/* * 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 #define GDISP_DRIVER_VMT GDISPVMT_SSD1322 #include "gdisp_lld_config.h" #include "../../../src/gdisp/gdisp_driver.h" #include "board_SSD1322.h" #include // for memset /*===========================================================================*/ /* Driver local definitions. */ /*===========================================================================*/ #ifndef GDISP_SCREEN_HEIGHT #define GDISP_SCREEN_HEIGHT 64 // This controller should support 64 #endif #ifndef GDISP_SCREEN_WIDTH #define GDISP_SCREEN_WIDTH 256 #endif #ifndef GDISP_INITIAL_CONTRAST #define GDISP_INITIAL_CONTRAST 100 #endif #ifndef GDISP_INITIAL_BACKLIGHT #define GDISP_INITIAL_BACKLIGHT 100 #endif #ifndef SSD1322_USE_DMA #define SSD1322_USE_DMA FALSE #endif #define SSD1322_ROW_WIDTH (GDISP_SCREEN_WIDTH/2) #define GDISP_FLG_NEEDFLUSH (GDISP_FLG_DRIVER<<0) #include "SSD1322.h" /*===========================================================================*/ /* Driver local functions. */ /*===========================================================================*/ // Some common routines and macros #define RAM(g) ((uint8_t *)g->priv) // Some common routines and macros #define xyaddr(x, y) ((x) + (y)*SSD1322_ROW_WIDTH) #define xybits(x, y, c) ((c)<<(((x)&1)<<2)) /*===========================================================================*/ /* Driver exported functions. */ /*===========================================================================*/ /** * As this controller can't update on a pixel boundary we need to maintain the * the entire display surface in memory so that we can do the necessary bit * operations. Fortunately it is a small display in 4 bit grayscale. * 64 * 128 / 2 = 4096 bytes. */ LLDSPEC bool_t gdisp_lld_init(GDisplay *g) { // The private area is the display surface. g->priv = gfxAlloc(GDISP_SCREEN_HEIGHT * SSD1322_ROW_WIDTH); // Initialise the board interface init_board(g); post_init_board(g); // Hardware reset setpin_reset(g, TRUE); gfxSleepMilliseconds(20); setpin_reset(g, FALSE); gfxSleepMilliseconds(200); write_cmd(g,CMD_SET_COMMAND_LOCK); write_data(g,0x12); // Unlock OLED driver IC write_cmd(g,CMD_SET_DISPLAY_OFF); write_cmd(g,CMD_SET_CLOCK_DIVIDER); write_data(g,0x91); write_cmd(g,CMD_SET_MULTIPLEX_RATIO); write_data(g,0x3F); //duty = 1/64*,64 COMS are enabled write_cmd(g,CMD_SET_DISPLAY_OFFSET); write_data(g,0x00); write_cmd(g,CMD_SET_DISPLAY_START_LINE); //set start line position write_data(g,0x00); write_cmd(g,CMD_SET_REMAP); write_data(g,0x14); //Horizontal address increment,Disable Column Address Re-map,Enable Nibble Re-map,Scan from COM[N-1] to COM0,Disable COM Split Odd Even write_data(g,0x11); //Enable Dual COM mode write_cmd(g,0xB5); //GPIO write_data(g,0x00); //writeCommand(0x00); write_cmd(g,CMD_SET_FUNCTION_SELECTION); write_data(g,0x01);// selection external VDD write_cmd(g,CMD_DISPLAY_ENHANCEMENT); write_data(g,0xA0);// enables the external VSL write_data(g,0xb5);// 0xfd,Enhanced low GS display quality;default is 0xb5(normal), write_cmd(g,CMD_SET_CONTRAST_CURRENT); write_data(g,0x7f); // 0xff default is 0x7f write_cmd(g,CMD_MASTER_CURRENT_CONTROL); write_data(g,0x0f); //default is 0x0f write_cmd(g,0xB9); //GRAY TABLE,linear Gray Scale write_cmd(g,CMD_SET_PHASE_LENGTH); write_data(g,0xE2); // default is 0x74 write_cmd(g,CMD_DISPLAY_ENHANCEMENT_B); write_data(g,0xA2); // Reserved;default is 0xa2(normal) write_data(g,0x20); write_cmd(g,CMD_SET_PRECHARGE_VOLTAGE); write_data(g,0x1F); // 0.6xVcc write_cmd(g,CMD_SET_SECOND_PRECHARGE_PERIOD); write_data(g,0x08); // default write_cmd(g,CMD_SET_VCOMH_VOLTAGE ); write_data(g,0x07); // 0.86xVcc;default is 0x04 write_cmd(g,CMD_SET_DISPLAY_MODE_NORMAL); write_cmd(g,CMD_EXIT_PARTIAL_DISPLAY); write_cmd(g,CMD_SET_DISPLAY_ON); // Finish Init post_init_board(g); /* Initialise the GDISP structure */ g->g.Width = GDISP_SCREEN_WIDTH; g->g.Height = GDISP_SCREEN_HEIGHT; g->g.Orientation = GDISP_ROTATE_180; g->g.Powermode = powerOn; g->g.Backlight = GDISP_INITIAL_BACKLIGHT; g->g.Contrast = GDISP_INITIAL_CONTRAST; return TRUE; } #if GDISP_HARDWARE_FLUSH LLDSPEC void gdisp_lld_flush(GDisplay *g) { uint8_t * ram; unsigned cols,rows; // Don't flush if we don't need it. if (!(g->flags & GDISP_FLG_NEEDFLUSH)) return; acquire_bus(g); write_cmd(g, CMD_SET_COLUMN_ADDR); // range 28 to 91 for 256 pixels to x write_data(g, 28); write_data(g, GDISP_SCREEN_WIDTH/4 + 28 - 1); write_cmd(g, CMD_SET_ROW_ADDR); // range 0 to 63 for 64 pixels write_data(g, 0); write_data(g, GDISP_SCREEN_HEIGHT-1); write_cmd(g, CMD_WRITE_RAM); ram = RAM(g); #if SSD1322_USE_DMA write_data_DMA(g, ram); #else for(rows = 0; rows < GDISP_SCREEN_HEIGHT; rows ++) { for(cols = 0;cols < GDISP_SCREEN_WIDTH/2; cols ++) { write_data(g, *ram++); } } #endif release_bus(g); g->flags &= ~GDISP_FLG_NEEDFLUSH; } #endif #if GDISP_HARDWARE_DRAWPIXEL LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) { coord_t x, y; uint8_t *ram; switch(g->g.Orientation) { default: case GDISP_ROTATE_0: x = g->p.x; y = g->p.y; break; case GDISP_ROTATE_90: x = g->p.y; y = GDISP_SCREEN_HEIGHT-1 - g->p.x; break; case GDISP_ROTATE_180: x = GDISP_SCREEN_WIDTH-1 - g->p.x; y = GDISP_SCREEN_HEIGHT-1 - g->p.y; break; case GDISP_ROTATE_270: x = GDISP_SCREEN_WIDTH-1 - g->p.y; y = g->p.x; break; } ram = RAM(g)+xyaddr(x,y); *ram &= ~xybits(x, y, LLDCOLOR_MASK()); *ram |= xybits(x, y, gdispColor2Native(g->p.color)); g->flags |= GDISP_FLG_NEEDFLUSH; } #endif #if GDISP_HARDWARE_PIXELREAD LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g) { coord_t x, y; LLDCOLOR_TYPE c; switch(g->g.Orientation) { default: case GDISP_ROTATE_0: x = g->p.x; y = g->p.y; break; case GDISP_ROTATE_90: x = g->p.y; y = GDISP_SCREEN_HEIGHT-1 - g->p.x; break; case GDISP_ROTATE_180: x = GDISP_SCREEN_WIDTH-1 - g->p.x; y = GDISP_SCREEN_HEIGHT-1 - g->p.y; break; case GDISP_ROTATE_270: x = GDISP_SCREEN_WIDTH-1 - g->p.y; y = g->p.x; break; } c = (RAM(g)[xyaddr(x, y)]>>((x & 1)<<2)) & LLDCOLOR_MASK(); return gdispNative2Color(c); } #endif #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: case powerSleep: case powerDeepSleep: acquire_bus(g); write_cmd(g, CMD_SET_DISPLAY_MODE_OFF); release_bus(g); break; case powerOn: acquire_bus(g); write_cmd(g, CMD_SET_DISPLAY_MODE_ON); 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) { /* Rotation is handled by the drawing routines */ case GDISP_ROTATE_0: case GDISP_ROTATE_180: g->g.Height = GDISP_SCREEN_HEIGHT; g->g.Width = GDISP_SCREEN_WIDTH; break; case GDISP_ROTATE_90: case GDISP_ROTATE_270: g->g.Height = GDISP_SCREEN_WIDTH; g->g.Width = GDISP_SCREEN_HEIGHT; break; default: return; } g->g.Orientation = (orientation_t)g->p.ptr; return; } } #endif // GDISP_NEED_CONTROL #endif // GFX_USE_GDISP