forked from Archive/PX4-Autopilot
136 lines
4.3 KiB
Plaintext
136 lines
4.3 KiB
Plaintext
Contents
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========
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This is the README.txt file for the drivers/lcd/ directory.
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- LCD Header files
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include/nuttx/lcd/lcd.h
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struct lcd_dev_s
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- Binding LCD Drivers
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- Examples: /drivers/lcd/
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- Examples: configs/
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- graphics/
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LCD Header files
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================
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include/nuttx/lcd/lcd.h
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Structures and APIs needed to work with LCD drivers are provided in
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this header file. This header file also depends on some of the same
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definitions used for the frame buffer driver as privided in
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include/nuttx/fb.h.
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struct lcd_dev_s
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Each LCD device driver must implement an instance of struct lcd_dev_s.
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That structure defines a call table with the following methods:
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- Get information about the LCD video controller configuration and the
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configuration of each LCD color plane.
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int (*getvideoinfo)(FAR struct lcd_dev_s *dev,
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FAR struct fb_videoinfo_s *vinfo);
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int (*getplaneinfo)(FAR struct lcd_dev_s *dev, unsigned int planeno,
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FAR struct lcd_planeinfo_s *pinfo);
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- The following are provided only if the video hardware supports RGB
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color mapping:
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int (*getcmap)(FAR struct lcd_dev_s *dev,
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FAR struct fb_cmap_s *cmap);
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int (*putcmap)(FAR struct lcd_dev_s *dev,
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FAR const struct fb_cmap_s *cmap);
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- The following are provided only if the video hardware supports a
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hardware cursor:
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int (*getcursor)(FAR struct lcd_dev_s *dev,
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FAR struct fb_cursorattrib_s *attrib);
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int (*setcursor)(FAR struct lcd_dev_s *dev,
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FAR struct fb_setcursor_s *settings);
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- Get the LCD panel power status (0: full off - CONFIG_LCD_MAXPOWER:
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full on). On backlit LCDs, this setting may correspond to the
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backlight setting.
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int (*getpower)(struct lcd_dev_s *dev);
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- Enable/disable LCD panel power (0: full off - CONFIG_LCD_MAXPOWER:
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full on). On backlit LCDs, this setting may correspond to the
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backlight setting.
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int (*setpower)(struct lcd_dev_s *dev, int power);
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- Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST) */
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int (*getcontrast)(struct lcd_dev_s *dev);
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- Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST)
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int (*setcontrast)(struct lcd_dev_s *dev, unsigned int contrast);
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Binding LCD Drivers
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===================
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LCD drivers are not normally directly accessed by user code, but are
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usually bound to another, higher level device driver. In general, the
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binding sequence is:
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1. Get an instance of struct lcd_dev_s from the hardware-specific LCD
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device driver, and
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2. Provide that instance to the initialization method of the higher
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level device driver.
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Examples: /drivers/lcd/
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=======================
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Re-usable LCD drivers reside in the drivers/lcd directory:
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nokia6100.c. Supports the Nokia 6100 display with either the Philips
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PCF883 or the Epson S1D15G10 display controller. This LCD is used
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with the Olimex LPC1766-STK (but has not been fully integrated).
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p14201.c. Driver for RiT P14201 series display with SD1329 IC
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controller. This OLED is used with older versions of the
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TI/Luminary LM3S8962 Evaluation Kit.
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ug-9664hswag01.c. OLED Display Module, UG-9664HSWAG01", Univision
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Technology Inc. Used with the LPC Xpresso and Embedded Artists
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base board.
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Examples: configs/
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==================
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There are additional LCD drivers in the configs/<board>/src directory
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that support additional LCDs. LCD drivers in the configuration directory
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if they support some differ LCD interface (such as a parallel interface)
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that makes then less re-usable:
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configs/sam3u-ek/src/up_lcd.c.
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configs/hymini-stm32v/src/ssd1289.c.
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SSD1289
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configs/sam3u-ek/src/up_lcd.c
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The SAM3U-EK developement board features a TFT/Transmissive color
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LCD module with touch-screen, FTM280C12D, with integrated driver IC
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HX8346.
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configs/stm3210e-eval/src/up_lcd.c
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This driver supports the following LCDs:
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1. Ampire AM-240320LTNQW00H
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2. Orise Tech SPFD5408B
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3. RenesasSP R61580
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configs/skp16c26/src/up_lcd.c. Untest alphanumeric LCD driver.
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graphics/
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=========
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See also the usage of the LCD driver in the graphics/ directory.
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