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SSD1312: wip

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This commit is contained in:
Joel Bodenmann 2023-10-25 18:18:47 +02:00
parent f1a34c9852
commit c2f2ab63e1
6 changed files with 475 additions and 0 deletions
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BIN
drivers/gdisp/SSD1312/.gdisp_lld_SSD1312.c.swp Normal file
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drivers/gdisp/SSD1312/SSD1312.h Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.io/license.html
*/
#ifndef _SSD1322_H
#define _SSD1322_H
#define CMD_DISPLAY_START_LINE 0x40
#define CMD_CONTRAST_CONTROL 0x81
#define CMD_CHARGE_PUMP 0x8D
#define CMD_SEGMENT_REMAP 0xA1
#define CMD_MULTIPLEX_RATIO 0xA8
#define CMD_REFERENCE 0xAD
#define CMD_DISPLAY_OFF 0xAE
#define CMD_DISPLAY_ON 0xAF
#define CMD_COM_OUTPUT_SCAN_DIR 0xC0
#define CMD_DISPLAY_OFFSET 0xD3
#define CMD_CLOCK_DIVIDER 0xD5
#define CMD_PRECHARGE_PERIOD 0xD9
#define CMD_COM_HARDWARE_CFG 0xDA
#define CMD_VCOMH_SELECT_LEVEL 0xDB
#define CMD_LOCK 0xFD
#endif /* _SSD1322_H */

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drivers/gdisp/SSD1312/board_SSD1312_template.h Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.io/license.html
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
static GFXINLINE void init_board(GDisplay *g)
{
(void) g;
}
static GFXINLINE void post_init_board(GDisplay *g)
{
(void) g;
}
static GFXINLINE void setpin_reset(GDisplay *g, gBool state)
{
(void) g;
(void) state;
}
static GFXINLINE void acquire_bus(GDisplay *g)
{
(void) g;
}
static GFXINLINE void release_bus(GDisplay *g)
{
(void) g;
}
static GFXINLINE void write_cmd(GDisplay *g, gU8 cmd)
{
(void) g;
(void) cmd;
}
static GFXINLINE void write_data(GDisplay *g, gU8 data)
{
(void) g;
(void) data;
}
#endif // _GDISP_LLD_BOARD_H

3
drivers/gdisp/SSD1312/driver.mk Normal file
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GFXINC += $(GFXLIB)/drivers/gdisp/SSD1312
GFXSRC += $(GFXLIB)/drivers/gdisp/SSD1312/gdisp_lld_SSD1312.c

366
drivers/gdisp/SSD1312/gdisp_lld_SSD1312.c Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.io/license.html
*/
#include "gfx.h"
#if GFX_USE_GDISP
#define GDISP_DRIVER_VMT GDISPVMT_SSD1312
#include "gdisp_lld_config.h"
#include "../../../src/gdisp/gdisp_driver.h"
#include "board_SSD1312.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 32 // This controller should also support 64 (untested)
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 128
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 100
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
#ifdef SSD1312_PAGE_PREFIX
#define SSD1312_PAGE_WIDTH (GDISP_SCREEN_WIDTH+1)
#define SSD1312_PAGE_OFFSET 1
#else
#define SSD1312_PAGE_WIDTH GDISP_SCREEN_WIDTH
#define SSD1312_PAGE_OFFSET 0
#endif
#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0)
#include "SSD1312.h"
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
// Some common routines and macros
#define RAM(g) ((gU8 *)g->priv)
#define xyaddr(x, y) (SSD1312_PAGE_OFFSET + (x) + ((y)>>3)*SSD1312_PAGE_WIDTH)
#define xybit(y) (1<<((y)&7))
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* As this controller can't update on a pixel boundary we need to maintain the
* the entire display surface in memory so that we can do the necessary bit
* operations. Fortunately it is a small display in 4 bit grayscale.
* 64 * 128 / 2 = 4096 bytes.
*/
LLDSPEC gBool gdisp_lld_init(GDisplay *g)
{
// The private area is the display surface.
g->priv = gfxAlloc(GDISP_SCREEN_HEIGHT/8 * SSD1312_PAGE_WIDTH);
// Fill in the prefix command byte on each page line of the display buffer
// We can do it during initialisation as this byte is never overwritten.
#ifdef SSD1312_PAGE_PREFIX
for (unsigned i = 0; i < GDISP_SCREEN_HEIGHT/8 * SSD1312_PAGE_WIDTH; i += SSD1312_PAGE_WIDTH)
RAM(g)[i] = SSD1312_PAGE_PREFIX;
#endif
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, gTrue);
gfxSleepMilliseconds(20);
setpin_reset(g, gFalse);
gfxSleepMilliseconds(200);
// Display off
write_cmd(g, 0xAE);
// Clock divider
write_cmd2(g, 0xD5, 0x80);
// Multiplex ratio
write_cmd2(g, 0xA8, 0x1F);
// Display offset
write_cmd2(g, 0xD3, 0x30);
// Display start line
write_cmd(g, 0x40);
// Charge pump
write_cmd2(g, 0x8D, 0x72); // 0x10 if Vcc externally supplied
// Segment re-map
write_cmd(g, 0xA1);
// COM output scan direction
write_cmd(g, 0xC0);
// COM pin hardware configuration
write_cmd2(g, 0xDA, 0x10);
// Set internal/external current reference
write_cmd2(g, 0xAD, 0x50);
// Set contract
// ToDo: Also add to GDISP control interface below
write_cmd2(g, 0x81, 0x17);
// Set pre-charge period
write_cmd2(g, 0xD9, 0xF1);
// Set VCOMH select level
write_cmd2(g, 0xDB, 0x30);
// Set entire display on/off
write_cmd(g, 0xA4);
// Set normal/inverse display
write_cmd(g, 0xA6);
// Display on
write_cmd(g, 0xAF);
// Finish Init
post_init_board(g);
// Initialise the GDISP structure
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Orientation = gOrientation0;
g->g.Powermode = gPowerOn;
g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
g->g.Contrast = GDISP_INITIAL_CONTRAST;
return gTrue;
}
#if GDISP_HARDWARE_FLUSH
LLDSPEC void gdisp_lld_flush(GDisplay *g) {
gU8 * ram;
unsigned pages;
// Don't flush if we don't need it.
if (!(g->flags & GDISP_FLG_NEEDFLUSH))
return;
ram = RAM(g);
pages = GDISP_SCREEN_HEIGHT/8;
acquire_bus(g);
write_cmd(g, CMD_DISPLAY_START_LINE);
while (pages--) {
write_data(g, ram, SSD1312_PAGE_WIDTH);
ram += SSD1312_PAGE_WIDTH;
}
release_bus(g);
g->flags &= ~GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_HARDWARE_FILLS
LLDSPEC void gdisp_lld_fill_area(GDisplay *g) {
gCoord sy, ey;
gCoord sx, ex;
gCoord col;
unsigned spage, zpages;
gU8 * base;
gU8 mask;
switch(g->g.Orientation) {
default:
case gOrientation0:
sx = g->p.x;
ex = g->p.x + g->p.cx - 1;
sy = g->p.y;
ey = sy + g->p.cy - 1;
break;
case gOrientation90:
sx = g->p.y;
ex = g->p.y + g->p.cy - 1;
sy = GDISP_SCREEN_HEIGHT - g->p.x - g->p.cx;
ey = GDISP_SCREEN_HEIGHT-1 - g->p.x;
break;
case gOrientation180:
sx = GDISP_SCREEN_WIDTH - g->p.x - g->p.cx;
ex = GDISP_SCREEN_WIDTH-1 - g->p.x;
sy = GDISP_SCREEN_HEIGHT - g->p.y - g->p.cy;
ey = GDISP_SCREEN_HEIGHT-1 - g->p.y;
break;
case gOrientation270:
sx = GDISP_SCREEN_WIDTH - g->p.y - g->p.cy;
ex = GDISP_SCREEN_WIDTH-1 - g->p.y;
sy = g->p.x;
ey = g->p.x + g->p.cx - 1;
break;
}
spage = sy / 8;
base = RAM(g) + SSD1312_PAGE_OFFSET + SSD1312_PAGE_WIDTH * spage;
mask = 0xff << (sy&7);
zpages = (ey / 8) - spage;
if (gdispColor2Native(g->p.color) == gdispColor2Native(GFX_BLACK)) {
while (zpages--) {
for (col = sx; col <= ex; col++)
base[col] &= ~mask;
mask = 0xff;
base += SSD1312_PAGE_WIDTH;
}
mask &= (0xff >> (7 - (ey&7)));
for (col = sx; col <= ex; col++)
base[col] &= ~mask;
} else {
while (zpages--) {
for (col = sx; col <= ex; col++)
base[col] |= mask;
mask = 0xff;
base += SSD1312_PAGE_WIDTH;
}
mask &= (0xff >> (7 - (ey&7)));
for (col = sx; col <= ex; col++)
base[col] |= mask;
}
g->flags |= GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
gCoord x, y;
switch(g->g.Orientation) {
default:
case gOrientation0:
x = g->p.x;
y = g->p.y;
break;
case gOrientation90:
x = g->p.y;
y = GDISP_SCREEN_HEIGHT-1 - g->p.x;
break;
case gOrientation180:
x = GDISP_SCREEN_WIDTH-1 - g->p.x;
y = GDISP_SCREEN_HEIGHT-1 - g->p.y;
break;
case gOrientation270:
x = GDISP_SCREEN_WIDTH-1 - g->p.y;
y = g->p.x;
break;
}
if (gdispColor2Native(g->p.color) != gdispColor2Native(GFX_BLACK))
RAM(g)[xyaddr(x, y)] |= xybit(y);
else
RAM(g)[xyaddr(x, y)] &= ~xybit(y);
g->flags |= GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_HARDWARE_PIXELREAD
LLDSPEC gColor gdisp_lld_get_pixel_color(GDisplay *g) {
gCoord x, y;
switch(g->g.Orientation) {
default:
case gOrientation0:
x = g->p.x;
y = g->p.y;
break;
case gOrientation90:
x = g->p.y;
y = GDISP_SCREEN_HEIGHT-1 - g->p.x;
break;
case gOrientation180:
x = GDISP_SCREEN_WIDTH-1 - g->p.x;
y = GDISP_SCREEN_HEIGHT-1 - g->p.y;
break;
case gOrientation270:
x = GDISP_SCREEN_WIDTH-1 - g->p.y;
y = g->p.x;
break;
}
return (RAM(g)[xyaddr(x, y)] & xybit(y)) ? GFX_WHITE : GFX_BLACK;
}
#endif
#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
LLDSPEC void gdisp_lld_control(GDisplay *g) {
switch(g->p.x) {
case GDISP_CONTROL_POWER:
if (g->g.Powermode == (gPowermode)g->p.ptr)
return;
switch((gPowermode)g->p.ptr) {
case gPowerOff:
case gPowerSleep:
case gPowerDeepSleep:
acquire_bus(g);
write_cmd(g, SSD1312_DISPLAYOFF);
release_bus(g);
break;
case gPowerOn:
acquire_bus(g);
write_cmd(g, SSD1312_DISPLAYON);
release_bus(g);
break;
default:
return;
}
g->g.Powermode = (gPowermode)g->p.ptr;
return;
case GDISP_CONTROL_ORIENTATION:
if (g->g.Orientation == (gOrientation)g->p.ptr)
return;
switch((gOrientation)g->p.ptr) {
/* Rotation is handled by the drawing routines */
case gOrientation0:
case gOrientation180:
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case gOrientation90:
case gOrientation270:
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
default:
return;
}
g->g.Orientation = (gOrientation)g->p.ptr;
return;
case GDISP_CONTROL_CONTRAST:
if ((unsigned)g->p.ptr > 100)
g->p.ptr = (void *)100;
acquire_bus(g);
write_cmd2(g, SSD1312_SETCONTRAST, (((unsigned)g->p.ptr)<<8)/101);
release_bus(g);
g->g.Contrast = (unsigned)g->p.ptr;
return;
// Our own special controller code to inverse the display
// 0 = normal, 1 = inverse
case GDISP_CONTROL_INVERSE:
acquire_bus(g);
write_cmd(g, g->p.ptr ? SSD1312_INVERTDISPLAY : SSD1312_NORMALDISPLAY);
release_bus(g);
return;
}
}
#endif // GDISP_NEED_CONTROL
#endif // GFX_USE_GDISP

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drivers/gdisp/SSD1312/gdisp_lld_config.h Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.io/license.html
*/
#ifndef _GDISP_LLD_CONFIG_H
#define _GDISP_LLD_CONFIG_H
#if GFX_USE_GDISP
/*===========================================================================*/
/* Driver hardware support. */
/*===========================================================================*/
#define GDISP_HARDWARE_FLUSH GFXON // This controller requires flushing
#define GDISP_HARDWARE_DRAWPIXEL GFXON
#define GDISP_HARDWARE_PIXELREAD GFXON
#define GDISP_HARDWARE_CONTROL GFXON
#define GDISP_HARDWARE_FILLS GFXON
#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_MONO
#endif /* GFX_USE_GDISP */
#endif /* _GDISP_LLD_CONFIG_H */