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ugfx/drivers/gdisp/SSD2119/gdisp_lld.c
inmarket 7fbfde42aa GOS module, for operating system independance 
GMISC fast floating point trig
GMISC fast fixed point trig
2013-05-25 01:26:52 +10:00

656 lines
19 KiB
C
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/*
* This file is subject to the terms of the GFX License, v1.0. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://chibios-gfx.com/license.html
*/
/**
* @file drivers/gdisp/SSD2119/gdisp_lld.c
* @brief GDISP Graphics Driver subsystem low level driver source for the SSD2119 display.
*
* @addtogroup GDISP
* @{
*/
#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"
#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) gfxSleepMicroseconds(us)
#define delayms(ms) gfxSleepMilliseconds(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, (((x + cx - 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 gdisp_lld_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 ((coord_t)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; (coord_t)j < cx; j++)
buf[j] = read_data();
stream_stop();
set_viewport(x, row1, cx, 1);
stream_start();
for (j = 0; (coord_t)j < cx; j++)
write_data(buf[j]);
stream_stop();
}
}
/* fill the remaining gap */
set_viewport(x, lines > 0 ? (y+(coord_t)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.
*
* @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); // Display off
write_reg(SSD2119_REG_OSC_START, 0x0000); // Turn off oscillator
release_bus();
set_backlight(0);
break;
case powerOn:
if (GDISP.Powermode == powerSleep) {
acquire_bus();
write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0000); // Leave sleep mode
write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0033); // Display on
release_bus();
delayms(170);
} else if (GDISP.Powermode == powerDeepSleep) {
acquire_bus();
write_reg(SSD2119_REG_SLEEP_MODE_2, 0x0999); // Disable deep sleep function
write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0000); // Leave sleep mode
write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0033); // Display on
release_bus();
delayms(170);
} else {
acquire_bus();
write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0000); // Leave sleep mode
release_bus();
gdisp_lld_init();
}
set_backlight(100);
break;
case powerSleep:
acquire_bus();
write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0001); // Enter sleep mode
write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0000); // Display off
release_bus();
set_backlight(0);
delayms(25);
break;
case powerDeepSleep:
acquire_bus();
write_reg(SSD2119_REG_SLEEP_MODE_1, 0x0001); // Enter sleep mode
write_reg(SSD2119_REG_SLEEP_MODE_2, 0x2999); // Enable deep sleep function
write_reg(SSD2119_REG_DISPLAY_CTRL, 0x0000); // Display off
release_bus();
set_backlight(0);
delayms(25);
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();
/* TB = 0 */
write_reg(SSD2119_REG_OUTPUT_CTRL, 0x30EF);
/* ID = 11 AM = 0 */
write_reg(SSD2119_REG_ENTRY_MODE, 0x6830);
release_bus();
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
acquire_bus();
/* TB = 1 */
write_reg(SSD2119_REG_OUTPUT_CTRL, 0x32EF);
/* ID = 10 AM = 1 */
write_reg(SSD2119_REG_ENTRY_MODE, 0x6828);
release_bus();
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
acquire_bus();
/* TB = 0 */
write_reg(SSD2119_REG_OUTPUT_CTRL, 0x30EF);
/* ID = 00 AM = 0 */
write_reg(SSD2119_REG_ENTRY_MODE, 0x6800);
release_bus();
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
acquire_bus();
/* TB = 1 */
write_reg(SSD2119_REG_OUTPUT_CTRL, 0x32EF);
/* ID = 01 AM = 1 */
write_reg(SSD2119_REG_ENTRY_MODE, 0x6818);
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;
return;
default:
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
/** @} */
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