ILI9341 Library

Overview

ILI9341 driver library for ATXMega/ATMega with hardware/software SPI or 8/16 bit parallel mode. Includes Backlight control with a GPIO or a PWM signal generated by a timer. Supports screen rotation (4 directions). Most of the graphics routines are optimized for speed with inline Assembler.

Options

Enables the SPI- instead of the 8-Bit paralell interface

Const Lcd_enable_spi = False

Use software SPI
Const Lcd_use_soft_spi = False

Enables the 16-Bit paralell interface
Const Lcd_enable_16bit = False

Enable backlight control
Const Lcd_enable_backlight = False

Use a timer to generate a PWM signal for the backlight instead of switching it on or off
Const Lcd_enable_backlight_pwm = True

ATMega only: select the timer to use for the PWM signal (XMega: automatic)
Lcd_backlight_timer Alias Timer2

invert backlight logic (1: off, 0: on)
Const Lcd_invert_backlight = False

Select the port of the display control pins (XMega: PortC-PortF, ATMega: for HW SPI)
Const Lcd_ctrl_port = Portc
Const Lcd_ctrl_port = Portb

8 Bit mode data port
Const Lcd_data_port_1 = Portf
Const Lcd_data_port_1 = Portc

16 Bit mode data port #2
Const Lcd_data_port_2 = Portd

Port where the display reset is connected to
Const Lcd_reset_port = Lcd_ctrl_port

Pin of the display reset signal
Const Lcd_reset_pin = 0

SPI mode pin assignments
Const Lcd_pin_dc = 1
Const Lcd_pin_dc = 4
Const Lcd_pin_cs = 4
Const Lcd_pin_cs = 0
Const Lcd_pin_sdo = 5
Const Lcd_pin_sdo = 2
Const Lcd_pin_clk = 7
Const Lcd_pin_clk = 1

parallel (8/16 Bit) mode pin assignments
Const Lcd_pin_wr = 1
Const Lcd_pin_rd = 5
Const Lcd_pin_dc = 7
Const Lcd_pin_cs = 4

Port of the backlight control signal
Const Lcd_backlight_port = Lcd_ctrl_port

Pin of the backlight control signal
Const Lcd_pin_backlight = 0
Const Lcd_pin_backlight = 6

API

Dim Lcd_screen_width As Word                                                    ' the actual max X and Y coordinates (after rotation)
Dim Lcd_screen_height As Word

Dim Lcd_digit_font As Bit                                                       'For reduced Digit font

' Initializes the control interface (paralell/serial), backlight control and the display
Sub Lcd_init()

Dim Lcd_sleepmode As Bit

Sub Lcd_backlight(byval Value As Byte) 

Sets the backlight value (0: Off, Standby On; 1-254: PWM, 255: On, Display Wakeup)

Sub Lcd_backlight_dim(byval Startvalue As Byte , Byval Endvalue As Byte , Byval Millisecs As Word)

Dim Lcd_rotation As Byte

Sub Lcd_set_rotation(byval Rotation As Byte)

Sub Lcd_fill_rect(byval X1 As Word , Byval Y1 As Word , Byval X2 As Word , Byval Y2 As Word , Byval Color As Word)

Sub Lcd_set_pixel(byval X As Word , Byval Y As Word , Byval Color As Word)

Sub Lcd_pic_flash(byval Xs As Word , Byval Ys As Word , Byval Width As Byte , Byval Height As Word)

Sub Lcd_pic_spi(byval Xs As Word , Byval Ys As Word , Byval Width As Word , Byval Height As Word , Byval Address As Dword)

Dim Lcd_ram_pics_free_ptr As Dword

Function Lcd_load_pic_flash2ram(byval Width As Word , Byval Height As Word) As Word

Sub Lcd_pic_ram(byval Xs As Word , Byval Ys As Word , Byval Width As Word , Byval Height As Word , Byval Address As Dword)

Sub Lcd_pic_bgf(byval Xoffset As Word , Byval Yoffset As Word)

Sub Lcd_clear(byval Color As Word) 

Sub Lcd_invert(byval Inverted As Byte )

Sub Lcd_text(byval S As String , Byval Xoffset As Word , Byval Yoffset As Word , Byval Forecolor As Word , Byval Backcolor As Word)

Sub Lcd_line(byval X1 As Word , Byval Y1 As Word , Byval X2 As Word , Byval Y2 As Word , Byval Color As Word)

Sub Lcd_line_gradient(byval X1 As Word , Byval Y1 As Word , Byval X2 As Word , Byval Y2 As Word , Byval Color1 As Word , Byval Color2 As Word)

Sub Lcd_circle(byval Xcenter As Word , Byval Ycenter As Word , Byval Radius As Word , Byval Color As Word)

Sub Lcd_fill_circle(byval X As Word , Byval Y As Word , Byval Radius As Word , Byval Color As Word)

Sub Lcd_rect(byval X1 As Word , Byval Y1 As Word , Byval X2 As Word , Byval Y2 As Word , Byval Color As Word)

Electrical connection

Donate

This Software is Donationware. <paypal>1</paypal> See here for more informations

Download

• ILI9341 TFT Display Driver Library 1.0