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- /****************************************************************************
- * drivers/lcd/ug-2864ambag01.c
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership. The
- * ASF licenses this file to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the
- * License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- ****************************************************************************/
- /* Driver for Univision UG-2864AMBAG01 OLED display (with SH1101A controller)
- * in SPI mode
- *
- * References:
- * 1. Product Specification (Preliminary),
- * Part Name: OEL Display Module, Part ID:
- * UG-2864AMBAG01, Doc No: SASI-9015-A, Univision Technology Inc.
- * 2. SH1101A, 132 X 64 Dot Matrix OLED/PLED,
- * Preliminary Segment/Common Driver with
- * Controller, Sino Wealth
- */
- /****************************************************************************
- * Device memory organization:
- *
- * +----------------------------+
- * | Column |
- * --------+----+---+---+---+-...-+-----+
- * Page | 0 | 1 | 2 | 3 | ... | 131 |
- * --------+----+---+---+---+-...-+-----+
- * Page 0 | D0 | X | | | | |
- * | D1 | X | | | | |
- * | D2 | X | | | | |
- * | D3 | X | | | | |
- * | D4 | X | | | | |
- * | D5 | X | | | | |
- * | D6 | X | | | | |
- * | D7 | X | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 1 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 2 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 3 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 4 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 5 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 6 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- * Page 7 | | | | | | |
- * --------+----+---+---+---+-...-+-----+
- *
- * ----------------------------------+--------------------------------------
- * Landscape Display: | Reverse Landscape Display:
- * --------+-----------------------+ | -------+---------------------------+
- * | Column | | | Column |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 0 | 0 | 1 | 2 | | 131 | | Page 7 | 131 | 130 | 129 | | 0 |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 1 | V | | Page 6 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 2 | V | | Page 5 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 3 | V | | Page 4 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 4 | V | | Page 3 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 5 | V | | Page 2 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 6 | V | | Page 1 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * Page 7 | V | | Page 0 | ^ |
- * --------+---+---+---+-...-+-----+ | -------+-----+-----+-----+-...-+---+
- * ----------------------------------+--------------------------------------
- *
- * ----------------------------------+--------------------------------------
- * Portrait Display: | Reverse Portrait Display:
- * -----------+---------------------+| -----------+---------------------+
- * | Page || | Page |
- * -----------+---+---+---+-...-+---+| -----------+---+---+---+-...-+---+
- * Column 0 | 0 | 1 | 2 | | 7 || Column 131 | 7 | 6 | 5 | | 0 |
- * -----------+---+---+---+-...-+---+| -----------+---+---+---+-...-+---+
- * Column 1 | > > > > > || Column 130 | |
- * -----------+---+---+---+-...-+---+| -----------+---+---+---+-...-+---+
- * Column 2 | || Column 129 | |
- * -----------+---+---+---+-...-+---+| -----------+---+---+---+-...-+---+
- * ... | || ... | |
- * -----------+---+---+---+-...-+---+| -----------+---+---+---+-...-+---+
- * Column 131 | || Column 0 | < < < < < |
- * -----------+---+---+---+-...-+---+| -----------+---+---+---+-...-+---+
- * ----------------------------------+--------------------------------------
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <sys/types.h>
- #include <stdint.h>
- #include <stdbool.h>
- #include <string.h>
- #include <assert.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/arch.h>
- #include <nuttx/spi/spi.h>
- #include <nuttx/lcd/lcd.h>
- #include <nuttx/lcd/ug-2864ambag01.h>
- #include <arch/irq.h>
- #ifdef CONFIG_LCD_UG2864AMBAG01
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /* Configuration ************************************************************/
- /* Limitations of the current configuration that I hope to fix someday */
- #if CONFIG_UG2864AMBAG01_NINTERFACES != 1
- # warning "This implementation supports only a single OLED device"
- # undef CONFIG_UG2864AMBAG01_NINTERFACES
- # define CONFIG_UG2864AMBAG01_NINTERFACES 1
- #endif
- #if defined(CONFIG_LCD_PORTRAIT) || defined(CONFIG_LCD_RPORTRAIT)
- # warning "No support yet for portrait modes"
- # define CONFIG_LCD_LANDSCAPE 1
- # undef CONFIG_LCD_PORTRAIT
- # undef CONFIG_LCD_RLANDSCAPE
- # undef CONFIG_LCD_RPORTRAIT
- #endif
- /* SH1101A Commands *********************************************************/
- #define SH1101A_SETCOLL(ad) (0x00 | ((ad) & 0x0f)) /* Set Lower Column Address: (00h - 0fh) */
- #define SH1101A_SETCOLH(ad) (0x10 | ((ad) & 0x0f)) /* Set Higher Column Address: (10h - 1fh) */
- #define SH1101A_STARTLINE(ln) (0x40 | ((ln) & 0x3f)) /* Set Display Start Line: (40h - 7fh) */
- #define SH1101A_CONTRAST_MODE (0x81) /* Set Contrast Control Register: (Double Bytes Command) */
- # define SH1101A_CONTRAST(c) (c)
- #define SH1101A_SEGREMAP(m) (0xa0 | ((m) & 0x01)) /* Set Segment Re-map: (a0h - a1h) */
- # define SH1101A_REMAPRIGHT SH1101A_SEGREMAP(0) /* Right rotation */
- # define SH1101A_REMAPPLEFT SH1101A_SEGREMAP(1) /* Left rotation */
- #define SH1101A_EDISPOFFON(s) (0xa4 | ((s) & 0x01)) /* Set Entire Display OFF/ON: (a4h - a5h) */
- # define SH1101A_EDISPOFF SH1101A_EDISPOFFON(0) /* Display off */
- # define SH1101A_EDISPON SH1101A_EDISPOFFON(1) /* Display on */
- #define SH1101A_NORMREV(s) (0xa6 | ((s) & 0x01)) /* Set Normal/Reverse Display: (a6h -a7h) */
- # define SH1101A_NORMAL SH1101A_NORMREV(0) /* Normal display */
- # define SH1101A_REVERSE SH1101A_NORMREV(1) /* Reverse display */
- #define SH1101A_MRATIO_MODE (0xa8) /* Set Multiplex Ration: (Double Bytes Command) */
- # define SH1101A_MRATIO(d) ((d) & 0x3f)
- #define SH1101A_DCDC_MODE (0xad) /* Set DC-DC OFF/ON: (Double Bytes Command) */
- # define SH1101A_DCDC_OFF (0x8a)
- # define SH1101A_DCDC_ON (0x8b)
- #define SH1101A_DISPOFFON(s) (0xae | ((s) & 0x01)) /* Display OFF/ON: (aeh - afh) */
- # define SH1101A_DISPOFF SH1101A_DISPOFFON(0) /* Display off */
- # define SH1101A_DISPON SH1101A_DISPOFFON(1) /* Display on */
- #define SH1101A_PAGEADDR(a) (0xb0 | ((a) & 0x0f)) /* Set Page Address: (b0h - b7h) */
- #define SH1101A_SCANDIR(d) (0xc0 | ((d) & 0x08)) /* Set Common Output Scan Direction: (c0h - c8h) */
- # define SH1101A_SCANFROMCOM0 SH1101A_SCANDIR(0x00) /* Scan from COM[0] to COM[n-1]*/
- # define SH1101A_SCANTOCOM0 SH1101A_SCANDIR(0x08) /* Scan from COM[n-1] to COM[0] */
- #define SH1101A_DISPOFFS_MODE (0xd3) /* Set Display Offset: (Double Bytes Command) */
- # define SH1101A_DISPOFFS(o) ((o) & 0x3f)
- #define SH1101A_CLKDIV_SET (0xd5) /* Set Display Clock Divide Ratio/Oscillator Frequency: (Double Bytes Command) */
- # define SH1101A_CLKDIV(f,d) ((((f) & 0x0f) << 4) | ((d) & 0x0f))
- #define SH1101A_CHRGPER_SET (0xd9) /* Set Dis-charge/Pre-charge Period: (Double Bytes Command) */
- # define SH1101A_CHRGPER(d,p) ((((d) & 0x0f) << 4) | ((p) & 0x0f))
- #define SH1101A_CMNPAD_CONFIG (0xda) /* Set Common pads hardware configuration: (Double Bytes Command) */
- #define SH1101A_CMNPAD(c) ((0x02) | ((c) & 0x10))
- #define SH1101A_VCOM_SET (0xdb) /* Set VCOM Deselect Level: (Double Bytes Command) */
- # define SH1101A_VCOM(v) (v)
- #define SH1101A_RMWSTART (0xe0) /* Read-Modify-Write: (e0h) */
- #define SH1101A_NOP (0xe3) /* NOP: (e3h) */
- #define SH1101A_END (0xee) /* End: (eeh) */
- #define SH1101A_WRDATA(d) (d) /* Write Display Data */
- #define SH1101A_STATUS_BUSY (0x80) /* Read Status */
- #define SH1101A_STATUS_ONOFF (0x40)
- #define SH1101A_RDDATA(d) (d) /* Read Display Data */
- /* Color Properties *********************************************************/
- /* Display Resolution
- *
- * The SH1101A display controller can handle a resolution of 132x64.
- * The UG-2864AMBAG01 on the base board is 128x64.
- */
- #define UG2864AMBAG01_DEV_XRES 128 /* Only 128 of 131 columns used */
- #define UG2864AMBAG01_DEV_YRES 64 /* 8 pages each 8 rows */
- #define UG2864AMBAG01_DEV_XOFFSET 2 /* Offset to logical column 0 */
- #define UG2864AMBAG01_DEV_PAGES 8 /* 8 pages */
- #if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE)
- # define UG2864AMBAG01_XRES UG2864AMBAG01_DEV_XRES
- # define UG2864AMBAG01_YRES UG2864AMBAG01_DEV_YRES
- #else
- # define UG2864AMBAG01_XRES UG2864AMBAG01_DEV_YRES
- # define UG2864AMBAG01_YRES UG2864AMBAG01_DEV_XRES
- #endif
- /* Color depth and format */
- #define UG2864AMBAG01_BPP 1
- #define UG2864AMBAG01_COLORFMT FB_FMT_Y1
- /* Bytes per logical row and actual device row */
- #define UG2864AMBAG01_XSTRIDE (UG2864AMBAG01_XRES >> 3)
- #define UG2864AMBAG01_YSTRIDE (UG2864AMBAG01_YRES >> 3)
- /* Default contrast */
- #define UG2864AMBAG01_CONTRAST (128)
- /* The size of the shadow frame buffer or one row buffer.
- *
- * Frame buffer size: 128 columns x 64 rows / 8 bits-per-pixel
- * Row size: 128 columns x 8 rows-per-page / 8 bits-per-pixel
- */
- #define UG2864AMBAG01_FBSIZE (UG2864AMBAG01_XSTRIDE * UG2864AMBAG01_YRES)
- #define UG2864AMBAG01_ROWSIZE (UG2864AMBAG01_XSTRIDE)
- /* Orientation */
- #if defined(CONFIG_LCD_LANDSCAPE)
- # undef UG2864AMBAG01_DEV_REVERSEX
- # undef UG2864AMBAG01_DEV_REVERSEY
- #elif defined(CONFIG_LCD_RLANDSCAPE)
- # define UG2864AMBAG01_DEV_REVERSEX 1
- # define UG2864AMBAG01_DEV_REVERSEY 1
- #endif
- /* Bit helpers */
- #define LS_BIT (1 << 0)
- #define MS_BIT (1 << 7)
- /****************************************************************************
- * Private Type Definition
- ****************************************************************************/
- /* This structure describes the state of this driver */
- struct ug2864ambag01_dev_s
- {
- struct lcd_dev_s dev; /* Publicly visible device structure */
- /* Private LCD-specific information follows */
- FAR struct spi_dev_s *spi; /* Cached SPI device reference */
- uint8_t contrast; /* Current contrast setting */
- bool on; /* true: display is on */
- /* The SH1101A 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. At 128x64, this amounts
- * to 1KB.
- */
- uint8_t fb[UG2864AMBAG01_FBSIZE];
- };
- /****************************************************************************
- * Private Function Protototypes
- ****************************************************************************/
- /* Low-level SPI helpers */
- static void ug2864ambag01_lock(FAR struct spi_dev_s *spi);
- static void ug2864ambag01_unlock(FAR struct spi_dev_s *spi);
- /* LCD Data Transfer Methods */
- static int ug2864ambag01_putrun(fb_coord_t row, fb_coord_t col,
- FAR const uint8_t *buffer, size_t npixels);
- static int ug2864ambag01_getrun(fb_coord_t row, fb_coord_t col,
- FAR uint8_t *buffer,
- size_t npixels);
- /* LCD Configuration */
- static int ug2864ambag01_getvideoinfo(FAR struct lcd_dev_s *dev,
- FAR struct fb_videoinfo_s *vinfo);
- static int ug2864ambag01_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 ug2864ambag01_getpower(struct lcd_dev_s *dev);
- static int ug2864ambag01_setpower(struct lcd_dev_s *dev, int power);
- static int ug2864ambag01_getcontrast(struct lcd_dev_s *dev);
- static int ug2864ambag01_setcontrast(struct lcd_dev_s *dev,
- unsigned int contrast);
- /****************************************************************************
- * 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[UG2864AMBAG01_ROWSIZE];
- /* This structure describes the overall LCD video controller */
- static const struct fb_videoinfo_s g_videoinfo =
- {
- .fmt = UG2864AMBAG01_COLORFMT, /* Color format: RGB16-565: RRRR RGGG GGGB BBBB */
- .xres = UG2864AMBAG01_XRES, /* Horizontal resolution in pixel columns */
- .yres = UG2864AMBAG01_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 = ug2864ambag01_putrun, /* Put a run into LCD memory */
- .getrun = ug2864ambag01_getrun, /* Get a run from LCD memory */
- .buffer = (FAR uint8_t *)g_runbuffer, /* Run scratch buffer */
- .bpp = UG2864AMBAG01_BPP, /* Bits-per-pixel */
- };
- /* This is the OLED driver instance
- * (only a single device is supported for now)
- */
- static struct ug2864ambag01_dev_s g_oleddev =
- {
- .dev =
- {
- /* LCD Configuration */
- .getvideoinfo = ug2864ambag01_getvideoinfo,
- .getplaneinfo = ug2864ambag01_getplaneinfo,
- /* LCD RGB Mapping -- Not supported */
- /* Cursor Controls -- Not supported */
- /* LCD Specific Controls */
- .getpower = ug2864ambag01_getpower,
- .setpower = ug2864ambag01_setpower,
- .getcontrast = ug2864ambag01_getcontrast,
- .setcontrast = ug2864ambag01_setcontrast,
- },
- };
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: ug2864ambag01_lock
- *
- * Description:
- * Select the SPI, locking and re-configuring if necessary
- *
- * Input Parameters:
- * spi - Reference to the SPI driver structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
- static inline void ug2864ambag01_lock(FAR struct spi_dev_s *spi)
- {
- /* Lock the SPI bus if there are multiple devices competing for the SPI
- * bus.
- */
- SPI_LOCK(spi, true);
- /* Now make sure that the SPI bus is configured for the UG-2864AMBAG01 (it
- * might have gotten configured for a different device while unlocked)
- */
- SPI_SETMODE(spi, CONFIG_UG2864AMBAG01_SPIMODE);
- SPI_SETBITS(spi, 8);
- SPI_HWFEATURES(spi, 0);
- SPI_SETFREQUENCY(spi, CONFIG_UG2864AMBAG01_FREQUENCY);
- }
- /****************************************************************************
- * Name: ug2864ambag01_unlock
- *
- * Description:
- * De-select the SPI
- *
- * Input Parameters:
- * spi - Reference to the SPI driver structure
- *
- * Returned Value:
- * None
- *
- * Assumptions:
- *
- ****************************************************************************/
- static inline void ug2864ambag01_unlock(FAR struct spi_dev_s *spi)
- {
- /* De-select UG-2864AMBAG01 chip and relinquish the SPI bus. */
- SPI_LOCK(spi, false);
- }
- /****************************************************************************
- * Name: ug2864ambag01_putrun
- *
- * Description:
- * This method can be used to write a partial raster line to the LCD.
- *
- * Input Parameters:
- * 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)
- *
- ****************************************************************************/
- #if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE)
- static int ug2864ambag01_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 ug2864ambag01_dev_s *priv =
- (FAR struct ug2864ambag01_dev_s *)&g_oleddev;
- FAR uint8_t *fbptr;
- FAR uint8_t *ptr;
- uint8_t devcol;
- uint8_t fbmask;
- uint8_t page;
- uint8_t usrmask;
- int pixlen;
- uint8_t i;
- lcdinfo("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)UG2864AMBAG01_XRES)
- {
- pixlen = (int)UG2864AMBAG01_XRES - (int)col;
- }
- /* Verify that some portion of the run remains on the display */
- if (pixlen <= 0 || row > UG2864AMBAG01_YRES)
- {
- return OK;
- }
- /* Perform coordinate conversion for reverse landscape mode.
- * If the rows are reversed then rows are are a mirror reflection of
- * top to bottom.
- */
- #ifdef UG2864AMBAG01_DEV_REVERSEY
- row = (UG2864AMBAG01_DEV_YRES - 1) - row;
- #endif
- /* If the column is switched then the start of the run is the mirror of
- * the end of the run.
- *
- * col+pixlen-1
- * col |
- * 0 | | XRES
- * . S>>>>>>E .
- * . E<<<<<<S .
- * | |
- * | `-(XRES-1)-col
- * ` (XRES-1)-col-(pixlen-1)
- */
- #ifdef UG2864AMBAG01_DEV_REVERSEX
- col = (UG2864AMBAG01_DEV_XRES - 1) - col;
- col -= (pixlen - 1);
- #endif
- /* 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 |
- * --------+---+---+---+---+-...-+-----+
- * D0 | | X | | | | |
- * D1 | | X | | | | |
- * D2 | | X | | | | |
- * D3 | | X | | | | |
- * D4 | | X | | | | |
- * D5 | | X | | | | |
- * D6 | | X | | | | |
- * D7 | | 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 * UG2864AMBAG01_XRES + col];
- #ifdef UG2864AMBAG01_DEV_REVERSEX
- ptr = fbptr + (pixlen - 1);
- #else
- ptr = fbptr;
- #endif
- #ifdef CONFIG_LCD_PACKEDMSFIRST
- usrmask = MS_BIT;
- #else
- usrmask = LS_BIT;
- #endif
- for (i = 0; i < pixlen; i++)
- {
- /* Set or clear the corresponding bit */
- #ifdef UG2864AMBAG01_DEV_REVERSEX
- if ((*buffer & usrmask) != 0)
- {
- *ptr-- |= fbmask;
- }
- else
- {
- *ptr-- &= ~fbmask;
- }
- #else
- if ((*buffer & usrmask) != 0)
- {
- *ptr++ |= fbmask;
- }
- else
- {
- *ptr++ &= ~fbmask;
- }
- #endif
- /* Inc/Decrement to the next source pixel */
- #ifdef CONFIG_LCD_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 + UG2864AMBAG01_DEV_XOFFSET;
- /* Lock and select device */
- ug2864ambag01_lock(priv->spi);
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), true);
- /* Select command transfer */
- SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY(0), true);
- /* Set the starting position for the run */
- /* Set the column address to the XOFFSET value */
- SPI_SEND(priv->spi, SH1101A_SETCOLL(devcol & 0x0f));
- SPI_SEND(priv->spi, SH1101A_SETCOLH(devcol >> 4));
- /* Set the page address */
- SPI_SEND(priv->spi, SH1101A_PAGEADDR(page));
- /* Select data transfer */
- SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY(0), false);
- /* Then transfer all of the data */
- SPI_SNDBLOCK(priv->spi, fbptr, pixlen);
- /* De-select and unlock the device */
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), false);
- ug2864ambag01_unlock(priv->spi);
- return OK;
- }
- #else
- # error "Configuration not implemented"
- #endif
- /****************************************************************************
- * Name: ug2864ambag01_getrun
- *
- * Description:
- * This method can be used to read a partial raster line from the LCD.
- *
- * Description:
- * This method can be used to write a partial raster line to 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)
- *
- ****************************************************************************/
- #if defined(CONFIG_LCD_LANDSCAPE) || defined(CONFIG_LCD_RLANDSCAPE)
- static int ug2864ambag01_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 ug2864ambag01_dev_s *priv = &g_oleddev;
- FAR uint8_t *fbptr;
- uint8_t page;
- uint8_t fbmask;
- uint8_t usrmask;
- int pixlen;
- uint8_t i;
- lcdinfo("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)UG2864AMBAG01_XRES)
- {
- pixlen = (int)UG2864AMBAG01_XRES - (int)col;
- }
- /* Verify that some portion of the run is actually the display */
- if (pixlen <= 0 || row > UG2864AMBAG01_YRES)
- {
- return -EINVAL;
- }
- /* Perform coordinate conversion for reverse landscape mode.
- * If the rows are reversed then rows are are a mirror reflection of
- * top to bottom.
- */
- #ifdef UG2864AMBAG01_DEV_REVERSEY
- row = (UG2864AMBAG01_DEV_YRES - 1) - row;
- #endif
- /* If the column is switched then the start of the run is the mirror of
- * the end of the run.
- *
- * col+pixlen-1
- * col |
- * 0 | | XRES
- * . S>>>>>>E .
- * . E<<<<<<S .
- * | |
- * | `-(XRES-1)-col
- * ` (XRES-1)-col-(pixlen-1)
- */
- #ifdef UG2864AMBAG01_DEV_REVERSEX
- col = (UG2864AMBAG01_DEV_XRES - 1) - col;
- #endif
- /* 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 |
- * --------+---+---+---+---+-...-+-----+
- * D0 | | X | | | | |
- * D1 | | X | | | | |
- * D2 | | X | | | | |
- * D3 | | X | | | | |
- * D4 | | X | | | | |
- * D5 | | X | | | | |
- * D6 | | X | | | | |
- * D7 | | 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 * UG2864AMBAG01_XRES + col];
- #ifdef CONFIG_LCD_PACKEDMSFIRST
- usrmask = MS_BIT;
- #else
- usrmask = LS_BIT;
- #endif
- *buffer = 0;
- for (i = 0; i < pixlen; i++)
- {
- /* Set or clear the corresponding bit */
- #ifdef UG2864AMBAG01_DEV_REVERSEX
- uint8_t byte = *fbptr--;
- #else
- uint8_t byte = *fbptr++;
- #endif
- 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_LCD_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;
- }
- #else
- # error "Configuration not implemented"
- #endif
- /****************************************************************************
- * Name: ug2864ambag01_getvideoinfo
- *
- * Description:
- * Get information about the LCD video controller configuration.
- *
- ****************************************************************************/
- static int ug2864ambag01_getvideoinfo(FAR struct lcd_dev_s *dev,
- FAR struct fb_videoinfo_s *vinfo)
- {
- DEBUGASSERT(dev && vinfo);
- lcdinfo("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: ug2864ambag01_getplaneinfo
- *
- * Description:
- * Get information about the configuration of each LCD color plane.
- *
- ****************************************************************************/
- static int ug2864ambag01_getplaneinfo(FAR struct lcd_dev_s *dev,
- unsigned int planeno,
- FAR struct lcd_planeinfo_s *pinfo)
- {
- DEBUGASSERT(pinfo && planeno == 0);
- lcdinfo("planeno: %d bpp: %d\n", planeno, g_planeinfo.bpp);
- memcpy(pinfo, &g_planeinfo, sizeof(struct lcd_planeinfo_s));
- return OK;
- }
- /****************************************************************************
- * Name: ug2864ambag01_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 ug2864ambag01_getpower(FAR struct lcd_dev_s *dev)
- {
- FAR struct ug2864ambag01_dev_s *priv =
- (FAR struct ug2864ambag01_dev_s *)dev;
- DEBUGASSERT(priv);
- lcdinfo("power: %s\n", priv->on ? "ON" : "OFF");
- return priv->on ? CONFIG_LCD_MAXPOWER : 0;
- }
- /****************************************************************************
- * Name: ug2864ambag01_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 ug2864ambag01_setpower(struct lcd_dev_s *dev, int power)
- {
- struct ug2864ambag01_dev_s *priv = (struct ug2864ambag01_dev_s *)dev;
- DEBUGASSERT(priv && (unsigned)power <= CONFIG_LCD_MAXPOWER && priv->spi);
- lcdinfo("power: %d [%d]\n", power, priv->on ? CONFIG_LCD_MAXPOWER : 0);
- /* Lock and select device */
- ug2864ambag01_lock(priv->spi);
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), true);
- if (power <= 0)
- {
- /* Turn the display off */
- SPI_SEND(priv->spi, SH1101A_DISPOFF);
- priv->on = false;
- }
- else
- {
- /* Turn the display on */
- SPI_SEND(priv->spi, SH1101A_DISPON);
- priv->on = true;
- }
- /* De-select and unlock the device */
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), false);
- ug2864ambag01_unlock(priv->spi);
- return OK;
- }
- /****************************************************************************
- * Name: ug2864ambag01_getcontrast
- *
- * Description:
- * Get the current contrast setting (0-CONFIG_LCD_MAXCONTRAST).
- *
- ****************************************************************************/
- static int ug2864ambag01_getcontrast(struct lcd_dev_s *dev)
- {
- struct ug2864ambag01_dev_s *priv = (struct ug2864ambag01_dev_s *)dev;
- DEBUGASSERT(priv);
- lcdinfo("contrast: %d\n", priv->contrast);
- return priv->contrast;
- }
- /****************************************************************************
- * Name: ug2864ambag01_setcontrast
- *
- * Description:
- * Set LCD panel contrast (0-CONFIG_LCD_MAXCONTRAST).
- *
- ****************************************************************************/
- static int ug2864ambag01_setcontrast(struct lcd_dev_s *dev,
- unsigned int contrast)
- {
- struct ug2864ambag01_dev_s *priv = (struct ug2864ambag01_dev_s *)dev;
- unsigned int scaled;
- lcdinfo("contrast: %d\n", contrast);
- DEBUGASSERT(priv);
- /* Verify the contrast value */
- #ifdef CONFIG_DEBUG_FEATURES
- if (contrast > CONFIG_LCD_MAXCONTRAST)
- {
- return -EINVAL;
- }
- #endif
- /* Scale contrast: newcontrast = 255 * contrast / CONFIG_LCD_MAXCONTRAST
- * Where contrast is in the range {1,255}
- */
- #if CONFIG_LCD_MAXCONTRAST != 255
- scaled = ((contrast << 8) - 1) / CONFIG_LCD_MAXCONTRAST;
- #else
- scaled = contrast;
- #endif
- /* Lock and select device */
- ug2864ambag01_lock(priv->spi);
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), true);
- /* Select command transfer */
- SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY(0), true);
- /* Set the contrast */
- SPI_SEND(priv->spi, SH1101A_CONTRAST_MODE); /* Set contrast control register */
- SPI_SEND(priv->spi, SH1101A_CONTRAST(scaled)); /* Data 1: Set 1 of 256 contrast steps */
- priv->contrast = contrast;
- /* De-select and unlock the device */
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), false);
- ug2864ambag01_unlock(priv->spi);
- return OK;
- }
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: ug2864ambag01_initialize
- *
- * Description:
- * Initialize the UG-2864AMBAG01 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_UG2864AMBAG01_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 *ug2864ambag01_initialize(FAR struct spi_dev_s *spi,
- unsigned int devno)
- {
- FAR struct ug2864ambag01_dev_s *priv = &g_oleddev;
- lcdinfo("Initializing\n");
- DEBUGASSERT(spi && devno == 0);
- /* Save the reference to the SPI device */
- priv->spi = spi;
- /* Lock and select device */
- ug2864ambag01_lock(priv->spi);
- SPI_SELECT(spi, SPIDEV_DISPLAY(0), true);
- /* Select command transfer */
- SPI_CMDDATA(spi, SPIDEV_DISPLAY(0), true);
- /* Configure the device */
- SPI_SEND(spi, SH1101A_DISPOFF); /* Display off */
- SPI_SEND(spi, SH1101A_SETCOLL(0)); /* Set lower column address */
- SPI_SEND(spi, SH1101A_SETCOLH(0)); /* Set higher column address */
- SPI_SEND(spi, SH1101A_STARTLINE(0)); /* Set display start line */
- SPI_SEND(spi, SH1101A_PAGEADDR(0)); /* Set page address */
- SPI_SEND(spi, SH1101A_CONTRAST_MODE); /* Contrast control */
- SPI_SEND(spi, UG2864AMBAG01_CONTRAST); /* Default contrast */
- SPI_SEND(spi, SH1101A_REMAPPLEFT); /* Set segment remap left */
- SPI_SEND(spi, SH1101A_EDISPOFF); /* Normal display */
- SPI_SEND(spi, SH1101A_NORMAL); /* Normal (un-reversed) display mode */
- SPI_SEND(spi, SH1101A_MRATIO_MODE); /* Multiplex ratio */
- SPI_SEND(spi, SH1101A_MRATIO(0x3f)); /* Duty = 1/64 */
- SPI_SEND(spi, SH1101A_SCANTOCOM0); /* Com scan direction: Scan from COM[n-1] to COM[0] */
- SPI_SEND(spi, SH1101A_DISPOFFS_MODE); /* Set display offset */
- SPI_SEND(spi, SH1101A_DISPOFFS(0));
- SPI_SEND(spi, SH1101A_CLKDIV_SET); /* Set clock divider */
- SPI_SEND(spi, SH1101A_CLKDIV(0, 0));
- SPI_SEND(spi, SH1101A_CMNPAD_CONFIG); /* Set common pads */
- SPI_SEND(spi, SH1101A_CMNPAD(0x10));
- SPI_SEND(spi, SH1101A_VCOM_SET);
- SPI_SEND(spi, SH1101A_VCOM(0x40));
- SPI_SEND(spi, SH1101A_DCDC_MODE); /* DC/DC control mode: on */
- SPI_SEND(spi, SH1101A_DCDC_ON);
- SPI_SEND(spi, SH1101A_DISPON); /* display ON */
- /* De-select and unlock the device */
- SPI_SELECT(spi, SPIDEV_DISPLAY(0), false);
- ug2864ambag01_unlock(priv->spi);
- /* Clear the display */
- up_mdelay(100);
- ug2864ambag01_fill(&priv->dev, UG_Y1_BLACK);
- return &priv->dev;
- }
- /****************************************************************************
- * Name: ug2864ambag01_fill
- *
- * Description:
- * This non-standard method can be used to clear the entire display by
- * writing one color to the display.
- * This is much faster than writing a series of runs.
- *
- * Input Parameters:
- * priv - Reference to private driver structure
- *
- * Assumptions:
- * Caller has selected the OLED section.
- *
- ****************************************************************************/
- void ug2864ambag01_fill(FAR struct lcd_dev_s *dev, uint8_t color)
- {
- FAR struct ug2864ambag01_dev_s *priv = &g_oleddev;
- unsigned int page;
- /* Make an 8-bit version of the selected color */
- if (color & 1)
- {
- color = 0xff;
- }
- else
- {
- color = 0;
- }
- /* Initialize the framebuffer */
- memset(priv->fb, color, UG2864AMBAG01_FBSIZE);
- /* Lock and select device */
- ug2864ambag01_lock(priv->spi);
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), true);
- /* Visit each page */
- for (page = 0; page < UG2864AMBAG01_DEV_PAGES; page++)
- {
- /* Select command transfer */
- SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY(0), true);
- /* Set the column address to the XOFFSET value */
- SPI_SEND(priv->spi, SH1101A_SETCOLL(UG2864AMBAG01_DEV_XOFFSET));
- SPI_SEND(priv->spi, SH1101A_SETCOLH(0));
- /* Set the page address */
- SPI_SEND(priv->spi, SH1101A_PAGEADDR(page));
- /* Select data transfer */
- SPI_CMDDATA(priv->spi, SPIDEV_DISPLAY(0), false);
- /* Transfer one page of the selected color */
- SPI_SNDBLOCK(priv->spi, &priv->fb[page * UG2864AMBAG01_XRES],
- UG2864AMBAG01_XRES);
- }
- /* De-select and unlock the device */
- SPI_SELECT(priv->spi, SPIDEV_DISPLAY(0), false);
- ug2864ambag01_unlock(priv->spi);
- }
- #endif /* CONFIG_LCD_UG2864AMBAG01 */
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