From cec4628a9777233c699bda86a747f49de576105b Mon Sep 17 00:00:00 2001 From: Mateusz Tomaszkiewicz Date: Thu, 21 Feb 2013 22:46:47 +0100 Subject: SSD2119: backlight control - Backlight uses PWM on TIM4 CH2. - Updated readme. - Updated gdisp_lld.c: moved from lld_gdisp_* to gdisp_lld_* functions names format. - One forgotten GDISP_LLD() macro removal. - General code cleanup (make diff with -w parameter ;)) --- drivers/gdisp/SSD2119/gdisp_lld.c | 1262 +++++++++++++++++++------------------ 1 file changed, 635 insertions(+), 627 deletions(-) (limited to 'drivers/gdisp/SSD2119/gdisp_lld.c') diff --git a/drivers/gdisp/SSD2119/gdisp_lld.c b/drivers/gdisp/SSD2119/gdisp_lld.c index 15ae85ec..f6d6e8ab 100644 --- a/drivers/gdisp/SSD2119/gdisp_lld.c +++ b/drivers/gdisp/SSD2119/gdisp_lld.c @@ -1,627 +1,635 @@ -/* - ChibiOS/GFX - Copyright (C) 2012 - Joel Bodenmann aka Tectu - - This file is part of ChibiOS/GFX. - - ChibiOS/GFX is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - ChibiOS/GFX is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see . -*/ - -/** - * @file drivers/gdisp/SSD2119/gdisp_lld.c - * @brief GDISP Graphics Driver subsystem low level driver source for the SSD2119 display. - * - * @addtogroup GDISP - * @{ - */ - -#include "ch.h" -#include "hal.h" -#include "gfx.h" - -#include "ssd2119.h" - -#if GFX_USE_GDISP /*|| defined(__DOXYGEN__)*/ - -/* Include the emulation code for things we don't support */ -#include "gdisp/lld/emulation.c" - -/*===========================================================================*/ -/* Driver local definitions. */ -/*===========================================================================*/ - -#ifndef GDISP_SCREEN_HEIGHT - #define GDISP_SCREEN_HEIGHT 240 -#endif -#ifndef GDISP_SCREEN_WIDTH - #define GDISP_SCREEN_WIDTH 320 -#endif - -#define GDISP_INITIAL_CONTRAST 50 -#define GDISP_INITIAL_BACKLIGHT 100 - -/*===========================================================================*/ -/* Driver local functions. */ -/*===========================================================================*/ - -#if defined(GDISP_USE_CUSTOM_BOARD) && GDISP_USE_CUSTOM_BOARD - /* Include the user supplied board definitions */ - #include "gdisp_lld_board.h" -#elif defined(BOARD_EMBEST_DMSTF4BB) - #include "gdisp_lld_board_embest_dmstf4bb.h" -#elif defined(BOARD_EMBEST_DMSTF4BB_FSMC) - #include "gdisp_lld_board_embest_dmstf4bb_fsmc.h" -#else - /* Include the user supplied board definitions */ - #include "gdisp_lld_board.h" -#endif - -// Some common routines and macros -#define write_reg(reg, data) { write_index(reg); write_data(data); } -#define stream_start() write_index(SSD2119_REG_RAM_DATA); -#define stream_stop() -#define delay(us) chThdSleepMicroseconds(us) -#define delayms(ms) chThdSleepMilliseconds(ms) - -static __inline void set_cursor(coord_t x, coord_t y) { - /* Reg SSD2119_REG_X_RAM_ADDR is 9 bit value - * Reg SSD2119_REG_Y_RAM_ADDR is an 8 bit - * Use a bit mask to make sure they are not set too high - */ - switch(GDISP.Orientation) { - case GDISP_ROTATE_180: - write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - 1 - x) & 0x01FF); - write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - 1 - y) & 0x00FF); - break; - case GDISP_ROTATE_0: - write_reg(SSD2119_REG_X_RAM_ADDR, x & 0x01FF); - write_reg(SSD2119_REG_Y_RAM_ADDR, y & 0x00FF); - break; - case GDISP_ROTATE_270: - write_reg(SSD2119_REG_X_RAM_ADDR, y & 0x01FF); - write_reg(SSD2119_REG_Y_RAM_ADDR, x & 0x00FF); - break; - case GDISP_ROTATE_90: - write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF); - write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF); - break; - } -} - -static void set_viewport(coord_t x, coord_t y, coord_t cx, coord_t cy) { - - set_cursor(x, y); - - /* Reg 0x44 - Vertical RAM address position - * Upper Byte - VEA - * Lower Byte - VSA - * 0 <= VSA <= VEA <= 0xEF - * Reg 0x45,0x46 - Horizontal RAM address position - * Lower 9 bits gives 0-511 range in each value, HSA and HEA respectively - * 0 <= HSA <= HEA <= 0x13F - */ - switch(GDISP.Orientation) { - case GDISP_ROTATE_0: - write_reg(SSD2119_REG_V_RAM_POS, (((y + cy - 1) << 8) & 0xFF00 ) | (y & 0x00FF)); - write_reg(SSD2119_REG_H_RAM_START, (x & 0x01FF)); - write_reg(SSD2119_REG_H_RAM_END, (x + cx - 1) & 0x01FF); - break; - case GDISP_ROTATE_270: - write_reg(SSD2119_REG_V_RAM_POS, (((y + cy - 1) << 8) & 0xFF00 ) | (x & 0x00FF)); - write_reg(SSD2119_REG_H_RAM_START, (y & 0x01FF)); - write_reg(SSD2119_REG_H_RAM_END, (y + cy - 1) & 0x01FF); - break; - case GDISP_ROTATE_180: - write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - y - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (y + cy)) & 0x00FF)); - write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (x + cx)) & 0x01FF); - write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - x - 1) & 0x01FF); - break; - case GDISP_ROTATE_90: - write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (x + cx)) & 0x00FF)); - write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (y + cy)) & 0x01FF); - write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF); - break; - } - - set_cursor(x, y); -} - -static __inline void reset_viewport(void) { - set_viewport(0, 0, GDISP.Width, GDISP.Height); -} - -/*===========================================================================*/ -/* Driver interrupt handlers. */ -/*===========================================================================*/ - -/*===========================================================================*/ -/* Driver exported functions. */ -/*===========================================================================*/ - -/* ---- Required Routines ---- */ -/* - The following 2 routines are required. - All other routines are optional. -*/ - -/** - * @brief Low level GDISP driver initialization. - * - * @notapi - */ -bool_t lld_gdisp_init(void) { - /* Initialise your display */ - init_board(); - - // Hardware reset - setpin_reset(TRUE); - delayms(20); - setpin_reset(FALSE); - delayms(20); - - // Get the bus for the following initialisation commands - acquire_bus(); - - // Enter sleep mode (if we are not already there). - write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0001); - delay(5); - - // Set initial power parameters. - write_reg(SSD2119_REG_PWR_CTRL_5, 0x00B2); - delay(5); - write_reg(SSD2119_REG_VCOM_OTP_1, 0x0006); - delay(5); - - // Start the oscillator. - write_reg(SSD2119_REG_OSC_START, 0x0001); - delay(5); - - // Set pixel format and basic display orientation (scanning direction). - write_reg(SSD2119_REG_OUTPUT_CTRL, 0x30EF); - delay(5); - write_reg(SSD2119_REG_LCD_DRIVE_AC_CTRL, 0x0600); - delay(5); - - // Exit sleep mode. - write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0000); - delay(5); - - // Configure pixel color format and MCU interface parameters. - write_reg(SSD2119_REG_ENTRY_MODE, 0x6830); // ENTRY_MODE_DEFAULT - delay(5); - - // Set analog parameters. - write_reg(SSD2119_REG_SLEEP_MODE_2, 0x0999); - delay(5); - write_reg(SSD2119_REG_ANALOG_SET, 0x3800); - delay(5); - - // Enable the display. - write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0033); - delay(5); - - // Set VCIX2 voltage to 6.1V. - write_reg(SSD2119_REG_PWR_CTRL_2, 0x0005); - delay(5); - - // Configure gamma correction. - write_reg(SSD2119_REG_GAMMA_CTRL_1, 0x0000); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_2, 0x0303); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_3, 0x0407); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_4, 0x0301); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_5, 0x0301); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_6, 0x0403); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_7, 0x0707); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_8, 0x0400); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_9, 0x0a00); - delay(5); - write_reg(SSD2119_REG_GAMMA_CTRL_10, 0x1000); - delay(5); - - // Configure Vlcd63 and VCOMl. - write_reg(SSD2119_REG_PWR_CTRL_3, 0x000A); - delay(5); - write_reg(SSD2119_REG_PWR_CTRL_4, 0x2E00); - delay(5); - - // Set the display size and ensure that the GRAM window is set to allow access to the full display buffer. - write_reg(SSD2119_REG_V_RAM_POS, (GDISP_SCREEN_HEIGHT - 1) << 8); - delay(5); - write_reg(SSD2119_REG_H_RAM_START, 0x0000); - delay(5); - write_reg(SSD2119_REG_H_RAM_END, GDISP_SCREEN_WIDTH - 1); - delay(5); - - write_reg(SSD2119_REG_X_RAM_ADDR, 0x00); - delay(5); - write_reg(SSD2119_REG_Y_RAM_ADDR, 0x00); - delay(5); - - // Release the bus - release_bus(); - - /* Turn on the back-light */ - set_backlight(GDISP_INITIAL_BACKLIGHT); - - /* Initialise the GDISP structure */ - GDISP.Width = GDISP_SCREEN_WIDTH; - GDISP.Height = GDISP_SCREEN_HEIGHT; - GDISP.Orientation = GDISP_ROTATE_0; - GDISP.Powermode = powerOn; - GDISP.Backlight = GDISP_INITIAL_BACKLIGHT; - GDISP.Contrast = GDISP_INITIAL_CONTRAST; - #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP - GDISP.clipx0 = 0; - GDISP.clipy0 = 0; - GDISP.clipx1 = GDISP.Width; - GDISP.clipy1 = GDISP.Height; - #endif - return TRUE; -} - -/** - * @brief Draws a pixel on the display. - * - * @param[in] x X location of the pixel - * @param[in] y Y location of the pixel - * @param[in] color The color of the pixel - * - * @notapi - */ -void lld_gdisp_draw_pixel(coord_t x, coord_t y, color_t color) { - #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP - if (x < GDISP.clipx0 || y < GDISP.clipy0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; - #endif - - acquire_bus(); - set_cursor(x, y); - write_reg(SSD2119_REG_RAM_DATA, color); - release_bus(); -} - -/* ---- Optional Routines ---- */ -/* - All the below routines are optional. - Defining them will increase speed but everything - will work if they are not defined. - If you are not using a routine - turn it off using - the appropriate GDISP_HARDWARE_XXXX macro. - Don't bother coding for obvious similar routines if - there is no performance penalty as the emulation software - makes a good job of using similar routines. - eg. If gfillarea() is defined there is little - point in defining clear() unless the - performance bonus is significant. - For good performance it is suggested to implement - fillarea() and blitarea(). -*/ - -#if GDISP_HARDWARE_CLEARS || defined(__DOXYGEN__) - /** - * @brief Clear the display. - * @note Optional - The high level driver can emulate using software. - * - * @param[in] color The color of the pixel - * - * @notapi - */ - void lld_gdisp_clear(color_t color) { - unsigned i; - - acquire_bus(); - reset_viewport(); - set_cursor(0, 0); - stream_start(); - for(i = 0; i < GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT; i++) - write_data(color); - stream_stop(); - release_bus(); - } -#endif - -#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__) - /** - * @brief Fill an area with a color. - * @note Optional - The high level driver can emulate using software. - * - * @param[in] x, y The start filled area - * @param[in] cx, cy The width and height to be filled - * @param[in] color The color of the fill - * - * @notapi - */ - void lld_gdisp_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) { - unsigned i, area; - - #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP - if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; } - if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; } - if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; - if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x; - if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y; - #endif - - area = cx*cy; - - acquire_bus(); - set_viewport(x, y, cx, cy); - stream_start(); - for(i = 0; i < area; i++) - write_data(color); - stream_stop(); - release_bus(); - } -#endif - -#if GDISP_HARDWARE_BITFILLS || defined(__DOXYGEN__) - /** - * @brief Fill an area with a bitmap. - * @note Optional - The high level driver can emulate using software. - * - * @param[in] x, y The start filled area - * @param[in] cx, cy The width and height to be filled - * @param[in] srcx, srcy The bitmap position to start the fill from - * @param[in] srccx The width of a line in the bitmap. - * @param[in] buffer The pixels to use to fill the area. - * - * @notapi - */ - void lld_gdisp_blit_area_ex(coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t srcx, coord_t srcy, coord_t srccx, const pixel_t *buffer) { - coord_t endx, endy; - unsigned lg; - - #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP - if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; srcx += GDISP.clipx0 - x; x = GDISP.clipx0; } - if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; srcy += GDISP.clipy0 - y; y = GDISP.clipy0; } - if (srcx+cx > srccx) cx = srccx - srcx; - if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; - if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x; - if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y; - #endif - - acquire_bus(); - set_viewport(x, y, cx, cy); - stream_start(); - - endx = srcx + cx; - endy = y + cy; - lg = srccx - cx; - buffer += srcx + srcy * srccx; - for(; y < endy; y++, buffer += lg) - for(x=srcx; x < endx; x++) - write_data(*buffer++); - stream_stop(); - release_bus(); - } -#endif - -#if (GDISP_NEED_PIXELREAD && GDISP_HARDWARE_PIXELREAD) || defined(__DOXYGEN__) - /** - * @brief Get the color of a particular pixel. - * @note Optional. - * @note If x,y is off the screen, the result is undefined. - * - * @param[in] x, y The pixel to be read - * - * @notapi - */ - color_t lld_gdisp_get_pixel_color(coord_t x, coord_t y) { - color_t color; - - #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP - if (x < 0 || x >= GDISP.Width || y < 0 || y >= GDISP.Height) return 0; - #endif - - acquire_bus(); - set_cursor(x, y); - stream_start(); - color = read_data(); // dummy read - color = read_data(); - stream_stop(); - release_bus(); - - return color; - } -#endif - -#if (GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL) || defined(__DOXYGEN__) - /** - * @brief Scroll vertically a section of the screen. - * @note Optional. - * @note If x,y + cx,cy is off the screen, the result is undefined. - * @note If lines is >= cy, it is equivelent to a area fill with bgcolor. - * - * @param[in] x, y The start of the area to be scrolled - * @param[in] cx, cy The size of the area to be scrolled - * @param[in] lines The number of lines to scroll (Can be positive or negative) - * @param[in] bgcolor The color to fill the newly exposed area. - * - * @notapi - */ - void lld_gdisp_vertical_scroll(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) { - static color_t buf[((GDISP_SCREEN_HEIGHT > GDISP_SCREEN_WIDTH ) ? GDISP_SCREEN_HEIGHT : GDISP_SCREEN_WIDTH)]; - coord_t row0, row1; - unsigned i, gap, abslines, j; - - #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP - if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; } - if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; } - if (!lines || cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; - if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x; - if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y; - #endif - - abslines = lines < 0 ? -lines : lines; - - acquire_bus(); - if (abslines >= cy) { - abslines = cy; - gap = 0; - } else { - gap = cy - abslines; - for(i = 0; i < gap; i++) { - if(lines > 0) { - row0 = y + i + lines; - row1 = y + i; - } else { - row0 = (y - i - 1) + lines; - row1 = (y - i - 1); - } - - /* read row0 into the buffer and then write at row1*/ - set_viewport(x, row0, cx, 1); - stream_start(); - j = read_data(); // dummy read - for (j = 0; j < cx; j++) - buf[j] = read_data(); - stream_stop(); - - set_viewport(x, row1, cx, 1); - stream_start(); - for (j = 0; j < cx; j++) - write_data(buf[j]); - stream_stop(); - } - } - - /* fill the remaining gap */ - set_viewport(x, lines > 0 ? (y+gap) : y, cx, abslines); - stream_start(); - gap = cx*abslines; - for(i = 0; i < gap; i++) write_data(bgcolor); - stream_stop(); - release_bus(); - } -#endif - -#if (GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL) || defined(__DOXYGEN__) - /** - * @brief Driver Control - * @details Unsupported control codes are ignored. - * @note The value parameter should always be typecast to (void *). - * @note There are some predefined and some specific to the low level driver. - * @note GDISP_CONTROL_POWER - Takes a gdisp_powermode_t - * GDISP_CONTROL_ORIENTATION - Takes a gdisp_orientation_t - * GDISP_CONTROL_BACKLIGHT - Takes an int from 0 to 100. For a driver - * that only supports off/on anything other - * than zero is on. - * GDISP_CONTROL_CONTRAST - Takes an int from 0 to 100. - * GDISP_CONTROL_LLD - Low level driver control constants start at - * this value. - * - * @param[in] what What to do. - * @param[in] value The value to use (always cast to a void *). - * - * @notapi - */ - void lld_gdisp_control(unsigned what, void *value) { - switch(what) { - case GDISP_CONTROL_POWER: - if (GDISP.Powermode == (gdisp_powermode_t)value) - return; - switch((gdisp_powermode_t)value) { - case powerOff: - acquire_bus(); - write_reg(0x0010, 0x0000); // leave sleep mode - write_reg(0x0007, 0x0000); // halt operation - write_reg(0x0000, 0x0000); // turn off oszillator - write_reg(0x0010, 0x0001); // enter sleepmode - release_bus(); - break; - case powerOn: - acquire_bus(); - write_reg(0x0010, 0x0000); // leave sleep mode - release_bus(); - if (GDISP.Powermode != powerSleep) - GDISP_LLD(init)(); - break; - case powerSleep: - acquire_bus(); - write_reg(0x0010, 0x0001); // enter sleep mode - release_bus(); - break; - default: - return; - } - GDISP.Powermode = (gdisp_powermode_t)value; - return; - case GDISP_CONTROL_ORIENTATION: - if (GDISP.Orientation == (gdisp_orientation_t)value) - return; - switch((gdisp_orientation_t)value) { - case GDISP_ROTATE_0: - acquire_bus(); - write_reg(0x0001, 0x2B3F); - /* ID = 11 AM = 0 */ - write_reg(0x0011, 0x6070); - release_bus(); - GDISP.Height = GDISP_SCREEN_HEIGHT; - GDISP.Width = GDISP_SCREEN_WIDTH; - break; - case GDISP_ROTATE_90: - acquire_bus(); - write_reg(0x0001, 0x293F); - /* ID = 11 AM = 1 */ - write_reg(0x0011, 0x6078); - release_bus(); - GDISP.Height = GDISP_SCREEN_WIDTH; - GDISP.Width = GDISP_SCREEN_HEIGHT; - break; - case GDISP_ROTATE_180: - acquire_bus(); - write_reg(0x0001, 0x2B3F); - /* ID = 01 AM = 0 */ - write_reg(0x0011, 0x6040); - release_bus(); - GDISP.Height = GDISP_SCREEN_HEIGHT; - GDISP.Width = GDISP_SCREEN_WIDTH; - break; - case GDISP_ROTATE_270: - acquire_bus(); - write_reg(0x0001, 0x293F); - /* ID = 01 AM = 1 */ - write_reg(0x0011, 0x6048); - release_bus(); - GDISP.Height = GDISP_SCREEN_WIDTH; - GDISP.Width = GDISP_SCREEN_HEIGHT; - break; - default: - return; - } - #if GDISP_NEED_CLIP || GDISP_NEED_VALIDATION - GDISP.clipx0 = 0; - GDISP.clipy0 = 0; - GDISP.clipx1 = GDISP.Width; - GDISP.clipy1 = GDISP.Height; - #endif - GDISP.Orientation = (gdisp_orientation_t)value; - return; -/* - case GDISP_CONTROL_BACKLIGHT: - case GDISP_CONTROL_CONTRAST: -*/ - } - } -#endif - -#endif /* GFX_USE_GDISP */ -/** @} */ +/* + ChibiOS/GFX - Copyright (C) 2012 + Joel Bodenmann aka Tectu + + This file is part of ChibiOS/GFX. + + ChibiOS/GFX is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/GFX is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file drivers/gdisp/SSD2119/gdisp_lld.c + * @brief GDISP Graphics Driver subsystem low level driver source for the SSD2119 display. + * + * @addtogroup GDISP + * @{ + */ + +#include "ch.h" +#include "hal.h" +#include "gfx.h" + +#include "ssd2119.h" + +#if GFX_USE_GDISP /*|| defined(__DOXYGEN__)*/ + +/* Include the emulation code for things we don't support */ +#include "gdisp/lld/emulation.c" + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +#ifndef GDISP_SCREEN_HEIGHT + #define GDISP_SCREEN_HEIGHT 240 +#endif +#ifndef GDISP_SCREEN_WIDTH + #define GDISP_SCREEN_WIDTH 320 +#endif + +#define GDISP_INITIAL_CONTRAST 50 +#define GDISP_INITIAL_BACKLIGHT 100 + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +#if defined(GDISP_USE_CUSTOM_BOARD) && GDISP_USE_CUSTOM_BOARD + /* Include the user supplied board definitions */ + #include "gdisp_lld_board.h" +#elif defined(BOARD_EMBEST_DMSTF4BB) + #include "gdisp_lld_board_embest_dmstf4bb.h" +#elif defined(BOARD_EMBEST_DMSTF4BB_FSMC) + #include "gdisp_lld_board_embest_dmstf4bb_fsmc.h" +#else + /* Include the user supplied board definitions */ + #include "gdisp_lld_board.h" +#endif + +// Some common routines and macros +#define write_reg(reg, data) { write_index(reg); write_data(data); } +#define stream_start() write_index(SSD2119_REG_RAM_DATA); +#define stream_stop() +#define delay(us) chThdSleepMicroseconds(us) +#define delayms(ms) chThdSleepMilliseconds(ms) + +static __inline void set_cursor(coord_t x, coord_t y) { + /* Reg SSD2119_REG_X_RAM_ADDR is 9 bit value + * Reg SSD2119_REG_Y_RAM_ADDR is an 8 bit + * Use a bit mask to make sure they are not set too high + */ + switch(GDISP.Orientation) { + case GDISP_ROTATE_0: + write_reg(SSD2119_REG_X_RAM_ADDR, x & 0x01FF); + write_reg(SSD2119_REG_Y_RAM_ADDR, y & 0x00FF); + break; + case GDISP_ROTATE_90: + write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF); + write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF); + break; + case GDISP_ROTATE_180: + write_reg(SSD2119_REG_X_RAM_ADDR, (GDISP_SCREEN_WIDTH - 1 - x) & 0x01FF); + write_reg(SSD2119_REG_Y_RAM_ADDR, (GDISP_SCREEN_HEIGHT - 1 - y) & 0x00FF); + break; + case GDISP_ROTATE_270: + write_reg(SSD2119_REG_X_RAM_ADDR, y & 0x01FF); + write_reg(SSD2119_REG_Y_RAM_ADDR, x & 0x00FF); + break; + } +} + +static void set_viewport(coord_t x, coord_t y, coord_t cx, coord_t cy) { + + set_cursor(x, y); + + /* Reg 0x44 - Vertical RAM address position + * Upper Byte - VEA + * Lower Byte - VSA + * 0 <= VSA <= VEA <= 0xEF + * Reg 0x45,0x46 - Horizontal RAM address position + * Lower 9 bits gives 0-511 range in each value, HSA and HEA respectively + * 0 <= HSA <= HEA <= 0x13F + */ + switch(GDISP.Orientation) { + case GDISP_ROTATE_0: + write_reg(SSD2119_REG_V_RAM_POS, (((y + cy - 1) << 8) & 0xFF00 ) | (y & 0x00FF)); + write_reg(SSD2119_REG_H_RAM_START, (x & 0x01FF)); + write_reg(SSD2119_REG_H_RAM_END, (x + cx - 1) & 0x01FF); + break; + case GDISP_ROTATE_90: + write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - x - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (x + cx)) & 0x00FF)); + write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (y + cy)) & 0x01FF); + write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - y - 1) & 0x01FF); + break; + case GDISP_ROTATE_180: + write_reg(SSD2119_REG_V_RAM_POS, (((GDISP_SCREEN_HEIGHT - y - 1) & 0x00FF) << 8) | ((GDISP_SCREEN_HEIGHT - (y + cy)) & 0x00FF)); + write_reg(SSD2119_REG_H_RAM_START, (GDISP_SCREEN_WIDTH - (x + cx)) & 0x01FF); + write_reg(SSD2119_REG_H_RAM_END, (GDISP_SCREEN_WIDTH - x - 1) & 0x01FF); + break; + case GDISP_ROTATE_270: + write_reg(SSD2119_REG_V_RAM_POS, (((y + cy - 1) << 8) & 0xFF00 ) | (x & 0x00FF)); + write_reg(SSD2119_REG_H_RAM_START, (y & 0x01FF)); + write_reg(SSD2119_REG_H_RAM_END, (y + cy - 1) & 0x01FF); + break; + } + + set_cursor(x, y); +} + +static __inline void reset_viewport(void) { + set_viewport(0, 0, GDISP.Width, GDISP.Height); +} + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/* ---- Required Routines ---- */ +/* + The following 2 routines are required. + All other routines are optional. +*/ + +/** + * @brief Low level GDISP driver initialization. + * + * @notapi + */ +bool_t gdisp_lld_init(void) { + /* Initialise your display */ + init_board(); + + // Hardware reset + setpin_reset(TRUE); + delayms(20); + setpin_reset(FALSE); + delayms(20); + + // Get the bus for the following initialisation commands + acquire_bus(); + + // Enter sleep mode (if we are not already there). + write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0001); + delay(5); + + // Set initial power parameters. + write_reg(SSD2119_REG_PWR_CTRL_5, 0x00B2); + delay(5); + write_reg(SSD2119_REG_VCOM_OTP_1, 0x0006); + delay(5); + + // Start the oscillator. + write_reg(SSD2119_REG_OSC_START, 0x0001); + delay(5); + + // Set pixel format and basic display orientation (scanning direction). + write_reg(SSD2119_REG_OUTPUT_CTRL, 0x30EF); + delay(5); + write_reg(SSD2119_REG_LCD_DRIVE_AC_CTRL, 0x0600); + delay(5); + + // Exit sleep mode. + write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0000); + delay(5); + + // Configure pixel color format and MCU interface parameters. + write_reg(SSD2119_REG_ENTRY_MODE, 0x6830); // ENTRY_MODE_DEFAULT + delay(5); + + // Set analog parameters. + write_reg(SSD2119_REG_SLEEP_MODE_2, 0x0999); + delay(5); + write_reg(SSD2119_REG_ANALOG_SET, 0x3800); + delay(5); + + // Enable the display. + write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0033); + delay(5); + + // Set VCIX2 voltage to 6.1V. + write_reg(SSD2119_REG_PWR_CTRL_2, 0x0005); + delay(5); + + // Configure gamma correction. + write_reg(SSD2119_REG_GAMMA_CTRL_1, 0x0000); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_2, 0x0303); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_3, 0x0407); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_4, 0x0301); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_5, 0x0301); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_6, 0x0403); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_7, 0x0707); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_8, 0x0400); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_9, 0x0a00); + delay(5); + write_reg(SSD2119_REG_GAMMA_CTRL_10, 0x1000); + delay(5); + + // Configure Vlcd63 and VCOMl. + write_reg(SSD2119_REG_PWR_CTRL_3, 0x000A); + delay(5); + write_reg(SSD2119_REG_PWR_CTRL_4, 0x2E00); + delay(5); + + // Set the display size and ensure that the GRAM window is set to allow access to the full display buffer. + write_reg(SSD2119_REG_V_RAM_POS, (GDISP_SCREEN_HEIGHT - 1) << 8); + delay(5); + write_reg(SSD2119_REG_H_RAM_START, 0x0000); + delay(5); + write_reg(SSD2119_REG_H_RAM_END, GDISP_SCREEN_WIDTH - 1); + delay(5); + + write_reg(SSD2119_REG_X_RAM_ADDR, 0x00); + delay(5); + write_reg(SSD2119_REG_Y_RAM_ADDR, 0x00); + delay(5); + + // Release the bus + release_bus(); + + /* Turn on the backlight */ + set_backlight(GDISP_INITIAL_BACKLIGHT); + + /* Initialise the GDISP structure */ + GDISP.Width = GDISP_SCREEN_WIDTH; + GDISP.Height = GDISP_SCREEN_HEIGHT; + GDISP.Orientation = GDISP_ROTATE_0; + GDISP.Powermode = powerOn; + GDISP.Backlight = GDISP_INITIAL_BACKLIGHT; + GDISP.Contrast = GDISP_INITIAL_CONTRAST; + #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP + GDISP.clipx0 = 0; + GDISP.clipy0 = 0; + GDISP.clipx1 = GDISP.Width; + GDISP.clipy1 = GDISP.Height; + #endif + return TRUE; +} + +/** + * @brief Draws a pixel on the display. + * + * @param[in] x X location of the pixel + * @param[in] y Y location of the pixel + * @param[in] color The color of the pixel + * + * @notapi + */ +void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) { + #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP + if (x < GDISP.clipx0 || y < GDISP.clipy0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; + #endif + + acquire_bus(); + set_cursor(x, y); + write_reg(SSD2119_REG_RAM_DATA, color); + release_bus(); +} + +/* ---- Optional Routines ---- */ +/* + All the below routines are optional. + Defining them will increase speed but everything + will work if they are not defined. + If you are not using a routine - turn it off using + the appropriate GDISP_HARDWARE_XXXX macro. + Don't bother coding for obvious similar routines if + there is no performance penalty as the emulation software + makes a good job of using similar routines. + eg. If gfillarea() is defined there is little + point in defining clear() unless the + performance bonus is significant. + For good performance it is suggested to implement + fillarea() and blitarea(). +*/ + +#if GDISP_HARDWARE_CLEARS || defined(__DOXYGEN__) + /** + * @brief Clear the display. + * @note Optional - The high level driver can emulate using software. + * + * @param[in] color The color of the pixel + * + * @notapi + */ + void gdisp_lld_clear(color_t color) { + unsigned i; + + acquire_bus(); + reset_viewport(); + set_cursor(0, 0); + stream_start(); + for(i = 0; i < GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT; i++) + write_data(color); + stream_stop(); + release_bus(); + } +#endif + +#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__) + /** + * @brief Fill an area with a color. + * @note Optional - The high level driver can emulate using software. + * + * @param[in] x, y The start filled area + * @param[in] cx, cy The width and height to be filled + * @param[in] color The color of the fill + * + * @notapi + */ + void gdisp_lld_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) { + unsigned i, area; + + #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP + if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; } + if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; } + if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; + if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x; + if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y; + #endif + + area = cx*cy; + + acquire_bus(); + set_viewport(x, y, cx, cy); + stream_start(); + for(i = 0; i < area; i++) + write_data(color); + stream_stop(); + release_bus(); + } +#endif + +#if GDISP_HARDWARE_BITFILLS || defined(__DOXYGEN__) + /** + * @brief Fill an area with a bitmap. + * @note Optional - The high level driver can emulate using software. + * + * @param[in] x, y The start filled area + * @param[in] cx, cy The width and height to be filled + * @param[in] srcx, srcy The bitmap position to start the fill from + * @param[in] srccx The width of a line in the bitmap. + * @param[in] buffer The pixels to use to fill the area. + * + * @notapi + */ + void gdisp_lld_blit_area_ex(coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t srcx, coord_t srcy, coord_t srccx, const pixel_t *buffer) { + coord_t endx, endy; + unsigned lg; + + #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP + if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; srcx += GDISP.clipx0 - x; x = GDISP.clipx0; } + if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; srcy += GDISP.clipy0 - y; y = GDISP.clipy0; } + if (srcx+cx > srccx) cx = srccx - srcx; + if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; + if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x; + if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y; + #endif + + acquire_bus(); + set_viewport(x, y, cx, cy); + stream_start(); + + endx = srcx + cx; + endy = y + cy; + lg = srccx - cx; + buffer += srcx + srcy * srccx; + for(; y < endy; y++, buffer += lg) + for(x=srcx; x < endx; x++) + write_data(*buffer++); + stream_stop(); + release_bus(); + } +#endif + +#if (GDISP_NEED_PIXELREAD && GDISP_HARDWARE_PIXELREAD) || defined(__DOXYGEN__) + /** + * @brief Get the color of a particular pixel. + * @note Optional. + * @note If x,y is off the screen, the result is undefined. + * + * @param[in] x, y The pixel to be read + * + * @notapi + */ + color_t gdisp_lld_get_pixel_color(coord_t x, coord_t y) { + color_t color; + + #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP + if (x < 0 || x >= GDISP.Width || y < 0 || y >= GDISP.Height) return 0; + #endif + + acquire_bus(); + set_cursor(x, y); + stream_start(); + color = read_data(); // dummy read + color = read_data(); + stream_stop(); + release_bus(); + + return color; + } +#endif + +#if (GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL) || defined(__DOXYGEN__) + /** + * @brief Scroll vertically a section of the screen. + * @note Optional. + * @note If x,y + cx,cy is off the screen, the result is undefined. + * @note If lines is >= cy, it is equivelent to a area fill with bgcolor. + * + * @param[in] x, y The start of the area to be scrolled + * @param[in] cx, cy The size of the area to be scrolled + * @param[in] lines The number of lines to scroll (Can be positive or negative) + * @param[in] bgcolor The color to fill the newly exposed area. + * + * @notapi + */ + void lld_gdisp_vertical_scroll(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) { + static color_t buf[((GDISP_SCREEN_HEIGHT > GDISP_SCREEN_WIDTH ) ? GDISP_SCREEN_HEIGHT : GDISP_SCREEN_WIDTH)]; + coord_t row0, row1; + unsigned i, gap, abslines, j; + + #if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP + if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; } + if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; } + if (!lines || cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return; + if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x; + if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y; + #endif + + abslines = lines < 0 ? -lines : lines; + + acquire_bus(); + if (abslines >= cy) { + abslines = cy; + gap = 0; + } else { + gap = cy - abslines; + for(i = 0; i < gap; i++) { + if(lines > 0) { + row0 = y + i + lines; + row1 = y + i; + } else { + row0 = (y - i - 1) + lines; + row1 = (y - i - 1); + } + + /* read row0 into the buffer and then write at row1*/ + set_viewport(x, row0, cx, 1); + stream_start(); + j = read_data(); // dummy read + for (j = 0; j < cx; j++) + buf[j] = read_data(); + stream_stop(); + + set_viewport(x, row1, cx, 1); + stream_start(); + for (j = 0; j < cx; j++) + write_data(buf[j]); + stream_stop(); + } + } + + /* fill the remaining gap */ + set_viewport(x, lines > 0 ? (y+gap) : y, cx, abslines); + stream_start(); + gap = cx*abslines; + for(i = 0; i < gap; i++) write_data(bgcolor); + stream_stop(); + release_bus(); + } +#endif + +#if (GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL) || defined(__DOXYGEN__) + /** + * @brief Driver Control + * @details Unsupported control codes are ignored. + * @note The value parameter should always be typecast to (void *). + * @note There are some predefined and some specific to the low level driver. + * @note GDISP_CONTROL_POWER - Takes a gdisp_powermode_t + * GDISP_CONTROL_ORIENTATION - Takes a gdisp_orientation_t + * GDISP_CONTROL_BACKLIGHT - Takes an int from 0 to 100. For a driver + * that only supports off/on anything other + * than zero is on. + * GDISP_CONTROL_CONTRAST - Takes an int from 0 to 100. + * GDISP_CONTROL_LLD - Low level driver control constants start at + * this value. + * + * @param[in] what What to do. + * @param[in] value The value to use (always cast to a void *). + * + * @notapi + */ + void gdisp_lld_control(unsigned what, void *value) { + switch(what) { + case GDISP_CONTROL_POWER: + if (GDISP.Powermode == (gdisp_powermode_t)value) + return; + switch((gdisp_powermode_t)value) { + case powerOff: + acquire_bus(); + write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0001); // enter sleep mode + write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0000); // halt operation + write_reg(SSD2119_REG_OSC_START, 0x0000); // turn off oszcillator + set_backlight(0); + delayms(500); + release_bus(); + break; + case powerOn: + acquire_bus(); + write_reg(0x0010, 0x0000); // leave sleep mode + release_bus(); + if (GDISP.Powermode != powerSleep) + gdisp_lld_init(); + set_backlight(100); + break; + case powerSleep: + acquire_bus(); + write_reg(0x0010, 0x0001); // enter sleep mode + release_bus(); + break; + default: + return; + } + GDISP.Powermode = (gdisp_powermode_t)value; + return; + case GDISP_CONTROL_ORIENTATION: + if (GDISP.Orientation == (gdisp_orientation_t)value) + return; + switch((gdisp_orientation_t)value) { + case GDISP_ROTATE_0: + acquire_bus(); + write_reg(0x0001, 0x2B3F); + /* ID = 11 AM = 0 */ + write_reg(0x0011, 0x6070); + release_bus(); + GDISP.Height = GDISP_SCREEN_HEIGHT; + GDISP.Width = GDISP_SCREEN_WIDTH; + break; + case GDISP_ROTATE_90: + acquire_bus(); + write_reg(0x0001, 0x293F); + /* ID = 11 AM = 1 */ + write_reg(0x0011, 0x6078); + release_bus(); + GDISP.Height = GDISP_SCREEN_WIDTH; + GDISP.Width = GDISP_SCREEN_HEIGHT; + break; + case GDISP_ROTATE_180: + acquire_bus(); + write_reg(0x0001, 0x2B3F); + /* ID = 01 AM = 0 */ + write_reg(0x0011, 0x6040); + release_bus(); + GDISP.Height = GDISP_SCREEN_HEIGHT; + GDISP.Width = GDISP_SCREEN_WIDTH; + break; + case GDISP_ROTATE_270: + acquire_bus(); + write_reg(0x0001, 0x293F); + /* ID = 01 AM = 1 */ + write_reg(0x0011, 0x6048); + release_bus(); + GDISP.Height = GDISP_SCREEN_WIDTH; + GDISP.Width = GDISP_SCREEN_HEIGHT; + break; + default: + return; + } + #if GDISP_NEED_CLIP || GDISP_NEED_VALIDATION + GDISP.clipx0 = 0; + GDISP.clipy0 = 0; + GDISP.clipx1 = GDISP.Width; + GDISP.clipy1 = GDISP.Height; + #endif + GDISP.Orientation = (gdisp_orientation_t)value; + return; + case GDISP_CONTROL_BACKLIGHT: + if ((unsigned)value > 100) { + value = (void *) 100; + } + set_backlight((unsigned)value); + GDISP.Backlight = (unsigned)value; + break; +/* + case GDISP_CONTROL_CONTRAST: +*/ + } + } +#endif + +#endif /* GFX_USE_GDISP */ +/** @} */ -- cgit v1.2.3