/* * 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 */ /** * @file drivers/gdisp/SSD1963/gdisp_lld.c * @brief GDISP Graphics Driver subsystem low level driver source. */ #include "gfx.h" #if GFX_USE_GDISP #define GDISP_DRIVER_VMT GDISPVMT_SSD1963 #include "../drivers/gdisp/SSD1963/gdisp_lld_config.h" #include "gdisp/lld/gdisp_lld.h" #define CALC_PERIOD(w,b,f,p) (p+b+w+f) #define CALC_FPR(w,h,hb,hf,hp,vb,vf,vp,fps) ((fps * CALC_PERIOD(w,hb,hf,hp) * CALC_PERIOD(h,vb,vf,vp) * 1048576)/100000000) typedef struct LCD_Parameters { coord_t width, height; // Panel width and height uint16_t hbporch; // Horizontal Back Porch uint16_t hfporch; // Horizontal Front Porch uint16_t hpulse; // Horizontal Pulse uint16_t hperiod; // Horizontal Period (Total) uint16_t vbporch; // Vertical Back Porch uint16_t vfporch; // Vertical Front Porch uint16_t vpulse; // Vertical Pulse uint16_t vperiod; // Vertical Period (Total) uint32_t fpr; // Calculated FPR } LCD_Parameters; #include "board_SSD1963.h" /*===========================================================================*/ /* Driver local definitions. */ /*===========================================================================*/ #ifndef GDISP_INITIAL_CONTRAST #define GDISP_INITIAL_CONTRAST 50 #endif #ifndef GDISP_INITIAL_BACKLIGHT #define GDISP_INITIAL_BACKLIGHT 90 #endif /*===========================================================================*/ /* Driver local functions. */ /*===========================================================================*/ #include "ssd1963.h" #define write_reg(g, reg, data) { write_index(g, reg); write_data(g, data); } #define write_data16(g, data) { write_data(g, (data)>>8); write_data(g, (data) & 0xFF); } static inline void set_viewport(GDisplay* g) { write_index(g, SSD1963_SET_PAGE_ADDRESS); write_data16(g, g->p.y); write_data16(g, g->p.y+g->p.cy-1); write_index(g, SSD1963_SET_COLUMN_ADDRESS); write_data16(g, g->p.x); write_data16(g, g->p.x+g->p.cx-1); write_index(g, SSD1963_WRITE_MEMORY_START); } /** * The backlight is controlled by the controller. */ static inline void set_backlight(GDisplay *g, uint8_t percent) { //duty_cycle is 00..FF //Work in progress: the SSD1963 has a built-in PWM, its output can //be used by a Dynamic Background Control or by a host (user) //Check your LCD's hardware, the PWM connection is default left open and instead //connected to a LED connection on the breakout board write_index(g, SSD1963_SET_PWM_CONF); //set PWM for BackLight write_data(g, 0x01); write_data(g, (55+percent*2) & 0x00FF); write_data(g, 0x01); //controlled by host (not DBC), enabled write_data(g, 0xFF); write_data(g, 0x60); //don't let it go too dark, avoid a useless LCD write_data(g, 0x0F); //prescaler ??? } /*===========================================================================*/ /* Driver interrupt handlers. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver exported functions. */ /*===========================================================================*/ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) { LCD_Parameters * lcdp; // The private area for this controller is the LCD timings lcdp = (void *)&DisplayTimings[g->controllerdisplay]; g->priv = lcdp; // 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_index(g, SSD1963_SOFT_RESET); gfxSleepMilliseconds(5); /* Driver PLL config */ write_index(g, SSD1963_SET_PLL_MN); write_data(g, 35); // PLLclk = REFclk (10Mhz) * 36 (360Mhz) write_data(g, 2); // SYSclk = PLLclk / 3 (120MHz) write_data(g, 4); // Apply calculation bit, else it is ignored write_reg(g, SSD1963_SET_PLL, 0x01); // Enable PLL gfxSleepMilliseconds(5); write_reg(g, SSD1963_SET_PLL, 0x03); // Use PLL gfxSleepMilliseconds(5); write_index(g, SSD1963_SOFT_RESET); gfxSleepMilliseconds(5); /* Screen size */ write_index(g, SSD1963_SET_GDISP_MODE); write_data(g, 0x18); //Enabled dithering write_data(g, 0x00); write_data16(g, lcdp->width-1); write_data16(g, lcdp->height-1); write_data(g, 0x00); // RGB write_reg(g, SSD1963_SET_PIXEL_DATA_INTERFACE, SSD1963_PDI_16BIT565); /* LCD Clock specs */ write_index(g, SSD1963_SET_LSHIFT_FREQ); write_data(g, (lcdp->fpr >> 16) & 0xFF); write_data(g, (lcdp->fpr >> 8) & 0xFF); write_data(g, lcdp->fpr & 0xFF); write_index(g, SSD1963_SET_HORI_PERIOD); write_data16(g, lcdp->hperiod); write_data16(g, lcdp->hpulse + lcdp->hbporch); write_data(g, lcdp->hpulse); write_data(g, 0x00); write_data(g, 0x00); write_data(g, 0x00); write_index(g, SSD1963_SET_VERT_PERIOD); write_data16(g, lcdp->vperiod); write_data16(g, lcdp->vpulse + lcdp->vbporch); write_data(g, lcdp->vpulse); write_data(g, 0x00); write_data(g, 0x00); /* Tear effect indicator ON. This is used to tell the host MCU when the driver is not refreshing the panel (during front/back porch) */ write_reg(g, SSD1963_SET_TEAR_ON, 0x00); /* Turn on */ write_index(g, SSD1963_SET_DISPLAY_ON); /* Turn on the back-light */ set_backlight(g, GDISP_INITIAL_BACKLIGHT); // Finish Init post_init_board(g); // Release the bus release_bus(g); /* Initialise the GDISP structure */ g->g.Width = lcdp->width; g->g.Height = lcdp->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); set_viewport(g); } LLDSPEC void gdisp_lld_write_color(GDisplay *g) { write_data(g, COLOR2NATIVE(g->p.color)); } LLDSPEC void gdisp_lld_write_stop(GDisplay *g) { release_bus(g); } #endif // Not implemented yet. #if 0 && 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, SSD1963_EXIT_SLEEP_MODE); // leave sleep mode gfxSleepMilliseconds(5); write_index(g, SSD1963_SET_DISPLAY_OFF); write_index(g, SSD1963_SET_DEEP_SLEEP); // enter deep sleep mode release_bus(g); break; case powerOn: acquire_bus(g); read_reg(0x0000); gfxSleepMilliseconds(5); // 2x Dummy reads to wake up from deep sleep read_reg(0x0000); gfxSleepMilliseconds(5); write_index(g, SSD1963_SET_DISPLAY_ON); release_bus(g); break; case powerSleep: acquire_bus(g); write_index(g, SSD1963_SET_DISPLAY_OFF); write_index(g, SSD1963_ENTER_SLEEP_MODE); // enter sleep mode 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; case GDISP_ROTATE_0: acquire_bus(g); /* Code here */ release_bus(g); g->g.Height = ((LCD_Parameters *)g->priv)->height; g->g.Width = ((LCD_Parameters *)g->priv)->width; break; case GDISP_ROTATE_90: acquire_bus(g); /* Code here */ release_bus(g); g->g.Height = ((LCD_Parameters *)g->priv)->width; g->g.Width = ((LCD_Parameters *)g->priv)->height; break; case GDISP_ROTATE_180: acquire_bus(g); /* Code here */ release_bus(g); g->g.Height = ((LCD_Parameters *)g->priv)->height; g->g.Width = ((LCD_Parameters *)g->priv)->width; break; case GDISP_ROTATE_270: acquire_bus(g); /* Code here */ release_bus(g); g->g.Height = ((LCD_Parameters *)g->priv)->width; g->g.Width = ((LCD_Parameters *)g->priv)->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 */