400 lines
13 KiB
C
400 lines
13 KiB
C
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/*
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* Created by Oleg Gerasimov <ogerasimov@gmail.com>
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* 14.08.2016
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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) || defined(GDISP_SCREEN_HEIGHT)
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#if GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_DIRECT
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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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#elif GFX_COMPILER_WARNING_TYPE == GFX_COMPILER_WARNING_MACRO
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COMPILER_WARNING("GDISP: This low level driver does not support setting a screen size. It is being ignored.")
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#endif
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#undef GDISP_SCREEN_WIDTH
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#undef GDISP_SCREEN_HEIGHT
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#endif
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#define GDISP_DRIVER_VMT GDISPVMT_ST7735
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#include "gdisp_lld_config.h"
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#include "src/gdisp/gdisp_driver.h"
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#define BOARD_TYPE_B 1
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#define BOARD_TYPE_R 2
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#define BOARD_TYPE_R144 3
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#include "board_ST7735.h"
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#if !defined(ST7735_TYPE)
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// Backward compatibility:
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#if defined(ST7735_TYPE_R)
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#define ST7735_TYPE BOARD_TYPE_R
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#elif defined(ST7735_TYPE_B)
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#define ST7735_TYPE BOARD_TYPE_B
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#endif
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#endif
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#if !defined(ST7735_TYPE)
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// It seems all modern boards is 7735R
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#define ST7735_TYPE BOARD_TYPE_R
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#endif
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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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#if ST7735_TYPE == BOARD_TYPE_R144
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#define GDISP_SCREEN_HEIGHT 128
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#else
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#define GDISP_SCREEN_HEIGHT 160
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#endif
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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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// Define one of supported color packing, if not defined yet
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#if !defined(ST7735_COLOR_RGB) && !defined(ST7735_COLOR_BRG)
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// It seems most modern boards are RGB
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#if ST7735_TYPE == BOARD_TYPE_R144
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#define ST7735_COLOR_RGB GFXOFF
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#else
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#define ST7735_COLOR_RGB GFXON
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#endif
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#endif
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#if ST7735_COLOR_RGB
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#define ST7735_MADCTRL_COLOR 0x00
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#else
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#define ST7735_MADCTRL_COLOR 0x08
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#endif
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#if ST7735_TYPE == BOARD_TYPE_R144
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#define ST7735_COL_SHIFT 2
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#define ST7735_ROW_SHIFT 3
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#elif defined(ST7735_SHIFTED_COORDS) && ST7735_SHIFTED_COORDS
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#define ST7735_COL_SHIFT 2
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#define ST7735_ROW_SHIFT 1
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#else
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#define ST7735_COL_SHIFT 0
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#define ST7735_ROW_SHIFT 0
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#endif
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#include "drivers/gdisp/ST7735/st7735.h"
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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_reg(g, reg, data) { write_cmd(g, reg); write_data(g, data); }
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// Serial write data for fast fill.
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#ifndef write_data_repeat
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#define write_data_repeat(g, data, count) { int i; for (i = 0; i < count; ++i) write_data (g, data); }
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#endif
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// Commands list copied from https://github.com/adafruit/Adafruit-ST7735-Library
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#define DELAY 0x80
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#if ST7735_TYPE == BOARD_TYPE_B
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static const unsigned char
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init_cmds[] = { // Initialization commands for 7735B screens
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16, // 16 commands in list:
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ST7735_SWRESET, DELAY, // 1: Software reset, no args, w/delay
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50, // 50 ms delay
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ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, no args, w/delay
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255, // 255 = 500 ms delay
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ST7735_COLMOD , 1+DELAY, // 3: Set color mode, 1 arg + delay:
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0x05, // 16-bit color
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10, // 10 ms delay
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ST7735_FRMCTR1, 3+DELAY, // 4: Frame rate control, 3 args + delay:
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0x00, // fastest refresh
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0x06, // 6 lines front porch
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0x03, // 3 lines back porch
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10, // 10 ms delay
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ST7735_MADCTL , 1 , // 5: Memory access ctrl (directions), 1 arg:
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ST7735_MADCTRL_COLOR, // Row addr/col addr, bottom to top refresh
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ST7735_DISSET5, 2 , // 6: Display settings #5, 2 args, no delay:
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0x15, // 1 clk cycle nonoverlap, 2 cycle gate
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// rise, 3 cycle osc equalize
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0x02, // Fix on VTL
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ST7735_INVCTR , 1 , // 7: Display inversion control, 1 arg:
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0x0, // Line inversion
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ST7735_PWCTR1 , 2+DELAY, // 8: Power control, 2 args + delay:
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0x02, // GVDD = 4.7V
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0x70, // 1.0uA
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10, // 10 ms delay
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ST7735_PWCTR2 , 1 , // 9: Power control, 1 arg, no delay:
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0x05, // VGH = 14.7V, VGL = -7.35V
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ST7735_PWCTR3 , 2 , // 10: Power control, 2 args, no delay:
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0x01, // Opamp current small
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0x02, // Boost frequency
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ST7735_VMCTR1 , 2+DELAY, // 11: Power control, 2 args + delay:
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0x3C, // VCOMH = 4V
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0x38, // VCOML = -1.1V
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10, // 10 ms delay
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ST7735_PWCTR6 , 2 , // 12: Power control, 2 args, no delay:
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0x11, 0x15,
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ST7735_GMCTRP1,16 , // 13: Magical unicorn dust, 16 args, no delay:
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0x09, 0x16, 0x09, 0x20, // (seriously though, not sure what
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0x21, 0x1B, 0x13, 0x19, // these config values represent)
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0x17, 0x15, 0x1E, 0x2B,
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0x04, 0x05, 0x02, 0x0E,
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ST7735_GMCTRN1,16+DELAY, // 14: Sparkles and rainbows, 16 args + delay:
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0x0B, 0x14, 0x08, 0x1E, // (ditto)
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0x22, 0x1D, 0x18, 0x1E,
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0x1B, 0x1A, 0x24, 0x2B,
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0x06, 0x06, 0x02, 0x0F,
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10, // 10 ms delay
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ST7735_NORON , DELAY, // 17: Normal display on, no args, w/delay
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10, // 10 ms delay
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ST7735_DISPON , DELAY, // 18: Main screen turn on, no args, w/delay
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255 }; // 255 = 500 ms delay
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#elif (ST7735_TYPE == BOARD_TYPE_R) || (ST7735_TYPE == BOARD_TYPE_R144)
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static const unsigned char
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init_cmds[] = { // Init for 7735R, part 1 (red or green tab)
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19, // 19 commands in list:
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ST7735_SWRESET, DELAY, // 1: Software reset, 0 args, w/delay
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150, // 150 ms delay
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ST7735_SLPOUT , DELAY, // 2: Out of sleep mode, 0 args, w/delay
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255, // 500 ms delay
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ST7735_FRMCTR1, 3 , // 3: Frame rate ctrl - normal mode, 3 args:
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0x00, 0x0, 0x0, // Rate = fosc/(0+40) * (LINE+0+0)
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ST7735_FRMCTR2, 3 , // 4: Frame rate control - idle mode, 3 args:
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0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
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ST7735_FRMCTR3, 6 , // 5: Frame rate ctrl - partial mode, 6 args:
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0x01, 0x2C, 0x2D, // Dot inversion mode
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0x01, 0x2C, 0x2D, // Line inversion mode
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ST7735_INVCTR , 1 , // 6: Display inversion ctrl, 1 arg, no delay:
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0x07, // No inversion
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ST7735_PWCTR1 , 3 , // 7: Power control, 3 args, no delay:
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0xA2,
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0x02, // -4.6V
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0x44, // mode 3
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ST7735_PWCTR2 , 1 , // 8: Power control, 1 arg, no delay:
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0xC5, // VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
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ST7735_PWCTR3 , 2 , // 9: Power control, 2 args, no delay:
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0x0A, // Opamp current small
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0x00, // Boost frequency
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ST7735_PWCTR4 , 2 , // 10: Power control, 2 args, no delay:
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0x8A, // BCLK/2, Opamp current small & Medium low
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0x2A,
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ST7735_PWCTR5 , 2 , // 11: Power control, 2 args, no delay:
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0x8A, 0xEE,
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ST7735_VMCTR1 , 1 , // 12: Power control, 1 arg, no delay:
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0x0E,
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ST7735_INVOFF , 0 , // 13: Don't invert display, no args, no delay
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ST7735_MADCTL , 1 , // 14: Memory access control (directions), 1 arg:
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0xC0|ST7735_MADCTRL_COLOR, // row addr/col addr, bottom to top refresh
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ST7735_COLMOD , 1 , // 15: set color mode, 1 arg, no delay:
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0x05, // 16-bit color
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ST7735_GMCTRP1, 16 , // 1: Gamma + Correction, 16 args, no delay:
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0x02, 0x1c, 0x07, 0x12,
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0x37, 0x32, 0x29, 0x2d,
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0x29, 0x25, 0x2B, 0x39,
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0x00, 0x01, 0x03, 0x10,
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ST7735_GMCTRN1, 16 , // 2: Gamma - Correction, 16 args, no delay:
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0x03, 0x1d, 0x07, 0x06,
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0x2E, 0x2C, 0x29, 0x2D,
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0x2E, 0x2E, 0x37, 0x3F,
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0x00, 0x00, 0x02, 0x10,
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ST7735_NORON , DELAY, // 3: Normal display on, no args, w/delay
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10, // 10 ms delay
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ST7735_DISPON , DELAY, // 4: Main screen turn on, no args w/delay
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100
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}; // 100 ms delay
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#endif
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static void execute_cmds(GDisplay *g, const gU8 *addr) {
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unsigned int cmds = *addr++;
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while (cmds--) {
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write_cmd (g, *addr++);
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unsigned int args = *addr++;
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unsigned int ms = args & DELAY;
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args &= ~DELAY;
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while(args--)
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write_data_byte (g,*addr++);
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if (ms) {
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ms = *addr++;
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gfxSleepMilliseconds(ms==255?500:ms);
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}
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}
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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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execute_cmds(g, init_cmds);
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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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/* 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 = 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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static void set_viewport(GDisplay *g) {
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write_cmd (g, ST7735_CASET);
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write_data (g, g->p.x+ST7735_COL_SHIFT);
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write_data (g, g->p.x+g->p.cx-1+ST7735_COL_SHIFT);
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write_cmd (g, ST7735_RASET);
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write_data (g, g->p.y+ST7735_ROW_SHIFT);
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write_data (g, g->p.y+g->p.cy-1+ST7735_ROW_SHIFT);
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write_cmd (g, ST7735_RAMWR);
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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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LLDCOLOR_TYPE c;
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c = gdispColor2Native(g->p.color);
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write_data(g, c );
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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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LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g) {
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set_viewport(g);
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gdisp_lld_write_color (g);
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}
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#if GDISP_HARDWARE_FILLS
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LLDSPEC void gdisp_lld_fill_area(GDisplay *g) {
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LLDCOLOR_TYPE c = gdispColor2Native(g->p.color);
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acquire_bus(g);
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set_viewport (g);
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write_data_repeat (g,c,g->p.cx*g->p.cy);
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release_bus(g);
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}
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#endif // GDISP_HARDWARE_FILLS
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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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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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// not implemented
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release_bus(g);
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set_backlight(g, 0);
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break;
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case gPowerSleep:
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case gPowerDeepSleep:
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// not implemented
|
||
|
|
acquire_bus(g);
|
||
|
|
release_bus(g);
|
||
|
|
set_backlight(g, 0);
|
||
|
|
break;
|
||
|
|
case gPowerOn:
|
||
|
|
acquire_bus(g);
|
||
|
|
// not implemented
|
||
|
|
release_bus(g);
|
||
|
|
set_backlight(g, g->g.Backlight);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
g->g.Powermode = (gPowermode)g->p.ptr;
|
||
|
|
return;
|
||
|
|
|
||
|
|
case GDISP_CONTROL_ORIENTATION:
|
||
|
|
if (g->g.Orientation == (gOrientation)g->p.ptr)
|
||
|
|
return;
|
||
|
|
switch((gOrientation)g->p.ptr) {
|
||
|
|
case gOrientation0:
|
||
|
|
acquire_bus(g);
|
||
|
|
write_cmd(g, ST7735_MADCTL);
|
||
|
|
write_data_byte(g, 0xC0|ST7735_MADCTRL_COLOR);
|
||
|
|
g->g.Height = GDISP_SCREEN_HEIGHT;
|
||
|
|
g->g.Width = GDISP_SCREEN_WIDTH;
|
||
|
|
release_bus(g);
|
||
|
|
break;
|
||
|
|
case gOrientation90:
|
||
|
|
acquire_bus(g);
|
||
|
|
write_cmd(g, ST7735_MADCTL);
|
||
|
|
write_data_byte(g, 0xA0|ST7735_MADCTRL_COLOR);
|
||
|
|
g->g.Height = GDISP_SCREEN_WIDTH;
|
||
|
|
g->g.Width = GDISP_SCREEN_HEIGHT;
|
||
|
|
release_bus(g);
|
||
|
|
break;
|
||
|
|
case gOrientation180:
|
||
|
|
acquire_bus(g);
|
||
|
|
write_cmd(g, ST7735_MADCTL);
|
||
|
|
write_data_byte(g, 0x00|ST7735_MADCTRL_COLOR);
|
||
|
|
g->g.Height = GDISP_SCREEN_HEIGHT;
|
||
|
|
g->g.Width = GDISP_SCREEN_WIDTH;
|
||
|
|
release_bus(g);
|
||
|
|
break;
|
||
|
|
case gOrientation270:
|
||
|
|
acquire_bus(g);
|
||
|
|
write_cmd(g, ST7735_MADCTL);
|
||
|
|
write_data_byte(g, 0x60|ST7735_MADCTRL_COLOR);
|
||
|
|
g->g.Height = GDISP_SCREEN_WIDTH;
|
||
|
|
g->g.Width = GDISP_SCREEN_HEIGHT;
|
||
|
|
release_bus(g);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
g->g.Orientation = (gOrientation)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;
|
||
|
|
default:
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* GFX_USE_GDISP */
|