Unit IPSTFT19
From Ultibo.org
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Description
Adafruit 1.9" 320x170 Color IPS TFT Display LCD Driver unit
Adafruit 1.9" 320x170 Color IPS TFT display has 320x170 16-bit full-color pixels and is an IPS display, so the color looks great up to 80 degrees off-axis in any direction.
The TFT driver (Sitronix ST7789) is very similar to the popular ST7735.
Details:
ST7789
Width: 170 Height: 320
SPI Mode: 0 SPI Frequency: 42000000 SPI Chip Select: SPI_CS_0
DC GPIO: GPIO_PIN_25 (Pull: GPIO_PULL_NONE) RST GPIO: GPIO_PIN_27 (Pull: GPIO_PULL_NONE)
Backlight GPIO: GPIO_PIN_18 (GPIO / PWM)
Constants
IPSTFT19 specific constants
IPSTFT19_* IPSTFT19_FRAMEBUFFER_DESCRIPTION = 'Adafruit 1.9" IPS TFT';
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Description of IPSTFT19 device |
IPSTFT19_SIGNATURE = $AF000019;
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IPSTFT19_SCREEN_WIDTH = 170;
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IPSTFT19_SCREEN_HEIGHT = 320;
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IPSTFT19_COLSTART = 35;
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IPSTFT19_DEFAULT_ROTATION = FRAMEBUFFER_ROTATION_90;
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IPSTFT19 GPIO
IPSTFT19_LCD_* IPSTFT19_LCD_DC = GPIO_PIN_25;
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IPSTFT19_LCD_RST = GPIO_PIN_27;
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IPSTFT19_LCD_BL = GPIO_PIN_18;
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Type definitions
IPSTFT19 specific types
PIPSTFT19LCD = ^TIPSTFT19LCD;
TIPSTFT19LCD = record
Signature:LongWord;
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Signature for entry validation |
Rotation:LongWord;
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Framebuffer rotation (eg FRAMEBUFFER_ROTATION_180) |
SPI:PSPIDevice;
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SPI device for this display |
GPIO:PGPIODevice;
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GPIO device for this display |
Framebuffer:PFramebufferDevice;
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Framebuffer (ST7789) device for this display |
Public variables
IPSTFT19 specific variables
IPSTFT19_SPI_DEVICE:String = 'SPI0';
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IPSTFT19_LCD_CHIPSELECT:Word = SPI_CS_0;
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IPSTFT19_BL_PWM_ENABLE:LongBool = True;
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Function declarations
Initialization functions
procedure IPSTFT19Init;
Description: Initialize the IPSTFT19 unit and parameters
| Note | Called only during system startup |
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function IPSTFT19Start(Rotation:LongWord; const Device:String; DisplaySelect:word):THandle;
Description: Start the IPSTFT19 driver and Framebuffer device associated with the display
| Rotation | The rotation of the display (eg FRAMEBUFFER_ROTATION_180) |
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| Device | The SPI device that the ST7789 device is connected to |
| DisplaySelect | The SPI chip select of the ST7789 LCD controller |
| Return | The handle of the IPSTFT19 on success or INVALID_HANDLE_VALUE on failure |
| Note | This function will be called during startup if the parameter IPSTFT19_AUTOSTART is True. Can be called multiple times to support more than one IPSTFT LCD display. |
function IPSTFT19Stop(Handle:THandle):Boolean;
Description: Stop the IPSTFT19 driver and Framebuffer device associated with the display
| Handle | The handle of the IPSTFT19 or INVALID_HANDLE_VALUE for the default display |
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| Return | True if completed or False on failure |
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