Adafruit_TFTDMA.h File Reference

#include <Adafruit_ZeroDMA.h>

Go to the source code of this file.

Classes
class	Adafruit_TFTDMA
	A base class that interfaces with the SAMD51 hardware, including PORTs, timer/counters, DMA and other operipherals. Unlikely to be instantiated on its own, a few subclasses are provided that represent the display and graphics memory in different ways. Applications must be designed around ONE of these subclasses and stick with it; can't toggle among them. More...
class	TFT_framebuffer
	Subclass of Adafruit_TFTDMA providing a whole-screen contiguous framebuffer. This is probably the easiest subclass to understand, but requires an enormous amount of RAM, nearly 160 kilobytes. More...
class	TFT_segmented
	Subclass of Adafruit_TFTDMA that does not provide a contiguous framebuffer. Instead, application provides a buffer for graphics operations, which are divided into segments and redrawn as needed. Uses less RAM that TFT_framebuffer – only as much as one wants to allocate to it (minimum of TFTWIDTH*2 16-bit pixels, or 1,280 bytes, up to a maximum of 65,535 bytes). Invokes a user callback to draw graphics into this buffer before issuing to the screen. There is no permanent framebuffer; graphics are disposed after each update, and dirty rectangle handling is the application;s responsibility (or update the full screen or sections as needed). More...
class	TFT_scanline
	Subclass of Adafruit_TFTDMA in which display (or section thereof) is generated one scanline at a time, using a callback which sets up one or more sequential 'spans,' providing a start address for each and a width in pixels. The total span width MUST match the update region width. This requires careful planning but might be good for scrollers, tile engines, anything with lots of canned pixel data in tables. Uses about 12K RAM. More...

Macros
#define	TFT_INTERFACE_8   0
	8-bit parallel interface
#define	TFT_INTERFACE_16   1
	16-bit parallel - work-in-progress
#define	TFT_INTERFACE_SPI   2
	SPI - totally not implemented at all.
#define	TFT_INTERFACE   TFT_INTERFACE_8
	Select interface methodology.
#define	TFTWIDTH   320
	Display width in pixels.
#define	TFTHEIGHT   240
	Display height in pixels.

Detailed Description

This is part of Adafruit's SAMD51 DMA-driven ILI9341 display library. It is designed specifically for this microcontroller and display combo, using the display's parallel interface.

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Written by Phil "PaintYourDragon" Burgess for Adafruit Industries.

BSD license, all text here must be included in any redistribution.