Id : Touch_Identifier)
return TP_Touch_State
is
State : TP_Touch_State;
Raw_X : UInt32;
Raw_Y : UInt32;
Raw_Z : UInt32;
X : Integer;
Y : Integer;
Tmp : Integer;
begin
-- Check Touch detected bit in CTRL register
if Touch_Id /= 1 or else This.Active_Touch_Points = 0 then
return (0, 0, 0);
end if;
declare
Data_X : constant TSC_Data := This.Read_Data (IOE_REG_TSC_DATA_X, 2);
Data_Y : constant TSC_Data := This.Read_Data (IOE_REG_TSC_DATA_Y, 2);
Data_Z : constant TSC_Data := This.Read_Data (IOE_REG_TSC_DATA_Z, 1);
Z_Frac : constant TSC_Data := This.Read_Data (IOE_REG_TSC_FRACT_Z, 1);
begin
Raw_X := 2 ** 12 -
(Shift_Left (UInt32 (Data_X (1)) and 16#0F#, 8) or UInt32 (Data_X (2)));
Raw_Y :=
Shift_Left (UInt32 (Data_Y (1)) and 16#0F#, 8) or UInt32 (Data_Y (2));
Raw_Z :=
Shift_Right (UInt32 (Data_Z (1)), Natural (Z_Frac (1) and 2#111#));
Function Definition: function To_UInt16 is
Function Body: new Ada.Unchecked_Conversion (UInt16_HL_Type, UInt16);
Ret : TP_Touch_State;
Regs : FT5336_Pressure_Registers;