265 lines
7.5 KiB
C
265 lines
7.5 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#include "gfx.h"
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#if GFX_USE_GDISP
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#if defined(GDISP_SCREEN_HEIGHT)
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#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
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#undef GISP_SCREEN_HEIGHT
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#endif
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#if defined(GDISP_SCREEN_WIDTH)
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#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
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#undef GDISP_SCREEN_WIDTH
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#endif
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#define GDISP_DRIVER_VMT GDISPVMT_SSD1351
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#include "gdisp_lld_config.h"
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#include "../../../src/gdisp/gdisp_driver.h"
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#include "board_SSD1351.h"
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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#ifndef GDISP_SCREEN_HEIGHT
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#define GDISP_SCREEN_HEIGHT 128
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#endif
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#ifndef GDISP_SCREEN_WIDTH
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#define GDISP_SCREEN_WIDTH 128
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 100
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#endif
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#ifndef GDISP_INITIAL_BACKLIGHT
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#define GDISP_INITIAL_BACKLIGHT 100
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#endif
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#include "SSD1351.h"
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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// Some common routines and macros
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#define dummy_read(g) { volatile uint16_t dummy; dummy = read_data(g); (void) dummy; }
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#define write_reg(g, reg, data) { write_cmd(g, reg); write_data(g, data); }
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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LLDSPEC bool_t gdisp_lld_init(GDisplay *g) {
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// No private area for this controller
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g->priv = 0;
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// Initialise the board interface
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init_board(g);
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// Hardware reset
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setpin_reset(g, TRUE);
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gfxSleepMilliseconds(20);
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setpin_reset(g, FALSE);
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gfxSleepMilliseconds(20);
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// Get the bus for the following initialisation commands
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acquire_bus(g);
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write_reg(g, 0xFD, 0x12); // unlock OLED driver IC
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write_reg(g, 0xFD, 0xB1); // make commands A1, B1, B3, BB, BE, C1 accesible in unlocked state
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write_cmd(g, 0xAE); // sleep mode ON (display off)
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write_reg(g, 0xB3, 0xF1); // Front clock divider / osc freq - Osc = 0xF; div = 2
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write_reg(g, 0xCA, 127); // set MUX ratio
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write_reg(g, 0xA0, 0b01110100); // Set re-map / color depth
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// [0] : address increment (0: horizontal, 1: vertical, reset 0)
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// [1] : column remap (0: 0..127, 1: 127..0, reset 0)
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// [2] : color remap (0: A->B->C, 1: C->B->A, reset 0)
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// [3] : reserved
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// [4] : column scan direction (0: top->down, 1: bottom->up, reset 0)
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// [5] : odd/even split COM (0: disable, 1: enable, reset 1)
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// [6..7] : color depth (00,01: 65k, 10: 262k, 11: 262k format 2)
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write_cmd(g, 0x15); // Set Column address
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write_data(g, 0x00); // start
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write_data(g, 0x7F); // end
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write_cmd(g, 0x75); // set row address
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write_data(g, 0x00); // start
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write_data(g, 0x7F); // end
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write_reg(g, 0xA1, 0x00); // set display start line - 0
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write_reg(g, 0xA2, 0x00); // set display offset - 0
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write_reg(g, 0xB5, 0x00); // set GPIO - both HiZ, input disabled
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write_reg(g, 0xAB, 0x01); // enable internal VDD regulator
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write_reg(g, 0xB1, 0x32); // set reset / pre-charge period - phase 2: 3 DCLKs, phase 1: 5 DCLKs
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write_reg(g, 0xBE, 0x05); // set VComH voltage - 0.82*Vcc
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write_reg(g, 0xBB, 0x17); // set pre-charge voltage - 0.6*Vcc
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write_cmd(g, 0xA6); // set display mode: reset to normal display
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write_cmd(g, 0xC1); // set contrast current for A,B,C
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write_data(g, 0xC8);
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write_data(g, 0x80);
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write_data(g, 0xC8);
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write_reg(g, 0xC7, 0x0F); // master contrast current control - no change
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write_cmd(g, 0xB4); // set segment low voltage
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write_data(g, 0xA0); // external VSL
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write_data(g, 0xB5); // hard value
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write_data(g, 0x55); // hard value
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write_reg(g, 0xB6, 0x01); // set second pre-charge period - 1 DCLKs
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write_cmd(g, 0xAF); // sleep mode OFF (display on)
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write_cmd(g, 0x5C); // write to RAM
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release_bus(g);
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// Finish Init
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post_init_board(g);
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// Release the bus
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release_bus(g);
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/* Turn on the back-light */
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set_backlight(g, GDISP_INITIAL_BACKLIGHT);
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/* Initialise the GDISP structure */
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g->g.Width = GDISP_SCREEN_WIDTH;
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g->g.Height = GDISP_SCREEN_HEIGHT;
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g->g.Orientation = GDISP_ROTATE_0;
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g->g.Powermode = powerOn;
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g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
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g->g.Contrast = GDISP_INITIAL_CONTRAST;
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return TRUE;
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}
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#if GDISP_HARDWARE_STREAM_WRITE
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LLDSPEC void gdisp_lld_write_start(GDisplay *g) {
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acquire_bus(g);
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write_cmd(g, SSD1351_SET_COLUMN_ADDRESS);
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write_data(g, g->p.x);
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write_data(g, g->p.x + g->p.cx - 1);
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write_cmd(g, SSD1351_SET_ROW_ADDRESS);
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write_data(g, g->p.y);
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write_data(g, g->p.y + g->p.cy - 1);
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write_cmd(g, SSD1351_WRITE_RAM);
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}
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LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
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LLDCOLOR_TYPE c;
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c = gdispColor2Native(g->p.color);
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write_data(g, c >> 8);
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write_data(g, c & 0xFF);
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}
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LLDSPEC void gdisp_lld_write_stop(GDisplay *g) {
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release_bus(g);
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}
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#endif
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#if GDISP_HARDWARE_STREAM_READ
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#error "SSD1351 - Stream Read is not supported yet"
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LLDSPEC void gdisp_lld_read_start(GDisplay *g) {
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acquire_bus(g);
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//set_viewport(g);
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//write_index(g, 0x2E);
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setreadmode(g);
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//dummy_read(g);
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}
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LLDSPEC color_t gdisp_lld_read_color(GDisplay *g) {
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uint16_t data;
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data = read_data(g);
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return gdispNative2Color(data);
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}
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LLDSPEC void gdisp_lld_read_stop(GDisplay *g) {
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setwritemode(g);
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release_bus(g);
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}
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#endif
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#if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL
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#error "SSD1351 - Hardware control is not supported yet"
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LLDSPEC void gdisp_lld_control(GDisplay *g) {
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switch(g->p.x) {
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case GDISP_CONTROL_POWER:
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if (g->g.Powermode == (powermode_t)g->p.ptr)
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return;
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switch((powermode_t)g->p.ptr) {
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case powerOff:
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case powerSleep:
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case powerDeepSleep:
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acquire_bus(g);
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//TODO
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release_bus(g);
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break;
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case powerOn:
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acquire_bus(g);
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//TODO
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release_bus(g);
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break;
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default:
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return;
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}
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g->g.Powermode = (powermode_t)g->p.ptr;
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return;
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case GDISP_CONTROL_ORIENTATION:
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if (g->g.Orientation == (orientation_t)g->p.ptr)
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return;
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switch((orientation_t)g->p.ptr) {
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case GDISP_ROTATE_0:
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acquire_bus(g);
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//TODO
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release_bus(g);
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g->g.Height = GDISP_SCREEN_HEIGHT;
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g->g.Width = GDISP_SCREEN_WIDTH;
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break;
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case GDISP_ROTATE_90:
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acquire_bus(g);
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//TODO
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release_bus(g);
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g->g.Height = GDISP_SCREEN_WIDTH;
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g->g.Width = GDISP_SCREEN_HEIGHT;
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break;
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case GDISP_ROTATE_180:
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acquire_bus(g);
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//TODO
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release_bus(g);
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g->g.Height = GDISP_SCREEN_HEIGHT;
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g->g.Width = GDISP_SCREEN_WIDTH;
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break;
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case GDISP_ROTATE_270:
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acquire_bus(g);
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//TODO
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release_bus(g);
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g->g.Height = GDISP_SCREEN_WIDTH;
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g->g.Width = GDISP_SCREEN_HEIGHT;
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break;
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default:
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return;
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}
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g->g.Orientation = (orientation_t)g->p.ptr;
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return;
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case GDISP_CONTROL_BACKLIGHT:
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if ((unsigned)g->p.ptr > 100)
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g->p.ptr = (void *)100;
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set_backlight(g, (unsigned)g->p.ptr);
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g->g.Backlight = (unsigned)g->p.ptr;
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return;
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//case GDISP_CONTROL_CONTRAST:
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default:
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return;
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}
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}
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#endif
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#endif /* GFX_USE_GDISP */
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