diff options
Diffstat (limited to 'nuttx/drivers/lcd/ug-9664hswag01.c')
| -rw-r--r-- | nuttx/drivers/lcd/ug-9664hswag01.c | 1046 |
1 files changed, 0 insertions, 1046 deletions
diff --git a/nuttx/drivers/lcd/ug-9664hswag01.c b/nuttx/drivers/lcd/ug-9664hswag01.c deleted file mode 100644 index 6ef78fca6..000000000 --- a/nuttx/drivers/lcd/ug-9664hswag01.c +++ /dev/null @@ -1,1046 +0,0 @@ -/************************************************************************************** - * drivers/lcd/ug-9664hswag01.c - * Driver for the Univision UG-9664HSWAG01 Display with the Solomon Systech SSD1305 LCD - * controller. - * - * Copyright (C) 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Reference: "Product Specification, OEL Display Module, UG-9664HSWAG01", Univision - * Technology Inc., SAS1-6020-B, January 3, 2008. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - **************************************************************************************/ - -/************************************************************************************** - * Included Files - **************************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <stdint.h> -#include <stdbool.h> -#include <string.h> -#include <errno.h> -#include <debug.h> - -#include <nuttx/arch.h> -#include <nuttx/spi.h> -#include <nuttx/lcd/lcd.h> -#include <nuttx/lcd/ug-9664hswag01.h> - -#include "ssd1305.h" - -/************************************************************************************** - * Pre-processor Definitions - **************************************************************************************/ - -/* Configuration **********************************************************************/ -/* UG-9664HSWAG01 Configuration Settings: - * - * CONFIG_UG9664HSWAG01_SPIMODE - Controls the SPI mode - * CONFIG_UG9664HSWAG01_FREQUENCY - Define to use a different bus frequency - * CONFIG_UG9664HSWAG01_NINTERFACES - Specifies the number of physical - * UG-9664HSWAG01 devices that will be supported. NOTE: At present, this - * must be undefined or defined to be 1. - * CONFIG_UG9664HSWAG01_POWER - * If the hardware supports a controllable OLED a power supply, this - * configuration shold be defined. (See ug_power() below). - * - * Required LCD driver settings: - * CONFIG_LCD_UG9664HSWAG01 - Enable UG-9664HSWAG01 support - * CONFIG_LCD_MAXCONTRAST should be 255, but any value >0 and <=255 will be accepted. - * CONFIG_LCD_MAXPOWER should be 2: 0=off, 1=dim, 2=normal - * - * Required SPI driver settings: - * CONFIG_SPI_CMDDATA - Include support for cmd/data selection. - */ - -/* Verify that all configuration requirements have been met */ - -/* The UG-9664HSWAG01 spec says that is supports SPI mode 0,0 only. However, somtimes - * you need to tinker with these things. - */ - -#ifndef CONFIG_UG9664HSWAG01_SPIMODE -# define CONFIG_UG9664HSWAG01_SPIMODE SPIDEV_MODE0 -#endif - -/* SPI frequency */ - -#ifndef CONFIG_UG9664HSWAG01_FREQUENCY -# define CONFIG_UG9664HSWAG01_FREQUENCY 3500000 -#endif - -/* CONFIG_UG9664HSWAG01_NINTERFACES determines the number of physical interfaces - * that will be supported. - */ - -#ifndef CONFIG_UG9664HSWAG01_NINTERFACES -# define CONFIG_UG9664HSWAG01_NINTERFACES 1 -#endif - -#if CONFIG_UG9664HSWAG01_NINTERFACES != 1 -# warning "Only a single UG-9664HSWAG01 interface is supported" -# undef CONFIG_UG9664HSWAG01_NINTERFACES -# define CONFIG_UG9664HSWAG01_NINTERFACES 1 -#endif - -/* Verbose debug must also be enabled to use the extra OLED debug */ - -#ifndef CONFIG_DEBUG -# undef CONFIG_DEBUG_VERBOSE -#endif - -#ifndef CONFIG_DEBUG_VERBOSE -# undef CONFIG_DEBUG_LCD -#endif - -/* Check contrast selection */ - -#ifndef CONFIG_LCD_MAXCONTRAST -# define CONFIG_LCD_MAXCONTRAST 255 -#endif - -#if CONFIG_LCD_MAXCONTRAST <= 0 || CONFIG_LCD_MAXCONTRAST > 255 -# error "CONFIG_LCD_MAXCONTRAST exceeds supported maximum" -#endif - -#if CONFIG_LCD_MAXCONTRAST < 255 -# warning "Optimal setting of CONFIG_LCD_MAXCONTRAST is 255" -#endif - -/* Check power setting */ - -#if !defined(CONFIG_LCD_MAXPOWER) -# define CONFIG_LCD_MAXPOWER 2 -#endif - -#if CONFIG_LCD_MAXPOWER != 2 -# warning "CONFIG_LCD_MAXPOWER should be 2" -# undef CONFIG_LCD_MAXPOWER -# define CONFIG_LCD_MAXPOWER 2 -#endif - -/* The OLED requires CMD/DATA SPI support */ - -#ifndef CONFIG_SPI_CMDDATA -# error "CONFIG_SPI_CMDDATA must be defined in your NuttX configuration" -#endif - -/* Color is 1bpp monochrome with leftmost column contained in bits 0 */ - -#ifdef CONFIG_NX_DISABLE_1BPP -# warning "1 bit-per-pixel support needed" -#endif - -/* Color Properties *******************************************************************/ -/* The SSD1305 display controller can handle a resolution of 132x64. The OLED - * on the base board is 96x64. - */ - -#define UG_DEV_XRES 132 -#define UG_XOFFSET 18 - -/* Display Resolution */ - -#define UG_XRES 96 -#define UG_YRES 64 - -/* Color depth and format */ - -#define UG_BPP 1 -#define UG_COLORFMT FB_FMT_Y1 - -/* Bytes per logical row and actual device row */ - -#define UG_XSTRIDE (UG_XRES >> 3) /* Pixels arrange "horizontally for user" */ -#define UG_YSTRIDE (UG_YRES >> 3) /* But actual device arrangement is "vertical" */ - -/* The size of the shadow frame buffer */ - -#define UG_FBSIZE (UG_XRES * UG_YSTRIDE) - -/* Bit helpers */ - -#define LS_BIT (1 << 0) -#define MS_BIT (1 << 7) - -/* Debug ******************************************************************************/ - -#ifdef CONFIG_DEBUG_LCD -# define lcddbg(format, arg...) vdbg(format, ##arg) -#else -# define lcddbg(x...) -#endif - -/************************************************************************************** - * Private Type Definition - **************************************************************************************/ - -/* This structure describes the state of this driver */ - -struct ug_dev_s -{ - /* Publically visible device structure */ - - struct lcd_dev_s dev; - - /* Private LCD-specific information follows */ - - FAR struct spi_dev_s *spi; - uint8_t contrast; - uint8_t powered; - - /* The SSD1305 does not support reading from the display memory in SPI mode. - * Since there is 1 BPP and access is byte-by-byte, it is necessary to keep - * a shadow copy of the framebuffer memory. - */ - - uint8_t fb[UG_FBSIZE]; -}; - -/************************************************************************************** - * Private Function Protototypes - **************************************************************************************/ - -/* SPI helpers */ - -#ifdef CONFIG_SPI_OWNBUS -static inline void ug_select(FAR struct spi_dev_s *spi); -static inline void ug_deselect(FAR struct spi_dev_s *spi); -#else -static void ug_select(FAR struct spi_dev_s *spi); -static void ug_deselect(FAR struct spi_dev_s *spi); -#endif - -/* LCD Data Transfer Methods */ - -static int ug_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, - size_t npixels); -static int ug_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, - size_t npixels); - -/* LCD Configuration */ - -static int ug_getvideoinfo(FAR struct lcd_dev_s *dev, - FAR struct fb_videoinfo_s *vinfo); -static int ug_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, - FAR struct lcd_planeinfo_s *pinfo); - -/* LCD RGB Mapping */ - -#ifdef CONFIG_FB_CMAP -# error "RGB color mapping not supported by this driver" -#endif - -/* Cursor Controls */ - -#ifdef CONFIG_FB_HWCURSOR -# error "Cursor control not supported by this driver" -#endif - -/* LCD Specific Controls */ - -static int ug_getpower(struct lcd_dev_s *dev); -static int ug_setpower(struct lcd_dev_s *dev, int power); -static int ug_getcontrast(struct lcd_dev_s *dev); -static int ug_setcontrast(struct lcd_dev_s *dev, unsigned int contrast); - -/* Initialization */ - -static inline void up_clear(FAR struct ug_dev_s *priv); - -/************************************************************************************** - * Private Data - **************************************************************************************/ - -/* This is working memory allocated by the LCD driver for each LCD device - * and for each color plane. This memory will hold one raster line of data. - * The size of the allocated run buffer must therefore be at least - * (bpp * xres / 8). Actual alignment of the buffer must conform to the - * bitwidth of the underlying pixel type. - * - * If there are multiple planes, they may share the same working buffer - * because different planes will not be operate on concurrently. However, - * if there are multiple LCD devices, they must each have unique run buffers. - */ - -static uint8_t g_runbuffer[UG_XSTRIDE+1]; - -/* This structure describes the overall LCD video controller */ - -static const struct fb_videoinfo_s g_videoinfo = -{ - .fmt = UG_COLORFMT, /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */ - .xres = UG_XRES, /* Horizontal resolution in pixel columns */ - .yres = UG_YRES, /* Vertical resolution in pixel rows */ - .nplanes = 1, /* Number of color planes supported */ -}; - -/* This is the standard, NuttX Plane information object */ - -static const struct lcd_planeinfo_s g_planeinfo = -{ - .putrun = ug_putrun, /* Put a run into LCD memory */ - .getrun = ug_getrun, /* Get a run from LCD memory */ - .buffer = (uint8_t*)g_runbuffer, /* Run scratch buffer */ - .bpp = UG_BPP, /* Bits-per-pixel */ -}; - -/* This is the standard, NuttX LCD driver object */ - -static struct ug_dev_s g_ugdev = -{ - .dev = - { - /* LCD Configuration */ - - .getvideoinfo = ug_getvideoinfo, - .getplaneinfo = ug_getplaneinfo, - - /* LCD RGB Mapping -- Not supported */ - /* Cursor Controls -- Not supported */ - - /* LCD Specific Controls */ - - .getpower = ug_getpower, - .setpower = ug_setpower, - .getcontrast = ug_getcontrast, - .setcontrast = ug_setcontrast, - }, -}; - -/************************************************************************************** - * Private Functions - **************************************************************************************/ - -/************************************************************************************** - * Name: ug_powerstring - * - * Description: - * Convert the power setting to a string. - * - **************************************************************************************/ - - -static inline FAR const char *ug_powerstring(uint8_t power) -{ - if (power == UG_POWER_OFF) - { - return "OFF"; - } - else if (power == UG_POWER_DIM) - { - return "DIM"; - } - else if (power == UG_POWER_ON) - { - return "ON"; - } - else - { - return "ERROR"; - } -} - -/************************************************************************************** - * Function: ug_select - * - * Description: - * Select the SPI, locking and re-configuring if necessary - * - * Parameters: - * spi - Reference to the SPI driver structure - * - * Returned Value: - * None - * - * Assumptions: - * - **************************************************************************************/ - -#ifdef CONFIG_SPI_OWNBUS -static inline void ug_select(FAR struct spi_dev_s *spi) -{ - /* We own the SPI bus, so just select the chip */ - - SPI_SELECT(spi, SPIDEV_DISPLAY, true); -} -#else -static void ug_select(FAR struct spi_dev_s *spi) -{ - /* Select UG-9664HSWAG01 chip (locking the SPI bus in case there are multiple - * devices competing for the SPI bus - */ - - SPI_LOCK(spi, true); - SPI_SELECT(spi, SPIDEV_DISPLAY, true); - - /* Now make sure that the SPI bus is configured for the UG-9664HSWAG01 (it - * might have gotten configured for a different device while unlocked) - */ - - SPI_SETMODE(spi, CONFIG_UG9664HSWAG01_SPIMODE); - SPI_SETBITS(spi, 8); -#ifdef CONFIG_UG9664HSWAG01_FREQUENCY - SPI_SETFREQUENCY(spi, CONFIG_UG9664HSWAG01_FREQUENCY); -#endif -} -#endif - -/************************************************************************************** - * Function: ug_deselect - * - * Description: - * De-select the SPI - * - * Parameters: - * spi - Reference to the SPI driver structure - * - * Returned Value: - * None - * - * Assumptions: - * - **************************************************************************************/ - -#ifdef CONFIG_SPI_OWNBUS -static inline void ug_deselect(FAR struct spi_dev_s *spi) -{ - /* We own the SPI bus, so just de-select the chip */ - - SPI_SELECT(spi, SPIDEV_DISPLAY, false); -} -#else -static void ug_deselect(FAR struct spi_dev_s *spi) -{ - /* De-select UG-9664HSWAG01 chip and relinquish the SPI bus. */ - - SPI_SELECT(spi, SPIDEV_DISPLAY, false); - SPI_LOCK(spi, false); -} -#endif - -/************************************************************************************** - * Name: ug_putrun - * - * Description: - * This method can be used to write a partial raster line to the LCD: - * - * row - Starting row to write to (range: 0 <= row < yres) - * col - Starting column to write to (range: 0 <= col <= xres-npixels) - * buffer - The buffer containing the run to be written to the LCD - * npixels - The number of pixels to write to the LCD - * (range: 0 < npixels <= xres-col) - * - **************************************************************************************/ - -static int ug_putrun(fb_coord_t row, fb_coord_t col, FAR const uint8_t *buffer, - size_t npixels) -{ - /* Because of this line of code, we will only be able to support a single UG device */ - - FAR struct ug_dev_s *priv = &g_ugdev; - FAR uint8_t *fbptr; - FAR uint8_t *ptr; - uint8_t devcol; - uint8_t fbmask; - uint8_t page; - uint8_t usrmask; - uint8_t i; - int pixlen; - - gvdbg("row: %d col: %d npixels: %d\n", row, col, npixels); - DEBUGASSERT(buffer); - - /* Clip the run to the display */ - - pixlen = npixels; - if ((unsigned int)col + (unsigned int)pixlen > (unsigned int)UG_XRES) - { - pixlen = (int)UG_XRES - (int)col; - } - - /* Verify that some portion of the run remains on the display */ - - if (pixlen <= 0 || row > UG_YRES) - { - return OK; - } - - /* Get the page number. The range of 64 lines is divided up into eight - * pages of 8 lines each. - */ - - page = row >> 3; - - /* Update the shadow frame buffer memory. First determine the pixel - * position in the frame buffer memory. Pixels are organized like - * this: - * - * --------+---+---+---+---+-...-+-----+ - * Segment | 0 | 1 | 2 | 3 | ... | 131 | - * --------+---+---+---+---+-...-+-----+ - * Bit 0 | | X | | | | | - * Bit 1 | | X | | | | | - * Bit 2 | | X | | | | | - * Bit 3 | | X | | | | | - * Bit 4 | | X | | | | | - * Bit 5 | | X | | | | | - * Bit 6 | | X | | | | | - * Bit 7 | | X | | | | | - * --------+---+---+---+---+-...-+-----+ - * - * So, in order to draw a white, horizontal line, at row 45. we - * would have to modify all of the bytes in page 45/8 = 5. We - * would have to set bit 45%8 = 5 in every byte in the page. - */ - - fbmask = 1 << (row & 7); - fbptr = &priv->fb[page * UG_XRES + col]; - ptr = fbptr; -#ifdef CONFIG_NX_PACKEDMSFIRST - usrmask = MS_BIT; -#else - usrmask = LS_BIT; -#endif - - for (i = 0; i < pixlen; i++) - { - /* Set or clear the corresponding bit */ - - if ((*buffer & usrmask) != 0) - { - *ptr++ |= fbmask; - } - else - { - *ptr++ &= ~fbmask; - } - - /* Inc/Decrement to the next source pixel */ - -#ifdef CONFIG_NX_PACKEDMSFIRST - if (usrmask == LS_BIT) - { - buffer++; - usrmask = MS_BIT; - } - else - { - usrmask >>= 1; - } -#else - if (usrmask == MS_BIT) - { - buffer++; - usrmask = LS_BIT; - } - else - { - usrmask <<= 1; - } -#endif - } - - /* Offset the column position to account for smaller horizontal - * display range. - */ - - devcol = col + UG_XOFFSET; - - /* Select and lock the device */ - - ug_select(priv->spi); - - /* Select command transfer */ - - SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, true); - - /* Set the starting position for the run */ - - (void)SPI_SEND(priv->spi, SSD1305_SETPAGESTART+page); /* Set the page start */ - (void)SPI_SEND(priv->spi, SSD1305_SETCOLL + (devcol & 0x0f)); /* Set the low column */ - (void)SPI_SEND(priv->spi, SSD1305_SETCOLH + (devcol >> 4)); /* Set the high column */ - - /* Select data transfer */ - - SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, false); - - /* Then transfer all of the data */ - - (void)SPI_SNDBLOCK(priv->spi, fbptr, pixlen); - - /* Unlock and de-select the device */ - - ug_deselect(priv->spi); - return OK; -} - -/************************************************************************************** - * Name: ug_getrun - * - * Description: - * This method can be used to read a partial raster line from the LCD: - * - * row - Starting row to read from (range: 0 <= row < yres) - * col - Starting column to read read (range: 0 <= col <= xres-npixels) - * buffer - The buffer in which to return the run read from the LCD - * npixels - The number of pixels to read from the LCD - * (range: 0 < npixels <= xres-col) - * - **************************************************************************************/ - -static int ug_getrun(fb_coord_t row, fb_coord_t col, FAR uint8_t *buffer, - size_t npixels) -{ - /* Because of this line of code, we will only be able to support a single UG device */ - - FAR struct ug_dev_s *priv = &g_ugdev; - FAR uint8_t *fbptr; - uint8_t page; - uint8_t fbmask; - uint8_t usrmask; - uint8_t i; - int pixlen; - - gvdbg("row: %d col: %d npixels: %d\n", row, col, npixels); - DEBUGASSERT(buffer); - - /* Clip the run to the display */ - - pixlen = npixels; - if ((unsigned int)col + (unsigned int)pixlen > (unsigned int)UG_XRES) - { - pixlen = (int)UG_XRES - (int)col; - } - - /* Verify that some portion of the run is actually the display */ - - if (pixlen <= 0 || row > UG_YRES) - { - return -EINVAL; - } - - /* Then transfer the display data from the shadow frame buffer memory */ - /* Get the page number. The range of 64 lines is divided up into eight - * pages of 8 lines each. - */ - - page = row >> 3; - - /* Update the shadow frame buffer memory. First determine the pixel - * position in the frame buffer memory. Pixels are organized like - * this: - * - * --------+---+---+---+---+-...-+-----+ - * Segment | 0 | 1 | 2 | 3 | ... | 131 | - * --------+---+---+---+---+-...-+-----+ - * Bit 0 | | X | | | | | - * Bit 1 | | X | | | | | - * Bit 2 | | X | | | | | - * Bit 3 | | X | | | | | - * Bit 4 | | X | | | | | - * Bit 5 | | X | | | | | - * Bit 6 | | X | | | | | - * Bit 7 | | X | | | | | - * --------+---+---+---+---+-...-+-----+ - * - * So, in order to draw a white, horizontal line, at row 45. we - * would have to modify all of the bytes in page 45/8 = 5. We - * would have to set bit 45%8 = 5 in every byte in the page. - */ - - fbmask = 1 << (row & 7); - fbptr = &priv->fb[page * UG_XRES + col]; -#ifdef CONFIG_NX_PACKEDMSFIRST - usrmask = MS_BIT; -#else - usrmask = LS_BIT; -#endif - - *buffer = 0; - for (i = 0; i < pixlen; i++) - { - /* Set or clear the corresponding bit */ - - uint8_t byte = *fbptr++; - if ((byte & fbmask) != 0) - { - *buffer |= usrmask; - } - - /* Inc/Decrement to the next destination pixel. Hmmmm. It looks like - * this logic could write past the end of the user buffer. Revisit - * this! - */ - -#ifdef CONFIG_NX_PACKEDMSFIRST - if (usrmask == LS_BIT) - { - buffer++; - *buffer = 0; - usrmask = MS_BIT; - } - else - { - usrmask >>= 1; - } -#else - if (usrmask == MS_BIT) - { - buffer++; - *buffer = 0; - usrmask = LS_BIT; - } - else - { - usrmask <<= 1; - } -#endif - } - - return OK; -} - -/************************************************************************************** - * Name: ug_getvideoinfo - * - * Description: - * Get information about the LCD video controller configuration. - * - **************************************************************************************/ - -static int ug_getvideoinfo(FAR struct lcd_dev_s *dev, - FAR struct fb_videoinfo_s *vinfo) -{ - DEBUGASSERT(dev && vinfo); - gvdbg("fmt: %d xres: %d yres: %d nplanes: %d\n", - g_videoinfo.fmt, g_videoinfo.xres, g_videoinfo.yres, g_videoinfo.nplanes); - memcpy(vinfo, &g_videoinfo, sizeof(struct fb_videoinfo_s)); - return OK; -} - -/************************************************************************************** - * Name: ug_getplaneinfo - * - * Description: - * Get information about the configuration of each LCD color plane. - * - **************************************************************************************/ - -static int ug_getplaneinfo(FAR struct lcd_dev_s *dev, unsigned int planeno, - FAR struct lcd_planeinfo_s *pinfo) -{ - DEBUGASSERT(dev && pinfo && planeno == 0); - gvdbg("planeno: %d bpp: %d\n", planeno, g_planeinfo.bpp); - memcpy(pinfo, &g_planeinfo, sizeof(struct lcd_planeinfo_s)); - return OK; -} - -/************************************************************************************** - * Name: ug_getpower - * - * Description: - * Get the LCD panel power status (0: full off - CONFIG_LCD_MAXPOWER: full on). On - * backlit LCDs, this setting may correspond to the backlight setting. - * - **************************************************************************************/ - -static int ug_getpower(struct lcd_dev_s *dev) -{ - struct ug_dev_s *priv = (struct ug_dev_s *)dev; - DEBUGASSERT(priv); - gvdbg("powered: %s\n", ug_powerstring(priv->powered)); - return priv->powered; -} - -/************************************************************************************** - * Name: ug_setpower - * - * Description: - * Enable/disable LCD panel power (0: full off - CONFIG_LCD_MAXPOWER: full on). On - * backlit LCDs, this setting may correspond to the backlight setting. - * - **************************************************************************************/ - -static int ug_setpower(struct lcd_dev_s *dev, int power) -{ - struct ug_dev_s *priv = (struct ug_dev_s *)dev; - - DEBUGASSERT(priv && (unsigned)power <= CONFIG_LCD_MAXPOWER); - gvdbg("power: %s powered: %s\n", - ug_powerstring(power), ug_powerstring(priv->powered)); - - /* Select and lock the device */ - - ug_select(priv->spi); - if (power <= UG_POWER_OFF) - { - /* Turn the display off */ - - (void)SPI_SEND(priv->spi, SSD1305_DISPOFF); /* Display off */ - - /* Remove power to the device */ - - ug_power(0, false); - priv->powered = UG_POWER_OFF; - } - else - { - /* Turn the display on, dim or normal */ - - if (power == UG_POWER_DIM) - { - (void)SPI_SEND(priv->spi, SSD1305_DISPONDIM); /* Display on, dim mode */ - } - else /* if (power > UG_POWER_DIM) */ - { - (void)SPI_SEND(priv->spi, SSD1305_DISPON); /* Display on, normal mode */ - power = UG_POWER_ON; - } - (void)SPI_SEND(priv->spi, SSD1305_DISPRAM); /* Resume to RAM content display */ - - /* Restore power to the device */ - - ug_power(0, true); - priv->powered = power; - } - ug_deselect(priv->spi); - - return OK; -} - -/************************************************************************************** - * Name: ug_getcontrast - * - * Description: - * Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST). - * - **************************************************************************************/ - -static int ug_getcontrast(struct lcd_dev_s *dev) -{ - struct ug_dev_s *priv = (struct ug_dev_s *)dev; - DEBUGASSERT(priv); - return (int)priv->contrast; -} - -/************************************************************************************** - * Name: ug_setcontrast - * - * Description: - * Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST). - * - **************************************************************************************/ - -static int ug_setcontrast(struct lcd_dev_s *dev, unsigned int contrast) -{ - struct ug_dev_s *priv = (struct ug_dev_s *)dev; - - gvdbg("contrast: %d\n", contrast); - DEBUGASSERT(priv); - - if (contrast > 255) - { - return -EINVAL; - } - - /* Select and lock the device */ - - ug_select(priv->spi); - - /* Select command transfer */ - - SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY, true); - - /* Set the contrast */ - - (void)SPI_SEND(priv->spi, SSD1305_SETCONTRAST); /* Set contrast control register */ - (void)SPI_SEND(priv->spi, contrast); /* Data 1: Set 1 of 256 contrast steps */ - priv->contrast = contrast; - - /* Unlock and de-select the device */ - - ug_deselect(priv->spi); - return OK; -} - -/************************************************************************************** - * Name: up_clear - * - * Description: - * Clear the display. - * - **************************************************************************************/ - -static inline void up_clear(FAR struct ug_dev_s *priv) -{ - FAR struct spi_dev_s *spi = priv->spi; - int page; - int i; - - /* Clear the framebuffer */ - - memset(priv->fb, UG_Y1_BLACK, UG_FBSIZE); - - /* Select and lock the device */ - - ug_select(priv->spi); - - /* Go through all 8 pages */ - - for (page = 0, i = 0; i < 8; i++) - { - /* Select command transfer */ - - SPI_CMDDATA(spi, SPIDEV_DISPLAY, true); - - /* Set the starting position for the run */ - - (void)SPI_SEND(priv->spi, SSD1305_SETPAGESTART+i); - (void)SPI_SEND(priv->spi, SSD1305_SETCOLL + (UG_XOFFSET & 0x0f)); - (void)SPI_SEND(priv->spi, SSD1305_SETCOLH + (UG_XOFFSET >> 4)); - - /* Select data transfer */ - - SPI_CMDDATA(spi, SPIDEV_DISPLAY, false); - - /* Then transfer all 96 columns of data */ - - (void)SPI_SNDBLOCK(priv->spi, &priv->fb[page * UG_XRES], UG_XRES); - } - - /* Unlock and de-select the device */ - - ug_deselect(spi); -} - -/************************************************************************************** - * Public Functions - **************************************************************************************/ - -/************************************************************************************** - * Name: ug_initialize - * - * Description: - * Initialize the UG-9664HSWAG01 video hardware. The initial state of the - * OLED is fully initialized, display memory cleared, and the OLED ready to - * use, but with the power setting at 0 (full off == sleep mode). - * - * Input Parameters: - * - * spi - A reference to the SPI driver instance. - * devno - A value in the range of 0 through CONFIG_UG9664HSWAG01_NINTERFACES-1. - * This allows support for multiple OLED devices. - * - * Returned Value: - * - * On success, this function returns a reference to the LCD object for the specified - * OLED. NULL is returned on any failure. - * - **************************************************************************************/ - -FAR struct lcd_dev_s *ug_initialize(FAR struct spi_dev_s *spi, unsigned int devno) -{ - /* Configure and enable LCD */ - - FAR struct ug_dev_s *priv = &g_ugdev; - - gvdbg("Initializing\n"); - DEBUGASSERT(spi && devno == 0); - - /* Save the reference to the SPI device */ - - priv->spi = spi; - - /* Select and lock the device */ - - ug_select(spi); - - /* Make sure that the OLED off */ - - ug_power(0, false); - - /* Select command transfer */ - - SPI_CMDDATA(spi, SPIDEV_DISPLAY, true); - - /* Configure the device */ - - (void)SPI_SEND(spi, SSD1305_SETCOLL + 2); /* Set low column address */ - (void)SPI_SEND(spi, SSD1305_SETCOLH + 2); /* Set high column address */ - (void)SPI_SEND(spi, SSD1305_SETSTARTLINE+0); /* Display start set */ - (void)SPI_SEND(spi, SSD1305_SCROLL_STOP); /* Stop horizontal scroll */ - (void)SPI_SEND(spi, SSD1305_SETCONTRAST); /* Set contrast control register */ - (void)SPI_SEND(spi, 0x32); /* Data 1: Set 1 of 256 contrast steps */ - (void)SPI_SEND(spi, SSD1305_SETBRIGHTNESS); /* Brightness for color bank */ - (void)SPI_SEND(spi, 0x80); /* Data 1: Set 1 of 256 contrast steps */ - (void)SPI_SEND(spi, SSD1305_MAPCOL131); /* Set segment re-map */ - (void)SPI_SEND(spi, SSD1305_DISPNORMAL); /* Set normal display */ -/*(void)SPI_SEND(spi, SSD1305_DISPINVERTED); Set inverse display */ - (void)SPI_SEND(spi, SSD1305_SETMUX); /* Set multiplex ratio */ - (void)SPI_SEND(spi, 0x3f); /* Data 1: MUX ratio -1: 15-63 */ - (void)SPI_SEND(spi, SSD1305_SETOFFSET); /* Set display offset */ - (void)SPI_SEND(spi, 0x40); /* Data 1: Vertical shift by COM: 0-63 */ - (void)SPI_SEND(spi, SSD1305_MSTRCONFIG); /* Set dc-dc on/off */ - (void)SPI_SEND(spi, SSD1305_MSTRCONFIG_EXTVCC); /* Data 1: Select external Vcc */ - (void)SPI_SEND(spi, SSD1305_SETCOMREMAPPED); /* Set com output scan direction */ - (void)SPI_SEND(spi, SSD1305_SETDCLK); /* Set display clock divide - * ratio/oscillator/frequency */ - (void)SPI_SEND(spi, 15 << SSD1305_DCLKFREQ_SHIFT | 0 << SSD1305_DCLKDIV_SHIFT); - (void)SPI_SEND(spi, SSD1305_SETCOLORMODE); /* Set area color mode on/off & low power - * display mode */ - (void)SPI_SEND(spi, SSD1305_COLORMODE_MONO | SSD1305_POWERMODE_LOW); - (void)SPI_SEND(spi, SSD1305_SETPRECHARGE); /* Set pre-charge period */ - (void)SPI_SEND(spi, 15 << SSD1305_PHASE2_SHIFT | 1 << SSD1305_PHASE1_SHIFT); - (void)SPI_SEND(spi, SSD1305_SETCOMCONFIG); /* Set COM configuration */ - (void)SPI_SEND(spi, SSD1305_COMCONFIG_ALT); /* Data 1, Bit 4: 1=Alternative COM pin configuration */ - (void)SPI_SEND(spi, SSD1305_SETVCOMHDESEL); /* Set VCOMH deselect level */ - (void)SPI_SEND(spi, SSD1305_VCOMH_x7p7); /* Data 1: ~0.77 x Vcc */ - (void)SPI_SEND(spi, SSD1305_SETLUT); /* Set look up table for area color */ - (void)SPI_SEND(spi, 0x3f); /* Data 1: Pulse width: 31-63 */ - (void)SPI_SEND(spi, 0x3f); /* Data 2: Color A: 31-63 */ - (void)SPI_SEND(spi, 0x3f); /* Data 3: Color B: 31-63 */ - (void)SPI_SEND(spi, 0x3f); /* Data 4: Color C: 31-63 */ - (void)SPI_SEND(spi, SSD1305_DISPON); /* Display on, normal mode */ - (void)SPI_SEND(spi, SSD1305_DISPRAM); /* Resume to RAM content display */ - - /* Let go of the SPI lock and de-select the device */ - - ug_deselect(spi); - - /* Clear the framebuffer */ - - up_mdelay(100); - up_clear(priv); - return &priv->dev; -} |