279 lines
8.2 KiB
C
279 lines
8.2 KiB
C
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/*
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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.io/license.html
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*/
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#include "gfx.h"
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#if GFX_USE_GDISP /*|| defined(__DOXYGEN__)*/
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#define GDISP_DRIVER_VMT GDISPVMT_RA8875
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#include "gdisp_lld_config.h"
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#include "../../../src/gdisp/gdisp_driver.h"
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/* include the users board interface */
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#include "board_RA8875.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 272
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#endif
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#ifndef GDISP_SCREEN_WIDTH
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#define GDISP_SCREEN_WIDTH 480
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#endif
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#ifndef GDISP_INITIAL_CONTRAST
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#define GDISP_INITIAL_CONTRAST 50
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#endif
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#ifndef GDISP_INITIAL_BACKLIGHT
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#define GDISP_INITIAL_BACKLIGHT 74
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#endif
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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 gU16 dummy; dummy = read_data(g); (void) dummy; }
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#define write_reg8(g, reg, data) { write_index(g, reg); write_data(g, data); }
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#define write_reg16(g, reg, data) { write_index(g, reg); write_data(g, data); write_index(g, reg+1); write_data(g, (data)>>8); }
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#define write_reg8x2(g, reg, d1, d2) { write_index(g, reg); write_data(g, d1); write_data(g, d2); }
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static GFXINLINE void set_cursor(GDisplay *g) {
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write_reg16(g, 0x46, g->p.x);
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write_reg16(g, 0x48, g->p.y);
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write_index(g, 0x02);
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}
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static GFXINLINE void set_viewport(GDisplay* g) {
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write_reg16(g, 0x30, g->p.x); //HSAW0 & HSAW1
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write_reg16(g, 0x34, g->p.x+g->p.cx-1); //HEAW0 & HEAW1
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write_reg16(g, 0x32, g->p.y); //VSAW0 & VSAW1
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write_reg16(g, 0x36, g->p.y+g->p.cy-1); //VEAW0 & VEAW1
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}
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// On this controller the back-light is controlled by the controllers internal PWM
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// which is why it is in this file rather than the board file.
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static GFXINLINE void set_backlight(GDisplay* g, gU8 percent) {
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gU8 temp;
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//Work in progress: the RA8875 has a built-in PWM, its output can
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//be used by a Dynamic Background Control or by a host (user)
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// Enable PWM1
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write_index(g, 0x8a); //MCLR
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setreadmode(g);
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temp = read_data(g);
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setwritemode(g);
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temp |= 1<<7 ;
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write_data(g, temp);
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// PWM1 function select
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write_index(g, 0x8a); //MCLR
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setreadmode(g);
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temp = read_data(g);
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setwritemode(g);
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temp &= ~(1<<4);
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write_data(g, temp);
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// PWM1 Clock ratio
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write_index(g, 0x8a); //MCLR
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setreadmode(g);
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temp = read_data(g);
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setwritemode(g);
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temp &= 0xf0;
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temp |= 0x0b & 0x0f;
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write_data(g, temp);
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// PWM1 Write duty cycle
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write_reg8(g, 0x8b, 54+percent); // PTNO: Also change percent to range from 0x00 to 0xFF
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}
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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LLDSPEC gBool 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, gTrue);
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gfxSleepMilliseconds(20);
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setpin_reset(g, gFalse);
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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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// Soft reset
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write_reg8x2(g, 0x01, 0x01, 0x00); gfxSleepMilliseconds(1);
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// PLL config
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write_reg8(g, 0x88, 0x08); gfxSleepMilliseconds(1);
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write_reg8(g, 0x89, 0x02); gfxSleepMilliseconds(1);
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write_reg8(g, 0x10, 0x0F); //SYSR bit[4:3]=00 256 color bit[2:1]= 00 8bit MPU interface
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// 0x0F = 16bit MCU interface and 65k color display
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write_reg8(g, 0x04, 0x82); gfxSleepMilliseconds(1); //set PCLK inverse
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// Horizontal set
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write_reg8(g, 0x14, GDISP_SCREEN_WIDTH/8-1); //HDWR: Horizontal Display Width Setting Bit[6:0] - pixels = (HDWR + 1)*8
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write_reg8(g, 0x15, 0x00); //Horizontal Non-Display Period Fine Tuning Option Register (HNDFTR) - HNDFT = [3:0]
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write_reg8(g, 0x16, 0x01); //HNDR: Horizontal Non-Display Period Bit[4:0] - pixels = (HNDR + 1)*8
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write_reg8(g, 0x17, 0x00); //HSTR: HSYNC Start Position[4:0] - Position(PCLK) = (HSTR + 1)*8
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write_reg8(g, 0x18, 0x05); //HPWR: HSYNC Polarity, The period width of HSYNC. Width [4:0] width(PCLK) = (HPWR + 1)*8
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// Vertical set
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write_reg16(g, 0x19, GDISP_SCREEN_HEIGHT-1); //VDHR0,1: Vertical Display Height = VDHR + 1
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write_reg16(g, 0x1b, 0x0002); //VNDR0,1: Vertical Non-Display Period Bit = (VSTR + 1)
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write_reg16(g, 0x1d, 0x0007); //VSTR0,1: VSYNC Start Position = (VSTR + 1)
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write_reg8(g, 0x1f, 0x09); //VPWR: VSYNC Polarity, VSYNC Pulse Width[6:0] - Width(PCLK) = (VPWR + 1)
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// Active window set
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write_reg16(g, 0x30, 0); //HSAW0 & HSAW1
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write_reg16(g, 0x34, GDISP_SCREEN_WIDTH-1); //HEAW0 & HEAW1
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write_reg16(g, 0x32, 0); //VSAW0 & VSAW1
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write_reg16(g, 0x36, GDISP_SCREEN_HEIGHT-1); //VEAW0 & VEAW1
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// Display ON
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write_reg8(g, 0x01, 0x80); //PWRR
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// GPO0 DISP high
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write_reg8(g, 0x13, 0x01); //GPO
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// Set initial back-light
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set_backlight(g, GDISP_INITIAL_BACKLIGHT);
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// Change timings for faster access
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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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/* 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 = gOrientation0;
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g->g.Powermode = gPowerOn;
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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 gTrue;
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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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set_viewport(g);
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}
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LLDSPEC void gdisp_lld_write_color(GDisplay *g) {
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write_data(g, gdispColor2Native(g->p.color));
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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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LLDSPEC void gdisp_lld_write_pos(GDisplay *g) {
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set_cursor(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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LLDSPEC void gdisp_lld_control(GDisplay *g) {
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switch(g->p.x) {
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#if 0
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case GDISP_CONTROL_POWER:
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if (g->g.Powermode == (gPowermode)g->p.ptr)
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return;
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switch((gPowermode)g->p.ptr) {
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case gPowerOff:
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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 gPowerOn:
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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 gPowerSleep:
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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 = (gPowermode)g->p.ptr;
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return;
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#endif
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#if 0
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case GDISP_CONTROL_ORIENTATION:
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if (g->g.Orientation == (gOrientation)g->p.ptr)
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return;
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switch((gOrientation)g->p.ptr) {
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case gOrientation0:
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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 gOrientation90:
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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 gOrientation180:
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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 gOrientation270:
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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 = (gOrientation)g->p.ptr;
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return;
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#endif
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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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acquire_bus(g);
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set_backlight(g, (unsigned)g->p.ptr);
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release_bus(g);
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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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