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* Examples / LCD: Refactored LCD code from an example

This commit is contained in:
Vovanium 2021-09-21 19:50:35 +03:00
parent f1f2f31b5e
commit 59d3143be5
13 changed files with 427 additions and 370 deletions
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202
examples/common/429disco/board-lcd-io.adb Normal file
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with Ada.Unchecked_Conversion;
with Ada.Real_Time; use Ada.Real_Time;
with Board.SPI.IO;
use Board;
package body Board.LCD.IO is
procedure Initialize_SPI is
begin
-- First initialize SPI to communicate onboard controller
SPI_RCC_EN := True;
SPI_RCC_RST := True;
SPI_RCC_RST := False;
declare
R : STM32.SPI.Control_Register_1 := SPI_Module.CR1;
begin
R.BR := STM32.SPI.PCLK_DIV_16;
R.CPHA := STM32.SPI.Late_Clock;
R.CPOL := STM32.SPI.Positive_Clock;
R.DFF := STM32.SPI.Frame_8_Bit;
R.LSBFIRST := False;
R.SSM := True;
R.SSI := True;
R.MSTR := STM32.SPI.Master;
R.SPE := True;
R.RXONLY := False;
R.BIDIMODE := STM32.SPI.Unidirectional;
R.BIDIOE := True;
R.CRCEN := False;
R.CRCNEXT := False;
SPI_Module.CR1 := R;
end;
declare
R : STM32.SPI.Control_Register_2 := SPI_Module.CR2;
begin
R.FRF := STM32.SPI.Motorola_Mode;
SPI_Module.CR2 := R;
end;
-- Enabling pins
RCC.AHB1ENR (Index.GPIOC) := True;
RCC.AHB1ENR (Index.GPIOD) := True;
RCC.AHB1ENR (Index.GPIOF) := True;
CSX.Set_MODER (STM32.GPIO.Output_Mode);
CSX.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
CSX.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
CSX.Set (True);
DCX.Set_MODER (STM32.GPIO.Output_Mode);
DCX.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
DCX.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
DCX.Set (True);
SCL_Port.AFR (SCL_Bit) := STM32.GPIO.Alternate_Functions.SPI5;
SCL.Set_MODER (STM32.GPIO.Alternate_Mode);
SCL.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
SCL.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
SCL.Set_PUPDR (STM32.GPIO.Pull_Up);
SDA_Port.AFR (SDA_Bit) := STM32.GPIO.Alternate_Functions.SPI5;
SDA.Set_MODER (STM32.GPIO.Alternate_Mode);
SDA.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
SDA.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
SDA.Set_PUPDR (STM32.GPIO.Pull_Up);
end;
procedure Enter is
begin
CSX.Set (False);
end;
procedure Leave is
begin
CSX.Set (True);
end;
procedure Command (Command : ILI9341.Command) is
function To_Unsigned_8 is new Ada.Unchecked_Conversion (ILI9341.Command, Interfaces.Unsigned_8);
begin
DCX.Set(False);
SPI.IO.Transmit (LCD.SPI_Module, To_Unsigned_8 (Command));
end;
procedure Command (Command : ILI9341.Command; Data_1 : Interfaces.Unsigned_8) is
begin
IO.Command (Command);
DCX.Set (True);
SPI.IO.Transmit (LCD.SPI_Module, Data_1);
end;
procedure Data (Data : Interfaces.Unsigned_8) is
begin
DCX.Set (True);
SPI.IO.Transmit (LCD.SPI_Module, Data);
end;
procedure Data (Data : Unsigned_8_Array) is
begin
DCX.Set (True);
for D of Data loop
SPI.IO.Transmit (LCD.SPI_Module, D);
end loop;
end;
procedure Command (Command : ILI9341.Command; Data : Unsigned_8_Array) is
begin
IO.Command (Command);
IO.Data (Data);
end;
procedure Initialize_Controller is
Now : Time := Clock;
begin
Enter;
-- Initialization procedure per
-- https://github.com/mongoose-os-libs/ili9341-spi
-- released under Apache licence
Command (ILI9341.SWRESET);
Now := Clock + Milliseconds (5);
delay until Now;
Command (ILI9341.Power_Control_A, (16#39#, 16#2C#, 16#00#, 16#34#, 16#02#));
-- Vcore = 1.6, DDVDH = 5.6 (default)
Command (ILI9341.Power_Control_B, (16#00#, 16#C1#, 16#30#));
-- PCEQ = 1, DRV_ena = 0, Power_Control = 0, DRV_vml = 0, DRV_vmh = 0, DC_ena = 1
--Command (ILI9341.Undocumented_EF, 16#03#, 16#80#, 16#02#);
Command (ILI9341.Driver_Timing_Control_A, (16#85#, 16#00#, 16#78#));
-- NOW = 1, EQ = 0, CR = 0, precharge = 2unit
Command (ILI9341.Driver_Timing_Control_B, (16#00#, 16#00#));
-- T1 = 0, T2 = 0, T3 = 0, T3 = 0
Command (ILI9341.Power_On_Sequence_Control, (16#64#, 16#03#, 16#12#, 16#81#));
-- CP1 = 1frame, CP23 = 3frame, En_vcl = 1st, En_ddvdh = 4th, En_vgh = 2nd, En_vgl = 3rd, DDVDH = En
Command (ILI9341.Pump_Ratio_Control, (16#20#));
-- DDVDH = 2xVCI
Command (ILI9341.PWCTRL1, (16#23#));
-- GVDD level = 4.45 V
Command (ILI9341.PWCTRL2, (16#10#));
-- VGH = VCIx7, VGL = VCIx4
Command (ILI9341.VMCTRL1, (16#3E#, 16#28#));
-- VCOMH = 4.250, VCOML = -1.500
Command (ILI9341.VMCTRL2, (16#86#));
-- nVM = 1, VCOMH = VMH - 58
Command (ILI9341.MADCTL, (16#48#));
-- MY = 0, MX = 1, MV = 0, ML = 0, BGR = 1, MH = 0
Command (ILI9341.PIXSET, (16#66#));
-- RGB = 18bpp, MCU = 18bpp
Command (ILI9341.DINVOFF);
Command (ILI9341.FRMCTR1, (16#00#, 16#13#));
-- DivA = fosc, RTNA = 19 clocks
Command (ILI9341.DISCTRL, (16#08#, 16#82#, 16#27#, 16#00#));
-- PTG Intervalscan, PT = V63/V0/VCOMH/L, REV = White, ISC = 5 fr, GS = G1>G320,W, NL = 320, Fosc = DOTCLK/2
Command (ILI9341.PTLAR, (16#00#, 16#00#, 16#01#, 16#3F#));
-- SR = 0, ER = 319
Command (ILI9341.Enable_3G, (16#02#));
-- 3G = disable
Command (ILI9341.GAMSET, (16#01#));
-- Curve = G2.2
Command (ILI9341.PGAMCTRL, (16#0F#, 16#31#, 16#2B#, 16#0C#, 16#0E#,
16#08#, 16#4E#, 16#F1#, 16#37#, 16#07#, 16#10#, 16#03#, 16#0E#, 16#09#, 16#00#));
Command (ILI9341.NGAMCTRL, (16#00#, 16#0E#, 16#14#, 16#03#, 16#11#,
16#07#, 16#31#, 16#C1#, 16#48#, 16#08#, 16#0F#, 16#0C#, 16#31#, 16#36#, 16#0F#));
Now := Clock + Milliseconds (120);
delay until Now;
Command (ILI9341.SLPOUT);
Command (ILI9341.DISPON);
LCD.IO.Leave;
end Initialize_Controller;
procedure Plot_24 (X, Y, R, G, B: Integer) is
begin
-- Draw a pixel;
Enter;
Command (ILI9341.CASET, (
Interfaces.Unsigned_8 (X / 256),
Interfaces.Unsigned_8 (X mod 256),
Interfaces.Unsigned_8 ((X + 1) / 256),
Interfaces.Unsigned_8 ((X + 1) mod 256)));
Command (ILI9341.PASET, (
Interfaces.Unsigned_8 (Y / 256),
Interfaces.Unsigned_8 (Y mod 256),
Interfaces.Unsigned_8 ((Y + 1) / 256),
Interfaces.Unsigned_8 ((Y + 1) mod 256)));
Command (ILI9341.RAMWR, (
Interfaces.Unsigned_8 (G),
Interfaces.Unsigned_8 (B),
Interfaces.Unsigned_8 (R)));
Leave;
end;
begin
Initialize_SPI;
Initialize_Controller;
end Board.LCD.IO;

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with Interfaces;
with STM32.GPIO.Ports; use STM32.GPIO.Ports;
with ILI9341;
package Board.LCD.IO is
package CSX is new GPIO_Port_Boolean (LCD.CSX_Port, LCD.CSX_Bit);
package DCX is new GPIO_Port_Boolean (LCD.DCX_Port, LCD.DCX_Bit);
package SCL is new GPIO_Port_Boolean (LCD.SCL_Port, LCD.SCL_Bit);
package SDA is new GPIO_Port_Boolean (LCD.SDA_Port, LCD.SDA_Bit);
procedure Initialize_SPI;
procedure Enter;
procedure Leave;
procedure Command (Command : ILI9341.Command);
-- These LCD_Command's are for convenience
procedure Command (Command : ILI9341.Command; Data_1 : Interfaces.Unsigned_8);
procedure Data (Data : Interfaces.Unsigned_8);
type Unsigned_8_Array is array (Integer range <>) of Interfaces.Unsigned_8;
procedure Data (Data : Unsigned_8_Array);
procedure Command (Command : ILI9341.Command; Data : Unsigned_8_Array);
procedure Initialize_Controller;
procedure Plot_24 (X, Y, R, G, B: Integer);
end Board.LCD.IO;

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with STM32.SPI;
package Board.LCD is
CSX_Port : GPIO_Registers renames GPIOC;
CSX_Bit : constant Port_Bit_Number := 2;
DCX_Port : GPIO_Registers renames GPIOD;
DCX_Bit : constant Port_Bit_Number := 13;
TE_Port : GPIO_Registers renames GPIOD;
TE_Bit : constant Port_Bit_Number := 11;
SCL_Port : GPIO_Registers renames GPIOF;
SCL_Bit : constant Port_Bit_Number := 7;
SDA_Port : GPIO_Registers renames GPIOF;
SDA_Bit : constant Port_Bit_Number := 9;
SPI_Module : STM32.SPI.SPI_Registers renames SPI5;
SPI_RCC_EN : Boolean renames RCC.APB2ENR (Index.SPI5);
SPI_RCC_RST : Boolean renames RCC.APB2RSTR (Index.SPI5);
end Board.LCD;

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package Board.SPI is
end;

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with STM32.RCC; use STM32.RCC;
with STM32.GPIO; use STM32.GPIO;
with STM32.SPI;
with Chip.Units; use Chip.Units;
package Board is
@ -20,25 +19,6 @@ package Board is
LED_2_RCC_EN : Boolean renames RCC.AHB1ENR(Index.GPIOG);
-- LCD
LCD_CSX_Port : GPIO_Registers renames GPIOC;
LCD_CSX_Bit : constant Port_Bit_Number := 2;
LCD_DCX_Port : GPIO_Registers renames GPIOD;
LCD_DCX_Bit : constant Port_Bit_Number := 13;
LCD_TE_Port : GPIO_Registers renames GPIOD;
LCD_TE_Bit : constant Port_Bit_Number := 11;
LCD_SCL_Port : GPIO_Registers renames GPIOF;
LCD_SCL_Bit : constant Port_Bit_Number := 7;
LCD_SDA_Port : GPIO_Registers renames GPIOF;
LCD_SDA_Bit : constant Port_Bit_Number := 9;
LCD_SPI_Module : STM32.SPI.SPI_Registers renames SPI5;
-- More internals
APB2_Frequency : constant := 90_000_000; -- Set by board support

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package body Board.SPI.IO is
procedure Transmit_Receive (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_16;
Input : out Interfaces.Unsigned_16)
is
begin
while not Unit.SR.TXE loop
null;
end loop;
Unit.DR := Output;
if Unit.SR.BSY then
null;
end if;
while not Unit.SR.RXNE loop
null;
end loop;
if Unit.SR.RXNE then
Input := Unit.DR;
end if;
end;
procedure Transmit (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_16)
is
pragma Warnings (Off, "variable ""X"" is assigned but never read");
X : Interfaces.Unsigned_16;
pragma Warnings (On, "variable ""X"" is assigned but never read");
begin
Transmit_Receive (Unit, Output, X);
end;
procedure Transmit_Receive (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_8;
Input : out Interfaces.Unsigned_8)
is
X : Interfaces.Unsigned_16;
begin
Transmit_Receive (Unit, Interfaces.Unsigned_16 (Output), X);
Input := Interfaces.Unsigned_8 (X);
end;
procedure Transmit (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_8)
is
pragma Warnings (Off, "variable ""X"" is assigned but never read");
X : Interfaces.Unsigned_16;
pragma Warnings (On, "variable ""X"" is assigned but never read");
begin
Transmit_Receive (Unit, Interfaces.Unsigned_16 (Output), X);
end;
end Board.SPI.IO;

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with Interfaces;
with STM32.SPI;
package Board.SPI.IO is
procedure Transmit_Receive (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_16;
Input : out Interfaces.Unsigned_16);
procedure Transmit (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_16);
procedure Transmit_Receive (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_8;
Input : out Interfaces.Unsigned_8);
procedure Transmit (
Unit : in out STM32.SPI.SPI_Registers;
Output : Interfaces.Unsigned_8);
end Board.SPI.IO;

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with Interfaces;
with Ada.Real_Time; use Ada.Real_Time;
with Ada.Unchecked_Conversion;
with Chip.Units; use Chip.Units;
with Board.UART.IO; use Board;
with ILI9341;
with STM32.RCC; use STM32.RCC;
with STM32.SPI;
with STM32.GPIO.Ports; use STM32.GPIO.Ports;
procedure LCD is
package LED is new GPIO_Port_Boolean(LED_Port, LED_Bit);
package LED_2 is new GPIO_Port_Boolean(LED_2_Port, LED_2_Bit);
package CSX is new GPIO_Port_Boolean (LCD_CSX_Port, LCD_CSX_Bit);
package DCX is new GPIO_Port_Boolean (LCD_DCX_Port, LCD_DCX_Bit);
package SCL is new GPIO_Port_Boolean (LCD_SCL_Port, LCD_SCL_Bit);
package SDA is new GPIO_Port_Boolean (LCD_SDA_Port, LCD_SDA_Bit);
procedure SPI_Transmit (Data : Interfaces.Unsigned_16) is
pragma Warnings (Off, "variable ""X"" is assigned but never read");
X: Interfaces.Unsigned_16;
pragma Warnings (On, "variable ""X"" is assigned but never read");
begin
--LED.Set(LED_On);
while not LCD_SPI_Module.SR.TXE loop
null;
end loop;
LED_2.Set (LED_2_On);
LCD_SPI_Module.DR := Data;
if LCD_SPI_Module.SR.BSY then
null;
end if;
while not LCD_SPI_Module.SR.RXNE loop
null;
end loop;
--LED.Set(not LED_On);
LED_2.Set (not LED_2_On);
if LCD_SPI_Module.SR.RXNE then
X := LCD_SPI_Module.DR;
--UART.IO.Transmit ("Rcv: " & Interfaces.Unsigned_16'Image (X) & ASCII.CR & ASCII.LF);
end if;
end;
procedure SPI_Transmit (Data : Interfaces.Unsigned_8) is
begin
SPI_Transmit (Interfaces.Unsigned_16 (Data));
end;
procedure LCD_Command (Command : ILI9341.Command) is
function To_Unsigned_8 is new Ada.Unchecked_Conversion (ILI9341.Command, Interfaces.Unsigned_8);
begin
DCX.Set(False);
SPI_Transmit (To_Unsigned_8 (Command));
end;
-- These LCD_Command's are for convenience
procedure LCD_Command (Command : ILI9341.Command; Data_1 : Interfaces.Unsigned_8) is
begin
LCD_Command (Command);
DCX.Set (True);
SPI_Transmit (Data_1);
end;
procedure LCD_Command (Command : ILI9341.Command; Data_1, Data_2 : Interfaces.Unsigned_8) is
begin
LCD_Command (Command);
DCX.Set (True);
SPI_Transmit (Data_1);
SPI_Transmit (Data_2);
end;
procedure LCD_Command (Command : ILI9341.Command; Data_1, Data_2, Data_3 : Interfaces.Unsigned_8) is
begin
LCD_Command (Command);
DCX.Set (True);
SPI_Transmit (Data_1);
SPI_Transmit (Data_2);
SPI_Transmit (Data_3);
end;
procedure LCD_Command (Command : ILI9341.Command; Data_1, Data_2, Data_3, Data_4 : Interfaces.Unsigned_8) is
begin
LCD_Command (Command);
DCX.Set (True);
SPI_Transmit (Data_1);
SPI_Transmit (Data_2);
SPI_Transmit (Data_3);
SPI_Transmit (Data_4);
end;
procedure LCD_Command (Command : ILI9341.Command; Data_1, Data_2, Data_3, Data_4, Data_5 : Interfaces.Unsigned_8) is
begin
LCD_Command (Command);
DCX.Set (True);
SPI_Transmit (Data_1);
SPI_Transmit (Data_2);
SPI_Transmit (Data_3);
SPI_Transmit (Data_4);
SPI_Transmit (Data_5);
end;
procedure LCD_Data (Data : Interfaces.Unsigned_8) is
begin
DCX.Set (True);
SPI_Transmit (Data);
end;
type Unsigned_8_Array is array (Integer range <>) of Interfaces.Unsigned_8;
procedure LCD_Data (Data : Unsigned_8_Array) is
begin
DCX.Set (True);
for D of Data loop
SPI_Transmit (D);
end loop;
end;
procedure Plot (X, Y, R, G, B: Integer) is
begin
-- Draw a pixel;
CSX.Set (False);
LCD_Command (ILI9341.CASET,
Interfaces.Unsigned_8 (X / 256),
Interfaces.Unsigned_8 (X mod 256),
Interfaces.Unsigned_8 ((X + 1) / 256),
Interfaces.Unsigned_8 ((X + 1) mod 256));
LCD_Command (ILI9341.PASET,
Interfaces.Unsigned_8 (Y / 256),
Interfaces.Unsigned_8 (Y mod 256),
Interfaces.Unsigned_8 ((Y + 1) / 256),
Interfaces.Unsigned_8 ((Y + 1) mod 256));
LCD_Command (ILI9341.RAMWR,
Interfaces.Unsigned_8 (G),
Interfaces.Unsigned_8 (B),
Interfaces.Unsigned_8 (R));
CSX.Set (True);
end;
Period : constant Time_Span := Milliseconds(2000);
Now : Time := Clock;
--X, Y : Integer := 0;
--Colour : Integer := 0;
Scale : Float := 1.0/60.0;
CRe, CIm : Float;
ZRe, ZIm, T : Float;
N : Integer;
begin
-- First initialize SPI to communicate onboard controller
RCC.APB2ENR (Index.SPI5) := True;
RCC.APB2RSTR (Index.SPI5) := True;
RCC.APB2RSTR (Index.SPI5) := False;
UART.IO.Transmit (Boolean'Image (LCD_SPI_Module.CR1.SPE) & ASCII.CR & ASCII.LF);
declare
R : STM32.SPI.Control_Register_1 := LCD_SPI_Module.CR1;
begin
R.BR := STM32.SPI.PCLK_DIV_16;
R.CPHA := STM32.SPI.Late_Clock;
R.CPOL := STM32.SPI.Positive_Clock;
R.DFF := STM32.SPI.Frame_8_Bit;
R.LSBFIRST := False;
R.SSM := True;
R.SSI := True;
R.MSTR := STM32.SPI.Master;
R.SPE := True;
R.RXONLY := False;
R.BIDIMODE := STM32.SPI.Unidirectional;
R.BIDIOE := True;
R.CRCEN := False;
R.CRCNEXT := False;
LCD_SPI_Module.CR1 := R;
end;
declare
R : STM32.SPI.Control_Register_2 := LCD_SPI_Module.CR2;
begin
R.FRF := STM32.SPI.Motorola_Mode;
LCD_SPI_Module.CR2 := R;
end;
-- Enabling pins
RCC.AHB1ENR (Index.GPIOC) := True;
RCC.AHB1ENR (Index.GPIOD) := True;
RCC.AHB1ENR (Index.GPIOF) := True;
CSX.Set_MODER (STM32.GPIO.Output_Mode);
CSX.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
CSX.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
CSX.Set (True);
DCX.Set_MODER (STM32.GPIO.Output_Mode);
DCX.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
DCX.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
DCX.Set (True);
LCD_SCL_Port.AFR (LCD_SCL_Bit) := STM32.GPIO.Alternate_Functions.SPI5;
SCL.Set_MODER (STM32.GPIO.Alternate_Mode);
SCL.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
SCL.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
SCL.Set_PUPDR (STM32.GPIO.Pull_Up);
LCD_SDA_Port.AFR (LCD_SDA_Bit) := STM32.GPIO.Alternate_Functions.SPI5;
SDA.Set_MODER (STM32.GPIO.Alternate_Mode);
SDA.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
SDA.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
SDA.Set_PUPDR (STM32.GPIO.Pull_Up);
-- LED to see what's happen
LED_RCC_EN := True;
LED.Set_MODER (STM32.GPIO.Output_Mode);
LED.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
LED.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
LED.Set_PUPDR (STM32.GPIO.No_Pull);
LED.Set (not LED_On);
LED_2_RCC_EN := True;
LED_2.Set_MODER (STM32.GPIO.Output_Mode);
LED_2.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
LED_2.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
LED_2.Set_PUPDR (STM32.GPIO.No_Pull);
LED_2.Set (not LED_2_On);
UART.IO.Transmit (Boolean'Image (LCD_SPI_Module.CR1.SPE) & ASCII.CR & ASCII.LF);
UART.IO.Transmit (STM32.GPIO.Alternate_Function'Image (LCD_SCL_Port.AFR (LCD_SCL_Bit)) & ASCII.CR & ASCII.LF);
-- Trying to transmit
CSX.Set (False);
-- Initialization procedure per
-- https://github.com/mongoose-os-libs/ili9341-spi
-- released under Apache licence
LCD_Command (ILI9341.SWRESET);
Now := Clock + Milliseconds (5);
delay until Now;
LCD_Command (ILI9341.Power_Control_A, 16#39#, 16#2C#, 16#00#, 16#34#, 16#02#);
-- Vcore = 1.6, DDVDH = 5.6 (default)
LCD_Command (ILI9341.Power_Control_B, 16#00#, 16#C1#, 16#30#);
-- PCEQ = 1, DRV_ena = 0, Power_Control = 0, DRV_vml = 0, DRV_vmh = 0, DC_ena = 1
--LCD_Command (ILI9341.Undocumented_EF, 16#03#, 16#80#, 16#02#);
LCD_Command (ILI9341.Driver_Timing_Control_A, 16#85#, 16#00#, 16#78#);
-- NOW = 1, EQ = 0, CR = 0, precharge = 2unit
LCD_Command (ILI9341.Driver_Timing_Control_B, 16#00#, 16#00#);
-- T1 = 0, T2 = 0, T3 = 0, T3 = 0
LCD_Command (ILI9341.Power_On_Sequence_Control, 16#64#, 16#03#, 16#12#, 16#81#);
-- CP1 = 1frame, CP23 = 3frame, En_vcl = 1st, En_ddvdh = 4th, En_vgh = 2nd, En_vgl = 3rd, DDVDH = En
LCD_Command (ILI9341.Pump_Ratio_Control, 16#20#);
-- DDVDH = 2xVCI
LCD_Command (ILI9341.PWCTRL1, 16#23#);
-- GVDD level = 4.45 V
LCD_Command (ILI9341.PWCTRL2, 16#10#);
-- VGH = VCIx7, VGL = VCIx4
LCD_Command (ILI9341.VMCTRL1, 16#3E#, 16#28#);
-- VCOMH = 4.250, VCOML = -1.500
LCD_Command (ILI9341.VMCTRL2, 16#86#);
-- nVM = 1, VCOMH = VMH - 58
LCD_Command (ILI9341.MADCTL, 16#48#);
-- MY = 0, MX = 1, MV = 0, ML = 0, BGR = 1, MH = 0
LCD_Command (ILI9341.PIXSET, 16#66#);
-- RGB = 18bpp, MCU = 18bpp
LCD_Command (ILI9341.DINVOFF);
LCD_Command (ILI9341.FRMCTR1, 16#00#, 16#13#);
-- DivA = fosc, RTNA = 19 clocks
LCD_Command (ILI9341.DISCTRL, 16#08#, 16#82#, 16#27#, 16#00#);
-- PTG Intervalscan, PT = V63/V0/VCOMH/L, REV = White, ISC = 5 fr, GS = G1>G320,W, NL = 320, Fosc = DOTCLK/2
LCD_Command (ILI9341.PTLAR, 16#00#, 16#00#, 16#01#, 16#3F#);
-- SR = 0, ER = 319
LCD_Command (ILI9341.Enable_3G, 16#02#);
-- 3G = disable
LCD_Command (ILI9341.GAMSET, 16#01#);
-- Curve = G2.2
LCD_Command (ILI9341.PGAMCTRL);
LCD_Data (Unsigned_8_Array'(16#0F#, 16#31#, 16#2B#, 16#0C#,
16#0E#, 16#08#, 16#4E#, 16#F1#, 16#37#, 16#07#, 16#10#,
16#03#, 16#0E#, 16#09#, 16#00#));
LCD_Command (ILI9341.NGAMCTRL);
LCD_Data (Unsigned_8_Array'(16#00#, 16#0E#, 16#14#, 16#03#,
16#11#, 16#07#, 16#31#, 16#C1#, 16#48#, 16#08#, 16#0F#,
16#0C#, 16#31#, 16#36#, 16#0F#));
Now := Clock + Milliseconds (120);
delay until Now;
LCD_Command (ILI9341.SLPOUT);
LCD_Command (ILI9341.DISPON);
CSX.Set (True);
loop
for Y in Integer range 0 .. 319 loop
for X in Integer range 0 .. 239 loop
CRe := Float(- Y + 160) * Scale - 1.403;
CIm := Float(X - 120) * Scale;
N := 0;
ZRe := CRe;
ZIm := CIm;
while ZRe * ZRe + ZIm * ZIm < 4.0 and N < 256 loop
T := ZRe * ZRe - ZIm * ZIm + CRe;
ZIm := 2.0 * ZRe * ZIm + CIm;
ZRe := T;
N := N + 1;
end loop;
if N = 256 then
Plot (X, Y, 0, 0, 0);
else
Plot (X, Y, 255 - N, N, 255 - N);
end if;
end loop;
end loop;
Scale := Scale * 0.63;
Now := Clock + Period;
delay until Now;
--LED.Set (not LED_On);
end loop;
end LCD;

2
examples/lcd/Makefile → examples/spi_lcd/Makefile
View File

@ -1,5 +1,5 @@
# Here's a example project name
X = lcd
X = spi_lcd
# Supported board list
BOARDS = 429disco

80
examples/spi_lcd/spi_lcd.adb Normal file
View File

@ -0,0 +1,80 @@
with Interfaces;
with Ada.Real_Time; use Ada.Real_Time;
with Chip.Units; use Chip.Units;
with Board.LCD.IO;
use Board;
with ILI9341;
with STM32.RCC; use STM32.RCC;
with STM32.SPI;
with STM32.GPIO.Ports; use STM32.GPIO.Ports;
procedure SPI_LCD is
package LED is new GPIO_Port_Boolean(LED_Port, LED_Bit);
package LED_2 is new GPIO_Port_Boolean(LED_2_Port, LED_2_Bit);
Period : constant Time_Span := Milliseconds(2000);
Now : Time := Clock;
--X, Y : Integer := 0;
--Colour : Integer := 0;
Scale : Float := 1.0/60.0;
CRe, CIm : Float;
ZRe, ZIm, T : Float;
N : Integer;
begin
-- LED to see what's happen
LED_RCC_EN := True;
LED.Set_MODER (STM32.GPIO.Output_Mode);
LED.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
LED.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
LED.Set_PUPDR (STM32.GPIO.No_Pull);
LED.Set (not LED_On);
LED_2_RCC_EN := True;
LED_2.Set_MODER (STM32.GPIO.Output_Mode);
LED_2.Set_OTYPER (STM32.GPIO.Push_Pull_Type);
LED_2.Set_OSPEEDR (STM32.GPIO.Very_High_Speed);
LED_2.Set_PUPDR (STM32.GPIO.No_Pull);
LED_2.Set (not LED_2_On);
loop
for Y in Integer range 0 .. 319 loop
for X in Integer range 0 .. 239 loop
CRe := Float(- Y + 160) * Scale - 1.403;
CIm := Float(X - 120) * Scale;
N := 0;
ZRe := CRe;
ZIm := CIm;
while ZRe * ZRe + ZIm * ZIm < 4.0 and N < 256 loop
T := ZRe * ZRe - ZIm * ZIm + CRe;
ZIm := 2.0 * ZRe * ZIm + CIm;
ZRe := T;
N := N + 1;
end loop;
if N = 256 then
LCD.IO.Plot_24 (X, Y, 0, 0, 0);
else
LCD.IO.Plot_24 (X, Y, 255 - N, N, 255 - N);
end if;
end loop;
end loop;
Scale := Scale * 0.63;
Now := Clock + Period;
delay until Now;
--LED.Set (not LED_On);
end loop;
end SPI_LCD;

6
examples/lcd/lcd_429disco.gpr → examples/spi_lcd/spi_lcd_429disco.gpr
View File

@ -1,8 +1,8 @@
with "../../stm32f4_library.gpr";
project LCD_429disco is
project SPI_LCD_429disco is
for Languages use("Ada");
for Main use("lcd.adb");
for Main use("spi_lcd.adb");
for Object_Dir use "objects/429disco";
for Target use "arm-eabi";
for Runtime("Ada") use "ravenscar-sfp-stm32f429disco";
@ -22,4 +22,4 @@ project LCD_429disco is
for Connection_Tool use "st-util";
end IDE;
end LCD_429disco;
end SPI_LCD_429disco;

2
source/f4/stm32-spi.ads
View File

@ -290,7 +290,7 @@ package STM32.SPI is
pragma Volatile_Full_Access (I2SCFGR);
I2SPR : I2S_Prescaler_Register;
pragma Volatile_Full_Access (I2SPR);
end record;
end record with Volatile;
for SPI_Registers use record
CR1 at 16#00# range 0 .. 15;
CR2 at 16#04# range 0 .. 15;