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ugfx/drivers/gdisp/Nokia6610GE8/gdisp_lld.c
Joel Bodenmann 6c38d5b310 updated license headers
2013-05-03 16:36:17 +02:00

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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/Nokia6610GE8/gdisp_lld.c
* @brief GDISP Graphics Driver subsystem low level driver source for the Nokia6610 GE8 display.
*
* @addtogroup GDISP
* @{
*/
#include "ch.h"
#include "hal.h"
#include "gfx.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. */
/*===========================================================================*/
#include "GE8.h"
/* This controller is only ever used with a 130 x 130 display */
#if defined(GDISP_SCREEN_HEIGHT)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GDISP_SCREEN_HEIGHT
#endif
#if defined(GDISP_SCREEN_WIDTH)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GDISP_SCREEN_WIDTH
#endif
#define GDISP_SCREEN_HEIGHT 130
#define GDISP_SCREEN_WIDTH 130
#define GDISP_SCAN_LINES 132 /* 130 lines + 2 invisible lines */
#define GDISP_RAM_X_OFFSET 0 /* Offset in RAM of visible area */
#define GDISP_RAM_Y_OFFSET 2 /* Offset in RAM of visible area */
#define GDISP_SLEEP_SIZE 32 /* Sleep mode window lines */
#define GDISP_SLEEP_POS ((GDISP_SCAN_LINES-GDISP_SLEEP_SIZE)/2)
#define GDISP_INITIAL_CONTRAST 38
#define GDISP_INITIAL_BACKLIGHT 100
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* 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_OLIMEX_SAM7_EX256)
#include "gdisp_lld_board_olimexsam7ex256.h"
#else
/* Include the user supplied board definitions */
#include "gdisp_lld_board.h"
#endif
// Some macros just to make reading the code easier
#define delayms(ms) chThdSleepMilliseconds(ms)
#define write_data2(d1, d2) { write_data(d1); write_data(d2); }
#define write_data3(d1, d2, d3) { write_data(d1); write_data(d2); write_data(d3); }
#define write_data4(d1, d2, d3, d4) { write_data(d1); write_data(d2); write_data(d3); write_data(d4); }
#define write_cmd1(cmd, d1) { write_cmd(cmd); write_data(d1); }
#define write_cmd2(cmd, d1, d2) { write_cmd(cmd); write_data2(d1, d2); }
#define write_cmd3(cmd, d1, d2, d3) { write_cmd(cmd); write_data3(d1, d2, d3); }
#define write_cmd4(cmd, d1, d2, d3, d4) { write_cmd(cmd); write_data4(d1, d2, d3, d4); }
// Set the drawing window on the controller.
// An inline function has been used here incase the parameters have side effects with the internal calculations.
static __inline void setviewport(coord_t x, coord_t y, coord_t cx, coord_t cy) {
switch(GDISP.Orientation) {
case GDISP_ROTATE_0:
write_cmd2(CASET, GDISP_RAM_X_OFFSET+x, GDISP_RAM_X_OFFSET+x+cx-1); // Column address set
write_cmd2(PASET, GDISP_RAM_Y_OFFSET+y, GDISP_RAM_Y_OFFSET+y+cy-1); // Page address set
break;
case GDISP_ROTATE_90:
write_cmd2(CASET, GDISP_RAM_X_OFFSET+GDISP.Height-y-cy, GDISP_RAM_X_OFFSET+GDISP.Height-y-1);
write_cmd2(PASET, GDISP_RAM_Y_OFFSET+x, GDISP_RAM_Y_OFFSET+x+cx-1);
break;
case GDISP_ROTATE_180:
write_cmd2(CASET, GDISP_RAM_X_OFFSET+GDISP.Width-x-cx, GDISP_RAM_X_OFFSET+GDISP.Width-x-1);
write_cmd2(PASET, GDISP_RAM_Y_OFFSET+GDISP.Height-y-cy, GDISP_RAM_Y_OFFSET+GDISP.Height-y-1);
break;
case GDISP_ROTATE_270:
write_cmd2(CASET, GDISP_RAM_X_OFFSET+y, GDISP_RAM_X_OFFSET+y+cy-1);
write_cmd2(PASET, GDISP_RAM_Y_OFFSET+GDISP.Width-x-cx, GDISP_RAM_Y_OFFSET+GDISP.Width-x-1);
break;
}
}
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level GDISP driver initialisation.
*
* @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();
write_cmd4(DISCTL, 0x00, GDISP_SCAN_LINES/4-1, 0x0A, 0x00); // Display control - How the controller drives the LCD
// P1: 0x00 = 2 divisions, switching period=8 (default)
// P2: 0x20 = nlines/4 - 1 = 132/4 - 1 = 32)
// P3: 0x0A = standard inverse highlight, inversion every frame
// P4: 0x00 = dispersion on
write_cmd1(COMSCN, 0x01); // COM scan - How the LCD is connected to the controller
// P1: 0x01 = Scan 1->80, 160<-81
write_cmd(OSCON); // Internal oscillator ON
write_cmd(SLPOUT); // Sleep out
write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
write_cmd3(DATCTL, 0x00, 0x00, 0x02); // Data control
// P1: 0x00 = page address normal, column address normal, address scan in column direction
// P2: 0x00 = RGB sequence (default value)
// P3: 0x02 = 4 bits per colour (Type A)
write_cmd2(VOLCTR, GDISP_INITIAL_CONTRAST, 0x03); // Voltage control (contrast setting)
// P1 = Contrast
// P2 = 3 resistance ratio (only value that works)
delayms(100); // Allow power supply to stabilise
write_cmd(DISON); // Turn on the display
// Release the bus
release_bus();
/* Turn on the back-light */
set_backlight(GDISP_INITIAL_BACKLIGHT);
/* Initialise the GDISP structure to match */
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();
setviewport(x, y, 1, 1);
write_cmd3(RAMWR, 0, (color>>8) & 0x0F, color & 0xFF);
release_bus();
}
/* ---- Optional Routines ---- */
#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__)
/**
* @brief Fill an area with a color.
*
* @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 tuples;
#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
tuples = (cx*cy+1)>>1; // With an odd sized area we over-print by one pixel.
// This extra pixel overwrites the first pixel (harmless as it is the same colour)
acquire_bus();
setviewport(x, y, cx, cy);
write_cmd(RAMWR);
while(tuples--)
write_data3(((color >> 4) & 0xFF), (((color << 4) & 0xF0)|((color >> 8) & 0x0F)), (color & 0xFF));
release_bus();
}
#endif
#if GDISP_HARDWARE_BITFILLS || defined(__DOXYGEN__)
/**
* @brief Fill an area with a bitmap.
*
* @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 lg;
color_t c1, c2;
unsigned tuples;
#if GDISP_PACKED_PIXELS
unsigned pnum, pstart;
const uint8_t *p;
#else
const pixel_t *p;
#endif
#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
/* Set up the data window to transfer */
tuples = (cx * cy + 1)>>1;
acquire_bus();
setviewport(x, y, cx, cy);
write_cmd(RAMWR);
/*
* Due to the way the Nokia6610 handles a decrementing column or page,
* we have to make adjustments as to where it is actually drawing from in the bitmap.
* For example, for 90 degree rotation the column is decremented on each
* memory write. The controller always starts with column 0 and then decrements
* to column cx-1, cx-2 etc. We therefore have to write-out the last bitmap line first.
*/
switch(GDISP.Orientation) {
case GDISP_ROTATE_0: x = 0; y = 0; break;
case GDISP_ROTATE_90: x = 0; y = cy-1; break;
case GDISP_ROTATE_180: x = cx-1; y = cy-1; break;
case GDISP_ROTATE_270: x = cx-1; y = 0; break;
}
#if !GDISP_PACKED_PIXELS
// Although this controller uses packed pixels we support unpacked pixel
// formats in this blit by packing the data as we feed it to the controller.
lg = srccx - cx; // The buffer gap between lines
buffer += srcy * srccx + srcx; // The buffer start position
p = buffer + srccx*y + x; // Adjustment for controller craziness
while(tuples--) {
/* Get a pixel */
c1 = *p++;
/* Check for line or buffer wrapping */
if (++x >= cx) {
x = 0;
p += lg;
if (++y >= cy) {
y = 0;
p = buffer;
}
}
/* Get the next pixel */
c2 = *p++;
/* Check for line or buffer wrapping */
if (++x >= cx) {
x = 0;
p += lg;
if (++y >= cy) {
y = 0;
p = buffer;
}
}
/* Write the pair of pixels to the display */
write_data3(((c1 >> 4) & 0xFF), (((c1 << 4) & 0xF0)|((c2 >> 8) & 0x0F)), (c2 & 0xFF));
}
#else
// Although this controller uses packed pixels, we may have to feed it into
// the controller with different packing to the source bitmap
// There are 2 pixels per 3 bytes
#if !GDISP_PACKED_LINES
srccx = (srccx + 1) & ~1;
#endif
pstart = srcy * srccx + srcx; // The starting pixel number
buffer = (const pixel_t)(((const uint8_t *)buffer) + ((pstart>>1) * 3)); // The buffer start position
lg = ((srccx-cx)>>1)*3; // The buffer gap between lines
pnum = pstart + srccx*y + x; // Adjustment for controller craziness
p = ((const uint8_t *)buffer) + (((srccx*y + x)>>1)*3); // Adjustment for controller craziness
while (tuples--) {
/* Get a pixel */
switch(pnum++ & 1) {
case 0: c1 = (((color_t)p[0]) << 4)|(((color_t)p[1])>>4); break;
case 1: c1 = (((color_t)p[1]&0x0F) << 8)|((color_t)p[1]); p += 3; break;
}
/* Check for line or buffer wrapping */
if (++x >= cx) {
x = 0;
p += lg;
pnum += srccx - cx;
if (++y >= cy) {
y = 0;
p = (const uint8_t *)buffer;
pnum = pstart;
}
}
/* Get the next pixel */
switch(pnum++ & 1) {
case 0: c1 = (((color_t)p[0]) << 4)|(((color_t)p[1])>>4); break;
case 1: c1 = (((color_t)p[1]&0x0F) << 8)|((color_t)p[1]); p += 3; break;
}
/* Check for line or buffer wrapping */
if (++x >= cx) {
x = 0;
p += lg;
pnum += srccx - cx;
if (++y >= cy) {
y = 0;
p = (const uint8_t *)buffer;
pnum = pstart;
}
}
/* Write the pair of pixels to the display */
write_data3(((c1 >> 4) & 0xFF), (((c1 << 4) & 0xF0)|((c2 >> 8) & 0x0F)), (c2 & 0xFF));
}
#endif
/* All done */
release_bus();
}
#endif
#if (GDISP_NEED_PIXELREAD && GDISP_HARDWARE_PIXELREAD)
/**
* @brief Get the color of a particular pixel.
* @note If x,y is off the screen, the result is undefined.
*
* @param[in] x, y The start of the text
*
* @notapi
*/
color_t gdisp_lld_get_pixel_color(coord_t x, coord_t y) {
/* NOT IMPLEMENTED */
/* This controller does not support reading back over the SPI interface.
* Additionally, the Olimex board doesn't even connect the pin.
*/
}
#endif
#if (GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL)
/**
* @brief Scroll vertically a section of the screen.
* @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) {
/* NOT IMPLEMENTED */
/**
* The hardware is capable of doing full width vertical scrolls aligned
* on a 4 line boundary however that is not sufficient to support this routine.
*
* We also can't manually do read/modify scrolling because we can't read in SPI mode.
*/
}
#endif
#if 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) {
/* The hardware is capable of supporting...
* GDISP_CONTROL_POWER - supported
* GDISP_CONTROL_ORIENTATION - supported
* GDISP_CONTROL_BACKLIGHT - supported
* GDISP_CONTROL_CONTRAST - supported
*/
switch(what) {
case GDISP_CONTROL_POWER:
if (GDISP.Powermode == (gdisp_powermode_t)value)
return;
acquire_bus();
switch((gdisp_powermode_t)value) {
case powerOff:
set_backlight(0); // Turn off the backlight
write_cmd(DISOFF); // Turn off the display
write_cmd1(PWRCTR, 0x00); // Power control - all off
write_cmd(SLPIN); // Sleep in
write_cmd(OSCOFF); // Internal oscillator off
break;
case powerOn:
write_cmd(OSCON); // Internal oscillator on
write_cmd(SLPOUT); // Sleep out
write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
write_cmd2(VOLCTR, GDISP.Contrast, 0x03); // Voltage control (contrast setting)
delayms(100); // Allow power supply to stabilise
write_cmd(DISON); // Turn on the display
write_cmd(PTLOUT); // Remove sleep window
set_backlight(GDISP.Backlight); // Turn on the backlight
break;
case powerSleep:
write_cmd(OSCON); // Internal oscillator on
write_cmd(SLPOUT); // Sleep out
write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
write_cmd2(VOLCTR, GDISP.Contrast, 0x03); // Voltage control (contrast setting)
delayms(100); // Allow power supply to stabilise
write_cmd(DISON); // Turn on the display
write_cmd2(PTLIN, GDISP_SLEEP_POS/4, (GDISP_SLEEP_POS+GDISP_SLEEP_SIZE)/4); // Sleep Window
set_backlight(GDISP.Backlight); // Turn on the backlight
break;
case powerDeepSleep:
write_cmd(OSCON); // Internal oscillator on
write_cmd(SLPOUT); // Sleep out
write_cmd1(PWRCTR, 0x0F); // Power control - reference voltage regulator on, circuit voltage follower on, BOOST ON
write_cmd2(VOLCTR, GDISP.Contrast, 0x03); // Voltage control (contrast setting)
delayms(100); // Allow power supply to stabilise
write_cmd(DISON); // Turn on the display
write_cmd2(PTLIN, GDISP_SLEEP_POS/4, (GDISP_SLEEP_POS+GDISP_SLEEP_SIZE)/4); // Sleep Window
set_backlight(0); // Turn off the backlight
break;
default:
release_bus();
return;
}
release_bus();
GDISP.Powermode = (gdisp_powermode_t)value;
return;
case GDISP_CONTROL_ORIENTATION:
if (GDISP.Orientation == (gdisp_orientation_t)value)
return;
acquire_bus();
switch((gdisp_orientation_t)value) {
case GDISP_ROTATE_0:
write_cmd3(DATCTL, 0x00, 0x00, 0x02); // P1: page normal, column normal, scan in column direction
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
write_cmd3(DATCTL, 0x06, 0x00, 0x02); // P1: page normal, column reverse, scan in page direction
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
write_cmd3(DATCTL, 0x03, 0x00, 0x02); // P1: page reverse, column reverse, scan in column direction
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
write_cmd3(DATCTL, 0x05, 0x00, 0x02); // P1: page reverse, column normal, scan in page direction
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
default:
release_bus();
return;
}
release_bus();
#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;
case GDISP_CONTROL_CONTRAST:
if ((unsigned)value > 100) value = (void *)100;
acquire_bus();
write_cmd2(VOLCTR, (unsigned)value, 0x03);
release_bus();
GDISP.Contrast = (unsigned)value;
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
/** @} */
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