259 lines
8.8 KiB
Plaintext
259 lines
8.8 KiB
Plaintext
nuttx/drivers/lcd README
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========================
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This is the README.txt file for the drivers/lcd/ directory.
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Contents
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========
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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: boards/
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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 provided in
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include/nuttx/video/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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LCDs:
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----
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mio283qt2.c. This is a driver for the MI0283QT-2 LCD from Multi-Inno
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Technology Co., Ltd. This LCD is based on the Himax HX8347-D LCD
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controller.
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mio283qt9a.c. This is a driver for the MI0283QT-9A LCD from Multi-Inno
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Technology Co., Ltd. This LCD is based on the Ilitek ILI9341 LCD
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controller.
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ssd12989.c. Generic LCD driver for LCDs based on the Solomon Systech
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SSD1289 LCD controller. Think of this as a template for an LCD driver
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that you will probably have to customize for any particular LCD
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hardware. (See also boards/arm/stm32/hymini-stm32v/src/ssd1289.c below).
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st7567.c. LCD Display Module, ST7567, Univision Technology Inc. Used
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with the LPCXpresso and Embedded Artists base board.
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memlcd.c. Sharp Memory LCD Suite, LS013B7DH01, LS013B7DH03, etc.
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There are some more different models, they are basically controlled
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by similar logics, thus this driver can be extended.
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ra8875.c. RAiO Technologies RA8875 LCD controller. Contributed by
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Marten Svanfeldt.
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OLEDs:
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-----
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p14201.c. Driver for RiT P14201 series display with SD1329 IC
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controller. Based on the SD1329 controller. This OLED is used with
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older versions of the TI/Luminary LM3S8962 Evaluation Kit. Example
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usage:
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boards/arm/tiva/lm3s6965-ek/src
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boards/arm/tiva/lm3s8962-ek/src
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ug-2864ambag01.c. OLED Display Module, UUG-2864AMBAG01, Univision
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Technology Inc. Based on the SH1101A controller. Example usage:
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boards/arm/stm32/stm32f4discovery
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boards/arm/lpc214x/zp214xpa
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ug-9664hswag01.c. OLED Display Module, UG-9664HSWAG01, Univision
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Technology Inc. Based on the SSD1305 controller. Used with the
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LPC Xpresso and Embedded Artists base board. Example usage:
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boards/arm/lpc71xx_40xx/lpcxpresso-lpc1768
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ssd1306.c. OLED Display Modules based on the SSD1306 controllers.
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This includes the UG-2864HSWEG01 and UG2832HSWEG04, both from Univision
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Technology Inc. The latter is used with the OLED1 module that comes
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with the Atmel SAM4l Xplained Pro board. This driver also supports
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Densitron Technologies DD-12864WO-4A which is based on SSD1309 LCD
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controller. Example usage:
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boards/arm/stm32/stm32f4discovery
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boards/arm/sam34/sam4l-xplained
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Segment LCDS (SLCDs):
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---------------------
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pcf8574_lcd_backpack.c: See pcf8574_lcd_backpack_readme.txt.
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Examples: boards/
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==================
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There are additional LCD drivers in the boards/<arch>/<chip>/<board>/src
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directory that support additional LCDs. LCD drivers in the configuration
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directory if they support some differ LCD interface (such as a parallel
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interface) that makes then less re-usable:
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SSD1289 Drivers:
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boards/arm/stm32/hymini-stm32v/src/ssd1289.c. See also
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drivers/lcd/ssd1298.c above.
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boards/arm/stm32/stm32f4discovery/src/stm32_ssd1289.c. This examples
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is the bottom half for the SSD1289 driver at drivers/lcd/ssd1289.c
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boards/arm/stm32/hymini-stm32v/src/ssd1289.c. See also
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drivers/lcd/ssd1298.c above.
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boards/arm/stm32/shenzhou/src/stm32_ssd1289.c
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kwikstik-k40:
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boards/arm/kinetis/kwikstik-k40/src/k40_lcd.c. Don't waste your time.
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This is just a stub.
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HX8346:
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boards/arm/sam34/sam3u-ek/src/sam_lcd.c. The SAM3U-EK development board
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features a TFT/Transmissive color LCD module with touch-screen,
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FTM280C12D, with integrated driver IC HX8346.
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HX8347:
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boards/mips/pic32mx/pic32mx7mmb/src/pic32_mio283qt2.c. This driver is
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for the MI0283QT-2 LCD from Multi-Inno Technology Co., Ltd. This LCD
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is based on the Himax HX8347-D LCD controller.
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ILI93xx and Similar:
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boards/arm/stm32/stm3210e-eval/src/stm32_lcd.c. This driver supports the
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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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boards/arm/stm32/stm3220g-eval/src/stm32_lcd.c and
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boards/stm3240g-eval/src/smt32_lcd.c.
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AM-240320L8TNQW00H (LCD_ILI9320 or LCD_ILI9321) and
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AM-240320D5TOQW01H (LCD_ILI9325)
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boards/arm/stm32/shenzhou/src/stm32_ili93xx.c. Another ILI93xx driver.
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config/arm/sam34/sam4e-ek/src/sam_ili9325.c. ILI9325 driver
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config/arm/sam34/sam4e-ek/src/sam_ili9341.c. ILI9341 driver
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ILI9488
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boards/arm/samv7/samv71-xult/src/sam_ili9488.c
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include/nuttx/lcd/ili9488.h
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R61505U
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boards/arm/stm32/hymini-stm32v/src/stm32_r61505u.c
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Sharp Memory LCD:
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boards/arm/stm32/maple/src/stm32_lcd.c
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OLEDs:
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boards/arm/stm32/stm32f4discovery/src/stm32_ug2864ambag01.c
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boards/arm/stm32/stm32f4discovery/src/stm32_ug2864hsweg01.c
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boards/arm/sam34/sam4l-xplained/src/sam_ug2832hsweg04.c
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boards/arm/lpc214x/zp214xpa/src/lpc2148_ug2864ambag01.c
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LCD controllers built-into the MCU:
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arch/arm/src/lpc17xx_40xx/lpc17_40_lcd.c and
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boards/arm/lpc17xx_40xx/open1788/src/lpc17_40_lcd.c.
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RGB LCD display panel.
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boards/arm/stm32/stm32ldiscovery/src/stm32_lcd.c. 1x6 segment LCD with
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bars using the segment LCD controller built-into the STM32L15X.
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Alphanumeric/segment LCD Displays:
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boards/renesas/m16c/skp16c26/src/m16c_lcd.c. Untested alphanumeric
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LCD driver.
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boards/mips/pic32mx/sure-pic32mx/src/pic32_lcd1602.c. An LCD1602 segment
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LCD. This is a bit-bang version of the driver and appears to
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be fully functional. This version of the LCD1602 driver has
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been verified and is working fine.
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boards/arm/stm32/stm32ldiscovery/src/stm32_lcd.c. 1x6 segment LCD with
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bars using the segment LCD controller built-into the STM32L15X.
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TFT Panel Drivers:
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boards/arm/lpc17xx_40xx/open1788/src/lpc17_40_lcd.c and
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arch/arm/src/lpc17xx_40xx/lpc17_40_lcd.c
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boards/arm/sama5/sama5d3x-ek/src and boards/arm/sama5/sama5d4-ek/src:
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Use
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arch/arm/src/sama5/sam_lcd.c
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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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