/* * 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/ILI9320/gdisp_lld.c * @brief GDISP Graphics Driver subsystem low level driver source for the ILI9320 display. */ #include "gfx.h" #if GFX_USE_GDISP /* This controller is only ever used with a 240 x 320 display */ #if defined(GDISP_SCREEN_HEIGHT) #warning "GDISP: This low level driver does not support setting a screen size. It is being ignored." #undef GDISP_SCREEN_HEIGHT #endif #if defined(GDISP_SCREEN_WIDTH) #warning "GDISP: This low level driver does not support setting a screen size. It is being ignored." #undef GDISP_SCREEN_WIDTH #endif #define GDISP_LLD_DECLARATIONS #include "gdisp/lld/gdisp_lld.h" #include "gdisp_lld_board.h" /*===========================================================================*/ /* Driver local definitions. */ /*===========================================================================*/ #ifndef GDISP_SCREEN_HEIGHT #define GDISP_SCREEN_HEIGHT 320 #endif #ifndef GDISP_SCREEN_WIDTH #define GDISP_SCREEN_WIDTH 240 #endif #ifndef GDISP_INITIAL_CONTRAST #define GDISP_INITIAL_CONTRAST 50 #endif #ifndef GDISP_INITIAL_BACKLIGHT #define GDISP_INITIAL_BACKLIGHT 100 #endif /*===========================================================================*/ /* Driver local variables. */ /*===========================================================================*/ uint32_t DISPLAY_CODE; /*===========================================================================*/ /* Driver local functions. */ /*===========================================================================*/ #define dummy_read() { volatile uint16_t dummy; dummy = read_data(); (void) dummy; } #define write_reg(reg, data) { write_index(reg); write_data(data); } static void set_cursor(GDISPDriver *g) { switch(g->g.Orientation) { case GDISP_ROTATE_0: case GDISP_ROTATE_180: write_reg(0x0020, g->p.x); write_reg(0x0021, g->p.y); break; case GDISP_ROTATE_90: case GDISP_ROTATE_270: write_reg(0x0020, g->p.y); write_reg(0x0021, g->p.x); break; } write_index(0x0022); } static void set_viewport(GDISPDriver *g) { switch(g->g.Orientation) { case GDISP_ROTATE_0: case GDISP_ROTATE_180: write_reg(0x0050, g->p.x); write_reg(0x0051, g->p.x + g->p.cx - 1); write_reg(0x0052, g->p.y); write_reg(0x0053, g->p.y + g->p.cy - 1); break; case GDISP_ROTATE_90: case GDISP_ROTATE_270: write_reg(0x0050, g->p.y); write_reg(0x0051, g->p.y + g->p.cy - 1); write_reg(0x0052, g->p.x); write_reg(0x0053, g->p.x + g->p.cx - 1); break; } } LLDSPEC bool_t gdisp_lld_init(GDISPDriver *g) { /* Initialise your display */ init_board(); /* Hardware reset */ setpin_reset(TRUE); gfxSleepMicroseconds(1000); setpin_reset(FALSE); gfxSleepMicroseconds(1000); acquire_bus(); write_index(0); // Get controller version dummy_read(); DISPLAY_CODE = read_data(); write_reg(0x0000, 0x0001); //start Int. osc gfxSleepMicroseconds(500); write_reg(0x0001, 0x0100); //Set SS bit (shift direction of outputs is from S720 to S1) write_reg(0x0002, 0x0700); //select the line inversion write_reg(0x0003, 0x1038); //Entry mode(Horizontal : increment,Vertical : increment, AM=1) write_reg(0x0004, 0x0000); //Resize control(No resizing) write_reg(0x0008, 0x0202); //front and back porch 2 lines write_reg(0x0009, 0x0000); //select normal scan write_reg(0x000A, 0x0000); //display control 4 write_reg(0x000C, 0x0000); //system interface(2 transfer /pixel), internal sys clock, write_reg(0x000D, 0x0000); //Frame marker position write_reg(0x000F, 0x0000); //selects clk, enable and sync signal polarity, write_reg(0x0010, 0x0000); // write_reg(0x0011, 0x0000); //power control 2 reference voltages = 1:1, write_reg(0x0012, 0x0000); //power control 3 VRH write_reg(0x0013, 0x0000); //power control 4 VCOM amplitude gfxSleepMicroseconds(500); write_reg(0x0010, 0x17B0); //power control 1 BT,AP write_reg(0x0011, 0x0137); //power control 2 DC,VC gfxSleepMicroseconds(500); write_reg(0x0012, 0x0139); //power control 3 VRH gfxSleepMicroseconds(500); write_reg(0x0013, 0x1d00); //power control 4 vcom amplitude write_reg(0x0029, 0x0011); //power control 7 VCOMH gfxSleepMicroseconds(500); write_reg(0x0030, 0x0007); write_reg(0x0031, 0x0403); write_reg(0x0032, 0x0404); write_reg(0x0035, 0x0002); write_reg(0x0036, 0x0707); write_reg(0x0037, 0x0606); write_reg(0x0038, 0x0106); write_reg(0x0039, 0x0007); write_reg(0x003c, 0x0700); write_reg(0x003d, 0x0707); write_reg(0x0020, 0x0000); //starting Horizontal GRAM Address write_reg(0x0021, 0x0000); //starting Vertical GRAM Address write_reg(0x0050, 0x0000); //Horizontal GRAM Start Position write_reg(0x0051, 0x00EF); //Horizontal GRAM end Position write_reg(0x0052, 0x0000); //Vertical GRAM Start Position write_reg(0x0053, 0x013F); //Vertical GRAM end Position switch (DISPLAY_CODE) { case 0x9320: write_reg(0x0060, 0x2700); //starts scanning from G1, and 320 drive lines break; case 0x9325: write_reg(0x0060, 0xA700); //starts scanning from G1, and 320 drive lines break; } write_reg(0x0061, 0x0001); //fixed base display write_reg(0x006a, 0x0000); //no scroll write_reg(0x0090, 0x0010); //set Clocks/Line =16, Internal Operation Clock Frequency=fosc/1, write_reg(0x0092, 0x0000); //set gate output non-overlap period=0 write_reg(0x0093, 0x0003); //set Source Output Position=3 write_reg(0x0095, 0x0110); //RGB interface(Clocks per line period=16 clocks) write_reg(0x0097, 0x0110); //set Gate Non-overlap Period 0 locksc write_reg(0x0098, 0x0110); // write_reg(0x0007, 0x0173); //display On release_bus(); // Turn on the backlight set_backlight(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(GDISPDriver *g) { acquire_bus(); set_viewport(g); } LLDSPEC void gdisp_lld_write_color(GDISPDriver *g) { write_data(g->p.color); } LLDSPEC void gdisp_lld_write_stop(GDISPDriver *g) { release_bus(); } LLDSPEC void gdisp_lld_write_pos(GDISPDriver *g) { set_cursor(g); } #endif #endif #if GDISP_HARDWARE_STREAM_READ LLDSPEC void gdisp_lld_read_start(GDISPDriver *g) { acquire_bus(); set_viewport(g); set_cursor(g); setreadmode(); dummy_read(); } LLDSPEC color_t gdisp_lld_read_color(GDISPDriver *g) { return read_data(); } LLDSPEC void gdisp_lld_read_stop(GDISPDriver *g) { setwritemode(); release_bus(); } #endif #if GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL LLDSPEC void gdisp_lld_control(GDISPDriver *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(); write_reg(0x0007, 0x0000); write_reg(0x0010, 0x0000); write_reg(0x0011, 0x0000); write_reg(0x0012, 0x0000); write_reg(0x0013, 0x0000); release_bus(); set_backlight(0); break; case powerOn: //*************Power On sequence ******************// acquire_bus(); write_reg(0x0010, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */ write_reg(0x0011, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */ write_reg(0x0012, 0x0000); /* VREG1OUT voltage */ write_reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */ gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */ write_reg(0x0010, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */ write_reg(0x0011, 0x0147); /* DC1[2:0], DC0[2:0], VC[2:0] */ gfxSleepMicroseconds(500); write_reg(0x0012, 0x013C); /* VREG1OUT voltage */ gfxSleepMicroseconds(500); write_reg(0x0013, 0x0E00); /* VDV[4:0] for VCOM amplitude */ write_reg(0x0029, 0x0009); /* VCM[4:0] for VCOMH */ gfxSleepMicroseconds(500); write_reg(0x0007, 0x0173); /* 262K color and display ON */ release_bus(); set_backlight(g->g.Backlight); if(g->g.Powermode != powerSleep || g->g.Powermode != powerDeepSleep) gdisp_lld_init(); break; case powerSleep: acquire_bus(); write_reg(0x0007, 0x0000); /* display OFF */ write_reg(0x0010, 0x0000); /* SAP, BT[3:0], APE, AP, DSTB, SLP */ write_reg(0x0011, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */ write_reg(0x0012, 0x0000); /* VREG1OUT voltage */ write_reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */ gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */ write_reg(0x0010, 0x0002); /* SAP, BT[3:0], APE, AP, DSTB, SLP */ release_bus(); set_backlight(0); break; case powerDeepSleep: acquire_bus(); write_reg(0x0007, 0x0000); /* display OFF */ write_reg(0x0010, 0x0000); /* SAP, BT[3:0], APE, AP, DSTB, SLP */ write_reg(0x0011, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */ write_reg(0x0012, 0x0000); /* VREG1OUT voltage */ write_reg(0x0013, 0x0000); /* VDV[4:0] for VCOM amplitude */ gfxSleepMicroseconds(2000); /* Dis-charge capacitor power voltage */ write_reg(0x0010, 0x0004); /* SAP, BT[3:0], APE, AP, DSTB, SLP */ release_bus(); set_backlight(0); 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(); write_reg(0x0001, 0x0100); write_reg(0x0003, 0x1038); write_reg(0x0060, 0x2700); release_bus(); g->g.Height = GDISP_SCREEN_HEIGHT; g->g.Width = GDISP_SCREEN_WIDTH; break; case GDISP_ROTATE_90: acquire_bus(); write_reg(0x0001, 0x0100); write_reg(0x0003, 0x1030); write_reg(0x0060, 0x2700); release_bus(); g->g.Height = GDISP_SCREEN_WIDTH; g->g.Width = GDISP_SCREEN_HEIGHT; break; case GDISP_ROTATE_180: acquire_bus(); write_reg(0x0001, 0x0000); write_reg(0x0003, 0x1030); write_reg(0x0060, 0x2700); release_bus(); g->g.Height = GDISP_SCREEN_HEIGHT; g->g.Width = GDISP_SCREEN_WIDTH; break; case GDISP_ROTATE_270: acquire_bus(); write_reg(0x0001, 0x0000); write_reg(0x0003, 0x1038); write_reg(0x0060, 0xA700); release_bus(); g->g.Height = GDISP_SCREEN_WIDTH; g->g.Width = GDISP_SCREEN_HEIGHT; break; default: return; } g->g.Orientation = (orientation_t)value; return; case GDISP_CONTROL_BACKLIGHT: if ((unsigned)g->p.ptr > 100) g->p.ptr = (void *)100; set_backlight((unsigned)g->p.ptr); g->g.Backlight = (unsigned)g->p.ptr; return; default: return; } } #endif #endif /* GFX_USE_GDISP */