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Merged in pashamray/ugfx/pcd8544 (pull request #10)

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Driver for PCD8544 controller
This commit is contained in:
Joel Bodenman 2014-07-09 22:33:17 +02:00
commit 6925b4bfa6
5 changed files with 351 additions and 0 deletions
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45
drivers/gdisp/PCD8544/PCD8544.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.org/license.html
*/
#ifndef _PCD8544_H
#define _PCD8544_H
#define PCD8544_SET_FUNC 0x20 // Function set
#define PCD8544_H 0x01
#define PCD8544_V 0x02
#define PCD8544_PD 0x04
#define PCD8544_SET_DISPLAY 0x08
#define PCD8544_DISPLAY_MODE_BLANK 0x00 // bit D = 0, E = 0
#define PCD8544_DISPLAY_MODE_FILL 0x01 // bit D = 0, E = 1
#define PCD8544_DISPLAY_MODE_NORMAL 0x04 // bit D = 1, E = 0
#define PCD8544_DISPLAY_MODE_INVERT 0x05 // bit D = 1, E = 1
#define PCD8544_SET_Y 0x40 // 0 0 1 0 0 Y3 Y2 Y1 Y0
#define PCD8544_SET_X 0x80 // 0 1 X6 X5 X4 X3 X2 X1 X0
// =========================================
#define PCD8544_SET_TEMP 0x04 // set temperature coefficient (TCx)
#define PCD8544_TEMP_MODE_0 0x00 // TC1 = 0, TC0 = 0
#define PCD8544_TEMP_MODE_1 0x01 // TC1 = 0, TC0 = 1
#define PCD8544_TEMP_MODE_2 0x02 // TC1 = 1, TC0 = 0
#define PCD8544_TEMP_MODE_3 0x03 // TC1 = 1, TC0 = 1
#define PCD8544_SET_BIAS 0x10 // set bias system (BSx)
#define PCD8544_BIAS_MODE_7 0x00 // 1 to 100
#define PCD8544_BIAS_MODE_6 0x01 // 1 to 80
#define PCD8544_BIAS_MODE_5 0x02 // 1 to 65
#define PCD8544_BIAS_MODE_4 0x03 // 1 to 48
#define PCD8544_BIAS_MODE_3 0x04 // 1 to 40 or 1 to 34
#define PCD8544_BIAS_MODE_2 0x05 // 1 to 24
#define PCD8544_BIAS_MODE_1 0x06 // 1 to 18 or 1 to 16
#define PCD8544_BIAS_MODE_0 0x07 // 1 to 10 or 1 to 9 or 1 to 8
#define PCD8544_SET_VOP 0x80 // write VOP to register, 1 VOP6 VOP5 VOP4 VOP3 VOP2 VOP1 VOP0
#endif /* _PCD8544_H */

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drivers/gdisp/PCD8544/board_PCD8544_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.org/license.html
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
static inline void init_board(GDisplay *g) {
(void) g;
}
static inline void post_init_board(GDisplay *g) {
(void) g;
}
static inline void setpin_reset(GDisplay *g, bool_t state) {
(void) g;
(void) state;
}
static inline void acquire_bus(GDisplay *g) {
(void) g;
}
static inline void release_bus(GDisplay *g) {
(void) g;
}
static inline void write_cmd(GDisplay *g, uint8_t cmd) {
(void) g;
(void) cmd;
}
static inline void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
(void) g;
(void) data;
(void) length;
}
#endif /* _GDISP_LLD_BOARD_H */

2
drivers/gdisp/PCD8544/driver.mk Normal file
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GFXINC += $(GFXLIB)/drivers/gdisp/PCD8544
GFXSRC += $(GFXLIB)/drivers/gdisp/PCD8544/gdisp_lld_PCD8544.c

233
drivers/gdisp/PCD8544/gdisp_lld_PCD8544.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.org/license.html
*/
#include "gfx.h"
#if GFX_USE_GDISP
#define GDISP_DRIVER_VMT GDISPVMT_PCD8544
#include "drivers/gdisp/PCD8544/gdisp_lld_config.h"
#include "src/gdisp/driver.h"
#include "board_PCD8544.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#define GDISP_SCREEN_HEIGHT 48
#define GDISP_SCREEN_WIDTH 84
#define GDISP_INITIAL_CONTRAST 51
#define GDISP_INITIAL_BACKLIGHT 100
#define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER << 0)
#include "drivers/gdisp/PCD8544/PCD8544.h"
/*===========================================================================*/
/* Driver local routines . */
/*===========================================================================*/
// Some common routines and macros
#define RAM(g) ((uint8_t *)g->priv)
#define xyaddr(x, y) ((x) + ((y) >> 3) * GDISP_SCREEN_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 monochrome.
* Display 48 * 84 / 8 = 504
*/
#define GDISP_SCREEN_BYTES ((GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT) / 8)
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// The private area is the display surface.
if (!(g->priv = gfxAlloc(GDISP_SCREEN_BYTES)))
gfxHalt("GDISP PCD8544: Failed to allocate private memory");
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(100);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(100);
acquire_bus(g);
write_cmd(g, PCD8544_SET_FUNC | PCD8544_H);
write_cmd(g, PCD8544_SET_TEMP | PCD8544_TEMP_MODE_2);
write_cmd(g, PCD8544_SET_BIAS | PCD8544_BIAS_MODE_4);
write_cmd(g, PCD8544_SET_VOP | (0x40));
write_cmd(g, PCD8544_SET_FUNC);
write_cmd(g, PCD8544_SET_DISPLAY | PCD8544_DISPLAY_MODE_NORMAL);
write_cmd(g, PCD8544_SET_X); // X = 0
write_cmd(g, PCD8544_SET_Y); // Y = 0
coord_t i;
for (i = 0; i < GDISP_SCREEN_BYTES; i++) {
write_data(g, 0x00, 1);
}
// Finish Init
post_init_board(g);
// Release the bus
release_bus(g);
/* Turn on the back-light */
set_backlight(g, GDISP_INITIAL_BACKLIGHT);
/* Initialise the GDISP structure */
g->g.Width = GDISP_SCREEN_WIDTH;
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Orientation = GDISP_ROTATE_0;
g->g.Powermode = powerOn;
g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
g->g.Contrast = GDISP_INITIAL_CONTRAST;
return TRUE;
}
#if GDISP_HARDWARE_FLUSH
LLDSPEC void gdisp_lld_flush(GDisplay *g) {
// Don't flush if we don't need it.
if (!(g->flags & GDISP_FLG_NEEDFLUSH)) {
return;
}
acquire_bus(g);
write_cmd(g, PCD8544_SET_X | 0); // X = 0
write_cmd(g, PCD8544_SET_Y | 0); // Y = 0
coord_t i;
for (i = 0; i < GDISP_SCREEN_BYTES; i++) {
write_data(g, RAM(g)[i], 1);
}
release_bus(g);
}
#endif
#if GDISP_HARDWARE_DRAWPIXEL
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
coord_t x, y;
#if GDISP_NEED_CONTROL
switch(g->g.Orientation) {
default:
case GDISP_ROTATE_0:
x = g->p.x;
y = g->p.y;
break;
case GDISP_ROTATE_90:
x = g->p.y;
y = g->g.Width - g->p.x - 1;
break;
case GDISP_ROTATE_180:
x = g->g.Width - g->p.x - 1;
y = g->g.Height - g->p.y - 1;
break;
case GDISP_ROTATE_270:
x = g->g.Height - g->p.y - 1;
y = g->p.x;
break;
}
#else
x = g->p.x;
y = g->p.y;
#endif
if (gdispColor2Native(g->p.color) != Black) {
RAM(g)[xyaddr(x, y)] |= xybit(y);
} else {
RAM(g)[xyaddr(x, y)] &= ~xybit(y);
}
g->flags |= GDISP_FLG_NEEDFLUSH;
}
#endif
#if GDISP_NEED_CONTROL
LLDSPEC void gdisp_lld_control(GDisplay *g) {
switch(g->p.x) {
case GDISP_CONTROL_POWER:
if (g->g.Powermode == (powermode_t)g->p.ptr)
return;
switch((powermode_t)g->p.ptr) {
case powerOff:
case powerSleep:
case powerDeepSleep:
write_cmd(g, PCD8544_SET_FUNC | PCD8544_PD);
break;
case powerOn:
write_cmd(g, PCD8544_SET_FUNC);
break;
default:
return;
}
g->g.Powermode = (powermode_t)g->p.ptr;
return;
case GDISP_CONTROL_ORIENTATION:
if (g->g.Orientation == (orientation_t)g->p.ptr)
return;
switch((orientation_t)g->p.ptr) {
case GDISP_ROTATE_0:
case GDISP_ROTATE_180:
if (g->g.Orientation == GDISP_ROTATE_90 || g->g.Orientation == GDISP_ROTATE_270) {
coord_t tmp;
tmp = g->g.Width;
g->g.Width = g->g.Height;
g->g.Height = tmp;
}
break;
case GDISP_ROTATE_90:
case GDISP_ROTATE_270:
if (g->g.Orientation == GDISP_ROTATE_0 || g->g.Orientation == GDISP_ROTATE_180) {
coord_t tmp;
tmp = g->g.Width;
g->g.Width = g->g.Height;
g->g.Height = tmp;
}
break;
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
return;
case GDISP_CONTROL_BACKLIGHT:
if ((unsigned)g->p.ptr > 100) g->p.ptr = (void *)100;
set_backlight(g, (unsigned)g->p.ptr);
g->g.Backlight = (unsigned)g->p.ptr;
return;
case GDISP_CONTROL_CONTRAST:
if ((unsigned)g->p.ptr > 100) g->p.ptr = (void *)100;
write_cmd(g, PCD8544_SET_VOP | (unsigned)g->p.ptr);
g->g.Contrast = (unsigned)g->p.ptr;
return;
}
}
#endif
#endif // GFX_USE_GDISP

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drivers/gdisp/PCD8544/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.org/license.html
*/
#ifndef _GDISP_LLD_CONFIG_H
#define _GDISP_LLD_CONFIG_H
#if GFX_USE_GDISP
/*===========================================================================*/
/* Driver hardware support. */
/*===========================================================================*/
#define GDISP_HARDWARE_FLUSH TRUE // This controller requires flushing
#define GDISP_HARDWARE_DRAWPIXEL TRUE
#define GDISP_HARDWARE_CONTROL TRUE
// Set this to your frame buffer pixel format.
#ifndef GDISP_LLD_PIXELFORMAT
#define GDISP_LLD_PIXELFORMAT GDISP_PIXELFORMAT_MONO
#endif
#endif /* GFX_USE_GDISP */
#endif /* _GDISP_LLD_CONFIG_H */