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ugfx/drivers/gdisp/SSD1351/gdisp_lld_SSD1351.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
*/
#include "gfx.h"
#if GFX_USE_GDISP
#if defined(GDISP_SCREEN_HEIGHT) || defined(GDISP_SCREEN_HEIGHT)
#if GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_DIRECT
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#elif GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_MACRO
COMPILER_WARNING("GDISP: This low level driver does not support setting a screen size. It is being ignored.")
#endif
#undef GDISP_SCREEN_WIDTH
#undef GDISP_SCREEN_HEIGHT
#endif
#define GDISP_DRIVER_VMT GDISPVMT_SSD1351
#include "gdisp_lld_config.h"
#include "../../../src/gdisp/gdisp_driver.h"
#include "board_SSD1351.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 128
#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
#include "SSD1351.h"
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
// Some common routines and macros
#define dummy_read(g) { volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
#define write_reg(g, reg, data) { write_cmd(g, reg); write_data(g, data); }
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
// No private area for this controller
g->priv = 0;
// Initialise the board interface
init_board(g);
// Hardware reset
setpin_reset(g, TRUE);
gfxSleepMilliseconds(20);
setpin_reset(g, FALSE);
gfxSleepMilliseconds(20);
// Get the bus for the following initialisation commands
acquire_bus(g);
write_reg(g, 0xFD, 0x12); // unlock OLED driver IC
write_reg(g, 0xFD, 0xB1); // make commands A1, B1, B3, BB, BE, C1 accesible in unlocked state
write_cmd(g, 0xAE); // sleep mode ON (display off)
write_reg(g, 0xB3, 0xF1); // Front clock divider / osc freq - Osc = 0xF; div = 2
write_reg(g, 0xCA, 127); // set MUX ratio
write_reg(g, 0xA0, 0b01110100); // Set re-map / color depth
// [0] : address increment (0: horizontal, 1: vertical, reset 0)
// [1] : column remap (0: 0..127, 1: 127..0, reset 0)
// [2] : color remap (0: A->B->C, 1: C->B->A, reset 0)
// [3] : reserved
// [4] : column scan direction (0: top->down, 1: bottom->up, reset 0)
// [5] : odd/even split COM (0: disable, 1: enable, reset 1)
// [6..7] : color depth (00,01: 65k, 10: 262k, 11: 262k format 2)
write_cmd(g, 0x15); // Set Column address
write_data(g, 0x00); // start
write_data(g, 0x7F); // end
write_cmd(g, 0x75); // set row address
write_data(g, 0x00); // start
write_data(g, 0x7F); // end
write_reg(g, 0xA1, 0x00); // set display start line - 0
write_reg(g, 0xA2, 0x00); // set display offset - 0
write_reg(g, 0xB5, 0x00); // set GPIO - both HiZ, input disabled
write_reg(g, 0xAB, 0x01); // enable internal VDD regulator
write_reg(g, 0xB1, 0x32); // set reset / pre-charge period - phase 2: 3 DCLKs, phase 1: 5 DCLKs
write_reg(g, 0xBE, 0x05); // set VComH voltage - 0.82*Vcc
write_reg(g, 0xBB, 0x17); // set pre-charge voltage - 0.6*Vcc
write_cmd(g, 0xA6); // set display mode: reset to normal display
write_cmd(g, 0xC1); // set contrast current for A,B,C
write_data(g, 0xC8);
write_data(g, 0x80);
write_data(g, 0xC8);
write_reg(g, 0xC7, 0x0F); // master contrast current control - no change
write_cmd(g, 0xB4); // set segment low voltage
write_data(g, 0xA0); // external VSL
write_data(g, 0xB5); // hard value
write_data(g, 0x55); // hard value
write_reg(g, 0xB6, 0x01); // set second pre-charge period - 1 DCLKs
write_cmd(g, 0xAF); // sleep mode OFF (display on)
write_cmd(g, 0x5C); // write to RAM
// 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_STREAM_WRITE
LLDSPEC void gdisp_lld_write_start(GDisplay *g) {
acquire_bus(g);
write_cmd(g, SSD1351_SET_COLUMN_ADDRESS);
write_data(g, g->p.x);
write_data(g, g->p.x + g->p.cx - 1);
write_cmd(g, SSD1351_SET_ROW_ADDRESS);
write_data(g, g->p.y);
write_data(g, g->p.y + g->p.cy - 1);
write_cmd(g, SSD1351_WRITE_RAM);
}
LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
LLDCOLOR_TYPE c;
c = gdispColor2Native(g->p.color);
write_data(g, c >> 8);
write_data(g, c & 0xFF);
}
LLDSPEC void gdisp_lld_write_stop(GDisplay *g) {
release_bus(g);
}
#endif
#if GDISP_HARDWARE_STREAM_READ
#error "SSD1351 - Stream Read is not supported yet"
LLDSPEC void gdisp_lld_read_start(GDisplay *g) {
acquire_bus(g);
//set_viewport(g);
//write_index(g, 0x2E);
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_NEED_CONTROL && GDISP_HARDWARE_CONTROL
#error "SSD1351 - Hardware control is not supported yet"
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:
acquire_bus(g);
//TODO
release_bus(g);
break;
case powerOn:
acquire_bus(g);
//TODO
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);
//TODO
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
acquire_bus(g);
//TODO
release_bus(g);
g->g.Height = GDISP_SCREEN_WIDTH;
g->g.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
acquire_bus(g);
//TODO
release_bus(g);
g->g.Height = GDISP_SCREEN_HEIGHT;
g->g.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
acquire_bus(g);
//TODO
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;
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:
default:
return;
}
}
#endif
#endif /* GFX_USE_GDISP */
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