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ugfx/drivers/gdisp/RA6963/gdisp_lld_RA6963.c

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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
*/
/* Robert Offner 2017
* This is a driver for the RA6963 or T6963 Displays.
* It should work with displays up to 240 pixel in width and 64 pixel in height
* ATTENTION some newer displays on ebay look like T6963 Type but they're not!
* They use a new controller: ST7920. These are easy to identify: NO CS pin but
* a PSB Pin which switches from parallel to serial communication mode.
* If it cost less than 10.- it is probably a ST7920.
*
* Version: 0.1
*
* History:
*
* v0.1 Initial Release
* .) tested with readback and without on a 72MHz STM32F103. Display ws a 128x64
* type Graphic LCD (Looks like KS0108 Types). STREAM_READ is not implemented.
*/
#include "gfx.h"
#if GFX_USE_GDISP
#define GDISP_DRIVER_VMT GDISPVMT_RA6963
#include "gdisp_lld_config.h"
#include "src/gdisp/gdisp_driver.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#if defined(GDISP_SCREEN_HEIGHT)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GISP_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
#include "board_RA6963.h"
// RA6963 Commands
//Register Setting
#define RA6963_SET_CURSOR_POINTER 0x21
#define RA6963_SET_OFFSET_REGISTER 0x22
#define RA6963_SET_ADDRESS_POINTER 0x24
//Set Control Word
#define RA6963_SET_TEXT_HOME_ADDRESS 0x40
#define RA6963_SET_TEXT_AREA 0x41
#define RA6963_SET_GRAPHIC_HOME_ADDRESS 0x42
#define RA6963_SET_GRAPHIC_AREA 0x43
//Mode Set
#define RA6963_MODE_SET 0x80
#define RA6963_MODE_OR 0x00
#define RA6963_MODE_XOR 0x01
#define RA6963_MODE_AND 0x03
#define RA6963_MODE_TEXT_ATTRIBUTE 0x04
#define RA6963_MODE_INTERNAL_CGROM 0x00
#define RA6963_MODE_EXTERNAL_CGRAM 0x08
//Display Mode
#define RA6963_DISPLAY_MODE 0x90
#define RA6963_CURSOR_BLINK_ON 0x01
#define RA6963_CURSOR_DISPLAY_ON 0x02
#define RA6963_TEXT_DISPLAY_ON 0x04
#define RA6963_GRAPHIC_DISPLAY_ON 0x08
//Cursor Pattern Select
#define RA6963_CURSOR_PATTERN_SELECT 0xA0
#define RA6963_CURSOR_1_LINE 0x00
#define RA6963_CURSOR_2_LINE 0x01
#define RA6963_CURSOR_3_LINE 0x02
#define RA6963_CURSOR_4_LINE 0x03
#define RA6963_CURSOR_5_LINE 0x04
#define RA6963_CURSOR_6_LINE 0x05
#define RA6963_CURSOR_7_LINE 0x06
#define RA6963_CURSOR_8_LINE 0x07
//Data Read/Write
#define RA6963_DATA_WRITE_AND_INCREMENT 0xC0
#define RA6963_DATA_READ_AND_INCREMENT 0xC1
#define RA6963_DATA_WRITE_AND_DECREMENT 0xC2
#define RA6963_DATA_READ_AND_DECREMENT 0xC3
#define RA6963_DATA_WRITE_AND_NONVARIALBE 0xC4
#define RA6963_DATA_READ_AND_NONVARIABLE 0xC5
//Data auto Read/Write
#define RA6963_SET_DATA_AUTO_WRITE 0xB0
#define RA6963_SET_DATA_AUTO_READ 0xB1
#define RA6963_AUTO_RESET 0xB2
//Screen Peek
#define RA6963_SCREEN_PEEK 0xE0
//Screen copy
#define RA6963_SCREEN_COPY 0xE8
// Status Register Bits
#define RA6963_STATUS_BUSY1 0x01
#define RA6963_STATUS_BUSY2 0x02
#define RA6963_STATUS_DARRDY 0x04
#define RA6963_STATUS_DAWRDY 0x08
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 64
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 128
#endif
#define RA6963_FONT_WIDTH 8
#define RA6963_GRAPHIC_AREA (GDISP_SCREEN_WIDTH / RA6963_FONT_WIDTH) //16
#define RA6963_TEXT_AREA (GDISP_SCREEN_WIDTH / RA6963_FONT_WIDTH) //16
#define RA6963_GRAPHIC_SIZE (RA6963_GRAPHIC_AREA * GDISP_SCREEN_HEIGHT) //1024
#define RA6963_TEXT_SIZE (RA6963_TEXT_AREA * (GDISP_SCREEN_HEIGHT/8))//128
//#define RA6963_TEXT_HOME 0
//#define RA6963_GRAPHIC_HOME (RA6963_TEXT_HOME + RA6963_TEXT_SIZE) //128
#define RA6963_GRAPHIC_HOME 0
#define RA6963_TEXT_HOME (RA6963_GRAPHIC_HOME + RA6963_GRAPHIC_SIZE)
//#define RA6963_OFFSET_REGISTER 2
#if (RA6963_NEED_READ == FALSE)
#define BUFFSZ (RA6963_GRAPHIC_SIZE)
#define RAM(g) ((uint8_t *)g->priv)
#define POS (((g->p.x) / RA6963_FONT_WIDTH) + ((g->p.y) * RA6963_GRAPHIC_AREA))
#endif
#ifndef GDISP_INITIAL_CONTRAST
#define GDISP_INITIAL_CONTRAST 50
#endif
#ifndef GDISP_INITIAL_BACKLIGHT
#define GDISP_INITIAL_BACKLIGHT 100
#endif
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
#ifndef write_data_repeat
#define write_data_repeat(g, data, count) { int i; for (i = 0; i < count; ++i) write_data (g, data); }
#endif
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
#if (RA6963_NEED_READ == FALSE)
// The private area is the display surface.
g->priv = gfxAlloc(BUFFSZ);
#else
g->priv = 0;
#endif
// Initialise the board interface
init_board(g);
#if RA6963_HAS_RESET //Make Hardware Reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(100);
setpin_reset(g, FALSE);
#endif
gfxSleepMilliseconds(50);
//RA6963 needs Data first THEN command!
write_data(g, (uint8_t)RA6963_GRAPHIC_HOME); //0
write_data(g, (uint8_t)(RA6963_GRAPHIC_HOME>>8)); //0
write_cmd(g, RA6963_SET_GRAPHIC_HOME_ADDRESS); //0x42
write_data(g, (uint8_t)RA6963_GRAPHIC_AREA); //16
write_data(g, 0); //0
write_cmd(g, RA6963_SET_GRAPHIC_AREA); //0x43
write_data(g, (uint8_t)RA6963_TEXT_HOME); //0x00
write_data(g, (uint8_t)(RA6963_TEXT_HOME>>8)); //0x04 = 0x400
write_cmd(g, RA6963_SET_TEXT_HOME_ADDRESS); //0x40
write_data(g, (uint8_t)RA6963_TEXT_AREA); //16
write_data(g, (uint8_t)(RA6963_TEXT_AREA>>8)); //0
write_cmd(g, RA6963_SET_TEXT_AREA); //0x41
/* write_data(g, (uint8_t)RA6963_OFFSET_REGISTER);
write_data(g, 0);
write_cmd(g, RA6963_SET_OFFSET_REGISTER);*/
write_data(g, 0x00);
write_data(g, 0x00);
write_cmd(g, RA6963_SET_ADDRESS_POINTER);
write_data(g, 0x00);
write_data(g, 0x00);
write_cmd(g, RA6963_SET_CURSOR_POINTER);
//write_cmd(g, RA6963_CURSOR_PATTERN_SELECT | RA6963_CURSOR_1_LINE);
write_cmd(g, RA6963_MODE_SET | RA6963_MODE_OR);
//write_cmd(g, RA6963_DISPLAY_MODE | RA6963_TEXT_DISPLAY_ON | RA6963_GRAPHIC_DISPLAY_ON);
write_cmd(g, RA6963_DISPLAY_MODE | RA6963_GRAPHIC_DISPLAY_ON);
// Finish Init
post_init_board(g);
#if RA6963_NEED_BACKLIGHT
// Turn on the back-light
set_backlight(g, GDISP_INITIAL_BACKLIGHT);
#endif
// 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;
}
static void set_viewport(GDisplay *g) {
if ((g->p.x >= GDISP_SCREEN_WIDTH) || (g->p.y >= GDISP_SCREEN_HEIGHT))
return; // 0 + ( x / 8 ) + ( y * 16 )
//uint16_t addr = (RA6963_GRAPHIC_HOME + ((g->p.x) / RA6963_FONT_WIDTH) + ((g->p.y) * RA6963_GRAPHIC_AREA));
uint16_t addr = (RA6963_GRAPHIC_HOME + ((g->p.x >> 3) + (g->p.y << 4)));
#warning "check function set_viewport about the shift operations if you change the resolution!"
write_data(g, (uint8_t)addr);
write_data(g, (uint8_t)(addr>>8));
write_cmd(g, RA6963_SET_ADDRESS_POINTER);
}
LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
uint8_t temp;
#if (RA6963_NEED_READ == FALSE)
temp = RAM(g)[POS];
#else
temp = read_data(g);
#endif
if (g->p.color != White) {
temp |= (1 << (RA6963_FONT_WIDTH - 1 - ((g->p.x) % RA6963_FONT_WIDTH)));
}
else {
temp &= ~(1 << (RA6963_FONT_WIDTH - 1 - ((g->p.x) % RA6963_FONT_WIDTH)));
}
write_data(g, temp);
#if (RA6963_NEED_READ == FALSE)
RAM(g)[POS] = temp;
#endif
//write_cmd(g, RA6963_DATA_WRITE_AND_INCREMENT);
write_cmd(g, RA6963_DATA_WRITE_AND_NONVARIALBE);
}
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
set_viewport(g);
gdisp_lld_write_color(g);
}
#if GDISP_HARDWARE_STREAM_WRITE
LLDSPEC void gdisp_lld_write_start(GDisplay *g) {
//acquire_bus(g);
set_viewport(g);
}
LLDSPEC void gdisp_lld_write_stop(GDisplay *g) {
//release_bus(g);
}
#endif
#if GDISP_HARDWARE_STREAM_READ
LLDSPEC void gdisp_lld_read_start(GDisplay *g) {
acquire_bus(g);
set_viewport(g);
setreadmode(g);
dummy_read(g);
}
LLDSPEC color_t gdisp_lld_read_color(GDisplay *g) {
uint16_t data;
data = read_data(g);
return gdispNative2Color(data);
}
LLDSPEC void gdisp_lld_read_stop(GDisplay *g) {
setwritemode(g);
release_bus(g);
}
#endif
#if GDISP_HARDWARE_FILLS
LLDSPEC void gdisp_lld_fill_area(GDisplay *g) {
uint8_t data, j;
set_viewport(g);
if (g->p.color != White) {
data = 0xFF; // set dot
}
else {
data = 0; // clr dot
}
for (j=0; j < (g->p.cy)/8; j++) {
write_data_repeat(g, data, (g->p.cx));
(g->p.cy) +=8;
set_viewport(g);
}
}
#endif // GDISP_HARDWARE_FILLS
#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 == (powermode_t)g->p.ptr)
return;
switch((powermode_t)g->p.ptr) {
case powerOff:
acquire_bus(g);
write_index(g, 0x28);
gfxSleepMilliseconds(10);
write_index(g, 0x10);
release_bus(g);
break;
case powerOn:
acquire_bus(g);
write_index(g, 0x11);
gfxSleepMilliseconds(120);
write_index(g, 0x29);
release_bus(g);
if (g->g.Powermode != powerSleep)
gdisp_lld_init(g);
break;
case powerSleep:
acquire_bus(g);
write_index(g, 0x28);
gfxSleepMilliseconds(10);
write_index(g, 0x10);
release_bus(g);
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:
acquire_bus(g);
write_index(g, 0x36);
write_data(g, 0x08);
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
acquire_bus(g);
write_index(g, 0x36);
write_data(g, 0x68);
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
acquire_bus(g);
write_index(g, 0x36);
write_data(g, 0xC8);
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
acquire_bus(g);
write_index(g, 0x36);
write_data(g, 0xA8);
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
default:
return;
}
g->g.Orientation = (orientation_t)g->p.ptr;
return;
default:
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
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